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Study of Engine Oil Jet System Effect on Engine Friction
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 Title & Authors
Study of Engine Oil Jet System Effect on Engine Friction
Min, Sun-Ki;
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 Abstract
When turbochargers are applied to engines, the temperature of the engine becomes high, making the cooling of pistons very important. To solve this problem, an oil jet is used. The oil jet provides oil to the underside of piston for cooling. When an oil jet is used, oil pump size-up and oil cooler are needed because of the increased oil flow rate and higher oil temperature. On the other hand, these increase the friction torque of the engine. This study examined how much the friction torque of an engine increases by an oil jet, oil cooler, and oil pump size-up. In addition, the proportions of the friction torque of the engine increased by each part were measured by changing the engine assembly condition. At low speed, the oil pump and oil cooler had a larger effect on the friction torque than the other factors. At high speed, oil cooler had a larger effect than the other factors.
 Keywords
Friction Loss;Friction torque;Oil Cooler;Oil Jet;Oil pump;
 Language
Korean
 Cited by
 References
1.
Byung Soon Min, Joong Soo Kim, Jae Kwon Choi, "A Study on the Method and Effect of Piston Cooling", KSAE, Transaction of the KSAE, Vol. 7, No. 3, 1999.

2.
Varghese, Mani Bijoy., Goyal, Sandeep Kumar., Agarwal, Avinash Kuma., "Numerical and experimental investigation of oil-jet-cooled piston", SAE, SAE-2005-01-1382, 2005 DOI: http://dx.doi.org/10.4271/2005-01-1382

3.
Wakabayashi, Ryo., Shimada, Takamasa., Takiguchi, Masaaki., "Effects of oil flow rate of piston cooling jet on piston friction characteristics effects of piston clearance, skirt coating and FM additives", SAE, SAE-2003-08-0238,2003, 2003

4.
Sunki Min, Bong Jo Kim, Choonggu Lee, "Increase of Motoring Torque According to Crankcase Oil Quantity", The 13th International Pacific Conference on Automotive Engineering International Conference, IPC-13-1228 1232, 2005