System and method for inferring engine oil temperature at startup
US6393357B1 · kind B1 · utility
16Cited by
10References
22Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 17, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Jul 17, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M5/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Systems and methods for determining engine oil temperature without an oil temperature sensor infer the oil temperature at engine start based on the calculated temperature at power down and various other parameters which may include engine coolant temperature, soak time, ambient temperature, and whether an engine block heater has been used. The invention provides a more accurate determination of engine oil temperature to allow more precise engine control particularly during cranking and during the first few minutes of engine operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.