A driving apparatus includes a rotary electric machine configured to output rotation in a first direction and rotation in a second direction, a fluid pump and an actuator that are configured to operate with the output of the rotary electric machine as power, and a one-way clutch provided between the rotary electric machine and the actuator. The fluid pump is configured to intake and discharge a fluid when at least the rotation in the first direction is input. The one-way clutch is configured to block the rotation in the first direction and transmit the rotation in the second direction. The actuator includes a shift drum configured to rotate in one direction in response to the rotation in the second direction transmitted via the one-way clutch, and a shift fork engaged with the shift drum. The shift fork has a plurality of operating states including at least a first state and a second state, and alternately transitions between the first state and the second state in response to the rotation of the shift drum in the one direction.

A driving apparatus includes a rotary electric machine configured to output rotation in a first direction and rotation in a second direction, a fluid pump and an actuator that are configured to operate with the output of the rotary electric machine as power, and a one-way clutch provided between the rotary electric machine and the actuator. The fluid pump is configured to intake and discharge a fluid when at least the rotation in the first direction is input. The one-way clutch is configured to block the rotation in the first direction and transmit the rotation in the second direction. The actuator includes a shift drum configured to rotate in one direction in response to the rotation in the second direction transmitted via the one-way clutch, and a shift fork engaged with the shift drum. The shift fork has a plurality of operating states including at least a first state and a second state, and alternately transitions between the first state and the second state in response to the rotation of the shift drum in the one direction.

A transmission shifting and parking structure includes a rotary drive mechanism, a shifting rocker arm, a shift fork, a shifting actuator, a driving guide shaft, a parking rocker arm, a parking push rod assembly, and a parking actuator; the rotary drive mechanism drives the driving guide shaft to rotate; one end of the shifting rocker arm and one end of the parking rocker arm are fixed on the driving guide shaft and rotate with the driving guide shaft; the other end of the shifting rocker arm is provided with a cylindrical pin, as the shifting rocker arm rotates, the cylindrical pin moves along a shift fork typed groove provided on the shift fork and drives the shift fork to move; the shift fork typed groove is provided with multiple positions corresponding to gear positions; the other end of the parking rocker arm is hinged with the parking push rod assembly.

A transmission shifting and parking structure includes a rotary drive mechanism, a shifting rocker arm, a shift fork, a shifting actuator, a driving guide shaft, a parking rocker arm, a parking push rod assembly, and a parking actuator; the rotary drive mechanism drives the driving guide shaft to rotate; one end of the shifting rocker arm and one end of the parking rocker arm are fixed on the driving guide shaft and rotate with the driving guide shaft; the other end of the shifting rocker arm is provided with a cylindrical pin, as the shifting rocker arm rotates, the cylindrical pin moves along a shift fork typed groove provided on the shift fork and drives the shift fork to move; the shift fork typed groove is provided with multiple positions corresponding to gear positions; the other end of the parking rocker arm is hinged with the parking push rod assembly.

A multi-directional compliant shifting mechanism for a multi-speed power tool may couple a movable selector to a power transmission system of the tool, for selecting an operational speed of the multi-speed power tool. The complaint shifting mechanism may provide shifting compliance in a first direction in response to movement of the selector in a first direction, and may provide shifting compliance in a second direction in response to movement of the selector in a second direction. In one example, this multi-directional shifting compliance may be provided by interaction of the selector with a camming surface, in combination with a single compression spring. In another example, this multi-directional shifting compliance may be provided by first and second springs, selectively acting to provide compliance in the first and second directions.

A multi-directional compliant shifting mechanism for a multi-speed power tool may couple a movable selector to a power transmission system of the tool, for selecting an operational speed of the multi-speed power tool. The complaint shifting mechanism may provide shifting compliance in a first direction in response to movement of the selector in a first direction, and may provide shifting compliance in a second direction in response to movement of the selector in a second direction. In one example, this multi-directional shifting compliance may be provided by interaction of the selector with a camming surface, in combination with a single compression spring. In another example, this multi-directional shifting compliance may be provided by first and second springs, selectively acting to provide compliance in the first and second directions.

A vehicle powertrain hydraulic system (10) includes a clutch (12), a piston (62) disposed in a cylinder (60) to drive a shift selector (14), a pump (82) in fluid communication with a fluid supply (86) to pressurize fluid, and first and second fluid pressure lines (91, 92) from the pump to first and second sides of the piston. A third fluid pressure line (93) may extend to the clutch from the cylinder in a location between the first and second sides of the piston, such that the piston also may be a valve to control fluid flow to the clutch. The pump may be reversible and coupled to an electric motor (80), and a centrifugal regulator (84) may be coupled to the motor and in fluid communication with the first and second pump pressure lines to regulate fluid pressure therein. A related operational method is also disclosed.

A vehicle powertrain hydraulic system (10) includes a clutch (12), a piston (62) disposed in a cylinder (60) to drive a shift selector (14), a pump (82) in fluid communication with a fluid supply (86) to pressurize fluid, and first and second fluid pressure lines (91, 92) from the pump to first and second sides of the piston. A third fluid pressure line (93) may extend to the clutch from the cylinder in a location between the first and second sides of the piston, such that the piston also may be a valve to control fluid flow to the clutch. The pump may be reversible and coupled to an electric motor (80), and a centrifugal regulator (84) may be coupled to the motor and in fluid communication with the first and second pump pressure lines to regulate fluid pressure therein. A related operational method is also disclosed.

A method for operating a motor vehicle having a transmission (1), the method including closing a first number of shift elements and opening a second number of shift elements in each selected, force locking gear ratio of the transmission (1); closing one shift element less, and therefore opening one shift element more than in a selected, force locking gear ratio when a transmission (1) is not force locking in the sailing mode; adjusting the respectively closed and opened shift elements as a function of at least one operating condition of the motor vehicle in the sailing mode; and checking, at least on the basis of the rotational speed of the transmission input shaft (2), whether a previously closed, positively locking shift element (A, F) to be opened is actually opened in the sailing mode during adjusting of the respectively closed and opened shift elements.

A drum cam is connected to a first annular member in a ball cam provided on a rear wheel-side output shaft. Furthermore, linear motion of a second annular member in the ball cam provided on the rear wheel-side output shaft is transmitted to a front wheel-driving clutch via a first transmission mechanism.