Patent ID: 6689007
Filing Date: 2004-02-10
Classification: F16H,Y10T

Abstract:
An improved manual valve for an automatic transmission, said manual valve having a plurality of control lands formed thereon including a Park control land and a primary control land to control the flow of hydraulic fluid within the valve body of said transmission to provide proper operation for a selected gear range including Park, Neutral, Reverse, Drive, Manual Second, and Manual Low gear ranges, wherein the improvement comprises:flow restricting means formed on said manual valve including a secondary control land for blocking the flow of said hydraulic fluid to pressure reducing circuits in said Park gear range; and backpressure generating means integrated within said manual valve for generating backpressure to a pressure regulator valve within a first fluid circuit in said valve body in order to effect an increase in the flow of said hydraulic fluid within a second fluid circuit when said Park gear range is selected.