Diesel particulate filter soot permeability virtual sensors
US8209962B2 · kind B2 · utility
6Cited by
16References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2005 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Oct 1, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system and method for controlling an internal combustion engine senses differential pressure across the diesel particulate filter to monitor at least one of soot cake permeability and filter wall permeability as a function of exhaust temperature and mass flow velocity. The system and method preferably respond to both porous wall and soot cake permeabilities to determine when the soot level matches a threshold at which an operator may be warned, or at which a remedial operation may be triggered, or at which a more protective action taken by the engine control module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.