VEHICLE HYDRAULIC TRANSMISSION Russian patent published in 2002 - IPC

FIELD: transport engineering. SUBSTANCE: proposed hydraulic transmission of vehicle has hydraulic torque converter, clutch and stepped gearbox. Hydraulic torque converter is provided with interlock friction clutch and is controlled from working space of torque converter, and interlock friction clutch is controlled from space of interlock clutch selectively connected with pump by hydraulic distributor. Hydraulic distributor is controlled by two-position electromagnet whose winding is connected with electric output of automatic device through normally-closed switching circuit of relay whose control circuit is connected with clutch transducer. In other design version of hydraulic transmission change-over switching circuit of relay is used, and normally-closed contact of relay controls two-position electromagnet, and normally-open contact of relay controls vehicle engine fuel supply interlock device. EFFECT: reduced power and slipping of clutch at selection of gears in gearbox on the run. 9 cl, 4 dwg