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Artykuły w czasopismach na temat „Supercharger”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 3 lutego 2022

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1

Radu, Sebastian, Marius Hârceagă, Gheorghe Alexandru Radu, Cristian Leahu, Horia Abăităncei i Marton Iakab-Peter. "Simulation Models of the Complex Type Pressure Wave Supercharger". Applied Mechanics and Materials 823 (styczeń 2016): 341–46. http://dx.doi.org/10.4028/www.scientific.net/amm.823.341.

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In order to efficiently supercharge Diesel engines with pressure wave superchargers it is necessary to correlate the superchargers rotation speed with certain parameters of the supercharged engine. For this purpose, to reduce the research costs and duration, simulation models can be used which help to determine the parameters which have a major impact on the supercharger's rotational speed and efficiency. In this paper there are presented two simulation models: a one-dimensional (made in AMESim software) and a three dimensional (made in Fluent Software). This simulation models offer the possibility to visualize some dynamic phenomenon within the supercharger, like the evolution of the pressure waves or the turbulent flow inside the rotor channels. These phenomena are difficult and expensive to study with conventional methods.

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2

Leahu, Cristian Ioan, Anghel Chiru i Stelian Tarulescu. "A Modality to Optimize Common Functioning of a Pressure Wave Supercharger with an Internal Combustion Engine". Applied Mechanics and Materials 772 (lipiec 2015): 350–54. http://dx.doi.org/10.4028/www.scientific.net/amm.772.350.

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The functional constructive variants of the Hyprex and Comprex compressors with pressure wave built until the present are reduced in number. Starting from this ascertainment, the paper proposes to highlight the optimization on joint functioning of existing pressure wave supercharger models with internal combustion engines. This is possible due to the efficiency of the supercharging process, realized with such superchargers, which depends on the correlation grade between the rotational speed of the supercharger and the pressure of the exhaust gasses that enter in the compressor's channels, reason due to, a single supercharger model can be capable to supercharge efficiently engines with different characteristics, if the optimal values for the driving speed of the pressure wave supercharger are identified (according to the method proposed in the work) and adapted (according the level of energetic and/or ecologic performances that the engine should achieve) for each type of engine apart.

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Leahu, Cristian Ioan, Anghel Chiru, Dan Dogariu i Gabriel Mitroi. "Dual Supercharging with Turbocharger and Pressure Wave Supercharger". Applied Mechanics and Materials 823 (styczeń 2016): 329–34. http://dx.doi.org/10.4028/www.scientific.net/amm.823.329.

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TThe efficiency of the turbochargers is not satisfactory while the supercharged engine is working at low speeds. The dual supercharging can represent a solution to improve the supercharging process efficiency of the turbochargers. Due to the different functioning principles of the turbochargers and the pressure wave superchargers, this compressors are not having the same efficiency when the engines is running at a certain speed. The pressure wave superchargers can operate with a satisfactory efficiency at low-medium engine speeds. For this reason the dual supercharging with turbocharger-pressure wave supercharger is making the supercharging processes applied on engines more efficient. The two supercharging compressors are compressing the intake air by using a part of the exhaust gases energy. Due to the pressure wave supercharger rotor is having only gas distribution role, the power needed to drive it is reduced. The driving of the rotor can be realized by the crankshaft or by an electric motor.

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Wang, Tao, Bo Li, QiangQiang Peng, ZhiLong He i XueYuan Peng. "Flow Field Simulation and Noise Control of a Twin-Screw Engine-Driven Supercharger". Mathematical Problems in Engineering 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/9696858.

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With the advantages of good low-speed torque capability and excellent instant response performance, twin-screw superchargers have great potential in the automobile market, but the noise of these superchargers is the main factor that discourages their use. Therefore, it is important to study their noise mechanism and methods of reducing it. This study included a transient numerical simulation of a twin-screw supercharger flow field with computational fluid dynamics software and an analysis of the pressure field of the running rotor. The results showed that overcompression was significant in the compression end stage of the supercharger, resulting in a surge in airflow to a supersonic speed and the production of shock waves that resulted in loud noise. On the basis of these findings, optimization of the supercharger is proposed, including expansion of the supercharger exhaust orifice and creation of a slot along the direction of the rotor spiral normal line at the exhaust port, so as to reduce the compression end pressure, improve the exhaust flow channel, and weaken the source of the noise. Experimental results showed that the noise level value of the improved twin-screw supercharger was significantly lower at the same speed than the original model, with an average decrease of about 5 dB (A).

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5

Merala, Raymond, Mont Hubbard i Takashi Miyano. "Modeling and Simulation of a Supercharger". Journal of Dynamic Systems, Measurement, and Control 110, nr 3 (1.09.1988): 316–23. http://dx.doi.org/10.1115/1.3152688.

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A dynamic model is developed for simulating and predicting performance for superchargers of relatively arbitrary geometric configuration. A thermodynamic control volume approach and bond graph models are used to derive continuity and energy equations linking the various control volumes. Bond graphs also serve to study and understand the causal implications of laws governing flows between control volumes and system dynamics. Heat transfer is neglected. Simulation outputs include time histories of pressure, temperature, mass, and energy associated with each control volume, time histories of the various flows in the supercharger, and overall volumetric efficiency. Volumetric efficiencies are predicted over a wide range of speed/pressure ratio combinations and are within three percent of experimentally measured values. The simulation is used to investigate the sensitivity of supercharger performance to several key design parameters, including rotor-rotor separation, and rotor-housing and side plate clearance distances.

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6

He, Yongsheng, David Sun, Jim Liu i Bin Zhu. "Optimization of a turbocharger and supercharger compound boosting system for a Miller cycle engine". Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, nr 2 (14.03.2017): 238–53. http://dx.doi.org/10.1177/0954407017695136.

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This paper describes the design optimization of a compound boosting system consisting of a turbocharger and a supercharger for a 2.0 l four-cylinder Miller cycle engine which has a high expansion ratio of 12.0:1 and variable valve actuation. Various system configurations and supercharger sizes were evaluated numerically and experimentally to reduce the supercharger power consumption and the engine fuel consumption while maintaining the same engine torque performance in steady-state conditions. The supercharger–turbocharger boosting system with a V400 supercharger showed an average engine fuel consumption that was 2.8% lower in boosted conditions than did the turbocharger–supercharger boosting system with the same V400 supercharger; this was predicted by engine cycle simulations and verified by experiments. When the supercharger was placed upstream of the turbocharger, the supercharger inlet pressure was lower and the total mass flow rate through the supercharger was reduced, which reduced the supercharger power consumption and the bypass air flow. The turbocharger–supercharger boosting system with a smaller supercharger (R340 or V250) significantly improved the engine efficiency (by 3.3% or 5.0% respectively in comparison with the turbocharger–supercharger boosting system with a V400 supercharger), by reducing the mass air flow rates through the supercharger and minimizing the supercharger power consumption. The turbocharger–supercharger boosting system with a V250 supercharger achieved the lowest engine fuel consumption in full-load conditions of all the turbocharger and supercharger compound boosting system options evaluated for the 2.0 l Miller cycle engine on the basis of the simulation results. This study defined the optimal system layout and the optimal supercharger size for implementing the turbocharger and supercharger compound boosting system on a 2.0 l Miller cycle spark ignition engine to maximize the improvement in the fuel economy of the vehicle while maintaining the same torque performance.

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7

Hu, Bo, James WG Turner, Sam Akehurst, Chris Brace i Colin Copeland. "Observations on and potential trends for mechanically supercharging a downsized passenger car engine:a review". Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231, nr 4 (5.08.2016): 435–56. http://dx.doi.org/10.1177/0954407016636971.

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Engine downsizing is a proven approach for achieving a superior fuel efficiency. It is conventionally achieved by reducing the swept volume of the engine and by employing some means of increasing the specific output to achieve the desired installed engine power, usually in the form of an exhaust-driven turbocharger. However, because of the perceptible time needed for the turbocharger system to generate the required boost pressure, a characteristic of turbocharged engines is their degraded driveability in comparison with those of their naturally aspirated counterparts. Mechanical supercharging refers to the technology that compresses the intake air using the energy taken directly from the engine crankshaft. It is anticipated that engine downsizing which is realised either solely by a supercharger or by a combination of a supercharger and a turbocharger will enhance a vehicle’s driveability without significantly compromising the fuel consumption at an engine level compared with the downsizing by turbocharging. The capability of the supercharger system to eliminate the high exhaust back pressure, to reduce the pulsation interference and to mitigate the surge issue of a turbocharged engine in a compound-charging system offsets some of the fuel consumption penalty incurred in driving the supercharger. This, combined with an optimised down-speeding strategy, can further improve the fuel efficiency performance of a downsized engine while still enhancing its driveability and performance at a vehicle level. This paper first reviews the fundamentals and the types of supercharger that are currently used, or have been used, in passenger car engines. Next, the relationships between the downsizing, the driveability and the down-speeding are introduced to identify the improved synergies between the engine and the boosting machine. Then, mass production and prototype downsized supercharged passenger car engines are briefly described, followed by a detailed review of the current state-of-the-art supercharging technologies that are in production as opposed to the approaches that are currently only being investigated at a research level. Finally, the trends for mechanically supercharging a passenger car engine are discussed, with the aim of identifying potential development directions for the future. Enhancement of the low-end torque, improvement in the transient driveability and reduction in low-load parasitic losses are the three main development directions for a supercharger system, among which the adoption of a continuously variable transmission to decouple the supercharger speed from the engine speed, improvement of the compressor isentropic and volumetric efficiency and innovation of the supercharger mechanism seem to be the potential trend for mechanically supercharging a passenger car engine.

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8

Zhang, Peng Qi, Dong Hui Zhao, Peng Wu i Yin Yan Wang. "465Q Gasoline Engine Turbocharger Matching and Performance Calculation". Advanced Materials Research 500 (kwiecień 2012): 223–29. http://dx.doi.org/10.4028/www.scientific.net/amr.500.223.

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This article take the Dongan 465Q non-supercharged engine as the research object, the simulation model is built by GT-POWER and the corresponding test bench is set up. The simulation error is less than 3%, which indicates that the parameters of this model is correct, and can be used for further study of the gasoline engine. The supercharger, Garrett GT12, is selected by the matching calculation. The non-supercharged 465Q engine is modified as a turbocharged engine. The test results show that the power and the fuel consumption of the turbocharged engine is improved obviously, whose power is increased by 48% and fuel consumption is reduced by 4%.

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9

Takagi, Yasuo, Takashi Nakanishi, Kouji Kawabe i Norio Ogohi. "Supercharger Assist System for High Supercharged High Speed Marine Diesel Engine". JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 35, nr 4 (2000): 280–84. http://dx.doi.org/10.5988/jime1966.35.280.

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10

Hu, Chun Xiao, Hua Bing Zhu i Hui Juan Ye. "Simulator of Hydraulic Supercharger Based on Virual Instrument". Advanced Materials Research 548 (lipiec 2012): 627–31. http://dx.doi.org/10.4028/www.scientific.net/amr.548.627.

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In order to build a platform for overhaul and simulation training of CCIS (Command Control Information System), the simulation model of the hydraulic supercharger was established. By the model the simulator of hydraulic supercharger was designed and developed based on virtual instrument technology and SCM (single chip microcomputer) technology, the software of the simulator which was designed by the LabWindows/CVI provided a virtual interface and the hardware of the simulator which was developed with the SCM system gave the correct signal. As a result, when the simulator of hydraulic supercharger was connected to the CCIS, the simulation result was realized to be consistent with the real hydraulic supercharger.

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11

Dones, Raymond P. "Pulsed catalytic supercharger silencer". Journal of the Acoustical Society of America 89, nr 3 (marzec 1991): 1486. http://dx.doi.org/10.1121/1.400603.

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12

Mueller, Robert S. "Supercharger with reduced noise". Journal of the Acoustical Society of America 82, nr 5 (listopad 1987): 1859. http://dx.doi.org/10.1121/1.395750.

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13

Zsiga, Norbert, Mario A. Skopil, Moyu Wang, Daniel Klein i Patrik Soltic. "Comparison of Turbocharging and Pressure Wave Supercharging of a Natural Gas Engine for Light Commercial Trucks and Vans". Energies 14, nr 17 (26.08.2021): 5306. http://dx.doi.org/10.3390/en14175306.

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To increase the efficiency of a natural gas engine, the use of a Miller camshaft was analysed. To avoid a decline in the low-end torque and also in the transient response, a pressure wave supercharger (Comprex™) was compared to the conventional single-stage turbocharger. The analyses for this conceptual comparison were performed experimentally, and the data were then used to run simulations of driving cycles for light commercial vehicles. A torque increase of 49% resulted at 1250 rpm when the Comprex™ was used in combination with a Miller camshaft. Despite the Miller camshaft, the Comprex™ transient response was still faster than the turbocharged engine. Using the same camshaft, the turbocharged engine took 2.5-times as long to reach the same torque. Water injection was used to increase the peak power output while respecting the temperature limitations. As the Comprex™ enables engine braking by design, we show that the use of friction brakes was reduced by two-thirds. Finally, a six-times faster catalyst warmup and an up to 90 °C higher exhaust gas temperature at the three-way catalytic converter added to the benefits of using the Comprex™ supercharger. The known drawbacks of the Comprex™ superchargers were solved due to a complete redesign of the machine, which is described in detail.

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14

Wu, Yang, i Dan Yi. "Analysis and prevention of the causes of the turbocharger leak". Modern Electronic Technology 1, nr 1 (1.10.2017): 13. http://dx.doi.org/10.26549/met.v1i1.492.

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The turbocharger is the key component of the car to realize energy conservation and emission reduction. Based on the analysis of the potential causes of the oil leakage in the daily work of the vehicle supercharger, the measures taken to prevent the leakage of the supercharger and the precautions of daily use and maintenance are described.

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15

Hu, Bo, Sam Akehurst, Andrew GJ Lewis, Pengfei Lu, Darren Millwood, Colin Copeland, Edward Chappell, Andrew De Freitas, James Shawe i Dave Burtt. "Experimental analysis of the V-Charge variable drive supercharger system on a 1.0 L GTDI engine". Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, nr 4 (16.10.2017): 449–65. http://dx.doi.org/10.1177/0954407017730464.

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A compound charging system that pairs a turbocharger with a supercharger seems to be a potential trend for future passenger car gasoline engines, as the strength of both could be enhanced and the deficiencies of each could be offset. The use of a fixed-ratio positive-displacement supercharger system on a downsized turbocharged gasoline engine has already appeared on the market. Although such systems can achieve enhanced low-end torque and improved transient response, several challenges still exist. An alternative solution to the fixed-ratio positive-displacement supercharger is the V-Charge variable ratio centrifugal supercharger. This technology utilizes a Torotrak continuously variable transmission (CVT) coupled to a centrifugal compressor for near silent boosting. With a wide ratio spread of 10:1 and rapid rate of ratio change, the compressor speed can be set independently of the engine speed to provide an exact boost pressure for the required operating points, without the need to recirculate the air through a bypass valve. A clutch and an active bypass valve can also be eliminated, due to the CVT capability to down-speed, thus improving the noise vibration and harshness performance. This paper will, for the first time, present and discuss the V-Charge technology optimization and experimental validation on a 1.0 L GTDI engine to achieve a better brake specific fuel consumption and transient response over the turbo-only and the fixed-ratio positive-displacement supercharger solution. The potential for the V-Charge system to increase the low-end torque and enable a down-speeding strategy is also discussed.

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Arumugam, K., J. S. Senthilkumaar, K. Umanath i M. Sai Praveen. "Performance Combustion and Emission Characteristics of DI Diesel Engine with Use of Alternate Mechanism". Applied Mechanics and Materials 766-767 (czerwiec 2015): 1153–58. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.1153.

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The present work has carried out to enhance the engine performance with use of supercharger and exhaust gas recirculation (EGR). Experiments were conducted on a single cylinder DI diesel engine. Effects of EGR and supercharger on combustion and emissions of a diesel engine were investigated. Tests were performed on diesel engine under different load conditions. Results show that cooled EGR is an effective to reduce NOX, because it lowers the flame temperature and oxygen concentration in the combustion chamber. Increase the inlet mass flow rate of air with aid of supercharger increases the NOX formation and reduces the CO emission considerably. Increase of inlet air temperature with use of EGR has contrary effects on combustion and emission. Diesel engine with EGR at constant pressure is a way to drastically reduce the NOX. Meanwhile increase in CO and hydrocarbon emissions.

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Gan, Hui, Kun Yu Yang i Xiao Liang Yang. "Analysis of Structure Characteristics and Improvement of Turbo-Supercharger Bearing". Applied Mechanics and Materials 496-500 (styczeń 2014): 707–10. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.707.

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The reliability of the gas turbo-supercharger can be affected by the faults such as the cauterization of the floating bearing of the supercharger, the carbonization of the rotor and getting stuck, the deformation of the blade and heat cracking of the nozzle ring. The design scheme is proposed by using friction bearing taking the place of the floating bearing, because the main reason of the cauterization of the bearing is the increase of the inside clearance of the floating sleeve, which is testified by the actual rpm measurement of the floating sleeve on the floating bearing and the adjustment test of the inside and outside clearances of the bearing. The experimental study on the structural characteristics of turbocharger bearing effectively prevents turbo-supercharger floating bearing from being cauterized, solves the problem of thermal fatigue damage, and improves turbocharger reliability.

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18

Wetzel, Philip W., i Jon P. Trudeau. "New Supercharger for Downsized Engines". MTZ worldwide 74, nr 2 (luty 2013): 12–16. http://dx.doi.org/10.1007/s38313-013-0013-8.

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Ding, Wei Ya, Xue Wu Hu i Xiao Ming Sheng. "Double-Acting Air-Oil Intensifier Driven by Twin Roller Piston Air Cylinder". Applied Mechanics and Materials 220-223 (listopad 2012): 580–84. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.580.

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The double-acting air-oil intensifier designed in this paper can continuously output high pressure oil which meets the requirements of equipment that is high-pressure and with recirculation motion and it is driven by pneumatic substituting the independent hydraulic power source driven by electric motor. It consists of twin roller piston air cylinder, force amplifier, hydraulic cylinder and oil supercharger. The piston of air cylinder propelled by pressure gas makes cyclic motion and the driving force of piston increased by force amplifier pushes the piston of hydraulic cylinder and forces out hydraulic oil, then oil is input to the system after the second time when pressure amplification by oil superchargers. It has many advantages such as higher pressure ratio, compact structure, high efficiency, low cost and easy access to regulate pressure and flow rate.

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Fadhilah, A. R., i A. Rahman. "Dynamic Modeling and Simulation of Waste Energy Harvesting System for Urban Car". Advanced Materials Research 576 (październik 2012): 679–82. http://dx.doi.org/10.4028/www.scientific.net/amr.576.679.

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Single cylinder engine is capable of reducing harmful emission to the environment due to reduction in fuel consumption. On the other side, supercharger is known to be able to boost air to substantially improve the fuel economy of passenger cars. However, some amount of power is required by supercharger, thus reducing the efficiency of the engine. For improving the engine efficiency, waste heat energy from coolant is transferred to the boosted air before it flows into the combustion chamber. The system which functions as heat transfer is known as Waste Energy Harvesting System (WEHS). This system has been developed in order to supply enough boosted air for creating massive turbulence effect and auto oxidation to burn 100% of fuel with very short time. WEHS will contribute to reduce power loss due to heat release from the engine as well as reduce power consumed by the supercharger.

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Pan, Zhong Jian, Qing Hua He, Yong Guo, Yu Ming Zhao i Jing Yang. "Research on the Turbocharger Technology of Piston Aircraft Engine". Applied Mechanics and Materials 457-458 (październik 2013): 531–35. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.531.

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The supercharger technology of piston aviation engine determines its flight capabilities, and then establishes a turbocharger simulation model of an aviation piston engine. After simulating the engine ground features and 5000-meter altitude characteristics, and comparing the efficiency of compressor and turbocharger in different environments, after the installation of mechanical supercharger, gas flow has been improved, the cylinder pressure decreased about 10% compared with ground condition and engine altitude state power is restored, even 20,000 feet Power restored to 80%, which can meet the needs of high-altitude flight.

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Torkamandi, Shahed, Farhad Asadi i Gholamhasan Payganeh. "Increase of Fatigue on Piston and Connecting Rod in Using Supercharger". Advanced Materials Research 622-623 (grudzień 2012): 1243–47. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.1243.

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This research deals with analysis the fatique and the failure of piston engine using FEA.The objective of this research is to develop the geometry of piston engine using solidwork software and to investigate the maximum stress using stress analysis techniques to predict the failure of piston and connecting rod and identify the critical locations of the components of EF7 engine with supercharger and without supercharger. The finite element model of the components was analyzed the static stress with linear material model . first we discuss the amount of increased pressure in cylinder by supercharger and turbocharger then the influence of the inlet air pressure on the naturall aspirated engine which the main parts of its engine are not reinforced is taken account,then the result is showed the stress is increased by quantity of 273 MPA on piston and connecting rod which make the increase of fatigue on pistons and connecting rod and decrease in its period of working.The results can also significantly reduce the cost to produce the piston,and improve product reliability and improve the fatique strength and durability.

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Torkamandi, Shahed, Farhad Asadi i Gholamhasan Payganeh. "Supercharger of Engine without Time Delay". Advanced Materials Research 622-623 (grudzień 2012): 1231–35. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.1231.

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Since the invention of the internal combustion engines, Automotive engineers are finding ways to increase engine power that one way is supercharger. It was developed to assist internal combustion engines in improving performance and power of the engine, But these plans have deficiency as Intercoolers and Turbo Lag and etc.but this new designed system to cause launching a diaphragm pump by use of the linear motion in suspension system then compressed air is stored in tank and by using the directional control valve 3/4 with the states of off-sport 1and sport 2 we can increase engine power. The results of torque ,BSFC(Brake specific fuel consumption) and indicator diagrams(p-v) show increased horsepower And the advantages of this plan are that we don’t have turbo lag for the sudden acceleration and also due to the air tank for supplying mass flow-rate the vehicle can cross the shallow water and submerged.

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Macek, Jan, Oldřich Vítek, Luděk Pohořelský i Zdeněk Žák. "Pressure wave supercharger 0-d model". Journal of Middle European Construction and Design of Cars 9, nr 1 (1.11.2011): 32–39. http://dx.doi.org/10.2478/v10138-011-0005-1.

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SHRNUTI Přispěvek představuje využiti a potencial 0-D algebraickeho modelu tlakoveho vyměniku. Tlakovy vyměnik je nestacionarni zařizeni, ktere využiva tlakovych vln ke stlačovani tekutin v serii axialnich kanalků. Ke stlačovani dochazi přenosem energie z vysokotlakeho do nizkotlakeho proudu bez odděleni pevnymi stěnami. 0-D model vychazi z fyzikalniho popisu procesů uvnitř tlakoveho vyměniku. Zjednodušeny popis procesů je korigovan kalibračnimi koeficienty určenymi pomoci 1-D modelu. Kalibračni koeficienty jsou do 0-D modelu přenesny regresnimi funkcemi.

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Gan, Hui, i Kun Yu Yang. "Structure Characteristics and Improvement of Oil Seal of Turbo-Supercharger". Advanced Materials Research 779-780 (wrzesień 2013): 1130–33. http://dx.doi.org/10.4028/www.scientific.net/amr.779-780.1130.

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Through the analysis of the sealing mechanism of the oil seals in exhaust gas turbo supercharger and the comparative test of different oil seals with the pressure change in the oil-return chamber, a seal that uses a caulking ring with reverse threads is designed, and an optimum combination of oil seal is selected. The combination of caulking ring and the oil-return thread structure has better complementary action on oil sealing, because for the seal with oil-return reverse thread there is better dynamic and static seal effect on ring seal and has good sealing performance and high reliability at high speed. The test results of screening selection of combination seals show that different combinations of caulking ring and the oil-return threads have great influence on the pressure of the oil-return chamber. The combination of caulking ring outside and oil-return threads inside is recommended to be used. In addition, the smooth return of the oil can be ensured as far as possible by increasing the supercharger oil-return chamber volume. The improved structure of the oil seal has effectively enhanced the reliability of the whole unit of the exhaust gas turbo supercharger.

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Zheng, Kun Peng, Zhen Biao Wei i Bao Zhan Qin. "Application Research of Electrical Supercharger for Improving Performances of Diesel Engine under Plateau Environment". Applied Mechanics and Materials 552 (czerwiec 2014): 211–15. http://dx.doi.org/10.4028/www.scientific.net/amm.552.211.

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Against the problems that the working performances deterioration of high-power engine under plateau environment, an electric supercharger system is designed by applying modern control and sensor technology, and after testing performances of the electric supercharger multiple times, the system is optimized according to the internal flow field distribution and export flow characteristics. The tests prove that the system which controlled by electric control device can achieve transient air supply rapidly. Then increased the air flow rate significantly, and it is able to recover the most of the power in low speed part, which propose the feasible way to the problem of engine intake air shortage under plateau environment.

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Lahoida, A. I., i L. I. Lahoida. "INVESTIGATION OF THE AMPLITUDE STABILITY RELATION OF A MATHEMATICAL MODEL OF A CENTRIFUGAL PUMP OF A PUMPING UNIT AS AN OBJECT OF CONTROL WITH A DEGREE OF GAS PRESSURE". METHODS AND DEVICES OF QUALITY CONTROL, nr 2(43) (24.12.2019): 111–19. http://dx.doi.org/10.31471/1993-9981-2019-2(43)-111-119.

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Using the experimental data obtained intheprocesso fchange inthetime of the degree of increase in gas pressure, as well as the performance of the centrifugal supercharger of the gas pumping unit, . Digitization of graphs of change of degree of increase of pressure of gas, and also productivity of the centrifugal supercharger of gas-pumping unitis made with the help of software Graph2Digit. The digitization wasper formed with a sampling period of 0.3 s. The number of values forth edegree of increase of gaspressure, as well as the performance of the centrifugal pump gas pumping unitis 581 each. The experimental data are divide dinto ranges (1 - 811 sec - 818 sec; 2 - 818 sec - 825 sec; 3 - 811 sec - 831 sec; 4 - 825 sec - 831 sec; 5 - 827 pp. - 832 pp .; 6 - 829 pp. - 831 pp.). In the course of the study, the mathematical expectation for each of the intervals, as well as the spectral density equation for the degree of gas pressure increase and the spectral density equation for the performance of the centrifugal supercharger of the gaspumping unit, were determined at appropriate intervals. Using there lation between the spectral densitiesand the fact function of the Matlab software product, which factorizes fractional-rational expression, the gear function saredetermine date achinter valand the stability stocks are determine dusing the Nyquist criterion. The plot of the stability reserve of the centrifugal supercharger of the gas pumping unit as an object of control from the mathematical expectation, which is obtained on the basis of the spectral density ratios, is made. This dependency is approximated by the CurveExpert Professional software to select the optimalma them at icalmodel. From the set of results, the one with the high estcorrelation coefficient and the small eststandard error isselected.

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El-Askary, A. H., S. A. Wilson, A. R. Syam i K. A. Omara. "THEORETICAL INVESTIGATION INTO A PRESSURE WAVE SUPERCHARGER". ERJ. Engineering Research Journal 35, nr 2 (1.04.2012): 109–21. http://dx.doi.org/10.21608/erjm.2012.67123.

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SATOH, Manabu, Katsuhiro ITOH, Osamu ONODERA, Kazuyoshi TAKAYAMA i Makoto TSUJITA. "Numerical simulation of a shock wave supercharger." Transactions of the Japan Society of Mechanical Engineers Series B 55, nr 509 (1989): 95–100. http://dx.doi.org/10.1299/kikaib.55.95.

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30

Rothgang, Stefan, Michael Pachmann, Sven Nigrin i Markus Von Scheven. "The Electric Supercharger — Challenge, Conception and Implementation". Auto Tech Review 5, nr 3 (marzec 2016): 26–31. http://dx.doi.org/10.1365/s40112-016-1102-2.

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31

George, Sunoj C., Guy D. Morris, Jon Dixon i David A. Pearce. "Nonlinear Thermal Modelling of an Electrical Supercharger". IFAC Proceedings Volumes 37, nr 22 (kwiecień 2004): 507–12. http://dx.doi.org/10.1016/s1474-6670(17)30394-4.

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32

Moss, Sanford A. "THE GENERAL, ELECTRIC TURBO-SUPERCHARGER FOR AIRPLANES". Journal of the American Society for Naval Engineers 32, nr 3 (18.03.2009): 586–96. http://dx.doi.org/10.1111/j.1559-3584.1920.tb04899.x.

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Costiuc, Iuliana, i Anghel Chiru. "EVOLUTION of the Pressure Wave Supercharger Concept". IOP Conference Series: Materials Science and Engineering 252 (październik 2017): 012081. http://dx.doi.org/10.1088/1757-899x/252/1/012081.

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Mimmi, G. C., i P. E. Pennacchi. "Dynamic Loads in the Three-Lobe Supercharger". Journal of Mechanical Design 121, nr 4 (1.12.1999): 602–5. http://dx.doi.org/10.1115/1.2829505.

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In previous papers the authors have analyzed the functioning of the three lobe supercharger. This analysis was made possible by a complete analytical model of the rotors. The dynamic transformation of the chambers occupied by the fluid allows us to point out specific problems regarding trapped volumes and to design special devices to avoid these problems. As a result it is possible to simulate the performance of the compressor and to propose an analytical model in order to determine the dynamic loads on the rotors. The topic of this paper is the comparison between the performances achieved by helical and spur rotors, with particular attention to the loads, force and moment, acting on the rotors.

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35

Rothgang, Stefan, Michael Pachmann, Sven Nigrin i Markus von Scheven. "The Electric Supercharger Challenge, Conception and Implementation". MTZ worldwide 76, nr 9 (sierpień 2015): 4–9. http://dx.doi.org/10.1007/s38313-015-0035-5.

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Richards, Bryn, Kevin Gray i James Tran. "Achieving Continuous Boost with an Electric Supercharger". MTZ worldwide 77, nr 5 (15.04.2016): 56–61. http://dx.doi.org/10.1007/s38313-016-0021-6.

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Rogovyi, A. "Energy performances of the vortex chamber supercharger". Energy 163 (listopad 2018): 52–60. http://dx.doi.org/10.1016/j.energy.2018.08.075.

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Pavlechko, V. N., i O. A. Petrov. "Coupling Between Velocities in a Radial Supercharger". Journal of Engineering Physics and Thermophysics 87, nr 2 (marzec 2014): 359–66. http://dx.doi.org/10.1007/s10891-014-1020-6.

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39

Lei, Yan, Hong Guang Zhang, Da Sen Zhou i Xiao Lei Bai. "Emission Performance of a Diesel Engine with Pressure-Wave Supercharger". Advanced Materials Research 383-390 (listopad 2011): 6168–73. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.6168.

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Pressure-wave supercharger (PWS) is one technical way to boost the engine intake air pressure. PWS has several advantages such as less emission (especially NOx emission), rapid response when load changes, higher torque even at low engine speed. In this research a 493 diesel engine is charged by a pressure-wave supercharger (PWS). The emission performance of the PWS diesel engine is mainly investigated. Together with experimental test, the CFD simulation is completed basing on a 3D model of the PWS rotor channel. The CFD simulation results show that the inner EGR phenomenon happens especially when PWS runs at middle PWS rotational speed with part load. The test results demonstrate that the PWS diesel engine performs well with less NOx and soot emissions than the turbocharged diesel engine.

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Ren, Zheng Yi, Qing Fen Li, Xiao Li Zhao i Li Kun Li. "Self-Oscillation Cavity Design and Flow Field Analysis of Pipeline Supercharger". Key Engineering Materials 452-453 (listopad 2010): 177–80. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.177.

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The self-oscillation device has many advantages and is therefore suggested to be used in the pipeline supercharger. Simulation and analysis on the pressure-increasing effect of the pipeline supercharging caused by self-oscillation cavity were carried out by finite element method. The cavity structure of self-oscillation device was designed using the fluid network theory, natural frequency calculation, resonance conditions and Large Eddy Simulation Theory. A series of flow field distribution chart of the self-oscillation cavity were obtained. Results validate that the self-oscillation device is effective to increase the pressure of the pipeline supercharger. The relation curves of pressure-increasing effect with different structure parameters of the cavity were further analyzed. Previous experimental results are accordant with the present simulation results. It shows that the numerical analyses are reliable.

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41

Fatsis, A., N. G. Orfanoudakis, D. G. Pavlou, A. Panoutsopoulou i N. Vlachakis. "Unsteady flow modelling of a pressure wave supercharger". Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 220, nr 2 (luty 2006): 209–18. http://dx.doi.org/10.1243/095440706x72628.

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Menegazzi, Pascal, Yiming Wu i Vincent Thomas. "Design of an electric supercharger for downsized engines". MTZ worldwide 74, nr 11 (30.09.2013): 36–41. http://dx.doi.org/10.1007/s38313-013-0113-5.

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Payri, F., J. Benajes i M. Reyes. "Modelling of supercharger turbines in internal-combustion engines". International Journal of Mechanical Sciences 38, nr 8-9 (sierpień 1996): 853–69. http://dx.doi.org/10.1016/0020-7403(95)00105-0.

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Gorbijchuk, M. I., O. T. Bila, B. V. Pashkovskyi i N. T. Lazoriv. "ALGORITHMIC AND SOFTWARE OF THE COMPUTER SYSTEM FOR THE SELECTION OF OPTIMAL QUANTITY OF NATURAL GAS OPERATING PARALLEL WORKERS". METHODS AND DEVICES OF QUALITY CONTROL, nr 1(42) (27.06.2019): 47–55. http://dx.doi.org/10.31471/1993-9981-2019-1(42)-47-55.

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In connection with reduction of volumes of transporting of gas through the gas-transport system of Ukraine the issue of the day is the rational loading of the compressor stations taking into account the technical state of gascompressor units. The mathematical model was developed in the article on principles of fuzzy logic, that gave an opportunity to define the technical state of gascompressor units that are working in parallel taking into account such parameters as the productivity of supercharger, expense of fuel gas, pressure and temperature on an entrance, pressure and temperature on the exit of centrifugal supercharger, temperature of products of combustion on an exit from the turbine of LP, frequency of rotation of shaft of the supercharger, temperature and pressure of environment, vibrospeed and vibroacceleration, speed of accumulation product of triggering in agile olive, concentration oxide nitrogen and carbon in exhaust-gas. The expense of fuel gas, that is measured by facilities of regular automation, depends on many factors such as atmospheric pressure, ambient temperature, physical and chemical properties of fuel gas, technical state and type of turbo-engine. All that grounds to consider the expense of fuel gas an unclear value. Experimental researches on the base of Bohorodchany compressor station showed, that unclear value the "expense of fuel gas" has Gauss function of belonging. Therefore the task of choice of optimal amount of aggregates working in parallel is formalized as a task of integer of the linear programming, the criterion of optimality in that is a cost of fuel gas that consumes the compressor station taking into account the technical state of gascompressor units and unclearness of expense of fuel gas. Efficiency of the worked out method is confirmed by calculations that are based on industrial data received during exploitation of Bohorodchany compressor station.

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Ahmedi, Ranaji Arib Hafiz Ayyub Akbar. "Forced Induction Technologies in an IC Engine: A Review". International Journal for Research in Applied Science and Engineering Technology 9, nr VI (25.06.2021): 2766–70. http://dx.doi.org/10.22214/ijraset.2021.35582.

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This study has been undertaken to show the performance enhancement of engines using different Forced induction technologies. Forced induction technology like turbocharging and supercharging can enhance the performance of an internal combustion engine by compressing inlet air charge, allowing full engine power to be produced efficiently. As the fuel economy and greenhouse emission standards are projected to be far more stringent globally, the use of a Forced induction engine in passenger cars and light-duty trucks has become an inevitable trend within the automotive industry. A turbocharger system can effectively improve the power and torque of an engine, but turbo hysteresis exists. A mechanical supercharging system can boost at low speed, but the efficiency is lower. An electric supercharger can effectively improve the intake air at the early stage of accelerated working conditions, however, an electric supercharger will consume the engine power. The addition of Forced induction technologies to an IC engine helps with the scope of downsizing it. This review brings forward all the aspects of Forced induction technologies

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46

ZHOU, Hongxiu. "Numerical Simulation and Characteristic Analysis of Novel Whirlwind Supercharger". Journal of Mechanical Engineering 46, nr 24 (2010): 118. http://dx.doi.org/10.3901/jme.2010.24.118.

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Xiao, Hua Pan, Zi Fan Fang, Jing Fang, Hui Li, Kong De He i Wei Hua Yang. "The Structure Design and Exhaust Mechanism on Hybrid Supercharger". Applied Mechanics and Materials 419 (październik 2013): 209–16. http://dx.doi.org/10.4028/www.scientific.net/amm.419.209.

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Aiming at solving the problem of underwater exhaust for underwater vehicle, a new underwater exhaust scheme is presented with structure and power supercharger, which the structure design is analyzed and studied. Firstly, the fluid characteristic is analyzed in junction between the exhaust pipe of diesel and the pressure pipe of air compressor. The connection type of them is presented and the exhaust mechanism is proved that low pressure gas can exhaust out from exhaust pipe by entrainment. Subsequently, based on the Bernoulli principle, the flow distribution is analyzed in the branch pipe. Finally, taking exhaust performance as optimum target, the parameter optimization design is carried out for branch pipe by using DOE; the optimal structure size is also obtained for exhaust pipe by regression analysis. The research result predicts that a new underwater exhaust scheme and its design theory are presented in this paper.

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48

Ivanov, I. E., I. V. Alekseev i S. N. Bogdanov. "Dimensionless Analysis of Supercharger Turbines in Internal-Combustion Engines". Russian Engineering Research 37, nr 12 (grudzień 2017): 1077–80. http://dx.doi.org/10.3103/s1068798x1712005x.

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Bae, Jae-Il, i Sin-Chul Bae. "A study on the engine downsizing using mechanical supercharger". Journal of Mechanical Science and Technology 19, nr 12 (grudzień 2005): 2321–29. http://dx.doi.org/10.1007/bf02916473.

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Lee, Chang Sik, Ki Hyung Lee, Dong Hyun Whang, Seo Won Choi i Haeng Muk Cho. "Supercharging performance of a gasoline engine with a supercharger". KSME International Journal 11, nr 5 (wrzesień 1997): 556–64. http://dx.doi.org/10.1007/bf02945268.

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