Electronic fuel injection system in an internal combustion engine
US4155332A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1977 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | Sep 19, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/26
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This application discloses an electronic fuel injection system in an internal combustion engine. The system comprises: a fuel injector arranged on an intake pipe of the engine; a fuel control circuit for supplying fuel through said injector in response to the intake air quantity of the engine; an intake air flow meter electrically connected to said fuel control circuit; a pressure detector arranged in the intake manifold, said detector being electrically connected to said fuel control circuit; and an engine revolutional speed sensor electrically connected to said fuel control circuit; said fuel control circuit including: a comparing circuit which compares the intake air quantity with a predetermined value; a first control circuit which actuates said fuel injector in response to the output signals of said intake air flow meter and said engine revolutional speed sensor; and a second control circuit which actuates said fuel injector in response to the output signals of said pressure detector and said engine revolutional speed sensor, wherein said fuel control circuit comprises a selecting circuit which selects said first control circuit when the intake air quantity is below the predet…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.