Electrically controlled or regulated fuel metering system for an internal combustion engine

US4449508A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Otto Glockler · Renningen, DE
• Dieter Gunther · Steinheim an der Murr, DE
• Michael Horbelt · Schwieberdingen, DE
• Ulrich Steinbrenner · Kohlhof, DE

Key dates

• Filing date: Sep 13, 1982
• Grant date: May 22, 1984
• Expiry date: Sep 13, 2002

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/1488
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An electronically controlled or regulated fuel metering system for an internal combustion engine having one sensor each for the air flow in the intake tube and for the throttle valve position is proposed. In accordance with the signals of these sensors, influence can be exerted upon at least one of the operating states of lambda regulation, full load and fuel quantity limitation. The fundamental concept is that not only the air flow rate signal or only the signal relating to an opened throttle valve should be evaluated as a full-load signal but that the full-load state is presumed to exist when, with the throttle valve opened, the air throughput in the intake tube simultaneously exceeds a predetermined value as well. The same condition applies to full-load enrichment. The overall result is cleaner exhaust gas.