Electric air-to-fuel ratio control system
US4136645A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | May 11, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/74
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A function signal having a desired characteristic curve is generated through the logical operation on a vehicle speed signal indicative of the speed of a vehicle, a ratio signal indicative of the air-to-fuel of the mixture supplied to the engine mounted on the vehicle, and a pressure signal indicative of the pressure in the intake manifold of the engine. The position of an electromagnetic valve for adjusting the amount of fuel supplied to the engine is controlled in response to the function signal, thereby controlling the air-to-fuel of mixtures in accordance with the various driving conditions of the vehicle including the vehicle speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.