Exhaust gas purification apparatus, internal combustion engine comprising the same, and particulate filter restoring method
US8091347B2 · kind B2 · utility
4Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2006 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Feb 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
In an embodiment of an exhaust gas purification apparatus, when an accumulation amount of particulate matter in a DPF (33) exceeds a predetermined amount and an exhaust gas temperature of an engine is lower than a restoration operable temperature, an intake air amount reducing operation is executed by an air intake throttling device (24) provided for an air intake pipe (21) of the engine, and a heating operation is executed by an electric heater (34) provided upstream from the DPF (33), thereby increasing the exhaust gas temperature to the restoration operable temperature to start a restoration operation of the DPF (33).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.