Relevant bibliographies by topics / Internal Combustion Engine - Piston

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Internal Combustion Engine - Piston'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 September 2023

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Journal articles on the topic "Internal Combustion Engine - Piston"

1

Adil, H., S. Gerguri, and J. Durodola. "Evolution of Materials for Internal Combustion Engines Pistons." International Journal of Research and Review 10, no. 8 (August 10, 2023): 203–14. http://dx.doi.org/10.52403/ijrr.20230827.

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Piston is one of the most important components in an internal combustion engine which transfers combustion energy to the crankshaft via a connecting rod. Increase in an engine’s efficiency has somehow necessitated improvement in the piston. This improvement can be achieved by better piston design or using material with superior mechanical properties. Engineers have experimented with different materials for pistons since the introduction of internal combustion engines. This paper reviews the evolution of materials for pistons since the beginning of automotive industry to present day and analyses the properties that attracted engineers to use these materials. The paper also focuses on newly developed materials that have the potentials to replace current piston materials and the work that is taking place. The current trend of changing from diesel to petrol in small internal combustion engines and the affect this will have on piston materials has been analysed. Keywords: Aluminium, Combustion Engine, Nanostructured, Piston Material, Piston.
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2

Aliemeke, B. N. G., and M. H. Oladeinde. "Design of 0.67hp gasoline generator pistons." Nigerian Journal of Technology 39, no. 3 (September 16, 2020): 839–43. http://dx.doi.org/10.4314/njt.v39i3.25.

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Piston is an important internal combustion engine component that works with other engine components to withstand severe stresses and high temperature that are generated in the combustion chambers. Pistons are subjected to a very high mechanical and thermal load which results from extreme pressure cycles and huge forces of inertia caused by extremely high acceleration during the reciprocating motion. The 0.67hp generator piston designed had the values of parameters to be: 51.00mm Piston stroke; 48.85mm piston bore diameter; 3.66kw brake power; 4.87kw indicated power; 11.63Nm engine torque; 3.22mm piston thickness and 9.44cm3 clearance volume. The piston parameter values calculated were found to be in accordance with the recommended range of values in the design and operating data for internal combustion engines. Keywords: Piston design, machine parameters and internal combustion engines.
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3

Katijan, A., and A. H. Kamardin. "The Effect of Compression Ratio by Different Piston Head Shape on the Performance of Motorcycle Engine." International Journal of Automotive and Mechanical Engineering 16, no. 3 (October 3, 2019): 6906–17. http://dx.doi.org/10.15282/ijame.16.3.2019.06.0518.

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The compression ratio has a significant impact on engine power, fuel economy, emission, and other performances of internal combustion engines. Basic engine theory states that a higher compression ratio produces higher torque and horsepower. One way of having different compression ratio is by changing piston head shape. A piston is a cylindrical engine component that slides back and forth in the cylinder bore via forces produced during the combustion process. The piston acts as a movable end of the combustion chamber transmitting power generated from the burning of fuel and air mixture in the combustion chamber. The objective of this study is to compare the engine performance in horsepower and torque produced by the different shapes of the piston head in an internal combustion engine. Three pistons with different head shapes - standard, mug (low compression) and dome (high compression) with a compression ratio of 8.8:1, 7.61:1 and 10.06:1 were selected for the study. An experiment was also performed to a standard piston installed with 1.5 mm gasket, which has a compression ratio of 7.31. The experiments were carried out using a standard internal combustion engine of a Honda EX5 motorcycle. The engine runs on a chassis dynamometer to measure its torque and horsepower. Piston performance was evaluated based on the maximum available torque and horsepower. The result shows that all three pistons produce different torque and horsepower. The domed piston head produces higher torque and horsepower followed by the standard and mug. By just changing the piston head shape, torque and horsepower increased up to 7.14% and 20.05% respectively.
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Mar'in, Dmitriy, Il'mas Salahutdinov, Denis Molochnikov, Rail' Mustyakimov, and Ilnar Gayaziev. "RESULTS OF MOTOR TESTS OF EXPERIMENTAL GASOLINE INTERNAL COMBUSTION ENGINE." Vestnik of Kazan State Agrarian University 14, no. 4 (April 12, 2020): 64–68. http://dx.doi.org/10.12737/2073-0462-2020-64-68.

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Current trends in the engine industry are aimed at improving the power and fuel-economic indicators of an internal combustion engine (ICE). This, in turn, is accompanied by an increase in the mechanical and thermal load on the details of the cylinder-piston group (CPG). One of the most loaded parts of the CPG is the piston. Overheating of the piston leads to premature wear of rubbing surfaces, occurrence of piston rings and their breakdowns, jamming of pistons, burnouts of the piston bottom, etc. Modern technology can protect engine parts subject to thermal stresses, especially pistons, by using structural coatings or special insulating materials. The main idea of such a coating is to reflect thermal energy back into the combustion chamber, which should prevent the piston from overheating. Thermal protective coatings are applied by plasma and detonation methods, however, such coatings are destroyed during operation and therefore they are not widely used to reduce the temperature level of the piston. To improve the thermal insulation properties of the piston, it is proposed to form a heat-insulating coating on the working surfaces of the piston head by microarc oxidation (MAO). A distinctive feature of MAO is the participation in the process of covering formation of surface microdischarges that have a very significant and specific effect on the forming covering, as a result of which the composition and structure of the resulting oxidized layers are significantly different, and the properties are significantly increased compared to conventional anode films. Comparative motor tests, the results of which showed that an engine equipped with pistons with a heat-insulating coating on the working surfaces of the head, increase power by 5.3% and reduce fuel consumption by 5.7%, compared with an engine equipped with standard pistons.
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Marchenko, Andriy, Volodymyr Shpakovskyy, and Volodymyr Volikov. "Cordunum pistons increase diesel engine economy and reliability." Acta Innovations, no. 33 (October 1, 2019): 28–37. http://dx.doi.org/10.32933/actainnovations.33.3.

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Taking into account the oil resources depletion the requirements to fuel consumption of internal combustion engines are now increasing as well as to their reliability and durability. With the continual increase in the number of internal combustion engines in operation, along with the problem of parts of the cylinder piston group wearing out has caused exhaust from such engines to be one of the main source of harmful pollutant emissions in cities. Therefore, environmental requirements have in turn increased dramatically. The engine resource and its efficiency largely depend on the process of fuel combustion in the combustion chamber. Experimental studies aimed to improve the working process on diesel engines by piston insulation have shown an effective decrease in fuel consumption by reducing heat loss and more complete fuel combustion. When oxide ceramic coatings were used on the piston and cylinder head, the maximum power increased and the specific fuel consumption decreased. However ceramic coatings are not widely used due to their peeling. We have developed a technology for the galvanic plasma treatment of pistons, which made it possible to obtain on the pistons surface made of aluminum alloys a ceramic corundum layer with high adhesion to the base metal that does not peel and has electret properties. In 1993, pistons with a corundum surface layer were installed in a shunting diesel locomotive and life-time running tests were conducted. Such pistons increased wear resistance, reduced the wear of cylinder liners, increased the strength of the annular jumpers, and were not prone to burnouts and scuffing. They provided an increase in the resource of the cylinder-piston group of the diesel engine by more than 125 thousand engine hours. The paper provides an analysis of the effect of corundum pistons thermal insulation on significant increasing the, engine power and fuel consumption reduction. Basing on experimental bench studies of a gasoline engine, a tractor diesel engine and long-term operational life tests of diesel engines, an attempt had been made to explain the reasons for the improvement in the engines’ efficiency.
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Maryin, Dmitry, Andrei Glushchenko, Anton Khokhlov, Evgeny Proshkin, and Rail Mustyakimov. "Results of engine tests of an experimental gasoline internal combustion engine." BIO Web of Conferences 17 (2020): 00078. http://dx.doi.org/10.1051/bioconf/20201700078.

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To improve the power and fuel and economic performance of a gasoline internal combustion engine, it has been proposed to improve the insulating properties of the piston by forming a heat-insulating coating on the working surfaces of the piston head with a thickness of 25...30 μm using the microarc oxidation method. Comparative results of engine tests are carried out, which showed that an engine equipped with pistons with a heat-insulating coating on the working surfaces of the head increases power by 5.3 % and reduces hourly fuel consumption by 5.7 % compared to an engine equipped with standard pistons.
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Sitdikov, V. M., N. Yu Dudareva, A. A. Ishemguzhin, and I. A. Dautov. "Emission control and reduction in the combustion chamber of an internal combustion engine." Trudy NAMI, no. 4 (January 3, 2023): 83–95. http://dx.doi.org/10.51187/0135-3152-2022-4-83-95.

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Introduction (problem statement and relevance). The task of emission control and reduction for internal combustion engines (ICE) is a relevant issue of the modern engine building. However, the catalytic converters potential is limited and almost exhausted. The paper authors study the possibility to partially reduce toxic emissions directly in the engine combustion chamber by means of the ceramic coating formed on the piston crown.The purpose of the paper is to study the influence of the coating formed by the method of microarc oxidation on the combustion chamber parts on the ICE exhaust toxicity.Methodology and research methods. The experimental method of research was applied. The research was carried out on the RMZ-551i engine. Engine tests were performed in various load modes: the rotation rate changed from 2000 to 6000 rpm, and the throttle opening amounted to 25, 50, 75 and 100% in each speed mode.Results. The paper presents experimental data proving the real possibility to decrease the ICE exhaust gas toxicity through formation of a ceramic coating on the piston crown. A relative decrease of carbon monoxide concentration in exhaust gases by 3.1% was noticed when using coatings on pistons compared to using standard pistons. Along with the decrease of CO amount, a relative increase of carbon dioxide (СО2) concentration by 2.1% is noticed.Practical significance. The provided experimental data obtained in the engine tests showed the possibility to partially reduce the amount of toxic components in exhaust gases directly in the combustion chamber by means of the coating on the piston crown formed by microarc oxidation method.
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Asoyan, Arthur R., Alexander S. Gorshkov, and Ani H. Israelyan. "Less wear on the piston skirts of internal combustion engines." RUDN Journal of Engineering Researches 21, no. 3 (December 15, 2020): 175–80. http://dx.doi.org/10.22363/2312-8143-2020-21-3-175-180.

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A significant proportion of mechanical losses in internal combustion engines accounted for mechanical losses in the cylinder-piston group. Depending on the operating modes of the internal combustion engine, contact interaction in the piston-cylinder pair is possible, which leads to wear of the working surfaces of the resource-determining elements and a decrease in the operational life of the power unit as a whole, in connection with which the reduction of friction losses in the internal combustion engine elements and the piston - cylinder liner coupling in particular is relevant. Both domestic and foreign researchers are engaged in the solution of the above described problems, various profiles of pistons, methods of calculating the parameters of the oil layer are proposed, but the practical state of the issue determines the relevance of research in this direction. The paper considers the possibility of reducing the wear of piston skirts by reducing the contact surface in conjugation and providing an oil film in the friction zone, regardless of engine operating conditions. This opportunity is realized by forming a certain macro profile on the working surface of the piston skirt. The formation of the macrorelief was carried out by means of surface plastic deformation, with the reciprocating movement of a spherical tool on the machined surface.
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Kazimierski, Zbyszko, and Jerzy Wojewoda. "Double internal combustion piston engine." Applied Energy 88, no. 5 (May 2011): 1983–85. http://dx.doi.org/10.1016/j.apenergy.2010.10.042.

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Gots, A. N., and S. A. Glinkin. "Loading conditions of pistons of internal combustion engines and causes of crack formation on combustion chamber edge." Traktory i sel hozmashiny 83, no. 10 (October 15, 2016): 25–29. http://dx.doi.org/10.17816/0321-4443-66208.

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In order to develop the methods for assessment of durability of pistons of tractor diesel engines, it is necessary to conduct the research of causes of failures in their operation, in particular crack formation on the edge of combustion chamber. Tractor engines operate in transient regimes due to periodic changes of control organ position and resisting moment when tractor performs agricultural, logging and other works. In transient regimes, the stress-strain state of piston varies in time, which leads to the formation of fatigue cracks on the edge of combustion chamber. The paper reviews the studies on regularities of change in the rate of propagation of fatigue cracks on the edge of combustion chamber of tractor diesel engine. The peak values of heat flows passing through the heat-absorbing surface of piston head in transient regimes exceed by 2.5 times the same values in steady-state regimes. According to the researches, for the 4ChN 11/12.5 tractor diesel engine stress intensity on the edge of combustion chamber caused by temperature gradients equals to 92-98 MPa, and exceeds more than by 2 times the stresses caused by gas pressure forces in cylinder (38-42 MPa). With the increase of engine forcing, the edge of combustion chamber becomes a local concentrator of thermal stresses, that leads to elastic-plastic deformations of cyclical pattern and microdefects. Stresses appearing on the edge of combustion chamber under rapid change of loading modes typically exceed the values of yield stress of piston material. This leads to the appearance of plastic deformations on the edge of combustion chamber. The analysis of causes of crack formation on the edge of combustion chamber of piston of a tractor diesel engine shows that when assessing the durability of piston, the whole range of indicators and parameters of the engine should be taken into account.
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Dissertations / Theses on the topic "Internal Combustion Engine - Piston"

1

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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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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2

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.

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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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Nandkumar, Subhash. "Two-stroke linear engine." Morgantown, W. Va. : [West Virginia University Libraries], 1998. http://etd.wvu.edu/templates/showETD.cfm?recnum=153.

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Thesis (M.S.)--West Virginia University, 1998.
Title from document title page. Document formatted into pages; contains x, 82 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 69-70).
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4

Vaish, Sarthak. "A study of the friction (piston-liner interaction) in internal combustion engines using a Floating Liner Engine." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/108920.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 88-91).
With the increasing interest in decreasing the environmental impact from internal combustion engines as well as increasing the fuel efficiency has led to deeper investigation into the components of the engine. The mechanical friction in an engine is a major concern, any improvements or reductions in friction can have large implication on the' efficiency of the engines. This thesis focuses on the piston/ ring pack assembly and its contribution to friction. It investigates several key components and trends in friction for the piston/ ring pack assembly, specifically the trends related to the oil control ring and the liner surface. The Floating Liner Engine is used in this study to isolate results from different components. The data collected can be used for comparative analysis and to identify trends in the friction trace. The thesis starts with describing the Floating Liner Engine system at MIT in detail. Both the data collection and the hardware systems are described as well as the test capabilities of the Floating Liner Engine. The results used in the thesis have been collected using the motoring condition. The oil control ring plays a key role in controlling the supply of oil to the top two rings and hence has a higher tension that the top two rings. This leads to the oil control ring having a significant contribution to the total friction of the system. The two most prevalent oil control rings used in the industry are the twin land oil control ring (TLOCR) and the three piece oil control ring (TPOCR). The thesis investigates the effect of changing liner roughness on the friction of the TLOCR. A comparison between the TLOCR and the TPOCR is also performed using the same liner surfaces. The results from these studies show a marked difference between the friction traces from the two oil control rings.
by Sarthak Vaish.
S.M.
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5

Howell-Smith, S. J. "Tribological optimisation of the internal combustion engine piston to bore conjunction through surface modification." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8449.

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Internal combustion (IC) engines used in road transport applications employ pistons to convert gas pressure into mechanical work. Frictional losses abound within IC engines, where only 38- 51% of available fuel energy results in useful mechanical work. Piston-bore and ring-bore conjunctions are fairly equally responsible for circa 30% of all engine friction - equivalent to 1.6% of the input fuel each. Therefore, reduction in piston assembly friction would have a direct impact on specific performance and / or fuel consumption. In motorsport, power outputs and duty cycles greatly exceed road applications. Consequently, these engines have a shorter useful life and a high premium is placed on measures which would increase the output power without further reducing engine life. Reduction of friction offers such an opportunity, which may be achieved by improved tribological design in terms of reduced contact area or enhanced lubrication or both. However, the developments in the motorsport sector are typically reactive due to a lack of relative performance or an ad-hoc reliance, based upon a limited number of actual engine tests in order to determine if any improvement can be achieved as the result of some predetermined action. A representative scientific model generally does not exist and as such, investigated parameters are often driven by the supply chain with the promise of improvement. In cylinder investigations are usually limited to bore surface finish, bore and piston geometrical form, piston skirt coatings and the lubricant employed. Of these investigated areas newly emerging surface coatings are arguably seen as predominate. This thesis highlights a scientific approach which has been developed to optimise piston-bore performance. Pre-existing methods of screening and benchmarking alterations have been retained such as engine testing. However, this has been placed in the context of validation of scientifically driven development. A multi-physics numerical model is developed, which combines piston inertial dynamics, as well as thermo-structural strains within a thermoelastohydrodynamic tribological framework. Experimental tests were performed to validate the findings of numerical models. These tests include film thickness measurement and incylinder friction measurement, as well as the numerically-indicated beneficial surface modifications. Experimental testing was performed on an in-house motored engine at Capricorn Automotive, a dynamometer mounted single-cylinder 'fired' engine at Loughborough University, as well as on other engines belonging to third party clients of Capricorn. The diversity of tests was to ascertain the generic nature of any findings. The multi-physics multi-scale combined numerical-experimental investigation is the main contribution of this thesis to knowledge. One major finding of the thesis is the significant role that bulk thermo-structural deformation makes on the contact conformity of piston skirt to cylinder liner contact, thus advising piston skirt design. Another key finding is the beneficial role of textured surfaces in the retention of reservoirs of lubricant, thus reducing friction.
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6

Battistini, Davide. "Soluzioni per il futuro dei motori a combustione interna: opposed piston engine e split cycle combustion engine." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/22080/.

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In questo lavoro di tesi mi soffermerò, inizialmente, sul possibile futuro dei motori a combustione interna e sulle tecnologie innovative già presenti sul mercato (HCCI, VCR, ecc.). Mi concentrerò, poi, sull’analisi di due sistemi innovativi come gli Opposed Piston Engine (OPE) e gli Split Cycle Combustion Engine (SCCE).
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7

Cho, Yeunwoo 1973. "Modeling engine oil vaporization and transport of the oil vapor in the piston ring pack on internal combustion engines." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/30302.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.
Page 172 blank.
Includes bibliographical references (p. 129-130).
A model was developed to study engine oil vaporization and oil vapor transport in the piston ring pack of internal combustion engines. With the assumption that the multi-grade oil can be modeled as a compound of several distinct paraffin hydrocarbons, a set of equations governing the oil vapor density variations were derived by applying the mass conservation law to the amount of oil vaporized from the piston and the amount of oil vapor transported within the piston ring pack. The model was applied to a heavy-duty diesel engine. First, the case with the maximum oil supply to all the piston regions was studied and the results showed that, under this condition, the oil consumption from vaporization alone was far greater than the typical oil consumption value measured in the engine. Then, to show the contribution of oil vaporization to oil consumption and the dependence of vaporization on oil supply to different regions, different lubrication conditions for the high temperature regions of the piston were studied. Finally, a liquid oil transport model was integrated with this oil vaporization model in order to investigate the change of oil composition on the crown land with each engine cycle and the contribution of liquid-phase oil and vapor-phase oil to the total oil consumption under a fixed liquid oil supply rate to the crown land.
by Yeunwoo Cho.
S.M.
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8

Smedley, Grant 1978. "Piston ring design for reduced friction in modern internal combustion engines." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/27129.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.
Includes bibliographical references (p. 113-115).
Piston ring friction losses account for approximately 20% of the total mechanical losses in modern internal combustion engines. A reduction in piston ring friction would therefore result in higher efficiency, lower fuel consumption and reduced emissions. The goal of this study was to develop low-friction piston ring designs to improve engine efficiency, without adversely affecting oil consumption, blowby, wear, or cost. These are desirable objectives for today's engine manufacturers as they strive to improve engine performance while trying to meet increasingly stringent emissions regulations. Using an existing piston ring friction and lubrication model, the main contributors to friction in modern internal combustion engines were identified as the top ring around top dead center of the compression/expansion strokes and the oil control ring throughout the engine cycle. Model predictions indicated that the top ring friction could be reduced by implementing a skewed barrel profile design or an upward piston groove tilt design, and oil control ring friction could be reduced by decreasing ring tension. An increase in groove wear was predicted to occur with the upward piston groove tilt design, which could be eliminated by the introduction of a positive static twist on the top ring. An increase in oil consumption was predicted to occur with the low-tension oil control ring design, which could be mitigated either by the introduction of a negative static twist on the second ring, or by the implementation of the skewed barrel top ring design. Model predictions indicated that by combining the low-friction designs, a reduction in piston ring pack friction of 30-35% could be achieved, without an increase in blowby, wear, or oil consumption.
(cont.) Experimental results conducted on a full-scale natural gas power generation engine supported the model predictions for the low-tension oil control ring design. The predicted reduction in piston ring friction would translate to a 0.5-1% increase in brake thermal efficiency, which would result in a significant improvement in fuel economy and a substantial reduction in emissions over the life of the engine.
by Grant Smedley.
S.M.
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9

Aran, Gokhan. "Aerothermodynamic Analysis And Design Of A Rolling Piston Engine." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608449/index.pdf.

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A rolling piston engine, operating according to a novel thermodynamic cycle is designed. Thermodynamic and structural analysis of this novel engine is carried out and thermodynamic and structural variables of the engine were calculated. The losses in the engine, friction and leakage were calculated and their effects on the engine were demonstrated.
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10

Bhouri, Mohamed Aziz. "Curved beam based model for piston-ring designs in internal combustion engines." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/111772.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 169-173).
Characterizing the piston ring behavior is inherently associated with the oil consumption, friction, wear and blow-by in internal combustion engines. This behavior varies along the ring's circumference and determining these variations is of utmost importance for developing ring-packs achieving desired performances in terms of sealing and conformability. This study based on straight beam model was already developed but does not consider the lubrication sub-models, the tip gap effects and the characterization of the ring free shape based on any final closed shape. In this work, three numerical curved beam based models were developed to study the performance of the piston ring-pack. The conformability model was developed to characterize the behavior of the ring within the engine. In this model, the curved beam model is adopted with considering ring-bore and ring-groove interactions. This interactions include asperity and lubrication forces. Besides, gas forces are included to the model along with the inertia and initial ring tangential load. In this model we also allow for bore, groove upper and lower flanks thermal distortion. We also take into account the thermal expansion effect of the ring and the temperature gradient from inner diameter (ID) to outer diameter (OD) effects. The piston secondary motion and the variation of oil viscosity on the liner with its temperature in addition to the existence of fuel and the different hydrodynamic cases (Partially and fully flooded cases) are considered as well. This model revealed the ring position relative to the groove depending on the friction, inertia and gas pressures. It also characterizes the effect of non-uniform oil distribution on the liner and groove flanks. Finally, the ring gap position within a distorted bore also reveals the sealing performance of the ring. Using the curved beam model we also developed a module determining the twist calculation under fix ID or OD constraint. The static twist is an experimental characterization of the ring during which the user taps on the ring till there is a minimum clearance between the ring lowest point and the lower plate all over the ring's circumference but without any force contact. Our last model includes four sub-models that relate the ring free shape, its final shape when subjected to a constant radial pressure (this final shape is called ovality) and the force distribution in circular bore. Knowing one of these distribution, this model determines the other two. This tool is useful in the sense that the characterization of the ring is carried out by measuring its ovality which is more accurate than measuring its free shape or force distribution in circular bore. Thus, having a model that takes the ovality as an input is more convenient and useful based on the experiments carried out to characterize the ring.
by Mohamed Aziz Bhouri.
S.M.
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Books on the topic "Internal Combustion Engine - Piston"

1

Rohrle, Manfred D. Pistons for internal combustion engines: Fundamentals of piston technology. Landsberg: Verlag Moderne Industrie, 1995.

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Oppenheim, Antoni K. Combustion in Piston Engines: Technology, Evolution, Diagnosis and Control. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004.

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Val'eho, Mal'donado, Andrey Krasnokutskiy, Nikolay Chaynov, Nikolay Patrahal'cev, and Yuriy Trifonov. Design and calculation of the piston engine crankshaft. ru: INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1863129.

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The textbook describes the design features and balancing of crankshafts of piston engines of various types and purposes. The calculation of the strength of the crankshaft is considered, including traditional methods, as well as a modern approach to assessing the stress-strain state of the shaft using the finite element method. The possibility of using finite element models in determining the values of stress concentration coefficients in the elements of the crankshaft is shown. Examples of calculations of the crankshaft for strength are given. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students of higher educational institutions studying in the specialty "Internal combustion engines" of the direction "Power engineering".
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Horler, Greg. The design and use of a digital radio telemetry system for measuring internal combustion engine piston parameters. Leicester: De Montfort University, 1999.

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GmbH, MAHLE International. Pistons and Engine Testing. Springer Vieweg. in Springer Fachmedien Wiesbaden GmbH, 2016.

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GmbH, MAHLE International. Pistons and engine testing. Springer Vieweg, 2018.

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GmbH, MAHLE International. Pistons and engine testing. Springer, 2016.

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Group, Research. The 2000 World Market Forecasts for Imported Internal Combustion Piston Engine Parts. Icon Group International, 2000.

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Inc, ICON Group International. 2000 Import and Export Market for Internal Combustion Piston Engine Parts in Austria. Icon Group International, 2001.

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Inc, ICON Group International. 2000 Import and Export Market for Internal Combustion Piston Engine Parts in Canada. Icon Group International, 2001.

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Book chapters on the topic "Internal Combustion Engine - Piston"

1

Bonneau, Dominique, Aurelian Fatu, and Dominique Souchet. "The Connecting Rod-Piston Link." In Internal Combustion Engine Bearings Lubrication in Hydrodynamic Bearings, 123–59. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781119005025.ch3.

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Bonneau, Dominique, Aurelian Fatu, and Dominique Souchet. "Kinematics and Dynamics of Crank Shaft-Connecting Rod-Piston Linkage." In Internal Combustion Engine Bearings Lubrication in Hydrodynamic Bearings, 1–30. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781119005025.ch1.

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Plotnikov, L. V., and Yu M. Brodov. "Processes Dynamic Characteristics in the Intake System of Piston Internal Combustion Engine." In Proceedings of the 4th International Conference on Industrial Engineering, 13–21. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95630-5_2.

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Sroka, Zbigniew J., and Kacper M. Kot. "The Impact of Piston Design on Thermal Load of Internal Combustion Engine." In Lecture Notes in Mechanical Engineering, 720–27. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-04975-1_83.

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Amith, S. C., R. Prakash, D. Arun, and S. Cyril Joseph Daniel. "A CFD Cold Flow Analysis of Different Piston Configurations for Internal Combustion Engine." In Recent Advances in Energy Technologies, 483–93. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3467-4_31.

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Niezgoda, Tadeusz, Zdzisław Kurowski, and Jerzy Małachowski. "Numerical Modelling and Simulation of an Internal Combustion Engine Piston with a Surface Coating." In Computational Methods in Engineering & Science, 205. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-48260-4_51.

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Kumar, Alli Anil, and Kotha Madhu Murthy. "Development of Engine Models and Analysis of Cylinder Bore Piston Stresses and Temperature Effects in Internal Combustion Engine." In Energy, Environment, and Sustainability, 7–26. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-8618-4_2.

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Bibu, B., and Vikas Rajan. "Numerical Simulation of Cold Flow Analysis of Internal Combustion Engine with Double-Lobed Piston Head." In Lecture Notes in Mechanical Engineering, 657–68. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6416-7_61.

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Winke, Florian. "Internal Combustion Engine." In Transient Effects in Simulations of Hybrid Electric Drivetrains, 63–96. Wiesbaden: Springer Fachmedien Wiesbaden, 2018. http://dx.doi.org/10.1007/978-3-658-22554-4_3.

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Jacobs, Timothy J. "Internal Combustion Engines internal combustion engine , Developments internal combustion engine developments in." In Encyclopedia of Sustainability Science and Technology, 5499–547. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0851-3_430.

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Conference papers on the topic "Internal Combustion Engine - Piston"

1

Duyar, Mustafa. "Mass Conserving Elastohydrodynamic Piston Lubrication Model With Incorporated Crown Lands." In ASME 2007 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/icef2007-1710.

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This paper describes a comprehensive model of Elastohydrodynamic piston lubrication, incorporated the crown lands into solution domain to characterize the effect of crown-liner interactions on piston motion. Elastohydrodynamic Lubrication (EHL) analysis of a piston skirt-liner conjunction is in general a useful methodology for design analysis of pistons. The diameters of piston crown lands are much less than those of skirt and liner for typical piston designs. Therefore crown lands normally do not interact with liner under usual operating conditions and hence most of the researchers exclude crown lands from the EHL analysis and mainly focus on piston skirt. However, under some of the engine operating conditions piston crown lands play important role in the secondary dynamics and tribology aspects of pistons. During the thermodynamic cycle when piston is hot and cylinder liner is relatively colder, piston thermal expansion leads to crown-liner interaction, which necessitates EHL, asperity contact and wear considerations of piston crown along with piston skirt. The simulation methodology for piston EHL analysis uses a mass-conserving algorithm for the finite volume method solution of Reynolds equation, which is coupled to elasticity relations and Greenwood-Tripp asperity contact model. Elrod’s mass conserving algorithm enables to model and analyze partially lubricated piston-liner interface by the input of oil supply and moreover rigorously handles cavitated zones, and takes into account piston ring grooves, piston cut-outs and unlubricated areas due to piston geometry. Results are presented from parametric studies that show comparisons between the analyses of the models with piston skirt lubrication only and piston lubrication, which incorporates the crown lands to the EHL domain.
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Chen, Yu, and Shashank Moghe. "Heavy Duty Engine Piston Cooling Gallery Oil Filling Ratio Measurement and Comparison of Results With Simulation." In ASME 2018 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icef2018-9582.

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Pistons for heavy duty diesel applications endure high thermal loads and therefore result in reduced durability. Pistons for such heavy duty applications are generally designed with an internal oil gallery — called the piston cooling gallery (PCG) — where the intent is to reduce the piston crown temperatures through forced convection cooling and thereby ensure the durability of the piston. One of the key factors influencing the efficiency of such a heat-transfer process is the volume fraction of oil inside the piston cooling gallery — defined as the filling ratio (FR) — during engine operation. As a part of this study, a motoring engine measurement system was developed to measure the piston filling ratio of an inline-6 production heavy duty engine. In this system, multiple high precision pressure sensors were applied to the piston cooling gallery and a linkage was designed and fabricated to transfer the piston cooling gallery oil pressure signal out of the motoring engine. This pressure information was then correlated with the oil filling ratio through a series of calibration runs with known oil quantity in the piston cooling gallery. This proposed method can be used to measure the piston cooling gallery oil filling ratio for heavy duty engine pistons. A preliminary transient Computational Fluid Dynamics (CFD) analysis was performed to identify the filling ratio and transient pressures at the corresponding transducer locations in the piston cooling gallery for one of the motoring test operating speeds (1200 RPM). A mesh dependency study was performed for the CFD analysis and the results were compared against those from the motoring test.
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Schreer, Kai, Ingo Roth, Simon Schneider, and Holger Ehnis. "Analysis of Aluminum and Steel Pistons: Comparison of Friction, Piston Temperature, and Combustion." In ASME 2013 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icef2013-19114.

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While steel pistons have been in use for a long time in commercial vehicle diesel engines, the first series production applications for passenger car diesel engines are currently imminent. The main reason for the use of steel pistons in high speed diesel engines is not, as maybe initially hypothesized, the increasing requirements on the component strength due to increasing mechanical loads, but rather challenges based on the actual CO2-legislation. The increasing requirements to reduce the fuel consumption necessitate new innovative technologies. The imminent penalties for exceeding the prescribed CO2 emissions seem to make the steel piston a viable alternative today, despite its higher manufacturing costs. So far, the CO2-benefits using steel pistons were mainly ascribed to the reduced friction between piston and cylinder liner due to no thermal interference. Fuel consumption measurements at vehicle manufacturer and research institutes hypothesize also an influence of the steel piston on the thermodynamic efficiency. MAHLE uses engine tests to investigate one piston variant made of aluminum (series production piston with cooled ring carrier) and one of steel (MAHLE TopWeld) in a detailed system comparison. Using a fully indicated engine, a combustion process analysis is performed and used as the basis for a loss analysis. The engine set-up parameters can be adjusted fully variable using a flexible ECU. The effect that the piston variant has on the combustion process is captured and balanced, e.g., by adjusting the parameters to obtain identical emissions. The analysis records the potential of the variants for each engine operating map area. The thermal conditions for the piston and the piston wall temperature on the combustion chamber side are varied over a wide range using a conditioning device for piston cooling. The influence of this intervention on the thermal load of the piston and the combustion and also the influence of different combustion mappings is measured directly by telemetric piston temperature measurement. MAHLE recently completed a system comparison [3] between aluminum and steel pistons with detailed measurements on a fully indicated engine, covering friction and temperature behavior as well as influences on combustion.
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Zhao, Zhenfeng, Fujun Zhang, Ying Huang, Zhenyu Zhang, and Dan Wu. "Study of Performance Characteristics of Opposed-Piston Folded-Cranktrain Engines." In ASME 2013 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icef2013-19198.

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This paper discusses a prototype of horizontally opposed-piston folded-cranktrain two-stroke diesel engine with combined supercharger and high-pressure common rail fuel system by Beijing Institute of Technology. The cranktrain dynamics, the thermodynamics (include the combustion process and the scavenging) are investigated, which is the main difference between this type of engine and conventional engines. The aim of the work is to design and develop a prototype of opposed-piston folded-cranktrain engine. The investigated results showed that maximum speeds of two pistons are all 13.99m/s, while the mean velocity is 9.4 m/s; the maximum acceleration on negative side is 3765 m/s2 when the piston is near the BDC and the maximum acceleration on positive side is 2944 m/s2 when the pistons is near the TDC; scavenging efficiency can get to 89% and the final air utilization is 55%. The prototype of opposed-piston folded-cranktrain engine has been developed.
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Bade, Mehar, Nigel N. Clark, Terence Musho, and Parviz Famouri. "Piston Rings Friction Comparison in a Free Piston and Conventional Crankshaft Engines." In ASME 2018 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icef2018-9774.

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The conventional internal combustion engines driven by crankshafts and connecting rod mechanisms are restrained by combustion, thermal and mechanical inefficiencies. The Oscillating Free Piston Linear Engine Alternator (OFPLEA) produces electric power with no need to modify the reciprocating motion to rotary motion. In the most common geometry it consists of a linear alternator driven cyclically by one or two internal combustion engines. With the elimination of crankshaft mechanism linkages, the free piston engine offers potential benefits over crankshaft engines in terms of total mechanical losses. A significant proportion of 5% to 12% of total fuel energy in conventional engines is consumed to overcome the frictional losses. This research investigation addresses an analytical and numerical model to simulate the tribological performance of piston rings in an OFPLEA engine. The results are then compared with results from an equivalent conventional crankshaft driven engine. This axisymmetric, mixed lubrication tribological model is developed on the hydrodynamic process defined by Patir and Cheng’s modified Reynolds equation and an asperity contact process as defined by Greenwood and Tripp’s rough surface dry contact model. The asperity contact pressure distribution, hydrodynamic pressure distribution, lubricant oil film thickness, frictional force and frictional power losses are calculated using an explicit finite difference approach. In the absence of spring-dominated OFPLEA system, dissimilarity in the piston motion profile for compression and power stroke exhibited two different oil film thickness peaks. Whereas a similar oil film thickness peaks are observed for conventional engine due to the controlled and stable operation maintained by crankshaft mechanism. The simulation results state that the frictional losses due to piston ring - cylinder liner contact are found to be lower for a free piston engine than for those of a corresponding crankshaft engine. The simulated piston ring frictional power losses are found to be 342.8 W for the OFPLEA system and 382.6 W for the crankshaft engine. Further, an overall system efficiency improvement of 0.6 % is observed for an OFPLEA engine due to these reduced frictional losses from piston rings.
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Goyal, Sandeep Kumar, and Avinash Kumar Agarwal. "Experimental and Numerical Investigations of Jet Impingement Cooling of Flat Plate for Controlling the Non-Tail Pipe Emissions From Heavy Duty Diesel Engines." In ASME 2006 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ices2006-1434.

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The continuous increase in power density has led to higher thermal loading of pistons of heavy duty diesel engines. Material constraints restrict the maximum operating temperature of a piston. High piston temperature rise may lead to engine seizure because of piston warping. To avoid this, pistons are usually cooled by oil jet impingement from the underside of the piston in heavy duty diesel engines. Impingement heat transfer has been used extensively because of the high rates of cooling it provides. The associated high heat transfer rate is due to the oil jet that impacts hot impingement surface at high speed. However, if the temperature at the underside of the piston, where the oil jet strikes the piston, is above the boiling point of the oil, it may contribute to the mist generation. This mist significantly contributes to non tail-pipe emission (non-point source) in the form of unburnt hydrocarbons (UBHC’s). This paper presents and discusses the results of a numerical and experimental investigation of the heat transfer between a constant heat flux flat plate and an impinging oil jet. Piston boundary conditions are applied to the flat plate. Using the numerical modeling, heat transfer coefficient (h) at the underside of the piston is calculated. This predicted value of heat transfer coefficient significantly helps in selecting right oil grade, oil jet velocity, nozzle diameter and distance of the nozzle from the underside of the piston. It also helps to predict whether the selected grade of oil will contribute to mist generation. Using numerical simulation (finite element method) temperature profiles are evaluated by varying heat flux. Infrared camera is used to investigate and validate the temperature profile of the flat plate. High speed camera is used to capture the mist generation and oil jet breakup due to impinging jet.
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Panayi, Andreas P., and Harold J. Schock. "Piston Finite Element Modeling for the Estimation of Hydrodynamic and Contact Forces and Moments." In ASME 2006 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/icef2006-1587.

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Modeling the thermal and mechanical behavior of a piston is crucial, as it allows for the evaluation of piston performance including piston dynamics and friction. These characteristics directly affect the efficiency, reliability, and lifespan of an internal combustion engine. This work migrates from the conventional parameterized piston modeling approach and uses a full CAD finite element modeling simulation for the evaluation of the piston’s thermal and mechanical behavior as well as the resultant hydrodynamic and contact forces and moments experienced by it. The analysis is performed for two different piston to cylinder bore nominal clearances, and for one of them at two different engine speeds, while assuming the piston is moving at the center of the cylinder bore with no transverse or tilting motion.
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8

Fieseler, Kelsey, Timothy J. Jacobs, and Mark Patterson. "Kinematics of an Articulated Connecting Rod and its Effect on Simulated Compression Pressures and Port Timings." In ASME 2017 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icef2017-3670.

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This study discusses the motion of the articulated connecting rod of an integral-engine compressor and the effect of the kinematics on in-cylinder pressure and port timings. A piston position modeling technique based on kinematics and engine geometry is proposed in order to improve the accuracy of simulated in-cylinder compression pressures. Many integral-engine compressors operate with an articulated connecting rod. For this type of engine-driven compressor, two power pistons share a crank throw with the compressor. The hinge pins that attach the power piston connecting rods to the crank are offset, causing the piston locations for each cylinder to be out of phase with each other. This causes top dead center to occur at different crank angles, alters the geometric compression ratio, and also changes the port timings for each cylinder. In this study, the equations of motion for the pistons of the four possible compressor/piston configurations of a Cooper-Bessemer GMW are developed. With the piston profiles, the intake and exhaust port timings were determined and compared to those of a slider-crank mechanism. The piston profile was then inputted into GT-POWER, an engine modeling software developed by Gamma Technologies, in order to obtain an accurate simulation match to the experimental in-cylinder pressure data collected from a Cooper-Bessemer GMWH-10C. Assuming the piston motion of an engine with an articulated connecting rod is similar to a slider-crank mechanism can create a difference in port timings. The hinge pin offset creates asymmetrical motion about 180°aTDC, causing the port timings to also be asymmetrical about this location. The largest differences are shown in the intake port opening of about 10° and a difference in exhaust port opening of about 7° when comparing the motion of the correct configuration to the motion of a slider-crank mechanism. It is shown that properly calculating the piston motion profiles according to the crank articulation and engine geometry provides a good method of simulating in-cylinder pressure data during the compression stroke.
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Wang, Yi, Limin Wu, Shuo Liu, Mei Li, Xianghui Meng, and Yi Cui. "Numerical Study on Fretting Wear of Mating Surface Between Piston Crown and Skirt in Heavy Duty Diesel Engine." In ASME 2018 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icef2018-9621.

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Composite pistons are often used in heavy duty diesel engines due to its good reliability and durability. Owing to the alternating loads, fretting wear usually happens on the mating surfaces between piston crown and skirt. In this paper, a fretting wear finite element model is developed to analyze the mating surface wear of composite piston of heavy duty diesel engine. The fretting wear model predicts the wear depth evolution for each working cycle based on Archard model and mesh updating technique, which is validated by previous pin and disk contact experiments. The wear evolution of the top contact surface of piston skirt is simulated according to engine operating condition, and fretting wear life is estimated by the decreasing process of crown-skirt connecting bolt preload. Effects of the shape of piston skirt top surface is also evaluated. In the end, the rationality of fretting wear model is validated by durability tests of diesel engine.
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10

Agarwal, Avinash Kumar, and Atul Dhar. "Experimental Investigations of Engine Durability and Lubricating Oil Properties of Jatropha Oil Blends Fuelled DI Diesel Engine." In ASME 2009 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/icef2009-14116.

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Current demand of transport fuel requires exploring every possible plant resource of engine fuel which can deliver satisfactory performance, emission, combustion and engine durability. Blending smaller quantity of Jatropha oil with mineral diesel is one of the simplest alternatives which can be put into application from technical and availability perspective. High viscosity of Jatropha oil (vegetable oil) comes into acceptable range upon blending with mineral diesel upto 20% (v/v). After ensuring satisfactory performance, emission and combustion characteristics, engines were subjected to long-term endurance test of 512 hour for comparing long-term performance of J5 and J10 blends vis-a`-vis mineral diesel, in the present experimental investigation. In the long-term endurance test, the effect of use of Jatropha oil blends on wear of various engine parts and lubricating vis-a`-vis mineral diesel were evaluated. The deposits on the vital engine parts were found to be slightly higher on J10 fuelled engine while it was comparable to mineral diesel for J5 fuelled engine. The piston rating carried out on the pistons of the three engines reflected that the J5 fuelled engines demonstrated reasonable long-term performance in comparison to mineral diesel fuelled engine while performance of J10 fuelled engine was slightly inferior. J5 and J10 fuelled engine’s lubricating oil shows higher reduction in lubricating oil viscosity and flash point compared to mineral diesel, thus indicating possibly higher fuel dilution. Fe, Pb, Cr, Zn wear metal debris in the lubricating oil are lower for J5 and J10 compared to mineral diesel engine’s lubricating oil however Al content in the lubricating oil is slightly higher for J5 and J10 compared to mineral diesel engine’s lubricating oil. Physical wear measurement of vital engine parts indicate relatively higher wear of liner bore, piston rings and big end bearing for J5 and J10 fuelled engine while wear of valve mounting, piston, gudgeon pin, crank pin was found to be relatively lower than mineral diesel fuelled engine. It was found that the wear of J5 engine liners is higher compared to mineral diesel fuelled engine. However wear of J10 fuelled engine liner is found to be relatively lower compared to mineral diesel fuelled engine.
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Reports on the topic "Internal Combustion Engine - Piston"

1

Kreider, Kenneth G., and Stephen Samancik. Internal combustion engine thin film thermocouples. Gaithersburg, MD: National Bureau of Standards, January 1985. http://dx.doi.org/10.6028/nbs.ir.85-3110.

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Garrett Beauregard. Findings of Hydrogen Internal Combustion Engine Durability. Office of Scientific and Technical Information (OSTI), December 2010. http://dx.doi.org/10.2172/1031548.

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Jendrucko, R. J., T. M. Thomas, and G. P. Looby. Pollution prevention assessment for a manufacturer of combustion engine piston rings. Office of Scientific and Technical Information (OSTI), August 1995. http://dx.doi.org/10.2172/125045.

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Melton, Sidney W. Petroleum Dependency: The Case to Replace the Internal Combustion Engine. Fort Belvoir, VA: Defense Technical Information Center, February 2015. http://dx.doi.org/10.21236/ada618903.

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Cheng, Wai, Victor Wong, Michael Plumley, Tomas Martins, Grace Gu, Ian Tracy, Mark Molewyk, and Soo Youl Park. Lubricant Formulations to Enhance Engine Efficiency in Modern Internal Combustion Engines. Office of Scientific and Technical Information (OSTI), April 2017. http://dx.doi.org/10.2172/1351980.

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Voldrich, W. Evaluation and silicon nitride internal combustion engine components. Final report, Phase I. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/10191276.

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Marriott, Craig, Manual Gonzalez, and Durrett Russell. Development of High Efficiency Clean Combustion Engine Designs for Spark-Ignition and Compression-Ignition Internal Combustion Engines. Office of Scientific and Technical Information (OSTI), June 2011. http://dx.doi.org/10.2172/1133633.

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Keller, J., and P. Van Blarigan. Internal combustion engine report: Spark ignited ICE GenSet optimization and novel concept development. Office of Scientific and Technical Information (OSTI), August 1998. http://dx.doi.org/10.2172/305628.

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Cloutman, L. D., and R. M. Green. On the wall jet from the ring crevice of an internal combustion engine. Office of Scientific and Technical Information (OSTI), May 1996. http://dx.doi.org/10.2172/378945.

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Pratapas, John, Serguei Zelepouga, Vitaliy Gnatenko, Alexei Saveliev, Vilas Jangale, Hailin Li, Timothy Getz, and Daniel Mather. Integrated Advanced Reciprocating Internal Combustion Engine System for Increased Utilization of Gaseous Opportunity Fuels. Office of Scientific and Technical Information (OSTI), August 2013. http://dx.doi.org/10.2172/1113953.

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