Title:
COOLING DEVICE OF INTERNAL-COMBUSTION ENGINE FOR VEHICLE, AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2016/143611
Kind Code:
A1
Abstract:
The present invention relates to a cooling device of an internal-combustion engine for a vehicle, and a control method. The cooling device of the present invention is provided with an electric water pump, a bypass line which bypasses a radiator, and a flow rate control valve which controls the flow rate of cooling water circulating through the bypass line. In a low ambient-temperature condition in which the ambient temperature is lower than a threshold, the flow rate of the cooling water circulating through the bypass line is increased compared with a high ambient-temperature condition in which the ambient temperature is higher than said threshold, thereby increasing the cooling water temperature compared with the high ambient-temperature condition, and the circulating flow rate of the cooling water is increased by increasing the discharge flow rate of the electric water pump compared with the high ambient-temperature condition.
Inventors:
MURAI ATSUSHI (JP)
SAKAGUCHI SHIGEYUKI (JP)
TOYAMA YUICHI (JP)
SAKAGUCHI SHIGEYUKI (JP)
TOYAMA YUICHI (JP)
Application Number:
PCT/JP2016/056288
Publication Date:
September 15, 2016
Filing Date:
March 01, 2016
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F01P7/16
Foreign References:
| JP2006112344A | 2006-04-27 | |||
| JP2014020229A | 2014-02-03 |
Attorney, Agent or Firm:
OGAWA, Moriaki et al. (JP)
Moriaki Ogawa (JP)
Moriaki Ogawa (JP)
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