Transmission throttle pressure regulator assembly

Claim 2

In a control valve circuit for an automatic transmission having fluid pressure operated clutch and brake servos adapted to control the relative motion of gear elements of said transmission , characterized in that , a throttle valve assembly (122) comprising a valve body (146), a valve opening (148) in said valve body ; a valve sleeve (164) in said opening having a line pressure supply port (170), an exhaust port (172), a throttle valve pressure supply port (174) and a throttle valve pressure feedback port (176) ; a movable valve spool (162) slidably disposed in said valve sleeve (164), said valve spool (162) having spaced pressure regulating lands (166 and 168) registering with said line pressure supply port (170) and said exhaust port (172) , said feedback port (176) communicating with the interior of said sleeve (164) at one end of said valve spool (162) whereby the line pressure in said line pressure supply port (170) is modulated ; a valve plunger (150) in said opening (148), means (160) for slidably positioning said plunger ; spring means (167) between said plunger (150) and the other end of said valve spool (162) for exerting a variable force on said valve spool (162) that is dependent upon plunger displacement ; and means (184) for manually adjusting the position of said sleeve (164) in said valve opening (148) whereby the pressure modulating characteristic of said throttle valve assembly may be controlled.

Claim 3

In a control circuit for an automatic transmission in a driveline for a vehicle having a throttle controlled internal combustion engine, said transmission having fluid pressure operated clutch and brake servos adapted to control the relative motion of gear elements of said transmission, characterized in that , a throttle valve assembly (122) comprising a valve body (146), a valve opening (148) in said valve body (146) ; a pressure distributor shift valve means (96) for controlling distribution of line pressure to said servos, a pressure regulator valve means (76) adapted to control the operating pressure level of said line pressure ; a valve sleeve (164) in said opening (148) having a line pressure supply port (170), an exhaust port (172), a throttle pressure supply port (174) and a throttle pressure feedback port (176) ; said throttle pressure supply port (176) being in fluid communication with said shift valve and with said pressure regulator valve means (76) ; a movable valve spool (162) slidably disposed in said valve sleeve (164), said valve spool (162) having spaced pressure regulating lands (166 and 168) registering with the ports in said sleeve (164) whereby the line pressure in said line pressure supply port (170) is modulated ; a valve plunger (150) in said opening (148) , means for slidably positioning said plunger ; spring means (167) between said plunger (150) and the other end of said valve spool (162) for exerting a force on said spool (162) upon displacement of said plunger (150) that is opposed by the pressure force of the pressure in said throttle pressure feedback (176) ; and means (184) for manually adjusting the position of said sleeve (164) in said valve opening (148) whereby the pressure modulating characteristic of said throttle valve assembly may be controlled.

Claim 4

In a control circuit for an automatic transmission in a driveline for a vehicle having a throttle controlled internal combustion engine, said transmission having fluid pressure operated clutch and brake servos adapted to control the relative motion of gear elements of said transmission, characterized in that , a throttle valve assembly (122) comprising a valve body (146), a valve opening (148) in said valve body (146) ; a pressure distributor shift valve means (96) for controlling distribution of line pressure to said servos, a pressure regulator valve means (76) adapted to control the operating pressure level of said line pressure ; a valve sleeve (164) in said opening (148) having a line pressure supply port (170), an exhaust port (172), a throttle pressure supply port (174) and a throttle pressure feedback port (176) ; said throttle pressure supply port (176) being in fluid communication with said shift valve and with said pressure regulator valve means (76) ; a movable valve spool (162) slidably disposed in said valve sleeve (164), said valve spool (162) having spaced pressure regulating lands (166 and 168) registering with the ports in said sleeve (164) whereby the line pressure in said line pressure supply port (170) is modulated ; a valve plunger (150) in said opening (148) , means for slidably positioning said plunger ; spring means (167) between said plunger (150) and the other end of said valve spool (162) for exerting a force on said spool (162) upon displacement of said plunger (150) that is opposed by the pressure force of the pressure in said throttle pressure feedback (176) ; and means (184) for manually adjusting the position of said sleeve (164) in said valve opening (148) whereby the pressure modulating characteristic of said throttle valve assembly may be controlled.

Claim 5

The combination as set forth in Claim 1 and 2 , characterized in that, said adjusting means (184/186) comprises a threaded adjusting member (184) extending from said opening to a location on the exterior of said valve opening, said adjusting member (184) being engageable with said valve sleeve (164) whereby the position of said sleeve (164) in said valve opening (148) may be controlled by an adjustment of said adjusting member (184).

Claim 6

The combination as set forth in Claim 3 ,. characterized in that , one part of said sleeve (164) is formed with a cam surface (182), said cam surface being engageable with one end of said adjusting member (184).