Hydraulic control valve system for a multigear, automatic, hydrokinetic-mechanical gearbox for motor vehicles

摘要

In a hydraulic control valve system for a multigear, automatic, hydrokinetic-mechanical gearbox for motor vehicles with a torque converter with a lockup clutch and a gearbox with three planetary wheel systems, which provides four forwards gears, one of which forms an overdrive, a line pressure LINE being produced by a pressure medium pump by way of an oil pressure regulating valve and an oil pressure booster valve as a function of a throttle pressure valve supplying pressure signals corresponding to the torque requirement and of a centrifugal governor valve supplying pressure signals corresponding to the speed of travel, which line pressure is fed by way of a manual selector valve to a plurality of control valves, which in addition are influenced by the pressure signals of the throttle pressure valve and of the centrifugal governor valve, in order to bring about the automatic gear shifts, a 3-4 control valve being provided, the valve body of which has three control flanges and is loaded by way of a spring against the force of the centrifugal governor pressure GOV and a modulator valve acting on the valve body of the 3-4 control valve, the valve body of which has a control flange and is supported by way of a spring on the valve body of the 3-4 control valve, increased throttle pressure or throttle pressure TVB/TV acting on the control flange, in order to ... Original abstract incomplete.