Switching arrangement for regulation of the fuel-air mixture delivered to an internal combustion engine
US4252099A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1979 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | Apr 16, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/32
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A switching arrangement for regulation of a fuel-air mixture delivered to an internal combustion engine by means of an oxygen-measuring sensor in an exhaust flow of an internal combustion engine which produces an electric signal which is in turn used by a control unit of the fuel injection system including the fuel supply pump and timed valve and being influenced by supplementary air valve and warm-up control is improved by simplifying the circuit arrangement through the use of an rpm relay, that can be affected by the rpm of the internal combustion engine as the only relay to control operation of the control unit and timed valve as well as the fuel pump, supplementary air valve, the warm-up control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.