Relevant bibliographies by topics / Engine cooling system

Academic literature on the topic 'Engine cooling system'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 February 2022

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Journal articles on the topic "Engine cooling system"

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Daminov, O., O. Khushnaev, A. Yangibaev, and G. Kucharenok. "IMPROVING THE PERFORMANCE INDICATORS OF DIESEL ENGINES BY ENHANCING THE COOLING SYSTEM." Technical science and innovation 2020, no. 1 (March 31, 2020): 63–68. http://dx.doi.org/10.51346/tstu-01.20.1-77-0052.

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The article deals with the improvement of the performance of diesel engines by improving the cooling system. It is indicated that there is a number of problems that arise when converting an engine with spark ignition to natural gas. The increase of thermal stress of the engine is illustrated. As a result of researching of features of the parameters and characteristics of a gas-powered automobile engine and optimization of its temperature regime, a very actual scientific and practical task is determined. The engine with the spark ignition installed on the microbus working on the diesel and gas is presented. The results of the spark-ignition engine research on gaseous fuel are presented. The following recommendations are given: to analyze the design features of gas engines; analyze the principles of operation of modern engine cooling systems; to conduct a theoretical study of the engine cooling system of gas buses and minibuses, which would allow to identify the causes leading to an increase in the thermal stress of engine parts when converted to gas fuel, which consists in the specificity and features of the working process; suggest ways to improve the cooling system of gas engines; to develop and propose options for improving the cooling system of gas engines, which will reduce the cooling temperature from 120 to 90 °C.
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Haryadi, Setyo, Dena Hendriana, Henry Nasution, and Gembong Baskoro. "Monitoring of Thermostat Performance In Heavy Equipment Diesel Engine Cooling System Using An Ultrasonic Flow Meter." Proceedings of The Conference on Management and Engineering in Industry 2, no. 1 (November 23, 2020): 26–30. http://dx.doi.org/10.33555/cmei.v2i1.39.

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Heavy equipment uses diesel engines as the main power source. Common problem in diesel engines is engine overheat condition and the cause of this problem can come from thermostat failure. Diagnosis of the thermostat when problem occurs in the diesel engine cooling system requires a long time. This study aims to determine the condition of the coolant flow and monitor thermostat performance while engine is running so thermostat failure can be detected earlier. In this study, an ultrasonic flow meter to measure coolant flow rate in the diesel engine cooling system was developed and the measurement is displayed for monitoring the condition of thermostat. The monitoring system has been installed and the results showed significant relationship between the coolant flow rate and the performance of the thermostat. This monitoring system can show that when the thermostat is in normal condition and when the coolant temperature reaches 80oC, it is detected that the coolant flow rate from the engine block to the radiator increases significantly.
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Zhang, Junhong, Zhexuan Xu, Jiewei Lin, Zefeng Lin, Jingchao Wang, and Tianshu Xu. "Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental Verification." Energies 11, no. 8 (August 15, 2018): 2127. http://dx.doi.org/10.3390/en11082127.

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The engine cooling system must be able to match up with the stable operating conditions so as to guarantee the engine performance. On the working cycle level, however, the dynamic thermo-state of engines has not been considered in the cooling strategy. Besides, the frequent over-cooling boiling inside the gallery changes the cooling capacity constantly. It is necessary to study the coupling effect caused by the interaction of cooling flow and in-cylinder combustion so as to provide details of the dynamic control of cooling systems. To this end, this study develops a coupled modeling scheme of the cooling process considering the interaction of combustion and coolant flow. The global reaction mechanism is used for the combustion process and the multiphase flow method is employed to simulate the coolant flow considering the wall boiling and the interphase forces. The two sub-models exchange information of in-cylinder temperature, heat transfer coefficient, and wall temperature to achieve the coupled computation. The proposed modeling process is verified through the measured diesel engine power, in-cylinder pressure, and fire surface temperature of cylinder head. Then the effects of different cooling conditions on the cyclic engine performances are analyzed and discussed.
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Goyal, Nupur, Ajay Kaushik, and Mangey Ram. "Automotive Water Cooling System Analysis Subject to Time Dependence and Failure Issues." International Journal of Manufacturing, Materials, and Mechanical Engineering 6, no. 2 (April 2016): 1–22. http://dx.doi.org/10.4018/ijmmme.2016040101.

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In an automobile engine, the heat transfer cannot be possible without cooling system support. The cooling system has a great importance in the engines. It coolants overheat of the engine, and prevents it from breakdown, that's why a highly reliable cooling system is the necessity of every engine but there are many failure issues with a cooling system which are time dependent. This paper investigates the performance of a water cooling system with the consideration of their significant components by taking the attention of three types of time dependent failure issues while the water cooling system is maintained by the sufficient repair facility. It is obvious that in the lack of maintenance, failure issues in water cooling system lead with the increment of time. Maintenance and operating costs of water cooling system affect the economy of overall engine very much, so, it is necessary to be aware about overheating of engines during peak ambient conditions when it is operated with full capacity. Hence, a Mathematical model of water cooling system is proposed by using the Markov process and supplementary variable technique.
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Radchenko, Andrii, Mykola Radchenko, Andrii Konovalov, and Anatolii Zubarev. "Increasing electrical power output and fuel efficiency of gas engines in integrated energy system by absorption chiller scavenge air cooling on the base of monitoring data treatment." E3S Web of Conferences 70 (2018): 03011. http://dx.doi.org/10.1051/e3sconf/20187003011.

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An advanced scavenge air cooling system for reciprocating gas engines of integrated energy system for combined electricity, heat and refrigeration generation has been developed. New method of deep scavenge air cooling and stabilizing its temperature at increased ambient air temperatures and three-circuit scavenge air cooling system with absorption lithium-bromide chiller and wet-type cooling tower was proposed. Such cooling method does not require essential constructive changes in the existing scavenge air cooling system but only an addition heat exchanger for chilling scavenge air cooling water of scavenge air low-temperature intercooler closed contour by absorption chiller. A chilled water from absorption chiller is used as a coolant. To evaluate the effect of gas engine scavenge air deeper cooling compared with its typical radiator cooling, data on the dependence of fuel consumption and power output of gas engine on ambient air temperature at the inlet of the radiator are analized. The efficiency of engine scavenge air deep cooling at increased ambient air temperatures was estimated by reducing the gas fuel consumption compared with radiator cooling.
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Radchenko, Andrii, Ionut-Cristian Scurtu, Mykola Radchenko, Serhiy Forduy, and Anatoliy Zubarev. "Monitoring the efficiency of cooling air at the inlet of gas engine in integrated energy system." Thermal Science, no. 00 (2020): 344. http://dx.doi.org/10.2298/tsci200711344r.

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The fuel efficiency of gas engines is effected by the temperature of intake air at the suction of turbocharger. The data on dependence of fuel consumption and engine electric power on the intake air temperature were monitored for Jenbacher gas engine JMS 420 GS-N.LC to evaluate its influence. A waste heat of engine is rejected for heating water to the temperature of about 90??. The heat received is used in absorption lithium-bromide chiller to produce a cold in the form of chilled water. A cooling capacity of absorption chiller firstly is spent for technological needs and then for feeding the central air conditioner for cooling the ambient air incoming the engine room, from where the air is sucked by the engine turbocharger. The monitoring data revealed the reserves to enhance the efficiency of traditional cooling system of intake air by absorption chiller through deeper cooling. This concept can be realized in two ways: by addition cooling a chilled water from absorption chiller to about 5-7?? for feeding engine intake air cooler or by two-stage cooling with precooling ambient air by chilled water from ACh in the first stage and subsequent deep cooling air to the temperatures 7-10?? in the second stage of intake air cooler by using a refrigerant as a coolant. In both cases the ejector chiller could be applied as the most simple in design.
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Altaf, Khurram, Masri Baharom, A. Rashid A. Aziz, Junaid A. Qayyum, and Mirza Jahanzaib. "Rapid Prototyping of a Customized Cooling System for a Novel Crank Rocker Engine." International Journal of Engineering & Technology 7, no. 3.17 (August 1, 2018): 90. http://dx.doi.org/10.14419/ijet.v7i3.17.16628.

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A novel internal combustion engine termed as Crank Rocker Engine has been developed at Universiti Teknologi PETRONAS (UTP) Malaysia. In the existing design, the engine cylinder is cooled through forced convection which is not efficient and malfunctioning of cooling system could lead to engine overheating. The objective of the current study is to develop a concept of an integrated and customized cooling system for the Crank-Rocker engine and to develop through rapid prototyping (RP). The proposed cooling system comprises of an integrated cooling water jacket around the engine cylinder, which works on the principle of forced convection. The forced convection is energy intensive and not suitable for stationary engines. Therefore, an enhanced design of the cooling system is required to improve the overall performance of the engine. Since the engine cylinder is curved, the conventional manufacturing technologies could be difficult to apply for the development of cooling system. For swift, precise and economic development as well as performance analysis of the cooling system, RP technique could be promising. In the present study, a customized and modified cooling system has been designed and developed through fused deposition modelling (FDM), an efficient RP technology. Design for additive manufacturing (DFAM) is applied to mitigate development time and support structures of the cooling system. The design is proposed by keeping in view the cooling performance and manufacturability.
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Lunyaka, K., O. Kliuiev, S. Rusanov, and O. Kliuieva. "THE RESEARCH OF THE WORK OF THE HEAT ACCUMULATOR OF THE PRE-STARTING SYSTEM OF WORMING UP OF THE INTERNAL COMBUSTION ENGINE." Thermophysics and Thermal Power Engineering 42, no. 3 (June 1, 2020): 76–83. http://dx.doi.org/10.31472/ttpe.3.2020.9.

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Problem statement. Starting internal combustion engines for a large car fleet at ambient temperature of less than 5 ºС requires considerable time; it leads to increased wear of the components of the connected engine pairs, increased fuel consumption during start-up and warm-up and increased emissions of harmful substances into the atmosphere with exhaust fumes. Therefore, prestart warming up of car engines is given great attention. Actual scientific researches and issues analysis Recently, this problem has been solved by using heat accumulators, moreover, heat accumulators with heat storage material of a phase transition are given preference. The engine exhaust gases (temperature 600-700 ºС) or the engine cooling liquid (water, tosol cooling agent) are used as a heat transfer agent. Given the negative impact of high temperatures on the heat storage material, the metal of the heat storage structure and overheating (boiling) of the engine coolant, the first way has certain disadvantages. In this regard, we consider it more promising to use a liquid cooling engine as a coolant for a heat accumulator. High temperatures have no positive affect on the heat storage material, the metal of the heat storage structure and these are a cause for boiling a coolant –cooler of the engine. In this regard, we consider more promising to use a cooling fluid of the heat accumulator as a heat transfer agent. The aim of this work is to develop a new design of a heat accumulator for pre-starting warming up of a car engine, to make the experimental installation to research its work and conducting researches in order to find the time of charging and discharging of the heat accumulator, to construct operating modes during charging and discharging, to determine the necessary mass of the heat-accumulating material and the battery size. Base material The experimental installation was a closed system: the heat accumulator — a passage of the VAZ 2109 car engine cooling system. Taking into account the work peculiarities of the heat accumulator in the cooling system of the car engine, unlike other areas where all mass of the heat storage material constantly is in contact with the substance which the heat storage material giving up heat, in our case, the engine cooling liquid is located in the heat accumulator and in the cooling jacket. They mixes before starting the engine, while its temperature decreases. The time of charging and staying of the heat accumulator in the charged state has been determined, the operating modes during charging and discharging have been constructed, the necessary mass of the heat-accumulating material and the battery size has been determined. Conclusions The experimental model of the heat accumulator of the pre-starting system of worming up of the engine of the car has been developed. This experimental model is included in a closed circuit with engine cooling system. On the model the researches of charging and discharging process of the heat accumulator have been conducted. The required time for these processes has been determined and on this basis the modes of operation of the heat accumulator - engine cooling system have been constructed. The temperatures of tosol cooling agent in the cooling system were calculated and it allowed finding mass (volume) of heat storage material of the heat accumulator and it served as the basis for determining the size of the heat accumulator. Establishment of a computerized control system on/off control of the heat accumulator in order to maintain the desired temperature of the engine coolant liquid using of heat storage material of phase transition and controlling this system using supplements to phones.
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Pokusaev, Mikhail Nikolaevich, Alexei Viktorovich Trifonov, and Vasiliy Aleksandrovich Kostyrenko. "TESTING PLANT FOR ENGINE WITH ENERGY EFFICIENT COOLING SYSTEM." Vestnik of Astrakhan State Technical University 2021, no. 1 (May 31, 2021): 15–21. http://dx.doi.org/10.24143/1812-9498-2021-1-15-21.

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The article focuses on developing a new testing system for the Iveco 8041I06 55 R900 engine in the laboratory “Marine Diesels” under Astrakhan state technical university in the event of modernizing the test benches with ship engines. There has been considered creating an ex-perimental unit for conducting heat-balance tests of a marine engine using modern measurement and control tools. The unit consists of a converted engine powered by a generator. The engine will be tested according to the generator characteristic. There is given the data on the main technical parameters of the tested engine and on the potential configuration of the instrument base. As a load for the generator, it is planned to use a resistive load device. A fuel micro-meter will be used to measure the fuel consumption. Flow meters are selected for measuring the flow rates. Heat carriers and temperature sensors are selected for measuring temperature of the exhaust gases. The parameters of the engine under consideration are compared with the requirements of the Russian River Register for marine engines. The scope of work on converting an industrial engine into a marine engine in terms of the modernization of the cooling system has been described. The unit is designed to study the ship's cooling system operation, in which the control is carried out by changing the speed of the suspended pump depending on the temperature of the seawater. There was selected a pump and a device to regulating its rotating speed. The positive effect is achieved by reducing the power consumed by the pump. It saves the fuel and reduces the environmental damage due to the lower carbon dioxide emissions
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Cortona, E., C. H. Onder, and L. Guzzella. "Engine thermomanagement with electrical components for fuel consumption reduction." International Journal of Engine Research 3, no. 3 (June 1, 2002): 157–70. http://dx.doi.org/10.1243/14680870260189271.

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This paper proposes a solution for advanced temperature control of the relevant temperature of a combustion engine. It analyses the possibility of reducing vehicle fuel consumption by improving engine thermomanagement. In conventional applications, combustion engine cooling systems are designed to guarantee sufficient heat removal at full load. The cooling pump is belt-driven by the combustion engine crankshaft, resulting in a direct coupling of engine and cooling pump speeds. It is dimensioned such that it can guarantee adequate performance over the full engine speed range. This causes an excessive flow of cooling fluid at part-load conditions and at engine cold-start. This negatively affects the engine efficiency and, as a consequence, the overall fuel consumption. Moreover, state-of-the-art cooling systems allow the control of the coolant temperature only by expansion thermostats (solid-to-liquid phase wax actuators). The resulting coolant temperature does not permit engine efficiency to be optimized. In this paper, active control of the coolant flow as well as of the coolant temperature has been realized using an electrical cooling pump and an electrically driven valve which controls the flow distribution between the radiator and its bypass. For this purpose, a control-oriented model of the whole cooling system has been derived. Model-based feedforward and feedback controls of coolant temperature and flow have been designed and tested. With the additional actuators and the model-based control scheme, a good performance in terms of fast heat-up and small temperature overshoot has been achieved. The improvements in fuel consumption obtained with the proposed configuration have been verified on a dynamic testbench. Both engine cold-start under stationary engine operation and the European driving cycle MVEG-A with engine cold-start were tested. The fuel consumption reductions achieved during these tests vary between 2.8 and 4.5 per cent, depending on the engine operating conditions. Compared to vehicle mass reduction or internal engine improvements, engine thermomanagement is a simple, flexible and cost efficient solution for improving system performance, i.e. fuel consumption.
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Dissertations / Theses on the topic "Engine cooling system"

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Frick, Peyton M. "A hydraulic actuated thermal management system for large displacement engine cooling systems." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1193080466/.

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Kendrick, Clint Edward. "Development of model for large-bore engine cooling systems." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/8721.

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Master of Science
Department of Mechanical and Nuclear Engineering
Kirby S. Chapman
The purpose of this thesis is to present on the development and results of the cooling system logic tree and model developed as part of the Pipeline Research Council International, Inc (PRCI) funded project at the Kansas State National Gas Machinery Laboratory. PRCI noticed that many of the legacy engines utilized in the natural gas transmission industry were plagued by cooling system problems. As such, a need existed to better understand the heat transfer mechanisms from the combusting gases to the cooling water, and then from the cooling water to the environment. To meet this need, a logic tree was developed to provide guidance on how to balance and identify problems within the cooling system and schedule appropriate maintenance. Utilizing information taken from OEM operating guides, a cooling system model was developed to supplement the logic tree in providing further guidance and understanding of cooling system operation. The cooling system model calculates the heat loads experienced within the engine cooling system, the pressures within the system, and the temperatures exiting the cooling equipment. The cooling system engineering model was developed based upon the fluid dynamics, thermodynamics, and heat transfer experienced by the coolant within the system. The inputs of the model are familiar to the operating companies and include the characteristics of the engine and coolant piping system, coolant chemistry, and engine oil system characteristics. Included in the model are the various components that collectively comprise the engine cooling system, including the water cooling pump, aftercooler, surge tank, fin-fan units, and oil cooler. The results of the Excel-based model were then compared to available field data to determine the validity of the model. The cooling system model was then used to conduct a parametric investigation of various operating conditions including part vs. full load and engine speed, turbocharger performance, and changes in ambient conditions. The results of this parametric investigation are summarized as charts and tables that are presented as part of this thesis.
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Sastry, Sudeep. "A Thermoacoustic Engine Refrigerator System for Space Exploration Mission." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1301588899.

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Sivard, Henrik. "Development and Implementation of a Controllable Thermostat for an Engine Cooling System." Thesis, KTH, Reglerteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104016.

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Reducing fuel consumption is one of the main aims when developing new trucks at Scania. For instance, there are a lot of new EU regulations on what emission levels are allowed. Also, having a low fuel consumption gives Scania an edge over their competitors. This master thesis will investigate one possible way of reducing the fuel consumption in a truck. The aim is to allow a higher engine temperature which gives a higher oil temperature causing less friction in the engine. Thus leading to a more ecient engine and reduced fuel consumption. This needs to be done without risking that the engine overheats. The method used to achieve this is a controllable thermostat which regulates the engine temperature with respect to dierent driving scenarios. In this work a control strategy for a controllable thermostat is produced with help of a Simulik environment where it's tested. A controllable thermostat consisting of a three way valve and an actuator is then installed in a truck and tested on roads. The tests in the truck shows that the controllable thermostat can eciently regulate the engine temperature to dierent reference temperatures and results from simulations showed that a fuel reduction is possible.
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Johansson, Adam, and Jonas Gunnarsson. "Predicting Flow Dynamics of an Entire Engine Cooling System Using 3D CFD." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-62763.

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A combustion engine generates a lot of heat which need to be cooled to prevent damages to the engine and the surrounding parts. If the cooling system can not provide enough cooling to keep the engine in a well defined range of temperatures performance and durability will decrease and emissions increase. It is also important that the cooling system do not over-cool the engine, since this may result in rough running, increased engine friction and an overall negative performance. The aim of this thesis work is to create a complete 3D digital model of the cooling system for the first generation VED4 HP with CFD in STAR-CCM+. The simulated results are compared to available experimental data for validation. Today the entire system is being modeled with 1D CFD. One of the selected components in the cooling system being model in 3D at Volvo Cars is the water jacket. The 3D CFD model depends on the 1D CFD model for the boundary conditions which is an ineffective and time consuming process, sending data back and forth between the models when making changes. A 3D CFD model is not only more accurate than the 1D CFD model, since it capture the 3D flow phenomenas but it also allows parts or areas to be studied in detail. A study of four different turbulence models is conducted on the water jacket and on an arbitrary pipe in the cooling system. A mesh study is carried on the water jacket, the same arbitrary pipe and on the thermostat, both for the opened and closed thermostat. These studies are done with regard to pressure drop only. The study yields a low Reynolds model with the k-ε v2f turbulence model gave the best results. There is a discrepancy between the simulated results and the experiments. Main reasons to this may be the difference in the geometry used in this thesis for the digital model and the geometry used for the experiments together with the inaccuracies in the experimental data. The overall deviation is larger for a case with closed thermostat than for a case with an open thermostat. With the correct geometry and more accurate experimental data the simulations should be a close representation of reality.
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Ng, Eton Yat-Tuen, and eton_ng@hotmail com. "Vehicle engine cooling systems: assessment and improvement of wind-tunnel based evaluation methods." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2002. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080422.100014.

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The high complexity of vehicle front-end design, arising from considerations of aerodynamics, safety and styling, causes the airflow velocity profile at the radiator face to be highly distorted, leading to potentially reduced airflow volume for heat dissipation. A flow visualisation study showed that the bumper bar significantly influenced the cooling airflow, leading to three-dimensional vortices in its wake and generating an area of relatively low velocity across at least one third of the radiator core. Since repeatability and accuracy of on-road testing are prejudiced by weather conditions, wind-tunnel testing is often preferred to solve cooling airflow problems. However, there are constraints that limit the accuracy of reproducing on-road cooling performance from wind-tunnel simulations. These constraints included inability to simulate atmospheric conditions, limited tunnel test section sizes (blockage effects) and lack of ground effect simulations. The work presented in this thesis involved use of on-road and wind-tunnel tests to investigate the effects of most common constraints present in wind tunnels on accuracy of the simulations of engine cooling performance and radiator airflow profiles. To aid this investigation, an experimental technique for quantifying radiator airflow velocity distribution and an analytical model for predicting the heat dissipation rate of a radiator were developed. A four-hole dynamic pressure probe (TFI Cobra probe) was also used to document flow fields in proximity to a section of radiator core in a wind tunnel in order to investigate the effect of airflow maldistribution on radiator heat-transfer performance. In order to cope with the inability to simulate ambient temperature, the technique of Specific Dissipation (SD) was used, which had previously been shown to overcome this problem.
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Prado, Wesley Bolognesi. "Simulação do sistema de arrefecimento de motores diesel em Matlab-Simulink." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-11022016-112753/.

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Programa computacional em Matlab-Simulink para simular o comportamento do sistema de arrefecimento de veículos comerciais (vans, ônibus e caminhões) equipados com motores diesel. O programa está embasado em uma modelagem matemática que visa caracterizar o funcionamento dos componentes principais do sistema: motor, radiador, termostato, by-pass e bomba d\'água. Tendo como entrada dados característicos do veículo em estudo, o programa computacional fornece a distribuição de temperatura ao longo do tempo para o líquido de arrefecimento - parâmetro preponderante em uma análise do sistema. Os resultados da simulação permitem aos projetistas prever a atuação do sistema de arrefecimento em diversas condições, o que possibilita a realização de um número menor de testes de pista. Os benefícios de um sistema de arrefecimento projetado adequadamente podem ser notados em relação à economia de combustível, ao aumento de desempenho e à redução do desgaste de determinadas peças do motor e da emissão de poluentes.
A software was developed having Matlab-Simulink as basis and it simulates the behavior of the cooling system in commercial vehicles (vans, bus and trucks) equipped with diesel engines. The program is based on mathematical models to describe the main components of the system: engine, radiator, thermostat, by-pass and water pump. Having as input data the features of the vehicle in studied, the software supplies the cooling fluid temperature distribution during certain time - preponderant parameter in the analysis of the system. The results of the simulation allow the designers to foresee the cooling system performance in several conditions, decreasing the number of track tests. The benefits of an adequate designed cooling system project can be noticed considering fuel economy, performance improvement and decrease of wearing of specific parts in the engine as well as pollutant emissions.
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Ismail, Basel Ismail A. "The heat transfer and the soot deposition characteristics in diesel engine exhaust gas recirculation system cooling devices /." *McMaster only, 2004.

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Kerachian, Amirali. "Implementation, Validation, and Evaluation of 1D-3D CFD Co-simulation for Cooling System of Internal Combustion Engine." Thesis, KTH, Fordonsdynamik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280563.

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Internal combustion engines, electric motors and batteries generate a significant amount of heat during operation that needs to be extracted by cooling systems. A cooling system is designed and installed to extract the generated heat and maintain the system temperature in an optimal range. Overheating has several unfavorable outcomes such as less durability and lower energy efficiency. The cooling system consists of several components such as hoses, flow splitters, valves, heat exchangers, coolant, pump, etc. The coolant, as the working fluid, is pumped to different heat generator component to enable the cooling down process. Computational Fluid Dynamics (CFD) is a powerful and cost efficient tool to simulate the cooling processes, design, and evaluate the performance of a cooling system. Generally, one dimensional CFD is a common approach to interpret and explain the cooling processes in the automotive industry due to its high flexibility and computational cost efficiency. Also, three dimensional CFD is employed whenever it is required to study complex physical phenomena and provide detailed information. Additionally, it is possible to couple one dimensional and three dimensional CFD approaches to simulate cooling processes. Not only is the coupled 1D-3D CFD approach able to capture complicated physical processes but also is flexible and cost efficient. The objective of this master thesis is to implement 1D-3D CFD coupled simulation on internal combustion engines’ cooling system and evaluate the advantages and disadvantages of this method. The performance of this method is examined in different case studies with different flow and geometrical characteristics. The effect of various turbulence models and numerical settings are investigated on the quality of the coupled simulations’ results. The coupled simulations are carried out using GT-SUITE and STAR-CCM+ software. The performed simulations show that the coupling method is a convenient approach which is able to capture detailed physics with high precision requiring reasonable computational costs. The results of the coupled simulations depict agreement with the uncoupled 1D CFD simulations, although some discrepancies are observed in complex case studies. Also, it is shown that the coupled simulations are sensitive to numerical settings and physical models, consequently, the case setup should be optimized carefully.
Förbränningsmotorer, elmotorer och batterier genererar en betydande mängd värme under drift som behöver extraheras av kylsystem. Ett kylsystem är utformat och installerat för att extrahera den genererade värmen och hålla systemtemperaturen i ett optimalt intervall. Överhettning har flera ogynnsamma följder, som mindre hållbarhet och lägre energieffektivitet. Kylsystemet består av flera komponenter, till exempel slangar, flödesdelare, ventiler, värmeväxlare, kylvätska, pump etc. Kylvätskan, som arbetsvätska pumpas till olika värmegenerator-komponenter för att möjliggöra nedkylningsprocessen.Computational Fluid Dynamics (CFD) är ett kraftfullt och kostnadseffektivt verktyg för att simulera kylprocesserna, utforma och utvärdera prestanda för ett kylsystem. I allmänhet är endimensionell CFD en vanlig metod för att tolka och förklara kylningsprocesserna i bilindustrin på grund av dess höga flexibilitet och beräkningseffektivitet. Dessutom används tredimensionell CFD när det krävs, för att studera komplexa fysiska fenomen och tillhandahålla detaljerad information. Dessutom är det möjligt att koppla ihop en- och tredimensionell CFD-metod för att simulera kylningsprocesser. Inte bara är den kopplade 1D-3D CFD-metoden möjlig för att betrakta komplicerade fysiska processer, utan är även flexibel och kostnadseffektiv.Syftet med detta examensarbete är att implementera 1D-3D CFD kopplad simulering på förbränningsmotorns kylsystem och utvärdera fördelarna och nackdelarna med denna metod. Uppträdandet av denna metod undersöks i olika fallstudier med olika flöde och geometriska egenskaper. Effekterna av olika turbulensmodeller och numeriska inställningar undersöks genom kvaliteten på resultaten hos kopplingens simuleringar. De kopplade simuleringarna utförs med hjälp av mjukvaran GT-SUITE och STAR CCM +.De utförda simuleringarna visar att kopplingsmetoden är ett bekvämt tillvägagångssätt som kan fånga detaljerad fysik med hög precision till rimliga beräkningskostnader. Resultaten av de kopplade simuleringarna visar överensstämmelse med de frikopplade 1D CFD-simuleringarna, även om vissa avvikelser observeras i komplexa fallstudier. Det visas också att de kopplade simuleringarna är känsliga för numeriska inställningar och fysiska modeller, därför bör fallinställningen optimeras noggrant.
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Abdul-Jalal, Rifqi I. "Engine thermal management with model predictive control." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/24274.

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The global greenhouse gas CO2 emission from the transportation sector is very significant. To reduce this gas emission, EU has set an average target of not more than 95 CO2/km for new passenger cars by the year 2020. A great reduction is still required to achieve the CO2 emission target in 2020, and many different approaches are being considered. This thesis focuses on the thermal management of the engine as an area that promise significant improvement of fuel efficiency with relatively small changes. The review of the literature shows that thermal management can improve engine efficiency through the friction reduction, improved air-fuel mixing, reduced heat loss, increased engine volumetric efficiency, suppressed knock, reduce radiator fan speed and reduction of other toxic emissions such as CO, HC and NOx. Like heat loss and friction, most emissions can be reduced in high temperature condition, but this may lead to poor volumetric efficiency and make the engine more prone to knock. The temperature trade-off study is conducted in simulation using a GT-SUITE engine model coupled with the FE in-cylinder wall structure and cooling system. The result is a map of the best operating temperature over engine speed and load. To quantify the benefit of this map, eight driving styles from the legislative and research test cycles are being compared using an immediate application of the optimal temperature, and significant improvements are found for urban style driving, while operation at higher load (motorway style driving) shows only small efficiency gains. The fuel consumption saving predicted in the urban style of driving is more than 4%. This assess the chance of following the temperature set point over a cycle, the temperature reference is analysed for all eight types of drive cycles using autocorrelation, lag plot and power spectral density. The analysis consistently shows that the highest volatility is recorded in the Artemis Urban Drive Cycle: the autocorrelation disappears after only 5.4 seconds, while the power spectral density shows a drop off around 0.09Hz. This means fast control action is required to implement the optimal temperature before it changes again. Model Predictive Control (MPC) is an optimal controller with a receding horizon, and it is well known for its ability to handle multivariable control problems for linear systems with input and state limits. The MPC controller can anticipate future events and can take control actions accordingly, especially if disturbances are known in advance. The main difficulty when applying MPC to thermal management is the non-linearity caused by changes in flow rate. Manipulating both the water pump and valve improves the control authority, but it also amplifies the nonlinearity of the system. Common linearization approaches like Jacobian Linearization around one or several operating points are tested, by found to be only moderately successful. Instead, a novel approach is pursued using feedback linearization of the plant model. This uses an algebraic transformation of the plant inputs to turn the nonlinear systems dynamics into a fully or predominantly linear system. The MPC controller can work with the linear model, while the actual control inputs are found using an inverse transformation. The Feedback Linearization MPC of the cooling system model is implemented and testing using MathWork Simulink®. The process includes the model transformation approach, model fitting, the transformation of the constraints and the tuning of the MPC controller. The simulation shows good temperature tracking performance, and this demonstrates that a MPC controller with feedback linearization is a suitable approach to thermal management. The controller strategy is then validated in a test rig replicating an actual engine cooling system. The new MPC controller is again evaluated over the eight driving cycles. The average water pump speed is reduced by 9.1% compared to the conventional cooling system, while maintaining good temperature tracking. The controller performance further improves with future disturbance anticipation by 20.5% for the temperature tracking (calculated by RMSE), 6.8% reduction of the average water pump speed, 47.3% reduction of the average valve movement and 34.0% reduction of the average radiator fan speed.
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Books on the topic "Engine cooling system"

1

Johnson, Richard P. A preliminary design and analysis of an advanced heat-rejection system for an extreme altitude advanced variable cycle diesel engine installed in high-altitude advanced research plaftorm. Edwards, Calif: National Aeronautics and Space Administration, Dryden Flight Research Facility, 1992.

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Birmingham), Autotech 1991 (1991. Engine cooling systems. [London]: Institution of Mechanical Engineers, 1991.

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Kanefsky, Peter. A systems approach to engine cooling design. Warrendale, PA: Society of Automotive Engineers, 1999.

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Eaton, Edward R. Global testing of extended service engine coolants and related fluids. West Conshohocken, PA: ASTM International, 2014.

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Armstrong, Elizabeth S. Test program to provide confidence in liquid oxygen cooling of hydrocarbon fueled rocket thrust chambers. [Washington, DC]: National Aeronautics and Space Administration, 1986.

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Rigby, David L. Prediction of heat and mass transfer in a rotating ribbed coolant passage with a 180 degree turn. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1999.

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Engineers, Society of Automotive, and SAE International Congress & Exposition (1996 : Detroit, Mich.), eds. Engine coolants and cooling system components. Warrendale, PA: Society of Automotive Engineers, 1996.

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Engineers, Society of Automotive. Engine Coolants and Cooling System Components. SAE International, 1996.

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Engineers, Society of Automotive. Engine Coolants, Cooling System Materials, and Components. SAE International, 1993.

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Engineers, Society of Automotive, and SAE International Congress & Exposition (1993 : Detroit, Mich.), eds. Engine coolants, cooling system materials, and components. Warrendale, Pa: Society of Automotive Engineers, 1993.

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Book chapters on the topic "Engine cooling system"

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Li, Xin, Liang Zhu, Yongcheng Zhu, Zhixin Zeng, and Jujiang Liu. "Performance Simulation Study of Vehicle Engine Cooling System." In Lecture Notes in Electrical Engineering, 1–16. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9718-9_1.

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Xu, Meihua, Fangjie Zhao, and Lianzhou Wang. "FPGA-Based Cooling Fan Control System for Automobile Engine." In Lecture Notes in Computer Science, 728–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13498-2_95.

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Wenzel, Wolfgang, John Shutty, Jeri Tsai, and Thomas Buchholz. "Thermal management for a light-dutyvehicle with diesel engine: Evaluation of an optimized cooling system with variable cooling components." In Proceedings, 61–77. Wiesbaden: Springer Fachmedien Wiesbaden, 2014. http://dx.doi.org/10.1007/978-3-658-05130-3_6.

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Olmeda, R., P. Breda, C. Stemmer, and M. Pfitzner. "Large-Eddy Simulations for the Wall Heat Flux Prediction of a Film-Cooled Single-Element Combustion Chamber." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 223–34. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_14.

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Abstract In order for modern launcher engines to work at their optimum, film cooling can be used to preserve the structural integrity of the combustion chamber. The analysis of this cooling system by means of CFD is complex due to the extreme physical conditions and effects like turbulent fluctuations damping and recombination processes in the boundary layer which locally change the transport properties of the fluid. The combustion phenomena are modeled by means of Flamelet tables taking into account the enthalpy loss in the proximity of the chamber walls. In this work, Large-Eddy Simulations of a single-element combustion chamber experimentally investigated at the Technical University of Munich are carried out at cooled and non-cooled conditions. Compared with the experiment, the LES shows improved results with respect to RANS simulations published. The influence of wall roughness on the wall heat flux is also studied, as it plays an important role for the lifespan of a rocket engine combustors.
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Nianzu, Liu, Xu Guanglin, and Liu Yongchang. "Fault Diagnosis Model of Main Engine Water Cooling System Based on Attribute Hybrid Computing Network." In Communications in Computer and Information Science, 330–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23220-6_42.

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Fiedler, Torben, Joachim Rösler, Martin Bäker, Felix Hötte, Christoph von Sethe, Dennis Daub, Matthias Haupt, Oskar J. Haidn, Burkard Esser, and Ali Gülhan. "Mechanical Integrity of Thermal Barrier Coatings: Coating Development and Micromechanics." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 295–307. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_19.

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Abstract To protect the copper liners of liquid-fuel rocket combustion chambers, a thermal barrier coating can be applied. Previously, a new metallic coating system was developed, consisting of a NiCuCrAl bond-coat and a Rene 80 top-coat, applied with high velocity oxyfuel spray (HVOF). The coatings are tested in laser cycling experiments to develop a detailed failure model, and critical loads for coating failure were defined. In this work, a coating system is designed for a generic engine to demonstrate the benefits of TBCs in rocket engines, and the mechanical loads and possible coating failure are analysed. Finally, the coatings are tested in a hypersonic wind tunnel with surface temperatures of 1350 K and above, where no coating failure was observed. Furthermore, cyclic experiments with a subscale combustion chamber were carried out. With a diffusion heat treatment, no large-scale coating delamination was observed, but the coating cracked vertically due to large cooling-induced stresses. These cracks are inevitable in rocket engines due to the very large thermal-strain differences between hot coating and cooled substrate. It is supposed that the cracks can be tolerated in rocket-engine application.
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Bhatti, S. S., S. K. Tyagi, and Abhishek Verma. "Energy and Exergy Analysis of Vapour Absorption Cooling System Driven by Exhaust Heat of IC Engine." In Advances in Air Conditioning and Refrigeration, 269–76. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6360-7_24.

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Purshouse, M. "Underwater Noise Radiation Due to Transmission through the Cooling Water System of a Marine Diesel Engine." In Shipboard Acoustics, 155–75. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-3515-0_10.

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Carroll E. Goering and Alan C. Hansen. "CHAPTER 12 Cooling Systems." In Engine & Tractor Power, 4th Edition, 279–92. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2004. http://dx.doi.org/10.13031/2013.24132.

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Hirst, Jack. "Cooling and Heater Systems." In Engines and Related Systems, 43–59. London: Macmillan Education UK, 1990. http://dx.doi.org/10.1007/978-1-349-12121-2_3.

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Conference papers on the topic "Engine cooling system"

1

Mcassey, Edward V., and Amy S. Fleischer. "Engine Cooling System Stability." In 1995 Vehicle Thermal Management Systems Conference and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-1741.

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Ap, N. S., A. Maire, P. Jouanny, and J. C. Le Prigent. "Economical Engine Cooling System." In 1995 Vehicle Thermal Management Systems Conference and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-1708.

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Barthel, Ralf, and Ju¨rgen Dohmen. "Virtual Cooling System Development." In ASME 2006 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ices2006-1438.

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The cooling system of today’s engines has to fulfill certain requirements which results from fuel consumption reduction, efficiency increase and tightened emission legislation. Additionally the warm-up behavior especially of the passenger cabin and the resulting heater performance requirement leads to controversial targets. Beside these aspects the main function of the cooling system, the limitation of fluid and material temperatures has to be guaranteed. Following the trend that one engine will be integrated in a few different vehicles, with different vehicle-sided cooling system components, the cooling system development gets more and more complex with the result of an increase of the necessary testing effort to develop the system to series status. With focus on this trend, FEV has extended the well proven 1-dimensional thermal management simulation model to a complete closed loop development approach starting from the engine internal coolant flow distribution in the early engine concept phase up to the virtual testing model, which allows to simulate common vehicle test rows on the climate chamber or at hot ambient conditions at rod tests.
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Harashina, Ken'ichi, Katsuhiro Murata, Hiroshi Satoh, Yasuo Shimizu, and Masahiro Hamamura. "A New Cylinder Cooling System Using Oil." In Small Engine Technology Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1995. http://dx.doi.org/10.4271/951796.

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Einaudi, Gianpiero, and Walter Mortara. "Engine Cooling Electronic Control System." In 22nd FISITA Congress. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1988. http://dx.doi.org/10.4271/885085.

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Durgun, İsmail, Arda Odabaşıoğlu, and Hasan Ayartürk. "ENGINE COOLING SYSTEM WITHOUT RADIATOR." In XXIII Simpósio Internacional de Engenharia Automotiva. São Paulo: Editora Edgard Blücher, 2015. http://dx.doi.org/10.5151/engpro-simea2015-pap142.

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Rahman, Sadek, and Richard Sun. "Robust Engineering of Engine Cooling System." In SAE 2003 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-0149.

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C, Soujanya, V. Sundaram, and Sathish Kumar S. "Simulation of Split Engine Cooling System." In Symposium on International Automotive Technology 2015. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2015. http://dx.doi.org/10.4271/2015-26-0196.

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Facchini, B., G. Migliorini, A. Vacca, G. Toderi, L. Arnone, and M. Marcacci. "AIR COOLING SYSTEM FOR SMALL INTERNAL COMBUSTION ENGINE EXPERIMENTAL ANALYSIS." In Small Engine Technology Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-1791.

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Kumar, Vishal, Omprakash Singh, Manish Garg, and Yatin V. Chaudhary. "Optimization of Air-Cooling System of 4-Stroke Scooter Engine." In Small Engine Technology Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2008. http://dx.doi.org/10.4271/2008-32-0071.

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Reports on the topic "Engine cooling system"

1

Davis, Dwayne. Engine Cooling System Survey of Military Antifreeze MIL-A-46153 Field Performance. Fort Belvoir, VA: Defense Technical Information Center, July 1991. http://dx.doi.org/10.21236/ada240125.

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Armstrong, P. R., and J. R. Schmelzer. Performance and evaluation of gas-engine-driven split-system cooling equipment at the Willow Grove Naval Air Station. Office of Scientific and Technical Information (OSTI), January 1997. http://dx.doi.org/10.2172/477531.

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Garg, Manish, O. Hanuma Kumar, Nagendra Prasad, and Veerabathra Swamy. Experimental and CFD Simulation-Based Analytical Optimization of Air-Cooling System for a Small 4-Stroke Scooter Engine. Warrendale, PA: SAE International, October 2005. http://dx.doi.org/10.4271/2005-32-0026.

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