中文  |  English  | Deutsch  | Español
业务平台
高压油泵柱塞
高压油泵柱塞
详细介绍:

高压油泵是靠泵中的凸轮轴,带动柱塞在柱塞套中上下往复运动,产生高压油供给喷油器。柱塞的圆柱面上加工有斜槽和直槽相互连通,轴向直槽直通柱塞顶。柱塞套上部钻有两个进油孔,当柱塞下降到这两个进油孔塞出柱塞顶面时,低压油便从这个进油孔往泵腔中进油。当柱塞向上运动时,已经进入泵腔中的油会从两个进油孔反流出一部分,当主代上升到柱塞顶面把两个进油孔封死时,往泵腔中充油才告结束。此时泵腔成了封闭腔。此后,柱塞还继续上升,腔内油压急剧升高,当高到足以克服出油阀弹簧压力时,出油阀被打开,高压油通过高压管供给喷油器。

当柱塞上升到柱塞上的斜槽与进油孔连通时,泵腔中的压力油流回低压腔,泵腔中的压力迅速下降,出油阀在弹簧作用下立即关闭,喷油泵立即停止供油。

 
PPM Solution

Our company has been pursuing higher power,lower consumption, less emission, and safer driving as a sustained goal for technology development. We focus on core products application on global vehicle platforms and have been highly regarded by customers and society.


  Business
Valve Train
Fuel System
Emission System
Safety System
Steering System

About PPM
Company Profile
Corporate Culture
Company History
Our Structure
Honor Certificates
Quality Certificates
Company Snapshot
CopyRight © 2015 PPM(Shen Zhen) Inc. All Right Reserved.
ICP: 10030102