Title:
PUMP DEVICE AND POWER TRANSMISSION DEVICE, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2011/074360
Kind Code:
A1
Abstract:
Provided is a pump device wherein a circulation circuit is formed so that, while a mechanical oil pump (42) is operated, a switching valve (60) circulates operation oil from the mechanical oil pump (42) to an input port (62g), an output port (62h), a suction port (123a) of an electromagnetic valve (100), a suction check valve (130), a pump chamber (139), a discharge check valve (140), a discharge port (123b), an input port (62d) of the switching valve (60), and a drain port (62f) in this order. Thus, accumulation of air within the pump chamber (139) can be suppressed when the electromagnetic valve (100) functions as a pressure-adjusting valve instead of an electromagnetic pump. Thus, the electromagnetic valve (100) can be rapidly actuated when subsequently functioning as an electromagnetic pump.
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Inventors:
SHIMIZU TETSUYA (JP)
KATO KAZUHIKO (JP)
ISHIKAWA KAZUNORI (JP)
FUJII NORIOMI (JP)
KATO KAZUHIKO (JP)
ISHIKAWA KAZUNORI (JP)
FUJII NORIOMI (JP)
Application Number:
PCT/JP2010/070226
Publication Date:
June 23, 2011
Filing Date:
November 12, 2010
Export Citation:
Assignee:
AISIN AW CO (JP)
SHIMIZU TETSUYA (JP)
KATO KAZUHIKO (JP)
ISHIKAWA KAZUNORI (JP)
FUJII NORIOMI (JP)
SHIMIZU TETSUYA (JP)
KATO KAZUHIKO (JP)
ISHIKAWA KAZUNORI (JP)
FUJII NORIOMI (JP)
International Classes:
F04B9/00; F16H61/00; F16K31/06
Domestic Patent References:
| WO2009145176A1 | 2009-12-03 | |||
| WO2008155929A1 | 2008-12-24 |
Foreign References:
| JP2008025710A | 2008-02-07 | |||
| JP2007126974A | 2007-05-24 |
Attorney, Agent or Firm:
ITEC INTERNATIONAL PATENT FIRM (JP)
Patent business corporation Itec international patent firm (JP)
Patent business corporation Itec international patent firm (JP)
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