Vehicle including shutter device for adjusting temperature of coolant water of engine
US9827845B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2014 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Dec 11, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P7/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A grille shutter is a device configured to adjust a temperature of coolant water of an engine by adjusting an amount of outside air introduced into a radiator of the engine. An ECU performs a failure diagnosis for the engine based on a temperature of coolant water of the engine. When the grille shutter is immovable in an opened state of the grille shutter regardless of an operating command to the grille shutter, the ECU renders the failure diagnosis process for the thermostat valve not to be executed. As a result, an incorrect operation of various controls executed based on a temperature of coolant water of the engine can be suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.