Circuit means and apparatus for controlling the air-fuel ratio supplied to a combustion engine
US4150645A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1977 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Aug 19, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M7/28
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A carbureting type fuel metering apparatus has an induction passage into which fuel is fed by several metering systems among which are a main fuel metering system and an idle fuel metering system, as generally known in the art; electrical circuit means responsive to signals produced by associated engine exhaust gas analyzing means sensitive to selected constituents of such exhaust gas and also responsive to other selected indicia of vehicle and/or engine operating conditions, creates feedback signal means which through associated transducer means become effective for controllably modulating the metering characteristics of the main fuel metering system and the idle fuel metering system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.