Transmission device with a hydraulic system comprising a transmission main pump apparatus

摘要

A transmission device (1) with a hydraulic system (4) comprising a main transmission pump device for supplying various transmission components with hydraulic fluid. The main transmission pump device is driven by torque applied to the transmission input shaft (2). A force flow between the transmission input shaft (2) and transmission output shaft (3) is produced by various hydraulically actuated transmission components. When the hydraulic system (4) is not supplied by the main transmission pump, the force flow is interrupted. The hydraulic system (4) has an auxiliary pump device (5) by virtue of which the hydraulic system (4) too can be supplied with hydraulic fluid. The auxiliary pump device (5) is driven by torque applied to the transmission output shaft (3) at least when the force flow is interrupted.

主权项

1. An automatic transmission (1) with a hydraulic system (4) comprising:
a main transmission pump device for supplying various transmission components with hydraulic fluid, which are driven by torque applied to an automatic transmission input shaft (2) such that a force flow, between the automatic transmission input shaft (2) and an automatic transmission output shaft (3), is produced by various hydraulically actuated transmission components which facilitate coupling of the automatic transmission input shaft (2) to the automatic transmission output shaft (3) for transferring the force flow through the automatic transmission, and, when the force flow supplied by the automatic transmission input shaft (2) is interrupted, the main transmission pump device is prevented from supplying hydraulic fluid to the hydraulic system (4), the hydraulic system (4) being formed with an auxiliary pump device (5) by which the hydraulic system (4) can also be supplied with hydraulic fluid, and the auxiliary pump device (5) being exclusively driven by a torque flowing from the automatic transmission output shaft (3) when a coupling device (6) is engaged.