Integrated fuel catalyst monitor
US9932877B2 · kind B2 · utility
0Cited by
4References
18Claims
0Family size
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Inventors
Key dates
| Filing date | May 10, 2013 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Feb 2, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method is provided for monitoring an emission device coupled to an engine. In one example approach, the method comprises: following a deceleration fuel shut-off duration, indicating degradation of the emission device based on an amount of rich products required to cause a sensor to become richer than a threshold. The amount of rich products required may be correlated to an amount of oxygen stored in the emission device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.