使用因素对多缸内燃机主轴承润滑的影响  

Influence of practical complications on lubrication of main journal bearings in multi-cylinders ICE

作　　者：王刚志[1] 舒歌群[1] 张家雨[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室

出　　处：《农业工程学报》2007年第2期107-111,共5页Transactions of the Chinese Society of Agricultural Engineering

摘　　要：对某多缸内燃机滑动主轴承的热流体动力润滑(THD)计算分析表明,除设计因素外,实际使用因素也对主轴承的润滑状况产生不良影响。通过对主轴承轴心轨迹和最小油膜厚度(MOFT)的计算分析发现,内燃机超负荷运行,主轴颈与轴瓦间隙过大,过热及冷机加载等因素不利于主轴承流体动力润滑膜的形成,并加速主轴承的摩擦和磨损。Thermohydrodynamic calculation and analysis for main journal bearings in multi-cyhnders ICE were made, which indicates that besides design parameters, practical complications also have influence on lubrication condition of main journal bearings. By means of calculation and analysis for orbital paths and minimum oil film thickness （MOFT） of main bearings, it was discovered that some factors, such as overload, big radial clearance between pin and wall, overheat and loading with cold machine of multi-cylinders ICE can make against oil film formation of lubricant, quickly produce friction and wear.

关 键 词：内燃机 滑动轴承 轴心轨迹 最小油膜厚度 

分 类 号：TK414.11[动力工程及工程热物理—动力机械及工程]