System and method generating an exotherm in an exhaust system
US10570840B2 · kind B2 · utility
1Cited by
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19Claims
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Key dates
| Filing date | Feb 8, 2018 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | May 3, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems for operating an engine to provide small amounts of energy to heat an aftertreatment device are described. In one example, fewer than the actual total number of engine cylinders are supplied with late post fuel injections (LPI) to heat an aftertreatment device without heating the aftertreatment device more than is desired. The engines fuel injectors may be operated at minimum fuel pulse widths to reduce fuel consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.