Exhaust gas oxygen concentration control system and method
US8443591B2 · kind B2 · utility
1Cited by
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24Claims
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Key dates
| Filing date | Nov 10, 2009 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Nov 1, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine control system comprises an oxygen comparison module and a regeneration control module. The oxygen comparison module compares an oxygen concentration of an exhaust gas of an engine to an oxygen threshold. A regeneration control module initiates regeneration of a particulate filter and controls regeneration based on the oxygen comparison and at least one of a particulate filter load, a particulate filter temperature, and a speed of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.