Methods and systems for a transmission are provided. In one example, the transmission includes an input shaft with a first pair of gears that reside thereon, a first clutch positioned between the first pair of gears and designed to selectively rotationally couple a selected gear in the first pair of gears to the input shaft, and a layshaft with a second pair of gears fixedly coupled thereto. The transmission further includes an output shaft with a third pair of gears that reside thereon and a second clutch positioned between the third pair of gears and designed to selectively rotationally couple a selected gear in the third pair of gears to the output shaft.

A shift transmission includes a first shaft, a second shaft arranged parallel to the first shaft, a gear group arranged at least partially on the first shaft, and a range group arranged at least partially on the second shaft. The gear group includes at least two gear units and the range group comprises at least three range units. Moreover, the gear group and the range group are configured such that a first and a second range unit in each case are shiftable with at least one gear unit indirectly by a third range unit.

A shift transmission includes a first shaft, a second shaft arranged parallel to the first shaft, a gear group arranged at least partially on the first shaft, and a range group arranged at least partially on the second shaft. The gear group includes at least two gear units and the range group comprises at least three range units. Moreover, the gear group and the range group are configured such that a first and a second range unit in each case are shiftable with at least one gear unit indirectly by a third range unit.

A vehicle drive apparatus includes an internal combustion engine, an electric-power-generating-motor gear train, a drive gear, a driven gear, a differential, a low clutch and a high clutch. The electric-power-generating-motor gear train and the driven gear are arranged on a first plane. The drive gear, the driven gear, and the differential are arranged on a second plane. The low clutch and the high clutch are arranged on a third plane.

A coupling arrangement for coupling members as a gear change coupling in a gear mechanism unit includes a first member and a second member. The first member has a coupling toothing system. At least one locking body arrangement is mounted pivotably on the second member. The locking body arrangement can be pivoted into a coupling position, in the case of which a driving section on the locking body arrangement engages into the coupling toothing system. The locking body arrangement can be pivoted into a release position, in the case of which the driving section of the locking body arrangement does not engage into the coupling toothing system. The locking body arrangement has a locking body carrier which is mounted pivotably on the second member, and has a locking body member which is mounted pivotably on the locking body carrier and on which the driving section is configured.

A drive axle of a vehicle includes an electric motor having an output shaft. At least one of a gear and a planetary gear set is operably connected to the output shaft of the electric motor. The at least one of the gear and the planetary gear set is operably connected to a differential configured to transfer torque to two axle half shafts of the vehicle. At least one clutch configured to facilitate a plurality of gear ratios between the electric motor and the differential.

A method for suppressing noises in a dual clutch transmission, which has two partial transmissions and each partial transmission has at least two synchronizers, for a motor vehicle. A respective shaft of the respective partial transmission is to be synchronized by the respective synchronizer with a respective idler, which is arranged on the respective shaft and is associated with the respective synchronizer, of the respective partial transmission. To suppress noises, one of the synchronizers of one of the partial transmissions is actuated, while the one partial transmission is activated, the other partial transmission is deactivated, and the idler which is associated with the other synchronizer of the one partial transmission is connected in a rotationally-fixed manner to the shaft of the one partial transmission.

A transmission system includes a transmission housing and a countershaft having no less than two gears, with the gears defining a plurality of gear ratios. The transmission system also includes a module housing, a first output shaft rotatably coupled to the countershaft, and a second output shaft rotatably coupled to the countershaft. The transmission system further includes a first clutch configured to selectively rotatably couple the first output shaft to the countershaft. The transmission system also includes a second clutch configured to selectively rotatably couple the second output shaft to the countershaft. The transmission system further includes an electric machine configured to deliver rotational power to at least one of the first and second output shafts to deliver rotational power to the countershaft. The countershaft is rotatably coupled to either of the first and second output shafts for all of the gear ratios.

A transmission system includes a transmission housing and a countershaft having no less than two gears, with the gears defining a plurality of gear ratios. The transmission system also includes a module housing, a first output shaft rotatably coupled to the countershaft, and a second output shaft rotatably coupled to the countershaft. The transmission system further includes a first clutch configured to selectively rotatably couple the first output shaft to the countershaft. The transmission system also includes a second clutch configured to selectively rotatably couple the second output shaft to the countershaft. The transmission system further includes an electric machine configured to deliver rotational power to at least one of the first and second output shafts to deliver rotational power to the countershaft. The countershaft is rotatably coupled to either of the first and second output shafts for all of the gear ratios.

In some implementations, a controller may cause a gearbox coupled to a rotor to shift between a first gear ratio and a second gear ratio one or more times. The controller may obtain a first set of position data that identifies respective first positions of a gear selector of the gearbox for each shift to the first gear ratio, and a second set of position data that identifies respective second positions of the gear selector of the gearbox for each shift to the second gear ratio. The controller may determine a first calibrated position of the gear selector for a shift to the first gear ratio based on the first set of position data and a second calibrated position of the gear selector for a shift to the second gear ratio based on the second set of position data.