公开(公告)号：US20160312909A1

公开(公告)日：2016-10-27

申请号：US15068074

申请日：2016-03-11

Applicant: GM Global Technology Operations LLC

Inventor： Thomas R. Martin, JR. ,  James D. Hendrickson ,  Chinar S. Ghike ,  Christopher G. Benson

IPC: F16K11/07

CPC classification number: F16K11/07 ,  F16H61/0009

Abstract: A method of selectively matching at least one diameter of a valve spool or piston of a spool valve to at least one diameter of a valve bore in an automatic transmission valve body reduces hydraulic fluid leakage in the valve body. The method includes the steps of fabricating a spool valve having at least one spool or piston, measuring a diameter of the at least one spool or piston and identifying the spool valve as belonging to certain size class, fabricating a valve body having a plurality of machined bores, measuring the diameter of at least one portion of a bore and, based on this measurement, installing a spool valve of the appropriate size class in the bore of the valve body.

Abstract translation: 选择性地将滑阀的阀芯或活塞的至少一个直径与自动变速器阀体中的阀孔的至少一个直径相匹配的方法减少了阀体中的液压流体泄漏。 该方法包括以下步骤：制造具有至少一个线轴或活塞的滑阀，测量至少一个滑阀或活塞的直径并将滑阀识别为属于一定尺寸级，制造具有多个机加工的阀体 孔，测量孔的至少一部分的直径，并且基于该测量，将适当尺寸等级的滑阀安装在阀体的孔中。