Engine cooling system diagnostic for applications with two coolant sensors
US8046150B2 · kind B2 · utility
7Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2009 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Apr 14, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2060/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A temperature comparison module generates a temperature difference between an engine coolant temperature and a radiator coolant temperature. An energy determination module determines an energy value corresponding to heat energy generated by an engine. The heat energy increases at least one of the engine coolant temperature and the radiator coolant temperature. A diagnostic module generates a comparison of the temperature difference and the energy value and determines a status of a thermostat associated with the engine based on the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.