Exhaust gas-purifying system for internal combustion engines
US5493857A · kind A · utility
9Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1995 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Feb 24, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust gas-purging system for an internal combustion engine includes a catalyst arranged in an exhaust passage of the engine, for purifying exhaust gases emitted from the engine. The system detects an engine operating condition and a catalyst temperature parameter indicative of the temperature of the catalyst. The supply of secondary air to the exhaust passage and the flow path cross-sectional area of the exhaust passage are controlled based on at least one of the operating condition of the engine and the catalyst temperature parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.