Transmission selector valve.

摘要

A transmission has a manual selector valve (128) which is reciprocally and rotatably mounted in a valve body (148) and operable in a conventional "H" shift pattern to permit selection of first to fifth forward drive ratios, a neutral condition and a reverse drive ratio in a planetary transmission. The selector valve (128) has a line pressure chamber (152) formed thereon which remains in fluid communication with a line feed passage in the valve body (148) throughout the "H" pattern. This line pressure chamber (152) is selectively alignable with respective clutch and brake apply passages formed in the valve body (148) to control the flow of pressurised oil for the engagement of respective clutches and brakes. A plurality of exhaust chambers (162,164) formed therein are also selectively connectable with the clutch and brake apply passages to control disengagement of the clutches and brakes not required for the selected drive condition. <IMAGE>