Results 211 to 220 of about 47,254 (254)
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Total Cooling of Piston Engines by Direct Water Injection
SAE Technical Paper Series, 1970<div class="htmlview paragraph">A method of cooling piston engines by direct injection of a fluid into the combustion chamber is described. Significant changes in power performance, fuel octane or cetane number requirements, exhaust emission quality, engine life, and engine configuration can be expected from injection cooling.</div> <div
W. D. Weatherford, R. D. Quillian
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Numerical and Experimental Investigation of Oil Jet Cooled Piston
SAE Technical Paper Series, 2005<div class="htmlview paragraph">Thermal loading of diesel engine pistons has increased dramatically in recent years due to applications of various advanced technologies to meet low emission and high power requirements. Control of piston temperatures by cooling of pistons has become one of the determining factors in a successful engine design. The
Mani Bijoy Varghese +2 more
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Design Data for “Cocktail Shaker” Cooled Pistons and Valves
SAE Technical Paper Series, 1965<div class="htmlview paragraph">Cocktail shaker cooling is the commonly used term to describe heat transfer in a reciprocating hollow cylinder partially filled with a liquid. The sodium filled valve is a widely used application of this heat transfer concept.</div> <div class="htmlview paragraph">This paper presents information that ...
J. E. Bush, A. L. London
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Numerical Simulation of Piston Cooling With Oil Jet Impingement
Journal of Heat Transfer, 2016Convective heat transfer of an impinging jet is numerically evaluated for piston cooling process. A circular jet of subcooled engine oil that impinges normally onto the inner surface of the piston for an engine operating at normal condition is considered in the study.
G. Nasif, R. M. Barron, R. Balachandar
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SAE International Journal of Engines, 2017
<div class="section abstract"><div class="htmlview paragraph">Oscillating cooling characteristics in piston oil cooling gallery of internal combustion engines were simulated by adopting Coupled Level Set Volume of Fluid method and Arbitrary Lagrangian Eulerian dynamic grid technique.
Nanlin Zhu +3 more
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<div class="section abstract"><div class="htmlview paragraph">Oscillating cooling characteristics in piston oil cooling gallery of internal combustion engines were simulated by adopting Coupled Level Set Volume of Fluid method and Arbitrary Lagrangian Eulerian dynamic grid technique.
Nanlin Zhu +3 more
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Experimental and Numerical Analysis of the Piston Cooling Jet’s Performance
ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 3, 2010Recently, with development in the output power and material cost efficiency, the value of thermal and mechanical stress on many engine parts such as piston is increased. On the other hands, the strength of aluminum alloys used for piston manufacturing decreases with temperature. So, for lightweight pistons, the strength reduction should be minimized to
Mohamad Izadi +3 more
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A contribution to film coefficient estimation in piston cooling galleries
Experimental Thermal and Fluid Science, 2010The need to reduce fuel consumption and exhaust emissions in internal combustion engines has been drastically increased during last years. One of the most important processes affecting these parameters is heat transfer from the in-cylinder gas to the surrounding walls, as this mechanism has a direct influence on the combustion process.
A.J. Torregrosa +3 more
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Development of Pistons Suitable for Compact Air-Cooled Engines
SAE Technical Paper Series<div class="section abstract"><div class="htmlview paragraph">For the realization of carbon neutrality, we are working on research to improve the thermal efficiency of engines for motorcycles. Friction losses in the cylinder bore account for about 40% of the total friction losses of the engine (<span class="xref">Figure 1</span>)
Naoyuki Suda +2 more
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PISTON ENGINE COOLING: AN EVERGREEN PROBLEM
2011Immediately before Wold War II (WWII), piston engine cooling has become a resource instead of a problem. The Meredith paper defined a static engine that converted the heat dissipated by the engine into thrust. Some solutions (see the De Havilland Mosquito, Messerschmidt BF 109F, Supermarine Spitfire...) used hot air also to improve the efficiency of ...
PIANCASTELLI, LUCA +3 more
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