System and method for engine cylinder power diagnosis by cylinder(s) cut-off snap throttle engine acceleration tests
US6002980A · kind A · utility
13Cited by
26References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1997 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Nov 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for measuring individual cylinder power contribution by cutting out individual cylinders of a multi-cylinder engine and performing a snap-throttle test on the engine. Engine speed versus time data is collected and stored during each snap-throttle test. This data is then used to calculate the power contribution provided by each cylinder using various methods, such as a least squares analysis of the speed data or by an analysis of the kinetic energy of the test engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.