Patent ID: 9556826
Date: 2017-01-31
CPC Classifications: F01L,F02F,F02M,F16K

Claim:
1. An improved apparatus for reducing friction in an Exhaust Gas Recirculation (EGR) driver, comprising: a space member mounted on a stem and having a side provided with a plurality of depressed portions to reduce a contact area with an inner side of a valve, such that the friction generated by a contact of the stem with a stem guide when the stem provided inside the valve vertically moves is reduced, wherein the depressed portions are disposed along the side of the space member and have a predetermined depth into an inside of the space member, and wherein a central portion of the space member is provided with a stem hole through which the stem penetrates, and an upper surface of the space member is provided with a plurality of upper concave portions around the stem hole to reduce a contact area with the inner side of the valve when the space member vertically moves.