Engine glow plug diagnosis using crankshaft sensor data
US8150576B2 · kind B2 · utility
0Cited by
62References
8Claims
0Family size
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Key dates
| Filing date | Jun 25, 2007 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Nov 19, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1497
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A motor vehicle engine (10) has glow plugs (20) for aiding combustion of fuel in combustion chambers of the engine when the engine is cold and an ignition switch (24) is operated to crank the engine. An aberration in engine speed (36) is used to indicate an under- or non-performing glow plug. Data from sources other than the engine speed source (28), such as data related to engine fueling, is also processed by a processor (30) to exclude them as the cause of the aberration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.