摘要
利用MC900瞬时记录仪对一款2.8 L排量柴油发动机的飞轮螺栓拧紧轴向力进行测量,针对现有30 N·m+90°的拧紧工艺出现轴向力不稳定的现状,提出拧紧轴反转消除螺栓接触表面毛刺的"磨光"工艺改进方案.对比分析一次"磨光"和二次"磨光"试验的效果,并对磨光时采用的力矩和转角进行研究.试验结果表明采用70 N·m-180°+30N·m+70°-180°+30 N·m+90°的二次磨光拧紧工艺对飞轮螺栓轴向力稳定的保证有明显的改进.
The paper measured the flywheel bolts’ axial force of a 2.8 L diesel engine by MC900 transient recorder, and presented a process which inverse the tightening shaft to grind the touch face to offset the un-steadiness of current tightening process of “30 N·m＋90 deg”. It respectively tested once polishing and twice polishing, and the polishing with torque and angle were studied. Test results showed the process of “70 N·m-180 deg＋30 N·m＋70 deg-180 deg＋30 N·m＋90 deg”had obvious improvement to ensure the stabilization of the axial force.
出处
《韶关学院学报》
2014年第10期29-33,共5页
Journal of Shaoguan University
基金
韶关学院大学生创新创业训练项目(培cxcy2013-009)
韶关学院2012年度科研项目(韶学院[2012]202号)
关键词
柴油机
飞轮螺栓
拧紧
改进
diesel engine
flywheel bolts
tighten
improvement
