Hydraulic system of a transmission with a plurality of clutches and control method with hydraulic valves for a plurality of clutches and transmissions, which offer an increased operational safety

摘要

Transmission (1) for a motor vehicle (3),the form of a having a plurality of sliding sleeves (5) is formed with a manual transmission and a plurality of clutches,at least one first clutch (7) with a first hydraulic cylinder (302) and at least a second clutch (9) with a second hydraulic cylinder (304), comprehensive double clutch device (11) cooperates,with the double clutch device (11) a first gear section (13) and a second gear section (15) of the transmission can be influenced and each gear section (13, 15) of control elements (216) with two sides, hydraulically drivable shifting actuators (202, 204, 206, 208) for moving the sliding sleeves (5) has,in each case two shifting actuators (202 and 204; 206 and 208) a split selection valve (220, 220 '', 220 ", 220"''; 222, 222 '', 222 ", 222"'') are associated with,characterized in thatin a first position of a sleeve selection valve (220a, 220 ''a, 220 "a, 220"'' a; 222a, 222 ''a, 222 "a, 222''" a) two fluid flow paths (224, 226) for the application of a switching actuator (202, 204, 206, 208) with pressure oil a first pulse (202 and 204; 206 or 208), and two ways to connection to a pressure oil sump (102) a second pulse (204 or 202; 208 or 206) are assigned, and in a second position of the sockets selection valve (220b, 220 ''b, 220 "b, 220"'', b; 222b, 222 ''b, 222 "b, 222''" b) the association is reversed.