PUMPING DEVICE, ESPECIALLY AXIAL PISTON PUMP, FOR A WASTE HEAT RECOVERY APPARATUS IN A MOTOR VEHICLE

摘要

The invention relates to a pumping device (1), especially an axial piston pump, for a waste heat recovery apparatus, comprising a working chamber (3) which is delimited in part by a pump housing (4) and inside which a piston (2) is arranged so as to be able to move along an axial direction (A), further comprising a first fluid line (5) for introducing the fluid into the working chamber (3); the first fluid line (5) is fluidically connected to the working chamber (3) via a breakthrough (9) in the pump housing (4), at an end face (7) of the working chamber (3) lying across from the piston (2); a first valve element (10) is provided in the first fluid line (5) and/or in the working chamber (3), in the area of the breakthrough (9); the pumping device (1) also comprises a second fluid line (6) for discharging the fluid from the working chamber (3), said second fluid line (6) running into the working chamber (3) in the area of the second position of the piston (2); a second valve element (13) is provided in an area (12) in which the second fluid line (6) runs into the working chamber (3).