Title:
COOLING DEVICE FOR VEHICULAR INTERNAL COMBUSTION ENGINE, AND METHOD FOR CONTROLLING TEMPERATURE OF HYDRAULIC FLUID FOR AUTOMATIC TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2017/119454
Kind Code:
A1
Abstract:
In a cooling device for a vehicular internal combustion engine and a method for controlling the temperature of a hydraulic fluid for an automatic transmission according to the invention of the present application, when the temperature of cooling water at an outlet of the internal combustion engine is lower than a threshold value T1, a thermostat causes the cooling water having passed through the internal combustion engine to bypass a radiator and flow into a warmer function-equipped oil cooler of the automatic transmission, and, when the temperature of cooling water at the outlet of the internal combustion engine becomes higher than the threshold value T1, the thermostat causes the cooling water having passed through the radiator to flow in to the warmer function-equipped oil cooler. Accordingly, ATF cooling performance is improved without impairing warm-up performance.
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Inventors:
MURAI ATSUSHI (JP)
SAKAGUCHI SHIGEYUKI (JP)
TOYAMA YUICHI (JP)
SAKAGUCHI SHIGEYUKI (JP)
TOYAMA YUICHI (JP)
Application Number:
PCT/JP2017/000161
Publication Date:
July 13, 2017
Filing Date:
January 05, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F01P7/16; F01P3/20; F01P5/12; F02D29/00; F16H57/04
Foreign References:
| JP2004232514A | 2004-08-19 | |||
| JP2014228042A | 2014-12-08 | |||
| US20150059665A1 | 2015-03-05 | |||
| US20130255605A1 | 2013-10-03 | |||
| JP2013044230A | 2013-03-04 | |||
| JP2006022491A | 2006-01-26 | |||
| JP2005256641A | 2005-09-22 |
Attorney, Agent or Firm:
OGAWA, Moriaki et al. (JP)
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