Cooling device for internal combustion engine and control method for cooling device
US9816429B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2014 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Sep 29, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2037/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a cooling device and a control method therefor. This cooling device includes: a first cooling liquid line routed by way of a cylinder head and a radiator; a second cooling liquid line routed by way of a cylinder block while bypassing the radiator; a third cooling liquid line routed by way of the cylinder head and a heater core while bypassing the radiator; a flow rate control valve for distributing cooling water to the cooling liquid lines; and mechanical and electric water pumps. A control unit controls the flow rate control valve according to the temperatures of the cylinder head and block, during engine operation, and causes the electric water pump to operate while controlling the flow rate control valve according to the temperature of the cylinder head, and whether or not heat exchange in the heater core is requested, during temporary engine stop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.