Methods and systems for an exhaust gas treatment system
US9441524B2 · kind B2 · utility
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2References
11Claims
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Key dates
| Filing date | Apr 10, 2015 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Apr 21, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Various systems and methods are described for an engine system with an exhaust gas treatment system including a particulate filter. In one example method, accumulated hydrocarbons are removed from the exhaust gas treatment system by increasing an exhaust gas temperature to a first temperature responsive to a particulate filter regeneration request during extended cold idle operation. After a predetermined duration, the exhaust gas temperature is increased to a second, higher temperature to regenerate the particulate filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.