Method and apparatus for controlling the fuel supply of an internal combustion engine

US4311123A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Otto Glockler · Renningen, DE
• Dieter Gunther · Steinheim an der Murr, DE
• Ulrich Steinbrenner · Kohlhof, DE
• Peter Schulzke · Oberriexingen, DE
• Albrecht Sieber · Möhrendorf, DE

Key dates

• Filing date: Dec 5, 1978
• Grant date: Jan 19, 1982
• Expiry date: Dec 5, 1998

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/126
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In order to prevent undesirable abrupt changes in engine torque when the fuel supply to the engine is shut off at the onset of engine braking, the invention provides the gradual decrease of the amount of fuel supplied to the engine beginning with the onset of engine braking and continuing until fuel has decreased to approximately 80 percent of the normal amount at which time the fuel is shut off entirely. When engine braking stops or when the operator indicates a demand for acceleration, the fuel supply is initiated at the level of approximately 80 percent of normal and is increased thereafter up to the normal amount according to a second selectable function of time.