液压气门间隙调节器及有间隙调节器的气门机构的研究  

Hydraulic Valve Lash Adjuster (HLA) and Valve Train with HLA

作　　者：赵雨东[1] 陆际清[1] 仝坤 葛青 

机构地区：[1]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《内燃机学报》2000年第3期324-330,共7页Transactions of Csice

摘　　要：气门机构采用液压间隙调节器 (HLA)有诸多好处 ,但也带来了起动噪声、气门机构刚度降低、HLA对气门机构动态特性敏感以及可能发生泵升等问题。为此 ,探讨了 HL A液压模型和弹簧—阻尼模型参数的含义与确定方法 ,提出了一种推算 HLA高压腔机油混气量的方法 ,对一个有直动式 HLA的气门机构进行了动力学计算。计算结果与实测结果基本一致 ,表明了所采用的模型和模型参数确定方法。Hydraulic lash adjusters have many advantages for valve train,however,they generate some problems such as engine start noise,lower valve train stiffness,high sensitivity to valve train dynamic behavior,and possible pump up.The hydraulic model and the spring damper model of HLA are presented.Meaning and determination of parameters in these models are discussed.A method of determining oil aeration in HLA high pressure chamber is proposed.Experimental validation of a valve train dynamic simulation shows that HLA models,and methods of determining model parameters and oil aeration in HLA are feasible.

关 键 词：气门机构 液压间隙调节器 动力学模型 

分 类 号：TK413.43[动力工程及工程热物理—动力机械及工程]