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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 177 for “"Internal combustion engines"”.
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Heat losses in internal combustion engines
… with the effects of cooling and heat losses in internal combustion engines. The object of this work was to examine and research various cooling concepts and methods to reduce heat loss to engine coolant, improve thermal efficiency and to predict heat transfer values for these alternatives. The …
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Combustion efficiency in internal combustion engines
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
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Synthesis gas use in internal combustion engines.
… of this dissertation was to investigate the combustion characteristics of a compression ignition, spark ignition, and homogeneous charge compression ignition engine operating on various blends of synthesis gas. To fully investigate the three ICE operating regimes, experimental investigations …
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Temperature entropy diagrams for internal combustion engines
Made available in DSpace on 2017-11-30T22:11:18Z (GMT). No. of bitstreams: 2 5970354.pdf: 2788422 bytes, checksum: d2a03733bffdff23d803867d1ee98a98 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1909
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Modeling piston skirt lubrication in internal combustion engines
… 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. …
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Ethyl alcohol as fuel for internal combustion engines
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1960
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Modeling of Multicomponent Fuel Vaporization in Internal Combustion Engines
Finally, a preliminary study on modeling micro-explosions and flash boiling was performed. These two phenomena were modeled using a bubble-droplet system. A description was formulated to predict bubble growth and was verified using experiment data. Both the breakup due to aerodynamical force and …
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Modeling Unburned Hydrocarbon Formation Processes in Internal Combustion Engines
… under-mixing leading to unstable or incomplete combustion.
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Modeling of piston pin lubrication in internal combustion engines
… 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 …
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Laser ignition for internal combustion engines via fiber optic delivery
… and improve the efficiency of Otto cycle engines, the ignition system is often a limiting factor. Many "high energy" ignition systems have been developed, but almost all of these are based on traditional electric arc spark plugs. Laser ignition represents a fundamentally different approach …
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Mathematical modelling of flow and combustion in internal combustion engines
… of mathematical modelling of fluid flow and combustion in internal combustion engines. In particular, the investigation of three topics that constitute prime sources of uncertainty, in current numerical models, namely turbulence modelling, inaccuracies in the solution procedure specific to …
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A methodology for turbocharging single cylinder four stroke internal combustion engines
… for turbocharging single cylinder four stroke internal combustion engines, a model used to evaluate it, an experimental setup used to test it, and the findings of this experiment. A turbocharged engine has better fuel economy, cost efficiency, and power density than an equivalently sized, …
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Piston ring design for reduced friction in modern internal combustion engines
… 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 …
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Cold start fuel management of port-fuel-injected internal combustion engines
The purpose of this study is to investigate how changes in fueling strategy in the second cycle of engine operation influence the delivered charge fuel mass and engine out hydrocarbon (EOHC) emissions in that and subsequent cycles. Close attention will be paid to cycle-to-cycle interaction of the …
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Numerically generating topology of the liner finish in internal combustion engines
Internal combustion (IC) engines are broadly utilized today. The friction caused by piston rings in IC engines contributes around 20% of the mechanical friction losses. The liner finish is the most critical parameter to define the tension and other design parameters of the piston rings for proper …
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Investigation of Plasma Electrolytic Oxidation (PEO) Coated Bores in Internal Combustion Engines
… in striving to reduce energy loss and make internal combustion engines more efficient. An area of potential improvement is through the reduction of frictional parasitic losses in tribological systems. This study investigates the feasibility of use for low-friction Plasma Electrolytic …
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Modeling the performance of the piston ring-pack in internal combustion engines
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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