US 12,345,255 B2
Pump device
Naoto Onoda, Sunto-gun (JP); Takahiro Shiina, Numazu (JP); and Hideaki Komada, Numazu (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Apr. 13, 2023, as Appl. No. 18/134,106.
Claims priority of application No. 2022-073763 (JP), filed on Apr. 27, 2022.
Prior Publication US 2023/0349377 A1, Nov. 2, 2023
Int. Cl. F04C 11/00 (2006.01); F04C 2/10 (2006.01)
CPC F04C 11/001 (2013.01) [F04C 2/10 (2013.01); F04C 2210/206 (2013.01); F04C 2240/40 (2013.01); F04C 2270/051 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A pump device that supplies a liquid reserved in a reservoir to a gear mechanism and a rotary electric machine, the pump device comprising:
a first pump whose suction port and discharge port are not switched between a forward rotation and a reverse rotation;
a second pump whose suction port and discharge port are switched between at between a forward rotation and a reverse rotation;
a motor that optionally switches a rotation direction of the motor;
a shaft member that is rotated by a driving force from the motor;
a control device that is configured to control at least a rotation direction of the motor; and
a temperature detection sensor provided in the rotary electric machine,
wherein the first pump and the second pump are provided on the shaft member, the first pump is connected to the gear mechanism, and the second pump is connected to the rotary electric machine, and
based on a detection result of the temperature detection sensor, the control device is configured to:
when a temperature of the rotary electric machine is equal to or greater than a threshold value, rotate the motor in a forward direction to supply oil to both the gear mechanism and the rotary electric machine, and
when the temperature of the rotary electric machine is less than the threshold value, rotate the motor in a reverse direction to supply oil only to the gear mechanism and not supply oil to the rotary electric machine.