Title:
COOLING DEVICE FOR ENGINE
Document Type and Number:
WIPO Patent Application WO/2012/096140
Kind Code:
A1
Abstract:
An oil jet device for cooling a piston is characterized in that the device comprises: an oil cooler (4) provided upstream of an oil ejection nozzle (8); an oil pump (5) provided upstream of the oil cooler (4); a first switching and adjusting valve (6) provided between the oil ejection nozzle (8) and the oil cooler (4) and adjusting the ratio at which cooling oil from the oil cooler (4) is distributed to the oil ejection nozzle (8) side and to the oil pan side; and a control unit having an oil amount adjusting map (41) for switching the first switching and adjusting valve (6) on the basis of a piston temperature calculating map (20) for calculating the temperature of a piston (1) from values respectively detected by a cooling water temperature sensor (35), a rotational speed sensor (36), and a load sensor (37).
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Inventors:
TAKEMOTO DAISUKE (JP)
Application Number:
PCT/JP2011/080499
Publication Date:
July 19, 2012
Filing Date:
December 28, 2011
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
TAKEMOTO DAISUKE (JP)
TAKEMOTO DAISUKE (JP)
International Classes:
F01P7/16; F01M1/06; F01M1/08; F01M1/16; F01M5/00
Foreign References:
| JPS6334322U | 1988-03-05 | |||
| JP2003148121A | 2003-05-21 | |||
| JP2005105886A | 2005-04-21 | |||
| JP2006029127A | 2006-02-02 |
Other References:
See also references of EP 2664762A4
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. (JP)
Patent business corporation Takahashi 松本 & partners (JP)
Patent business corporation Takahashi 松本 & partners (JP)
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Claims: