Invention Grant
- Patent Title: Heat-generating portion cooling structure of vehicle drive apparatus
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Application No.: US13057875Application Date: 2010-03-31
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Publication No.: US08278788B2Publication Date: 2012-10-02
- Inventor: Koji Hayashi , Makoto Tomita , Shinichi Kojima , Ryuichi Hasegawa , Takahiro Miki
- Applicant: Koji Hayashi , Makoto Tomita , Shinichi Kojima , Ryuichi Hasegawa , Takahiro Miki
- Applicant Address: JP Toyota
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota
- Agency: Oliff & Berridge, PLC
- Priority: JP2009-093503 20090408
- International Application: PCT/JP2010/002368 WO 20100331
- International Announcement: WO2010/116689 WO 20101014
- Main IPC: H02K9/00
- IPC: H02K9/00

Abstract:
A heat-generating portion cooling structure of vehicle drive apparatus that sufficiently supplies cooling oil to heat-generating portions to enhance efficiency of the vehicle drive apparatus when the heat-generating portions generate maximum heat includes drawing means for drawing oil in a case into a catch tank, and an oil circulation passage for circulating the oil through the catch tank while supplying the oil to first and second heat-generating portions. The oil circulation passage includes a first passage for the oil to flow to the first heat-generating portion when the oil surface in the catch tank is at a first height and a second passage for the oil to flow to the second heat-generating portion when the oil surface is at a second height lower than the first height, and more amount of oil flows to the second heat-generating portion than to the first heat-generating portion when the oil surface is low.
Public/Granted literature
- US08456045B2 Heat-generating portion cooling structure of vehicle drive apparatus Public/Granted day:2013-06-04
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