Global ETD Search
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 38 for “"Engine oil"”.
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The process of fuel transport in engine oil
… Institute of Technology, Dept. of Mechanical Engineering, 1997.
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EVALUATION OF TERAHERTZ TECHNOLOGY TO DETERMINE CHARACTERISTICS AND CONTAMINANTS IN ENGINE OIL
Engine oil is critical to tractor engine performance. Engine designers recommend farmers change engine oil depending on recommendations by engine manufacturers. Engine manufacturers did not take into account different tasks often performed by tractors in fields, like tillage or seeding. Farmers do …
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The use of laser induced fluorescence for measurement of engine oil film thickness
… Institute of Technology, Dept. of Mechanical Engineering, 1996.
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An investigation of the heat rejection to the engine oil in an internal combustion engine.
… Institute of Technology, Dept. of Mechanical Engineering, 1944.
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Piston ring pack design effects on production spark ignition engine oil consumption : a simulation analysis
One of the most significant contributors to an engine's total oil consumption is the piston ring-pack. As a result, optimization of the ring pack is becoming more important for engine manufacturers and lubricant suppliers. This leads to current efforts to control the oil transport and flow through …
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Experimental study of lube oil characteristics in the PCV system and effects on engine oil consumption
Engine oil consumption is an important source of hydrocarbon and particulate emissions in modem automobile engines. Great efforts have been made by automotive manufacturers to minimize the impact of oil consumption on engine emissions. Research engineers in the last decade have been trying to study …
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Experimental study of engine oil film thickness dependence on liner location, oil properties and operating conditions
… Institute of Technology, Dept. of Mechanical Engineering, 1995.
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The effects of lubrication system parameters and exhaust aqueous injection on diesel engine oil consumption and emissions
… Institute of Technology, Dept. of Ocean Engineering, 1995, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Investigations of the Tribological Effects of Engine Oil Dilution by Vegetable and Animal Fat Feedstock Biodiesel on Selected Surfaces
… fossil fuels. Biodiesels can be used in diesel engines with no major modification, but its use leads to some degree of engine oil dilution because of biodiesel leaking and scrapping to engine oil pan. Biodiesels can be made from vegetable and animal fat feedstocks. Therefore, the fatty acid …
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Measurement and analysis of piston inter-ring pressures and oil film thickness and their effects on engine oil consumption
… Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Modeling engine oil vaporization and transport of the oil vapor in the piston ring pack on internal combustion engines
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 …
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A deterministic model for wear of piston ring and liner and a machine learning-based model for engine oil emissions
… are required for design of internal combustion engines, to meet the energy saving and the emissions standards in the new era. Engine emissions and engine durability are two of the most important factors in the development of IC engines. Engine particulate emissions are strongly correlated with …
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Incident-response monitoring technologies for aircraft-cabin air quality
… (OP) compounds emitted from the jet engine bleed air system during smoke/fume incidents. Tri-cresyl phosphate (TCP), a common anti-wear additive in turbine engine oils, is an important component in today’s global aircraft operations. However, exposure to TCP increases risks of certain …
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Estimation of oil consumption due to in-cylinder vaproization in internal combustion engines
Two models were developed to estimate the rate of oil consumption due to the vaporization of oil from (1) the cylinder liner and from (2) the piston ringpack in an internal combustion engine. The purpose of the models is to gauge the importance of oil vaporization as a contributor to overall engine …
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Waste heat recovery from a high temperature diesel engine
… economy and emissions from internal combustion engines (ICEs) are driving innovation in engine efficiency. Though incremental efficiency gains have been achieved, most combustion engines are still only 30-40% efficient at best, with most of the remaining fuel energy being rejected to the …
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Improving construction machine engine system durability in Latin American conditions
… the durability of construction equipment diesel engines is reduced within the context of the system engineering life cycle. This results in a greater number of warranty claims, increased customer product dissatisfaction, and delays in completing contracted projects. Peer-reviewed literature lacks …
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Nanocompósito de poliamida/óxido de grafeno reduzido: um eficiente nanomaterial aplicado no tratamento de água produzida (ap) e separação de óleo/água do mar
Contamination derived from water produced from oil reservoirs and oil spills at sea are environmental problems of great relevance. Therefore, the search for effective, sustainable, easy-to-apply and low-cost methods for oil/water separation has been the subject of many studies in the last two …
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Characterization and modeling of the fundamental aspects of oil transport in the piston ring pack of internal combustion engines
Engine oil consumption is one of the primary interests for the automotive industry in controlling emissions and reducing service cost. Due to a lack of understanding of the mechanisms of oil transport along the piston, reducing oil consumption from the ring pack of internal combustion engines has …
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Investigation of diesel soot-mediated oils and additive package on wear
… to study the effects of soot contaminated engine oil on wear. The variables that were considered were the Base stock (Group1, Group2), Dispersant level and ZDP level. The above three variables were formulated at two levels: Low (-1), and High (1), which resulted in 23 matrix (8 oil blends). …
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