Exhaust gas purifier for internal combustion engines
US6711892B2 · kind B2 · utility
28Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Nov 18, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust passage (20) of an internal-combustion engine (1) is provided with an exhaust emission control unit (40) capable of reducing harmful substances in exhaust gas under a given exhaust pressure condition and an exhaust sensor (22) for detecting the concentration of a specific exhaust component (H2, O2) in the exhaust gas, and a performance lowering identifying unit identifies lowering of the performance of the exhaust emission control (40) by detecting a failure to fulfill the given exhaust pressure condition in accordance with the output of the exhaust sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.