公开(公告)号：US3704696A

公开(公告)日：1972-12-05

申请号：US3704696D

申请日：1971-03-08

Applicant: EATON CORP

Inventor： ABELL ROY F JR

IPC: F01L1/25 ,  F01L1/04

CPC classification number: F01L1/25

Abstract: A hydraulic valve lifter for use in a direct acting overhead camshaft valve gear of an internal combustion engine includes a body member, a plunger member located at least partially within the body member, and a face member located at least partially within the body member and having a cam engageable surface thereon. A fluid reservoir is located between the face member and the body member and a pressure chamber is disposed between the plunger member and the body member for taking up lash in the valve gear. A leakage passageway is provided between the face member and the body member and provides for the flow of lubricating fluid from the reservoir to the cam engaging surface of the face member to thereby provide for lubrication of the cam engaging surface and the cam. The leakage passageway also provides for air leakage from the lifter to prevent air lockup of the lifter.

Abstract translation: 一种用于内燃机的直接作用的顶置凸轮轴气门齿轮的液压气门挺杆，包括主体构件，至少部分位于主体构件内的柱塞构件和至少部分位于主体构件内的面构件，并且具有 其上的凸轮可接合表面。 流体储存器位于面部构件和主体构件之间，并且压力室设置在柱塞构件和主体构件之间，用于卷取阀齿轮中的间隙。 在面部构件和主体构件之间设置泄漏通道，并且使润滑流体从储存器流到面部构件的凸轮接合表面，从而提供凸轮接合表面和凸轮的润滑。 泄漏通道还提供了来自升降机的空气泄漏，以防止升降机的空气锁定。