Patent · US Expired

Electronic fuel injection system in an internal combustion engine

US4155332A · kind A · utility

36Cited by
6References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 19, 1977
Grant dateMay 22, 1979
Priority date
Expiry dateSep 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.