Particulate filter device monitoring system for an internal combustion engine
US9366172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2013 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Sep 30, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/26
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A particulate filter device monitoring system for an internal combustion engine includes a particulate accumulation register configured to store an amount of particulate in a particulate filter. The particulate accumulation register includes a particulate accumulation trigger zone having a power limiting mode trigger. A power limiting mode trigger module is configured to limit output power of the internal combustion engine when the amount of particulate accumulation reaches the power limiting mode trigger. A particulate accumulation model module includes a particulate accumulation model configured to calculate changes in particulate accumulation in the particulate accumulation register at a first sampling rate when particulate accumulation is outside the particulate accumulation trigger zone, and at a second sampling rate when particulate accumulation is within the particulate accumulation trigger zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.