Abstract: A motor vehicle transmission is disclosed. The transmission includes at least ten gear-selection pressure chambers which are provided for the selection of a plurality of transmission gears, at least two actuation valves, each of which is provided for setting at least one actuation pressure for the gear-selection pressure chambers, at least one first selection valve unit, at least one second selection valve unit, and at least one third selection valve unit which are provided for connecting the actuation valves to the gear-selection pressure chambers. The second selection valve unit is directly connected to four gear-selection pressure chambers in order to transmit actuation pressure and the third selection valve unit is directly connected to six other gear-selection pressure chambers and directly to the second selection valve unit in order to transmit actuation pressure.
Abstract: An actuation system for a drive unit of a motor vehicle includes a control unit which is assigned to the drive unit and which has a function level, a function monitoring level, and a power output stage for actuating the drive unit or actuators or sensors which are assigned to the drive unit. To relieve the function level, a data transmission device for outputting data to a data bus is arranged in the function monitoring level. The data transmission device can output a drive setpoint torque to the drive unit, to actuators or sensors which are assigned to it, or to a power output stage (9, 9?) of a separate, second drive unit.
Type:
Application
Filed:
August 6, 2007
Publication date:
August 26, 2010
Applicant:
Daimler
Inventors:
Detlef Fuchs, Lothar Rehm, Thomas Von Raumer