A two-speed drive unit of an electric vehicle includes a planetary gear set transmission having multiple elements including a first element, a second element and a third element. A motor generator unit supplies a motive force to the planetary gear set transmission. A first stage gear transfers the motive force to the planetary gear set transmission from the motor generator unit. A second stage gear is connected through the second element to a final drive. A first torque transmitting device defining a selectable one-way clutch (SOWC) is connected to the third element.

A power shiftable multi-stage transmission of a planetary design and disposed between an input drive shaft and an output shaft for a vehicle. The multi-stage transmission has two parallel shaft trains, six shift elements, at least two spur gear stages and three planetary gear sets. Each of the planetary gear sets has a sun gear, a ring gear and a planet carrier combined in a carrier having multiple planetary gears. The two shaft trains may be connected to one another via the at least two spur gear stages. Different transmission ratios, between the input drive shaft and the output shaft, may be achieved by selective engagement of the six shift elements such that a plurality of forward gears, at least nine forward gears, and at least one reverse gear, may be implemented.

A band brake actuator is for actuating a band brake on a planetary gearset. The band brake actuator comprises a actuator shaft; an output finger; and a linkage assembly. The linkage assembly connects the actuator shaft to the output finger such that rotation of the actuator shaft in a first rotation direction causes the output finger to engage the band brake on the planetary gearset, and such that rotation of the actuator shaft in an opposite, second rotation direction causes the output finger to disengage the band brake from the planetary gearset. Engagement of the band brake and the planetary gearset shifts the planetary gearset into one of a forward and a reverse gear and wherein disengagement of the band brake and the planetary gearset shifts the planetary gearset into a neutral gear.

Disclosed is an 8-speed gearbox for a dual clutch transmission, with a particular gear arrangement of the gears on the countershaft, wherein the speed or reverse gear of a gear pair that is a permanently rotationally and axially fixed gear is the radially smaller of the gear pair. One or two cluster gears may be provided, each cluster gear having two gears axially paired attached to the countershaft by a shrink fit connection.

Manual dual clutch power transmission unit 10 for a vehicle (tractor, constructional vehicle and the like), which comprises a synchro-shuttle transmission unit 10S (forward/reverse drive transmission), a hydro-mechanical operated a dual clutch unit 10D, a multi-speed transmission unit 10T (8 speed transmission unit), a range transmission unit 10R (3 ranges—low range, medium range and high range), a hydro-mechanical transmission control mechanism 100 which controls shifting and selection of gears (odd gear and/or even gear) and corresponding clutches (odd clutch and/or even clutch) respectively, and an auxiliary transmission actuation mechanism 200 which actuates the power transmission unit 10 when at least one of the hydraulic dual clutch unit 10D of the power transmission unit 10 and a hydraulic system of the vehicle is not functioning, wherein the transmission control mechanism 100 for the multi-speed transmission unit 10T is provided with Z-gate sequential gear shift pattern.

Disclosed is a method for operating a multi-speed vehicle transmission having a plurality of shift elements (A, B, C, D, E) for engaging the gears of the vehicle transmission. The method includes decoupling between an input (AN) and an output (AB) of the vehicle transmission in a neutral gear, and coupling the input (AN) and the output (AB) of the vehicle transmission in a drive gear for propelling the vehicle by closing at least one shift element (B). At least one transmission state is determined when the neutral gear is engaged, where a shift element (D) for a reverse gear of the vehicle transmission is closed at least partially if the transmission is in a state with increased drag losses when the neutral gear is engaged.

A powershift transmission for a work vehicle includes a speed section. Within the speed section, a speed C clutch is engageable to transfer rotational power from a speed input shaft to a speed countershaft via first and second speed gears, a speed A clutch is engageable to transfer rotational power from the speed input shaft to the speed countershaft via third and fourth speed gears, and a speed B clutch is engageable to transfer rotational power from the speed input shaft to the speed countershaft via fifth and sixth speed gears. A first gear ratio between the first and second speed gears is greater than a second gear ratio between the third and fourth speed gears and a third gear ratio between the fifth and sixth speed gears.

A method is disclosed for operating a multi-gear vehicle transmission in a motor vehicle during a coasting phase. The coasting phase includes an overrun phase with a driving gear engaged and a freewheeling phase with the neutral gear engaged. It is determined whether the motor vehicle is in the overrun phase of the coasting phase, whether a condition for a transition to the freewheeling phase of the coasting phase is fulfilled, and whether a transmission condition with elevated drag losses exists. If the motor vehicle is in the overrun phase of the coasting phase, if the condition for transition to the freewheeling phase is fulfilled, and if a transmission condition with elevated drag losses exists, then at least one further shifting element (D, E) is closed in addition to the shifting elements (A, B, C) of the driving gear, which are closed during the overrun phase of the motor vehicle.

Disclosed is a method for operating a multi-gear vehicle transmission having a plurality of shifting elements (A, B, C, D, E) for engaging gears of the vehicle transmission. In a neutral gear, in which some of the shifting elements (A, B) are already actuated, a transmission input (1) is decoupled from a transmission output (2) of the vehicle transmission. In a driving gear the transmission input (1) is coupled to the transmission output (2) of the vehicle transmission by closing the shifting elements (A, B, C, D, E) associated with the driving gear, in order to propel the vehicle. With the neutral gear engaged a transmission condition is determined, and if a transmission condition with elevated drag losses exists, then in addition to the shifting elements (A, B) actuated in the neutral gear a shifting element (D) associated with a reversing gear of the vehicle transmission is also closed.

A transmission includes a drive element, a first output element, a primary transmission unit, a reversing unit, and an intermediate gearbox. At least two of the at least nine shifting elements of the primary transmission unit, at least one of the at least two shifting elements of the reversing unit, and at least one of the at least two shifting elements of the intermediate gearbox are activatable in combinations of at least four shifting elements so as to establish at least twenty-eight forward gears between the drive element and the first output element.