摘要
为减小发动机起动工况的振动对汽车舒适性的影响(这对于应用频繁起动-停机控制策略的汽车来说尤其重要),在一台Jetta1.6L发动机上测试了发动机起动第一个循环的振动信号,研究了活塞初始位置、冷却液温度、拖动转速对起动过程振动的影响规律。结果表明,当发动机活塞初始位置处在进气门关闭之后接近上止点时,发动机起动振动较小。热机(85℃)起动振动相比冷机(20℃)起动振动略有降低。拖动转速对起动振动影响非常明显,即发动机快速起动时的振动相比原机低速起动的振动小很多。
To reduce the impact of engine vibration during start process on the vehicle ride comfort,which is important in particular when the start-stop control strategy is applied in the engine,the vibration signals of the first cycle during start of engine were measured,and the effects of the initial position of piston,the cooling liquid temperature and the cranking speed on starting vibration were investigated on a Jetta 1. 6 L gasoline engine. The results show that when the piston stays initially at the position near the top dead center after the intake valve closing,engine starting vibration is relatively weak. The vibration at warm starting（ corresponding cooling liquid temperature 85 ℃） is weaker than that at cold starting（ 20 ℃） . The cranking speed makes a notable impact on the starting vibration of the engine,rapid cranking makes much weaker vibration than original basic engine slow cranking does.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2010年第4期937-941,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
'863'国家高技术研究发展计划项目(2006AA110106)
关键词
动力机械工程
汽油机振动
起动过程
power machinery and engineering
gasoline engine
vibration
start process
