Patent ID: 7172170
Filing Date: 2007-02-06
Classification: F16H,G05D,Y10T

Abstract:
1. A pressure control valve for an automatic transmission of a motor vehicle, comprising a valve unit ( 10 ) configured as a plastic-extruded unit, wherein said valve unit ( 10 ) is arranged coaxially to an actuator unit and serves to control a fluid flow between a supply port ( 18 ) and a consumer port ( 16 ), and wherein fluid channels ( 24 , 25 ) and a valve chamber ( 28 ) are formed in the valve unit ( 10 ), wherein one of said fluid channels is connected with the consumer port ( 16 ), wherein a valve closing member ( 30 ), by means of which a fluid flow between the supply port ( 18 ) and the consumer port ( 16 ) is controllable, is disposed in the valve chamber ( 28 ), and wherein the fluid channels ( 24 , 26 ) and the valve chamber ( 28 ) are formed on an injection-molded preform ( 22 ) that is extrusion-coated with a flange ( 12 ), such that the flange ( 12 ) surrounds the preform ( 22 ), wherein the flange ( 12 ) represents an outer hydraulic region of the valve unit ( 10 ), and wherein the consumer port ( 16 ) and the supply port ( 18 ) are formed on the flange ( 12 ).