Pumping device for a transmission and transmission comprising such a pumping device

In order to enable efficient operation and reliable heat dissipation in a transmission, a pumping device (10) for lowering the internal pressure in a transmission (100) is equipped with a suction line(18), which leads from a suction point (20) on a connection side (14) to a discharge point (22) on a discharge side (16); a pump (24) for generating negative pressure at the suction point (20); a pump drive (26) for driving the pump (24); an oil separator (28) connected upstream or downstream of the pump (24) in the suction line (18) that separates oil contained in the suction flow and return theoil via a return line (30) to the connection side (14); and a check valve connected downstream, preferably directly downstream, of the pump (24). A transmission (100) with such a pumping device (10),a use of a pumping device (10) and a method for reducing power losses in a transmission (100) are disclosed. 为了实现传动装置的有效运行和可靠的散热，提供一种泵送装置(10)，用于降低传动装置(100)的内部压力，所述泵送装置(10)配备有抽吸管路(18)，其从连接侧(14)的抽吸点(20)引导至排出侧(16)的排出点(22)；泵(24)，其