Forced regeneration of a diesel particulate filter
US6829890B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2002 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Aug 13, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine control system (22) of a diesel engine (20) that powers a motor vehicle processes data in execution of a strategy (FIG. 4) to provide control of both timing and duration of forced regeneration of a diesel particulate filter (42). The overall strategy is a hybrid of model-based and closed-loop control strategies. Redundant elements of the strategy (FIG. 6) determine when forced regeneration is called for. Forced regeneration is initiated by retarding the timing of the start of main fuel injection (100). Fueling is then adjusted (98) both to enhance catalytic action and to make the process transparent to a driver of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.