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자료유형
학술저널
저자정보
전상명 (호서대학교)
저널정보
한국트라이볼로지학회 Tribology and Lubricants Tribology and Lubricants 제36권 제3호
발행연도
2020.6
수록면
168 - 192 (25page)

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초록· 키워드

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In recently designed diesel engines, the running conditions for piston-pin bearings have become severe because of the higher combustion pressure and increased temperature. Moreover, the metal removal from the bushing material has strongly reduced the ability of the antifriction material to accept asperity contacts. Therefore, it is necessary to find ways of reducing wear scar on the connecting-rod small-end bushing and pistonpin boss bearing related to the higher combustion pressure on the power cell of an engine. In this work, the position and level of material removal from the surfaces of the bushing and bearing under such severe operating conditions - for example, maximum power and torque conditions of a passenger car diesel engine - are estimated for several combinations of surface roughness. First, piston-pin rotating motion is investigated by calculating the friction coefficient at piston-pin bearings, the oil film thickness, and the frictional torques induced by hydrodynamic shear stress. Subsequently, the wear scarring on the surfaces of a connecting-rod small-end bushing and two piston-pin boss bearings related to piston-pin rotational motion is numerically calculated under the maximum power and torque operating conditions. This work is helpful to determine the reasonable surface roughness of the bushing and bearing for reducing wear volume occurring at the interface between a bearing and a shaft.

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Abstract
1. 서론
2. 이론
3. 마모 시뮬레이션 절차 요약
4. 가정 및 입력 데이터
5. 결과
6. 결론
References

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UCI(KEPA) : I410-ECN-0101-2020-551-000842477