Low exhaust temperature electrically heated particulate matter filter system
US8112990B2 · kind B2 · utility
6Cited by
18References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Apr 23, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system includes a particulate matter (PM) filter, a sensor, a heating element, and a control module. The PM filter includes with an upstream end that receives exhaust gas, a downstream end and multiple zones. The sensor detects a temperature of the exhaust gas. The control module controls current to the heating element to convection heat one of the zones and initiate a regeneration process. The control module selectively increases current to the heating element relative to a reference regeneration current level when the temperature is less than a predetermined temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.