FIELD: engines and pumps.
SUBSTANCE: invention relates to pumping devices with two stages for drivelines. Pumping device (10) includes stage (11) of low pressure of a pump and stage (12) of high pressure of a pump. The first stage (11) of the pump supplies fluid medium under low pressure to system (13) of lubrication/cooling and to an inlet hole of the second stage (12) of the ump, which supplies fluid medium under high pressure to hydraulic control system (14). Fluid medium from both systems (13 and 14) is returned by means of tank (16) and filter (15) to the first stage (11) of the pump.
EFFECT: improvement of efficiency of the device.
14 cl, 1 dwg
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