有直动式液压间隙调节器气门机构的一种动态测量方法

A Dynamic Measuring Method for Valve Mechanism with Direct Action Type Hydraulic Lash Adjuster

直动式气门机构液压间隙调节器 (HLA),由于结构紧凑、气门机构传动链短，难以实现动态测量。提出将气门弹簧移开，使其顶在气门头部，让出传感器安装及自由引线的空间，从而得以测量直动式 HLA的高度变化量。提出的有直动式 HLA的气门机构的测量方法，可用于研究 HLA的动态性能，以及与其它试验方法结合推算 HLA高压腔机油混气量。

It is difficult to realize dynamic measuring for valve mechanism with a direct action type hydraulic lash adjuster(HLA) due to its compact structure and shorter driving chain of valve mechanism.A proposal has been made that move away the valve spring,sustain it up with valve head and leave the space for sensor installation and free leading wire to allow measurement of height change of direct action type hydraulic lash adjuster.The measuring method for valve mechanism with a direct action type hydraulic lash adjuster can be used in studying the dynamic performances of HLA,and combined with other test methods can be used to estimate the air content mixed with oil in HLA high pressure cavity.