Fault diagnosis method, fault diagnosis system, and fault diagnosis device for engine
US9151238B2 · kind B2 · utility
1Cited by
7References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 24, 2012 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Oct 31, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In the present fault diagnosis method and the fault diagnosis system for an engine, an external diagnosis device: obtains continuous data on the incidences of misfire by misfiring cylinders from the vehicle's side with regard to the actually occurring misfire or past incidences of misfire; detects a misfire pattern, which is to be classified according to the presence of continuous incidences of misfire, on the basis of the continuous data; and narrows down a fault site in accordance with the misfire pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.