Method for controlling regeneration within an after-treatment component of a compression-ignition engine
US8806852B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2012 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Oct 7, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for controlling regeneration within an after-treatment component of a compression-ignition engine includes receiving a value of a parameter associated with an exhaust stream passing through the after-treatment component and determining a rate of change of the parameter. A filtered parameter value is calculated based on the value of the parameter, the rate of change of the parameter, and a predetermined filtering relationship for the parameter. Accumulated particulate matter in the after-treatment component is estimated based, at least, on a soot accumulation model and the filtered parameter value. The estimate of accumulated particulate matter in the after-treatment component is compared to a predetermined threshold associated with the after-treatment component, and a remedial action is initiated when the estimate of accumulated particulate matter in the after-treatment component exceeds the predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.