Drive device that can effectively cool two electric motors
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYusuke Suzuki, Koichi Okuda, Atsushi Tabata
Life of this patent
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Abstract
A drive device includes: a first electric motor that drives a left wheel of a vehicle; a second electric motor that drives a right wheel of the vehicle; a first oil pump that supplies oil to the first electric motor via a first oil supply passage; a second oil pump that supplies oil to the second electric motor via a second oil supply passage; a connecting channel that connects the first oil supply passage and the second oil supply passage; and a flow regulating device that is installed in the connecting channel and allows oil to flow in the connecting channel when one of the first oil pump and the second oil pump is abnormal.
Claims4
A drive device, comprising:
- a first electric motor configured to drive a left wheel of a vehicle;
- a second electric motor configured to drive a right wheel of the vehicle;
- a first oil pump configured to supply oil to the first electric motor via a first oil supply passage;
- a second oil pump configured to supply oil to the second electric motor via a second oil supply passage;
- a connecting channel connecting the first oil supply passage and the second oil supply passage;
- a flow regulating device installed in the connecting channel and configured to allow oil to flow in the connecting channel when one of the first oil pump and the second oil pump is abnormal;
- a first gear set configured to transmit a driving force of the first electric motor to the left wheel;
- a second gear set configured to transmit a driving force of the second electric motor to the right wheel;
- and
- a gear housing chamber that houses the first gear set and the second gear set, wherein
- the oil that has passed through the first electric motor flows into the gear housing chamber, and
- the oil that has passed through the second electric motor flows into the gear housing chamber.
Dependencies are inferred from the claim text.