박폭 저장력 피스톤 링 팩에 대한 마찰저감 연구
A Study on Friction Reduction Related with the Piston Ring Pack with Thinner Width Ring and Lower Tension Ring
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To satisfy the more severe emission regulation and the demand of higher fuel economy in near future, the combustion pressure and power output of ngines is going to be higher. In order to get the reduction of engine emission and the higher power, it is needed the reduction of the tension and width of ring pack. The lower tension ring and the manufacturing technology of cast iron thinner width ring can bring the friction reduction between the ring and liner during engine running. Therfore, the fuel economy can be achieved. Thereafter the engine emission can be reduced. In this study, by using a developed basic computer program that predicts the inter-ring pressure, the motion of ring and the inter-ring pressure through a crevice volume model between adjacent rings, and the oil film thickness and the friction computed by lubrication theories, it is to be examined the effect of friction reduction from piston ring pack equipped with thinner width ring and lower tension ring.
Abstract
To satisfy the more severe emission regulation and the demand of higher fuel economy in near future, the combustion pressure and power output of ngines is going to be higher. In order to get the reduction of engine emission and the higher power, it is needed the reduction of the tension and width of ring pack. The lower tension ring and the manufacturing technology of cast iron thinner width ring can bring the friction reduction between the ring and liner during engine running. Therfore, the fuel economy can be achieved. Thereafter the engine emission can be reduced. In this study, by using a developed basic computer program that predicts the inter-ring pressure, the motion of ring and the inter-ring pressure through a crevice volume model between adjacent rings, and the oil film thickness and the friction computed by lubrication theories, it is to be examined the effect of friction reduction from piston ring pack equipped with thinner width ring and lower tension ring.
참고문헌 (9)
- 전상명, "피스톤-링 팩에 관한 기초 연구", 한국윤활학회지, 21(2), pp.83~92 (2005), 한국윤활학회
- 전상명, "엔진 오일 소모에 관한 연구", 한국윤활학회지, 21(6), pp.296~301 (2005), 한국윤활학회
- Calculation of Flow in the Piston-Cylinder-Ring Crevices of a Homogeneous-Change Engine and Comparison with Experiment, "Kuo, T", ~, pp.SAE Paper 890838 (1989)
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- Piston Ring Motion and Its Influence on Engine Tribology, "Furuhama, S", ~, pp.SAE Paper No. 790860 (1979)
- Furuhama, S, "On the Flow of the Gas through the Piston Rings", JSME Bullitin, 4(16) (1961)
- Analysis of Piston Ring Lubrication, "Das, P. K", ~, pp.SAE Paper No. 760008 (1976)
- Yun, J. E, "Study of a Piston Ring Assembly Design through Experimental and Numerical Investigation of Inter- Ring Gas Pressure and Blow-By in a Four-Stroke SI Engine", The 8th International Pacific Conference on Automotive Engineering (1995)
- Miltsios, G. K, "Solution of the Lubrication Problem and Calculation of the Friction Force on the Piston Ring", J. of Tribology, 111, pp.635~641 (1989)