Air-fuel ratio adjusting device in an internal combustion engine having a carburetor
US3960118A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1974 |
| Grant date | Jun 1, 1976 |
| Priority date | — |
| Expiry date | May 15, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/82
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air-fuel ratio adjusting device in an internal combustion engine having a carburetor, comprising an oxygen sensor whereby oxygen concentration in the exhaust gas is detected and control means whereby the detected oxygen concentration is compared with the air-fuel ratio in the mixture and an output signal corresponding to the difference therebetween is produced, the output signal being applied to an electromagnetic fuel injection system provided in the carburetor. A regulator is provided between the main fuel supply system and the electromagnetic fuel injection system in the carburetor. Also, a cold start nozzle which is controlled on engine starting is provided in the intake system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.