Готові списки джерел за темами / Internal Combustion Engineering

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Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Internal Combustion Engineering"

1

Chatain, H. G. "INTERNAL COMBUSTION ENGINEERING. TREATMENT OF HYDROCARBON FUELS*." Journal of the American Society for Naval Engineers 29, no. 3 (March 18, 2009): 574–79. http://dx.doi.org/10.1111/j.1559-3584.1917.tb00137.x.

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2

Reitz, Rolf D. "Combustion and ignition chemistry in internal combustion engines." International Journal of Engine Research 14, no. 5 (October 2013): 411–15. http://dx.doi.org/10.1177/1468087413498047.

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3

Makarov, A. R., S. V. Smirnov, S. V. Osokin, I. S. Pyatov, Y. I. Vrublevskaya, and L. A. Finkelberg. "Engineering materials for pistons of internal combustion engines." Izvestiya MGTU MAMI 7, no. 1-1 (January 10, 2013): 118–25. http://dx.doi.org/10.17816/2074-0530-68244.

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This article provides an overview of modern construction materials for production of pistons for internal combustion engines including composites. A comparison of mechanical and thermal properties of these materials is presented. It is reported on the experience of production of pistons made from carbon composite in Russia.
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4

Stone, C. R. "Book Review: Internal Combustion Engineering: Science and Technology." International Journal of Mechanical Engineering Education 22, no. 1 (January 1994): 74–75. http://dx.doi.org/10.1177/030641909402200110.

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5

Pekkan, K., and M. R. Nalim. "Two-Dimensional Flow and NOx Emissions in Deflagrative Internal Combustion Wave Rotor Configurations." Journal of Engineering for Gas Turbines and Power 125, no. 3 (July 1, 2003): 720–33. http://dx.doi.org/10.1115/1.1586315.

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A wave rotor is proposed for use as a constant volume combustor. A novel design feature is investigated as a remedy for hot gas leakage, premature ignition, and pollutant emissions that are possible in this class of unsteady machines. The base geometry involves fuel injection partitions that allow stratification of fuel/oxidizer mixtures in the wave rotor channel radially, enabling pilot ignition of overall lean mixture for low NOx combustion. In this study, available turbulent combustion models are applied to simulate approximately constant volume combustion of propane and resulting transient compressible flow. Thermal NO production histories are predicted by simulations of the STAR-CD code. Passage inlet/outlet/wall boundary conditions are time-dependent, enabling the representation of a typical deflagrative internal combustor wave rotor cycle. Some practical design improvements are anticipated from the computational results. For a large number of derivative design configurations, fuel burn rate, two-dimensional flow and emission levels are evaluated. The sensitivity of channel combustion to initial turbulence levels is evaluated.
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6

Jones, R. L. "Catalytic Combustion Effects in Internal Combustion Engines." Combustion Science and Technology 129, no. 1 (November 1, 1997): 185–95. http://dx.doi.org/10.1080/00102209708935725.

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7

Pulkrabek, Willard W. "Engineering Fundamentals of the Internal Combustion Engine, 2nd Ed." Journal of Engineering for Gas Turbines and Power 126, no. 1 (January 1, 2004): 198. http://dx.doi.org/10.1115/1.1669459.

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8

Nalim, M. R. "Assessment of Combustion Modes for Internal Combustion Wave Rotors." Journal of Engineering for Gas Turbines and Power 121, no. 2 (April 1, 1999): 265–71. http://dx.doi.org/10.1115/1.2817116.

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Анотація:
Combustion within the channels of a wave rotor is examined as a means of obtaining pressure gain during heat addition in a gas turbine engine. Three modes of combustion are assessed: premixed autoignition (detonation), premixed deflagration, and non-premixed autoignition. The last two will require strong turbulence for completion of combustion in a reasonable time in the wave rotor. The autoignition modes will require inlet temperatures in excess of 800 K for reliable ignition with most hydrocarbon fuels. Examples of combustion mode selection are presented for two engine applications.
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9

Borman, Gary, and Kazuie Nishiwaki. "Internal-combustion engine heat transfer." Progress in Energy and Combustion Science 13, no. 1 (January 1987): 1–46. http://dx.doi.org/10.1016/0360-1285(87)90005-0.

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10

Collings, Nick, Keith Glover, Bruce Campbell, and Stewart Fisher. "Internal combustion engine exhaust gas analysis." International Journal of Engine Research 18, no. 4 (July 29, 2016): 308–32. http://dx.doi.org/10.1177/1468087416656946.

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A generalized approach, based on linear algebra, is described for processing exhaust gas analyser data. Systematic methods of deriving useful relationships from arbitrary data are proposed and used to produce several novel and useful results, as well as to show how existing relationships may be derived in forms that involve no approximations. The methods developed lend themselves to automatic real-time assessment of the consistency of gas analyser data, and in the case of inconsistencies, identifying plausible reasons. The approach is also used to develop methods to examine storage and release mechanisms within after-treatment devices, such as oxygen storage/release in three-way catalysts, soot oxidation in particle filters and water condensation/evaporation.
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Більше джерел

Дисертації з теми "Internal Combustion Engineering"

1

Bishop, Robert Phelps. "Combustion efficiency in internal combustion engines." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15164.

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Анотація:
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING
Bibliography: leaf 26.
by Robert Phelps Bishop.
B.S.
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2

Green, Jeremy James. "Taguchi methods in internal combustion engine optimisation." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52475.

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Thesis (MScEng)--University of Stellenbosch, 2001.
ENGLISH ABSTRACT: Statistical experimental design techniques are powerful tools that are often approached with suspicion and apprehension by experimenters. The trend is to avoid any statistically structured and designed experimentation program, and to rather use the traditional method of following ones "gut feel". This approach, more often than not, will supply a satisfactory solution, but there is so much more information availablefor the same amount of effort. This thesis strives to outline the method and application of the Taguchi methodology of experimental design. The Taguchi method is a practical, statistical experimental design technique that does not rely on the designer's knowledge of the complex statistics typicallyneeded to design experimental programs, a fact that tends to exclude design of experiments from the averageengineers' toolbox. The essence of the statistical design of experiments is this: The traditional method of varying one variable at a time and investigating its effect on an output is no longer sufficient. Instead all the input variables are varied at the same time in a structured manner. The output trends resulting from each input variable are then statisticallyextracted from the data in the midst of the variation. Taguchi method achieves this by designing experiments where every level of every input variable occurs an equal number of times with every level of every other input variable. The experimental designs are represented in orthogonal arrays that are chosen and populated by the experimenter by following a simple procedure. Four case studies are worked through in this text and, where possible, compared to the "traditional" approach to the same problem. The case studies show the additional information and time savings availablewith the Taguchi method, as well as clearlyindicating the importance of using a stable system on which to do the experiments. The Taguchi method generated more information in fewer experiments than the traditional approaches as well as allowing analysis of problems too complex to analysewithout a statisticaldesign of the experimentation procedure.
AFRIKAANSE OPSOMMING: Statistiese eksperimentele ontwerptegnieke is besonder kragtige instrumente wat baie keer met agterdog deur ekspermenteerders beheen word. Die neiging is om enige statistiese gestruktureerde and ontwerpte eksperimentele program te vermy, en om liewer die tradisionele metode, wat op 'n mens se intuïsie staatmaak, te gebruik. Hierdie benadering sal baie keer 'n bevredigende oplossing gee, maar daar is veel meer inligting vir dieselfde hoeveelheid inspanning verkrygbaar, wanneer die Taguchimetode gebruik word. Hierdie tesis strewe om die metode en toepassing van die Taguchimetodologie van eksperimentele ontwerp voor te lê. Die Taguchimetode is 'n praktiese statistiese eksperimentele ontwerptegniek .wat nie op die ontwerper se kennis van komplekse statistiek om eksperimentele programme te ontwerp berus nie. Hierdie komplekse statistiek neig ook om eksperimentele ontwerp van die gemiddelde ingenieursvaardigehede uit te sluit. Die kern van statistiese eksperimentele ontwerp is die volgende: Die tradisionele metode van een veranderlike op 'n slag te varieer om die effek op die uitset te ondersoek, is onvoldoende. In plaas daarvan, word al die insetveranderlikes gelyktydig gevarieer in 'n gestruktureered manier. Die neigings van elke veranderlike is dan statisties ontleed van die data ten midde van die variasie van al die ander veranderlikes. Die Taguchimetode bereik die ontwerpte eksperimente deur elke vlak van elke insetveranderlik in 'n gelyke aantal keer met elke vlak van elke ander insetveranderlike te varieer. Hierdie is verteenwoordig deur ortogenale reekse wat gekies en gevul is deur 'n eenvoudige wisselpatroon te volg. Vier gevallestudies is deurgewerk en, waar moontlik, vergelyk met die tradisonele siening van dieselfde probleem. Die gevallestudies wys hoe toereikbaar die additionele inligting in die Taguchimethode toepassings is. Hulle beklemtoon ook die belangrikheid van 'n stabiele sisteem waarop die eksperimente berus. Die Taguchimetode het meer inligting verskaf met minder eksperimente as die tradisionele toenaderings, en ook toegelaat dat die analise van probleme, te kompleks om te analiseer sonder om 'n statistiese ontwerp van eksperimentele prosedure te volg, opgelos kon word.
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3

Taylor, Oliver. "Improving the performance of internal combustion engines through lubricant engineering." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:4db8f32e-8260-4cff-ad57-08bfa0b9568e.

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Low friction lubricant development provides a worthwhile contribution to vehicle CO2 emission reduction. Conventional low friction lubricant development focuses on empirical processes using out dated engine technology and old test methods. This strategy is inefficient and restricts the lubricant's potential. A new method proposed in the present research combines tribological simulations with rig, engine and vehicle tests. This approach provides insights undocumented until now. The contribution to CO2 emission reduction from individual engine components on vehicle drive cycles that include warm-up is predicted using lubricants down to the new SAE 8 viscosity grade. A bearing model is used to design the lubricant's non Newtonian characteristics to achieve friction reduction. An isoviscous lubricant with a viscosity of 4.6 cSt is shown to achieve the minimum friction in the bearing. The research shows that by starting with lubricants having kinematic viscosities higher than this value, it is possible to improve lubricant performance by lowering viscosity index (VI), introducing shear thinning, or reducing the density and pressure viscosity coefficient. Conversely, for lubricants with lower starting viscosities it is shown that higher VI values, more shear-stable lubricants and higher densities and pressure viscosity coefficients are required. The model predicts that high oil film pressures occur in the bearing and cause significant local lubricant viscosity increase (300%), indicating that the lubricant's pressure viscosity behaviour is important here, despite the contact being conformal. Simulation and motored engine testing establishes lubricant behaviour in the piston-to-bore conjunction. This analysis identifies a poor correlation between measured and predicted values at low engine speeds. A rig-on-liner tribometer shows that this error is attributable to a deficiency in the simulation's characterisation of boundary regime friction. An oil pump test determines how a modern variable displacement oil pump (and its control system) responds to lowering viscosity. The hypothesis that low viscosity lubricants cause the parasitic load from this component to increase is disproven using this component-level rig test. Chassis dynamometer testing compares the CO2 reduction performance of lubricant thermal management systems to the values achieved by reducing the viscosity grade. CO2 reductions of between 0.4% and 1.0% are identified using a cold-start new European drive cycle (NEDC) with a 5W-30 preheated to 60°C and 90°C respectively. Reductions in CO2 emissions between 0.4% and 1.2% are found on the NEDC by lowering the oil fill volume from 5.1 L to 2.1 L. For the unmodified case, a 3.7% reduction in CO2 emissions is reported by reducing the viscosity grade from a 5W 30 to an SAE 8 in the NEDC. The performance of a novel external oil reservoir is simulated to understand its ability to retain oil temperature during the vehicle cool-down procedure. An oil temperature of 65°C at the end of the soak period (following a prior test where the oil was assumed to reach 90°C) is predicted by installing insulation to the reservoir and indicates that a viable method to achieve the CO2 benefits identified through lubricant preheating tests exists. A full vehicle model combines the outputs from each of these sub-models to predict lubricant performance on the NEDC the new World-wide harmonized light duty test cycle (WLTC). This new approach provides a tool that enables next generation low friction lubricants to be developed. The model predicts that an SAE 8 lubricant can reduce CO2 emissions by 2.8% on the NEDC and 1.9% on the WLTC compared to a 5W-30. A theoretical experiment, where all lubricant related friction was deleted from the simulation, predicts that lubricant-related CO2 emissions are 8.7% on the NEDC and reduce to 6.3% on the WLTC. These results indicate that the planned adoption of the WLTC in September 2017 reduces the potential contribution to CO2 emission reduction from lubricants by 28%.
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4

Sone, Kazuo. "Unsteady simulations of mixing and combustion in internal combustion engines." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/12171.

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5

Bai, Dongfang Ph D. Massachusetts Institute of Technology. "Modeling piston skirt lubrication in internal combustion engines." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74901.

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Анотація:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 143-147).
Ever-increasing demand for reduction of the undesirable emissions from the internal combustion engines propels broader effort in auto industry to design more fuel efficient engines. One of the major focuses is the reduction of engine mechanical losses, to which the friction of the piston skirt is one important contributor. Yet there lacks a sufficient understanding of the skirt lubrication behavior to effectively optimize the piston skirt system in practice. The ultimate goal of this work is to develop a comprehensive model to advance the predictability of the skirt friction while integrating all the dynamic behavior of the piston secondary motion and the structural deformation of the piston skirt and cylinder liner. Major contributions of this work are analysis of and development of a model for the oil transport and exchange of the piston skirt region and its surroundings. The new oil transport model is composed with two elements. First, the oil scraped into the chamfer region by the oil control ring during a down-stroke is tracked and its accumulation and release to the skirt region are modeled. Second, oil separation and re-attachment are allowed in the skirt region, breaking conventional full-attachment assumption in lubrication studies. The new oil transport model together with hydrodynamic and boundary lubrication model were coupled with piston secondary motion and structural deformation of the piston skirt and cylinder liner. For numerical efficiency and physics clarity, we used different discretization for the lubrication from the structural deformation. The final model is robust and efficient. The discussion of the model results is focused mainly on the oil transport. There exist a general pattern in available oil for skirt lubrication, namely, skirt tends to be starved when it travels at the upper portion of a stroke. Comparison with visualization experiment for oil accumulation patterns show consistency between model prediction and observation. This work represents a major step forward to realistically predicting skirt friction and the influence of all the relevant design and operational parameters. However, oil supply to the region below the piston skirt can largely influence the outcome of the friction prediction and its mechanism is system dependent. Additionally, simple treatment of the oil transport in the current model is merely a first step to modeling the complex fluid problems involved. Improvements of this model based on application and further analysis will make it a more powerful engineering tool to optimize the skirt system to minimize its undesirable outputs.
by Dongfang Bai.
Ph.D.
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6

Korir, Patrick Kiprotich. "Experimental Study of Internal Injector Deposits In Internal Combustion Engines Using Renewable Fuels." Thesis, KTH, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299199.

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The  strive  to  minimize  emissions  in  the  automotive  industry  keeps gaining momentum. Continuous improvement of engine designs and development of more efficient  fuel  systems  in  diesel  vehicles  is  a  solution to  be  applauded.  More importantly is the growing shift to use of renewable fuels in internal combustion engines.  With  countries  implementing  tighter regulations  on  emissions,  and markets  have  witnessed  a  rise  in  the  use of  biofuels.  Subsequently, the fuel quality varies from market to market. Blending  of  different  fuels  changes  the properties  of  fuel  as  solubility  of some  compounds  reduce.  Consequently,  soft particles  which  are precipitated  in  the  process  have  been  linked  to  deposit formation of internal diesel injector deposits (IDIDs). This project aims at investigating IDIDs and possible conditions that enhance their  formation  in  the  injector.  An injector test rig operating at actual engine pressures (>2000 bars) has been constructed for this purpose.  Test fuel for use in the rig is prepared at Scania by introducing soft particles into B10 fuel. Start of the test rig was performed by checking component functionality and pressure test. Due to leakage problem, a redesign of fuel collection cup was done. Evaluation of test fuel  was  carried  to  determine  the  suitability  for deposit  formation  in  the injector. Two screening tests were carried to investigate sticky deposit formation using the test fuel. Autoclave test was carried out at temperature of 150 0C over a period of up to four days. Frying pan test was performed to evaluate formation of deposits with increase in temperature between 90 0C to 230 0C. Analysis was carried out using SEM-EDX, GC-MS and FTIR instruments. The test fuel prepared at Scania for replication of deposits in the injector yielded positive results. Sticky deposits formed during the frying pan test evidenced by stretchy and sticky residue on the pan. FTIR analysis showed that the presence of metal carboxylate which is as a result of the metal ion soft particles. Autoclave tests showed formation of brown deposits on the vessel. SEM-EDX analysis of the brown deposits gave great insights on the morphology of the deposit contrasted to the structure of soft particles initially present in the test fuel. Soft particles are small and smeary with a regular shape while the deposits are large, irregular, agglomerated and rough in texture.  This is important in understanding the transformation mechanism of soft particles to deposits. A combination of calcium and sodium soft particles in the test fuel showed better ability to form deposits during   the   autoclave   test.   GC-MS   analysis   showed   huge   decrease   in   the concentration of soft particles in test fuel after autoclave tests compared to initial test fuel. In conclusion, the test fuel prepared works as expected and thus can be scaled up for running the injector test rig. Additionally, test fuel containing calcium and sodium soft particles have a higher probability to form deposits. Deposits were indeed proven to be metal carboxylates as expected.
Strävan efter att minimera utsläppen inom fordonsindustrin fortsätter att ta fart. Kontinuerlig förbättring av motorkonstruktioner och utveckling av effektivare bränslesystem i dieselfordon är en lösning som bör applåderas. Ännu viktigare är den ökande övergången till användning av förnybara bränslen i förbränningsmotorer. Med länder som inför strängare utsläppsregler har marknaderna sett en ökad användning av biobränslen. Därefter varierar bränslekvaliteten från marknad till marknad. Blandning av olika bränslen förändrar bränslets egenskaper när lösligheten hos vissa föreningar minskar. Följaktligen har mjuka partiklar som fälls ut i processen kopplats till avlagringsbildning av interna dieselinjektoravlagringar (IDID). Detta projekt syftar till att undersöka IDID:s och möjliga förhållanden som förbättrar deras bildande i injektorn. En injektortestrigg som arbetar vid faktiska motortryck (>2000-bar) har konstruerats för detta ändamål. Testbränsle för användning i riggen bereds på Scania genom att mjuka partiklar förs in i B10- bränsle. Testriggens start utfördes genom kontroll av komponentens funktionalitet och trycktest. På grund av läckageproblem gjordes en omdesign av bränsleuppsamlingskoppen. En värdering av testbränslet genomfördes för att fastställa lämpligheten för deponeringsbildning i injektorn. Två screeningtester utfördes för att undersöka klibbig avlagringsbildning med hjälp av testbränslet. Autoklavtest utfördes vid en temperatur av 150 C under en period av upp till fyra dagar. Autoklavtest utfördes för att utvärdera bildandet av avlagringar med temperaturökning mellan 90 0C till 230 C. Analysen utfördes med hjälp av SEM-EDX, GC-MS och FTIR instrument. Testbränslet som förbereddes i Scania för replikering av avlagringar i injektorn gav positiva resultat. Klibbiga avlagringar som bildas under stekpannans test framgår av stretchiga och klibbiga rester på pannan. FTIR-analys visade att förekomsten av metallkarboxylat som är ett resultat av metalljonens mjuka partiklar. Autoklavtester visade bildandet av bruna avlagringar på fartyget. SEM-EDX-analysen av de bruna avlagringarna gav stora insikter om depositionens morfologi i motsats till strukturen hos mjuka partiklar som ursprungligen fanns i testbränslet. Mjuka partiklar är små och utsmetade med en regelbunden form medan avlagringarna är stora, oregelbundna, agglomererade och grova i konsistensen. Detta är viktigt för att förstå omvandlingsmekanismen för mjuka partiklar till avlagringar. En kombination av kalcium- och natriummjuka partiklar i testbränslet visade bättre förmåga att bilda avlagringar under autoklavtestet. GC-MS-analysen visade en enorm minskning av koncentrationen av mjuka partiklar i testbränsle efter autoklavtester jämfört med det ursprungliga testbränslet. Sammanfattningsvis fungerar testbränslet som förväntat och kan därför skalas upp för att driva injektortestriggen. Dessutom har testbränsle som innehåller mjuka kalcium- och natrium partiklar större sannolikhet att bilda avlagringar. Avlagringarna visade sig faktiskt vara metallkarboxylater som förväntat.
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7

Meng, Zhen Ph D. Massachusetts Institute of Technology. "Modeling of piston pin lubrication in internal combustion engines." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/129019.

Повний текст джерела
Анотація:
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2020
Cataloged from student-submitted PDF of thesis.
Includes bibliographical references (pages 120-121).
The piston pin joins the piston and the connecting rod to transfer the linear force on the piston to rotate the crankshaft that is the eventual power outlet of the engine. The interfaces between the piston pin and the pin bore as well as the connecting rod small end are one of the most heavily loaded tribo pairs in engines. Piston pin seizure still occurs often in the engine development and the solution often comes from applying expensive coatings. Furthermore, it has been found that the friction loss associated with the pin can be a significant contributor to the total engine mechanical loss. Yet, there lacks a basic understanding of the lubrication behavior of the pin interfaces. This work is aimed to develop a piston pin lubrication model with consideration of all the important mechanical processes. The model predicts the dynamics of the pin and the lubrication of the interfaces between the pin and pin bore as well as small end.
The model couples the dynamics of the pin with the structural deformation of the mating parts, the hydrodynamic and boundary lubrication of all the interfaces, and oil transport. The model is successfully implemented with an efficient and robust numerical solver with the second order accuracy to compute this highly stiff system. The preliminary results applying the model to a gasoline engine show that the boundary lubrication is the predominant contributor to the total friction. As a result, the interface with more asperity contact tends to hold the pin with it. Thus, the pin friction loss is coming from the interface with less contact. Solely from friction reduction point of view, ensuring efficient hydrodynamics lubrication in one interface is sufficient.
Furthermore, as the heavy load is supported in several small areas, mechanical and thermal deformation of all the parts are critical to load distribution, oil transport, and the generation of hydrodynamic and asperity contact pressure, providing the necessity of the elements integrated in the model. This work represents the first step to establishing a more comprehensive engineering model that helps the industry understand the pin lubrication and find cost-effective solutions to overcome the existing challenges.
by Zhen Meng.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Mechanical Engineering
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8

Boulanger, Yves. "A microprocessor system for internal combustion engine PV diagram analysis /." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61266.

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Анотація:
An internal combustion engine was instrumented in view of developing automatic diagnosis methods based on the analysis of PV diagrams.
The pressure signal is unstable over successive cycles. Consequently, pressure must be averaged over several consecutive cycles to produce valid data.
Due to instrumentation problems the data obtained was insufficient to allow the development of diagnostics. The investigation reported in this work is thus limited to the development of a microprocessor-based system for the acquisition of pressure-volume data on high speed, spark ignition internal combustion engines.
Several instrumentation problems were identified and solutions applied or proposed. The information presented here can form the basis for further research on the original project.
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9

Luo, Xi. "Study of Periodical Flow Heat Transfer in an Internal Combustion Engine." Thesis, Wayne State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10637206.

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In-cylinder heat transfer is one of the most critical physical behaviors which has a direct influence on engine out emission and thermal efficiency for IC engine. In-cylinder wall temperature has to be precisely controlled to achieve high efficiency and low emission. However, this cannot be done without knowing gas-to-wall heat flux. This study reports on the development of a technique suitable for engine in-cylinder surface temperature measurement, as the traditional method is “hard to reach.” A laser induced phosphorescence technique was used to study in-cylinder wall temperature effects on engine out unburned hydrocarbons during the engine transitional period (warm up). A linear correlation was found between the cylinder wall surface temperature and the unburned hydrocarbons at mediate and high charge densities. At low charge density, no clear correlation was observed because of miss-fire events. A new auto background correction infrared (IR) diagnostic was developed to measure the instantaneous in-cylinder surface temperature at 0.1 CAD resolution. A numerical mechanism was designed to suppress relatively low-frequency background noise and provide an accurate in-cylinder surface temperature measurements with an error of less than 1.4% inside the IC engine. In addition, a proposed optical coating reduced time delay errors by 50% compared to more conventional thermocouple techniques. A new cycle-averaged Res number was developed for an IC engine to capture the characteristics of engine flow. Comparison and scaling between different engine flow parameters are available by matching the averaged Res number. From experimental results, the engine flow motion was classified as intermittently turbulent, and it is different from the original fully developed turbulent assumption, which has previously been used in almost all engine simulations. The intermittent turbulence could have a great impact on engine heat transfer because of the transitional turbulence effect. Engine 3D CFD model further proves the existence of transitional turbulence flow. A new multi zone heat transfer model is proposed for IC engines only. The model includes pressure work effects and improved heat transfer prediction compared to the standard Law of the wall model.

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Van, Vuuren Christiaan Michael. "Modelling of internal combustion engine intake and exhaust processes." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52343.

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Thesis (MScEng)--University of Stellenbosch, 2001.
ENGLISH ABSTRACT: This thesis is concerned with unsteady, one-dimensional flow, which closely mimics those found in the manifolds of internal combustion engines. The physical equations describing problems of this nature are presented and some of the important concepts introduced. These equations and concepts were verified by comparison to published results. The Method of Characteristics (MaC) for unsteady one-dimensional flow with friction and heat transfer was used to analyse the gas flow through the inlet and exhaust systems of an engine. The theoretical derivation of unsteady gas dynamic boundary conditions is presented and the integration with the unsteady pipe flow explained. A simulation flow model was developed to analyse the flow by using the Mae. Thisflow model was then incorporated into an engine simulation program, ESA,to simulate internal combustion engines and to predict the performance of a specific engine. A cam-profile model and an in-cylinder thermodynamic model are used to complete the ESAsoftware. Experimental work was done on a modified Nissan Z24/NA20 engine to evaluate the simulation model. The manifolds of the Nissan Z24/NA20 were modified to isolate one of the cylinders for a proper single cylinder model. More experimental work was done on a Volkswagen 1.6£ 8-valve and a 1.6£ 20-valve engine to obtain performance data on two inlet manifolds developed using the ESAsoftware. Performance data and pressure traces in the inlet manifold of the Nissan Z24/NA20 were recorded for comparison with the ESA software. Good correspondence was found between tested and modelled data and the differences varied between ±5% on engine performance data and pressure wave frequency predictions, and ± 10% on pressure pulse amplitudes.
AFRIKAANSE OPSOMMING: Hierdie tesis handeloor bestendige, eendimensionele vloei, wat die gasvloei in spruitstukke van binnebrandenjins naboots. Die nodige vergelykings wat hierdie tipe probleme beskryf asook van die belangrikste konsepte, word bespreek. Hierdie vergelykings en konsepte is met behulp van gepubliseerde data geverifieer. Die Metode van Karakteristieke (MVK) vir bestendige, eendimensionle vloei met wrywing en warmte oordrag, is gebruik om die gasvloei deur inlaat en uitlaat sisteme van 'n enjin te analiseer. Die teoretiese afleiding van bestendige gasdinamiese randvoorwaardes asook hul integrasie met die bestendige pypvloei, word verduidelik. 'n Simulasie vloeimodel is ontwikkelom die vloei met behulp van die metode van karakteristieke te analiseer. Hierdie vloeimodel is deel van 'n omvattende enjinsimulasie program, ESA. Dit word gebruik om binnebrandenjins te simuleer en enjinwerkverrigting te voorspel. 'n Nokprofielmodel en 'n termodinamiese ontbrandingsmodel word gebruik om die enjinsimulasie program af te rond. Eksperimentele toetse op 'n gemodifiseerde Nissan Z24/NA20 enjin is gebruik om die simulasie model te evalueer. Die spruitstukke van die Nissan Z24/NA20 is aangepas om een van die silinders te isoleer om so 'n geskikte enkelsilindermodel te skep. Verdere eksperimentele toetse is gedoen op Volkswagen 1.6£8- klep en 1.6£ 20-klep enjins. Werkverrigtingsdata is verkry op twee nuwe inlaatspruitstukke wat met behulp van die ESAsagteware ontwerp is. Werkverrigtingsdata en drukverdelingsdata in die inlaatspruitstuk van die Nissan Z24/NA20is aangeteken om te vergelyk met die resultate van die ESAsagteware. Goeie ooreenstemming is verkry tussen toets- en gemoduleerde data. Die verskille varieer tussen ±5% op enjin werkverrigtingsdata en drukpulsfrekwensie voorspellings, en ± 10%op drukpuls-amplitudes.
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Книги з теми "Internal Combustion Engineering"

1

H, Weaving John, ed. Internal combustion engineering: Science & technology. London: Elsevier Applied Science, 1990.

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Weaving, John H. Internal Combustion Engineering: Science & Technology. Dordrecht: Springer Netherlands, 1990.

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Weaving, John H., ed. Internal Combustion Engineering: Science & Technology. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0749-2.

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4

Pulkrabek, Willard W. Engineering fundamentals of the internal combustion engine. 2nd ed. Upper Saddle River, N.J: Pearson Prentice Hall, 2004.

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5

Engineering fundamentals of the internal combustion engine. Upper Saddle River, N.J: Prentice Hall, 1997.

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6

Taylor, Charles Fayette. The internal-combustion engine in theory and practice. Cambridge, Mass: M.I.T. Press, 1985.

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7

Merker, Günter P. Combustion Engines Development: Mixture Formation, Combustion, Emissions and Simulation. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2012.

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8

Solutions manual, Engineering fundamentals of the internal combustion engine. Upper Saddle River, N.J: Prentice Hall, 1997.

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9

Council, Global Competitiveness, ed. Combustion research in Japan. Warrendale, PA: Society of Automotive Engineers, 1985.

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10

Belousov, E. V. Sozdanie i sovershenstvovanie tverdotoplivnykh porshnevykh dvigatelei vnutrennogo sgoranii Ła. Kherson: Izd-vo OAO "KhGT", 2006.

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Частини книг з теми "Internal Combustion Engineering"

1

Roth, Lawrence O., and Harry L. Field. "Internal Combustion Engines." In Introduction to Agricultural Engineering, 38–47. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3594-2_5.

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2

Klell, Manfred, Helmut Eichlseder, and Alexander Trattner. "Internal Combustion Engines." In Hydrogen in Automotive Engineering, 193–249. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-35061-1_7.

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3

Field, Harry L., and John M. Long. "Internal Combustion Engines." In Introduction to Agricultural Engineering Technology, 59–70. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-69679-9_5.

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4

Polak, T. A., and C. Pande. "Internal Combustion Engine Testing." In Engineering Measurements, 151–58. Chichester, UK: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118903148.ch10.

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5

Roth, Lawrence O., and Harry L. Field. "Internal Combustion Engines." In An Introduction to Agricultural Engineering: A Problem-Solving Approach, 38–47. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4684-1425-7_5.

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6

Galiullin, L. A., and R. A. Valiev. "Internal Combustion Engines Fault Diagnostics." In Lecture Notes in Electrical Engineering, 305–14. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39225-3_33.

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7

Huber, Jürgen, and Jürgen Heinrich. "Ceramics in Internal Combustion Engines." In 2nd European Symposium on Engineering Ceramics, 203–28. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1105-5_9.

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8

Peschka, W. "Hydrogen Cryofuel in Internal Combustion Engines." In Advances in Cryogenic Engineering, 35–44. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2522-6_4.

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9

Bradley, D. "Combustion in Gasoline Engines." In Internal Combustion Engineering: Science & Technology, 287–331. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0749-2_9.

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10

Overington, M. T. "Combustion in Spark-ignition Engines." In Internal Combustion Engineering: Science & Technology, 1–32. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0749-2_1.

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Тези доповідей конференцій з теми "Internal Combustion Engineering"

1

Mamut, E. "Microsystems for automotive engineering." In 2001 Internal Combustion Engines. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-24-0089.

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2

Khalil, Ahmed E. E., and Ashwani K. Gupta. "Internal Entrainment Effects on Distributed Combustion." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-48090.

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Colorless Distributed Combustion (CDC) has been shown to provide ultra-low emissions and enhanced combustion performance of high intensity gas turbine combustors in terms of efficiency and stability. To achieve distributed combustion, the flowfield needs to be carefully tailored for adequate mixing between reactants and hot reactive species from within the combustor to result in high temperature low oxygen concentration environment prior to ignition. Such distributed reactions result in uniform thermal field and also eliminates any hot spots for mitigating NOx emission. Though Distributed Combustion have been extensively studied using a variety of geometries, injection velocities, heat release intensities, and fuels, the role of hot reactive internally recirculated gases requires further examination. In this paper, the impact of internal entrainment of reactive gases on flame structure and behavior is investigated with focus on fostering distributed combustion and providing guidelines for designing high intensity combustors operating in distributed combustion mode. A mixture of nitrogen and carbon dioxide, used to simulate the recirculated gases, is introduced to the air stream prior to mixing with the fuel and subsequent combustion. Increase in the amounts of nitrogen and carbon dioxide (simulating increased entrainment), led to volume distributed reaction over a larger volume in the combustor with enhanced and uniform distribution of the OH* chemiluminescence intensity. At the same time, the bluish flame stabilized by the swirler is replaced with a more uniform almost invisible bluish flame. The increased recirculation also reflected on the pollutants emission, where NO emissions were significantly decreased for the same amount of fuel burned. Lowering oxygen concentration from 21% to 15% (due to increased entrainment) resulted in 80∼90% reduction in NO with no impact on CO emission with sub PPM NO emission achieved at an equivalence ratio of 0.7. The same trend was seen at higher diluents injection temperature as well, with significant pollutants emission reduction down to an oxygen concentration of 10%.
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3

Gheorghiu, Victor. "Ultra-Downsizing of Internal Combustion Engines." In 16th Asia Pacific Automotive Engineering Conference. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2011. http://dx.doi.org/10.4271/2011-28-0049.

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4

Na Liu and Guoxiang Li. "Application of CAE technology to internal combustion engine engineering." In 2010 IEEE 11th International Conference on Computer-Aided Industrial Design & Conceptual Design 1. IEEE, 2010. http://dx.doi.org/10.1109/caidcd.2010.5681922.

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5

Moriya, Shinji, Naotsugu Isshiki, and Susumu Kikuchi. "Regenerator Elements for Internal Combustion Stirling Engine." In 27th Intersociety Energy Conversion Engineering Conference (1992). 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1992. http://dx.doi.org/10.4271/929387.

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6

Feng, Yanpeng, Haijun Tang, Chunguang Li, Xiaoming Ma, and Mingli Xie. "Failure Analysis of Internal Combustion Exhaust Valve." In 2015 International conference on Applied Science and Engineering Innovation. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/asei-15.2015.47.

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7

Galiullin, Lenar A., and Asgat H. Sanakulov. "Simulation Model for Internal Combustion Engines Diagnostic." In 2018 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2018. http://dx.doi.org/10.1109/icieam.2018.8728706.

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8

Guo, YaRu, Yan Liu, Xiaopai Zhang, Xiaojuan Zhang, and Changbin Zhang. "Noise Distribution of the Internal Combustion Engine." In 2015 4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icmmcce-15.2015.9.

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9

Meza-Aguilar, Marco, Juan Diego Sanchez-Torres, Alexander Loukianov, Antonio Navarrete-Guzman, and Jorge Rivera. "Observer based controller for internal combustion engine." In 2013 10th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE). IEEE, 2013. http://dx.doi.org/10.1109/iceee.2013.6676067.

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10

Dvorak, Todd M., and Robert L. Hoekstra. "Optimizing Internal Combustion Engine Performance Through Response Surface Methodology." In Motorsports Engineering Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1996. http://dx.doi.org/10.4271/962525.

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Звіти організацій з теми "Internal Combustion Engineering"

1

Grauer and Chapman. L52330 Development of an Active Air Control System. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), March 2012. http://dx.doi.org/10.55274/r0010447.

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Develop an active air control system that, when installed on a turbocharged-engine system, will reduce NOX emissions below the levels of the system alone. While the turbocharged-engine system allows the natural gas compression industry to decrease pollutant emissions via increased air flow, the physics of the system and the environments in which these systems operate restrict further advancements. A new model, the Charge Air Integrated Manifold Engine Numerical Simulation (CAIMENS). The CAIMENS model was used to: Quantify the effects of charge air imbalance between cylinders in terms of NOX production; Illustrate that an imbalance in mass air flow creates a one-to-one imbalance in corrected trapped equivalence ratio Reveal a 5% to 12% imbalance in air flow present in the candidate Cooper GMV engine which correlated to a 65% to 92% imbalance in NOX production; and Provide detailed information that led to the specification of a mass air flow (MAF) sensor coupled with an air flow balancer (AFB), comprising the Active Air Control (AAC) system. The research team proceeded by working with the ERLE team to select cylinder liners for the NGML air flow bench, and then expanded the air flow bench from one cylinder to two cylinders. The specified AAC system was installed on each of the two cylinders. The research team then conducted a series of experiments to evaluate and fine tune the AAC system. The AAC system was able to correct up to a 12.4% air imbalance. The end point of the project was an AAC system that could, with some engineering effort, be applied to field engines. Benefit: The resulting technology was an active air flow control system consisting of an AFB integrated with a MAF sensor. The AFB has characteristics analogous to that of a throttle plate used in a carbureted internal combustion engine.
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