Fuel injection system

US4003350A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Hermann Eisele · Leinfelden, DE
• Otto Glockler · Renningen, DE
• Rudolf Schwammle

Key dates

• Filing date: Sep 18, 1975
• Grant date: Jan 18, 1977
• Expiry date: Sep 18, 1995

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/1491
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection system for an internal combustion engine having integral action regulation for influencing the fuel-air mixture supplied to the engine includes an exhaust gas oxygen sensing probe, two regulating stages, and an electronic control unit all connected in circuit to provide a signal to the fuel injection valves directly or to an electromagnetic pressure control valve in the circuit of the fuel injection valves for varying the fuel quantity injected and consequently the fuel-air mixture to the engine.