汽车发动机中凸轮与挺柱接触应力的分析
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摘要
凸轮与挺柱是汽车发动机中最易产生磨损的一对摩擦副,如果在研发中存在不恰当的设计,两者将会产生磨损,严重影响发动机的可靠性。在发动机凸轮与挺柱结构确定的情况下,对气门间隙、发动机负荷等凸轮与挺柱接触应力的影响因素进行研究,评价不同参数对两者接触应力的影响,为后期汽车发动机产品的合理设计提供参考。
The cam and the tappet is the most susceptible pair of friction in the automotive engine. If there is an improper design in R & D of the product, the cam and the tappet will cause wear and tear, seriously affecting the reliability of the engine. Under the condition that structures of the cam and the tappet in the engine were determined, the factors affecting the contact stress between the cam and the tappet such as the valve clearance and engine load etc.were studied,and the impacts of different parameters to their contact stress were evaluated to provide a reference for rational design of the automotive engine product at late stages.
The cam and the tappet is the most susceptible pair of friction in the automotive engine. If there is an improper design in R & D of the product, the cam and the tappet will cause wear and tear, seriously affecting the reliability of the engine. Under the condition that structures of the cam and the tappet in the engine were determined, the factors affecting the contact stress between the cam and the tappet such as the valve clearance and engine load etc.were studied,and the impacts of different parameters to their contact stress were evaluated to provide a reference for rational design of the automotive engine product at late stages.
引文
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[2]温国伟.接触应力及润滑油膜对凸轮磨损影响的研究[D].太原:中北大学,2012.
[3]曹佳骏,练兵.某柴油机配气机构异常磨损分析及改进[J].柴油机设计与制造,2016(4):32-34.
[4]赵会军,袁宝良,李晓娟,等.挺柱/凸轮材料配对试验研究[J].现代车用动力,2013(2):48-51.
[5]练兵.一种V型柴油机挺柱异常磨损的检测与分析[J].现代制造技术与装备,2017(7):28-31.
[6]张智.混合润滑状态下配气凸轮磨损特性研究[D].北京:北京理工大学,2015.
[7]安卓,于德政,李一,等.某杯式挺柱配气机构凸轮磨损问题分析[J].汽车实用技术,2018(14):91-92,101.
[8]段伦静,章文洁,李欣.柴油机凸轮-挺柱的接触应力分析及疲劳寿命估算[J].车用发动机,2014(1):1-6.
[9]魏延刚,宋宇谟.圆锥滚子轴承受载过程内部载荷与接触应力研究[J].机械制造,2018,56(2):37-40.
[10]陈凌珊,甘慧庆,赵吉华,等.凸轮-挺柱摩擦副的设计改进与试验研究[J].润滑与密封,2002(2):27-28,31.