曲轴箱通风呼吸管结冰问题解决方案  

Solution project of Freezing Problem of Crankcase Ventilation Respiratory Tube

作　　者：简辉[1] 张弘[1] 朱戈[1] 张锦国[1] 齐书浩[1] 翁炳良 

机构地区：[1]上海汽车集团股份有限公司技术中心,上海201804

出　　处：《上海汽车》2014年第12期53-55,62,共4页Shanghai Auto

摘　　要：分析极寒环境下,发动机窜气在呼吸管处凝结致使曲轴箱压力升高,导致机油尺弹出或曲轴箱后油封失效漏油等问题。介绍通过曲轴箱通风系统中全负荷呼吸管的更改设计,提出解决方案并进行试验认证,以保证车辆在极寒环境下正常运行。The blow-by from the engine iced in the breathing pipe during the extremely cold environment, then the blow-by couldn＇ t spill over, As a result, the pressure of the crankcase increased. With the pressure increased, the oil dipstick jumped up or the rear crankshaft seal is invali- dated. The renovation of breathing pipe to resolve the icing problem is introduced, also there are some tests to validate the renovation.

关 键 词：曲轴箱通风系统 发动机 汽车 结冰 呼吸管 

分 类 号：U464.133[机械工程—车辆工程]