Apparatus for controlling the amount of secondary air fed into an internal combustion engine
US4271667A · kind A · utility
9Cited by
8References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 14, 1978 |
| Grant date | Jun 9, 1981 |
| Priority date | — |
| Expiry date | Nov 14, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N3/227
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An apparatus for controlling the amount of secondary air fed into an internal combustion engine includes means for controlling the response speed of a secondary air flow control means in accordance with the amount of exhaust gas emitted from the engine. Thus, the equivalent air-fuel ratio can be correctly controlled, without delay, in response to changes in the operating condition of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.