Apparatus for controlling the amount of secondary air fed into an internal combustion engine
US4224911A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1979 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | May 10, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for controlling the amount of secondary air fed into an internal combustion engine which includes means for controlling the response speed of a secondary air flow control means in accordance with an electrical signal. This signal is generated by integrating the value of an intake air amount signal, which is generated by multiplying the rotational speed of the engine and the load of the engine, in an interval direction determined by an equivalent air-fuel ratio condition of the engine. Thus, the equivalent air-fuel ratio can be controlled with a response speed corresponding to the amount of the flow of the exhaust gas. Furthermore, excessive control of the equivalent air-fuel ratio can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.