Abstract: A motor vehicle transmission includes a torque converter and planetary gear arrangement. Clutches are provided for connecting the torque converter with the gear arrangement. The clutches are arranged so that the direct drive transmission gear can be engaged either through the torque converter or partially bypassing the torque converter.

Abstract: A pneumatic control system is disclosed for an automatic transmission for a vehicle of the type having a mechanical planetary gear train with hydraulically actuatable gear elements. A manual control valve dependent upon the position of the transmission gear select lever conveys a pressure medium, for actuating a gear shift element associated with the selected gear when said lever is moved to one of the forward gears of the transmission, through a pressure medium line connected between the manual control valve and the gear shift element. The control system comprises a main control valve dependent upon the position of the accelerator pedal for exhausting the fluid in the gear shift element for disengaging the gear shift element in operating states of the vehicle at least when the vehicle is stationary, the transmission gear select lever is moved to the drive position (D), and the accelerator pedal is released.

Abstract: An automatic transmission for a motor vehicle of the type having a mechanical planetary gear train with hydraulically actuatable gear shift elements has a gear select lever having a plurality of selectable forward drive positions, including automatic forward drive (D). A manual control valve, responsive to the position of the select lever, supplies a first pressurized hydraulic fluid to a selected gear shift element, e.g. a forward gear clutch, when the lever is in one of said forward drive positions. A control system which selectively interrupts the supply of fluid to the selected element comprises a main control valve, and a second fluid pressure acting on the main control valve to connect the supply of the first fluid to the gear shift element for engaging the element.

Abstract: A motor vehicle hydrodynamic transmission is provided with a torque converter and a planetary gear train. In order to provide a compact transmission arrangement, the stator of the torque converter is connected to the planetary gear carrier by means of a freewheel, and the planetary gear carrier is connected to the housing by another freewheel. The planetary gear is also connected to the housing by a controllable brake. The brake and freewheel connecting the carrier to the housing are arranged radially outward from the planetary gear train. The second sun gear of the planetary gear train and the second brake, which acts on the second sun gear, are arranged on the side of the planetary gear train facing away from the torque converter. The output of the planetary gear train is a pinion, which is connected to the inertial gear and located between the torque converter and the planetary gear train.

Abstract: A .[.pneumatic.]. .Iadd.hydraulic .Iaddend.control system is disclosed for an automatic transmission for a vehicle of the type having a mechanical planetary gear train with hydraulically actuatable gear elements. A manual control valve dependent upon the position of the transmission gear select lever conveys a pressure medium, for actuating a gear shift element associated with the selected gear when said lever is moved to one of the forward gears of the transmission, through a pressure medium line connected between the manual control valve and the gear shift element. The control system comprises a main control valve dependent upon the position of the accelerator pedal for exhausting the fluid in the gear shift element for disengaging the gear shift element in operating states of the vehicle at least when the vehicle is stationary, the transmission gear select lever is moved to the drive position (D), and the accelerator pedal is released.