Title:
PISTON TEMPERATURE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2020/196155
Kind Code:
A1
Abstract:
This piston temperature control device for an internal combustion engine has a reduced number of valves, a minimal increase of friction loss in the internal combustion engine caused by a decrease in oil temperature, a minimal rise in pressure in a discharge port of an oil pump, and a minimal increase of driving force of the oil pump. A piston temperature control device (1) for an internal combustion engine has: an oil pump (10) provided with an intake port (11) through which oil is taken in from an oil pan (P), and a discharge port (12) that discharges the oil taken in through the intake port (11); a three-way valve (20) that switches between a flow channel (R1) that allows communication between the discharge port (12) and the intake port (11), and a flow channel (R2) that allows communication between the discharge port (12) and a piston oil jet (80) that sprays oil onto a piston; and a control unit (09) that controls the switching of the valve (20) in accordance with the temperature of the piston.
Inventors:
MITA TAKURO (JP)
Application Number:
PCT/JP2020/011971
Publication Date:
October 01, 2020
Filing Date:
March 18, 2020
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F01P7/16; F01M1/08; F01M1/16; F01M5/00; F01P3/08
Foreign References:
| JP2012145021A | 2012-08-02 | |||
| JP2003343231A | 2003-12-03 | |||
| JP2011127571A | 2011-06-30 | |||
| JP2017198076A | 2017-11-02 | |||
| JP2018131941A | 2018-08-23 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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