저마찰 박막코팅 적용 타펫 부품의 마찰특성에 관한 연구
A Study on the Friction Characteristics of Tappet by Low Friction Coating
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The wear of the contact in the tappet accounts for the greatest portion of entire friction loss of an engine, leading to the occurrence of abnormal wear. The coated specimens for cam-tappet wear test were producted by using PVD-Sputtering coating method. It examined the friction characteristics occurring between the cam and the tappet by using the dedicated wear tester and found that the friction torque value was reduced through comparison testing with the existing part when the low friction coating was applied. So application of the low friction coating to actual vehicles will reduce the fuel economy and occurrence of noise-vibration.
Abstract
The wear of the contact in the tappet accounts for the greatest portion of entire friction loss of an engine, leading to the occurrence of abnormal wear. The coated specimens for cam-tappet wear test were producted by using PVD-Sputtering coating method. It examined the friction characteristics occurring between the cam and the tappet by using the dedicated wear tester and found that the friction torque value was reduced through comparison testing with the existing part when the low friction coating was applied. So application of the low friction coating to actual vehicles will reduce the fuel economy and occurrence of noise-vibration.
참고문헌 (4)
- H. Kong, "Evaluation of the Wear Life of MoS2-Bonded-films in Tribo-testers with Different ContactConfiguration", Wear, 215, pp.25~33 (1998)
- Barry, H. F, "Factors Relation to the Performance ofMoS2 as a Lubricant", Lubrication engineering, 33, pp.475~480 (1997)
- I. M. Hutchings, "Tribology and Wear of EngineeringMaterials" (1992), CRC Press
- J. T. Kovach, "EngineFriction Reduction for Improved Fuel Economy", Presented at the SAE International Congress and Exposition (1982)