Arrangement for the metering of fuel in an internal combustion engine

US4653450A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Herbert Arnold · Eberdingen, DE
• Werner Jundt · Ludwigsburg, DE
• Siegfried Malicki · Bietigheim-Bissingen, DE
• Peter Werner · Wiernsheim, DE

Key dates

• Filing date: May 8, 1985
• Grant date: Mar 31, 1987
• Expiry date: May 8, 2005

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/266
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention is directed to an arrangement for metering fuel to a spark-ignition internal combustion engine equipped with a fuel injection system. The fuel metering arrangement includes a control apparatus which generates injection pulses for controlling the injection valves, the pulses being generated at least in dependence upon the rotational speed of the engine. In the event of a failure of the control apparatus, control of the injection valves is switched over to injection pulses derived from the ignition system of the engine. In this arrangement, the transfer of control may be accomplished either by pulling the central plug of the control apparatus or by automatic error detection via a speed relay.