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http://dx.doi.org/10.3795/KSME-A.2002.26.10.2159

The Effects of Additional Factors on the Engine Friction Characteristics  

Cho, Myung-Rae (현대자동차 파워트레인연구소)
Kim, Joong-Soo (현대자동차 파워트레인연구소)
Oh, Dae-Yoon (현대자동차 파워트레인연구소)
Han, Dong-Chul (서울대학교 기계항공공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.26, no.10, 2002 , pp. 2159-2164 More about this Journal
Abstract
This paper reports on the effects of additional factors on the engine friction characteristics. The total friction loss of engine is composed of pumping and mechanical friction loss. The pumping loss was calculated from the cylinder pressure, and the mechanical friction loss was measured by strip-down method under the motoring condition. The various parameters were tested. The engine friction loss was much affected by oil and coolant temperature. The low viscosity oil was very effective to reduce the friction loss, and friction modifier was very useful to reduce the friction loss at lower engine speed. The engine friction loss was varied with engine running time because of surface roughness decreasing and oil degradation. To prevent oil-churning effect, it was very important to maintain the proper oil level. The presented results will be very useful to understand friction characteristics of engine.
Keywords
Friction Loss; Pumping Loss; Mechanical Friction loss; Strip-Down;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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