Method for regeneration of diesel particulate filter in an exhaust aftertreatment system of an IC engine
US8615989B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2010 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jul 22, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for regenerating a DPF in an exhaust aftertreatment system includes the steps of: monitoring a temperature of exhaust associated with a DOC; retarding an injection of fuel into at least one combustion cylinder, and thereby intentionally causing a misfire in the at least one combustion cylinder, dependent on the monitoring step; increasing an outlet temperature of the exhaust from the DOC to a first threshold temperature; and oxidizing particulates within the DPF when the exhaust is at the increased temperature. The number and/or frequency of the misfires is controlled to provide the desired exhaust temperature at the DPF inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.