Engine friction characterization
US6188951A · kind A · utility
8Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Sep 23, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/1006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for characterizing the friction losses within an internal combustion engine includes determining a start-up friction term, a mechanical friction term, a pumping loss term, and an adapted friction term to compensate for long-term frictional changes in the engine. A total engine frictional loss is determined by summing the start-up friction term, the mechanical friction term, the pumping loss term and the adapted friction term.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.