Providing Wear Protection for Flat- Tappet （Sliding） Camshaft Followers in Rebuilt Engines  

作　　者：Larry M. Bendele Nian Z. Sun 

机构地区：[1]Southwest Research Institute, San Antonio, Texas, USA

出　　处：《润滑油》2007年第1期11-14,共4页Lubricating Oil

摘　　要：Rebuilt engine 'break-in' is the most critical period for long-term durability for a flat-tappet valvetrain.Zinc dialkyl dithio phosphate(ZDDP) has proven to be a cost-effective engine oil additive for anti-wear protection and oxidation resistance.But,tightening exhaust emission standards are requiring modern lubricants to have reduced levels of ZDDP additives.If the valvetrain break-in is successfully completed,then modern low-phosphorus lubricants can be used with confidence at subsequent oil change service intervals.Rebuilt engine ＂break - in＂ is the most critical period for long - term durability for a fiat - tappet valvetrain. Zinc dialkyl dithio phosphate （ZDDP） has proven to be a cost - effective engine oil additive for anti - wear protection and oxidation resistance. But, tightening exhaust emission standards are requiring modem lubricants to have reduced levels of ZDDP additives. If the valvetrain break- in is successfully completed, then modem low- phosphorus lubricants can be used with confidence at subsequent oil change service intervals.

关 键 词：发动机 磨损保护 滑动凸轮轴 机油添加剂 二烷基二硫代磷酸锌 润滑油 

分 类 号：U260.331.1[机械工程—车辆工程]