汽车发动机减振皮带轮螺栓脱落的分析  

Analysis of Falling Off of Bolt of Vibration Damping Pulley of Automobile Engine

作　　者：尹建东 陈丽霞 席洪亮 白小婷 Yin Jiandong;Chen Lixia;Xi Hongliang

机构地区：[1]宁波吉利罗佑发动机零部件有限公司,浙江宁波315336

出　　处：《机械制造》2022年第6期88-91,共4页Machinery

摘　　要：汽车发动机在台架试验过程中因异响停机,检查发现减振皮带轮螺栓脱落。针对这一问题进行分析,确认正时皮带轮端面与曲轴肩接触面之间存在传递摩擦力矩不足的情况,导致减振皮带轮螺栓脱落。通过对正时皮带轮端面增加激光刻蚀,使正时皮带轮端面与曲轴肩接触面之间传递摩擦力矩满足要求。整改后,汽车发动机台架试验过程中不再发生减振皮带轮螺栓脱落问题。The car engine stopped due to abnormal noise during the bench test, and the inspection found that the bolt of vibration damping pulley fell off.To analyze this problem, it was confirmed that there was insufficient friction torque transmitted between the end face of the timing pulley and the contact surface of the crankshaft shoulder, which caused the bolt of vibration damping pulley to fall off.By adding laser etching to the end face of the timing pulley, the friction torque transmitted between the end face of the timing pulley and the contact surface of the crankshaft shoulder can meet the requirement.After the rectification, the failure of the falling off of the bolt of vibration damping pulley no longer occurs during the bench test of the car engine.

关 键 词：汽车 发动机 皮带轮 螺栓 故障 

分 类 号：U464[机械工程—车辆工程] TH131.3[交通运输工程—载运工具运用工程]