Method and arrangement for controlling the fuel for an internal combustion engine having a catalyzer
US5207056A · kind A · utility
16Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Jan 22, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2430/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The arrangement according to the invention permits the optimal control of the air/fuel ratio of an air/fuel mixture supplied to an internal combustion engine while considering the gas storage capability of a catalyzer. The degree of conversion of the catalyzer is dependent upon the oxygen content of the exhaust gas which is available. Since this degree of conversion is partially influenced by the oxygen given off by the catalyzer, a targeted enrichment or leaning of the air/fuel ratio can optimize the degree of conversion of the catalyzer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.