Electronic control device for a fuel metering system of an internal combustion engine with self-ignition

US4516550A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Rainer Buck · Opfingen, DE
• Thomas Kuttner · Stuttgart, DE
• Fridolin Piwonka · Asperg, DE
• Wolf Wessel · Oberriexingen, DE

Key dates

• Filing date: May 7, 1984
• Grant date: May 14, 1985
• Expiry date: May 7, 2004

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02B3/06
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An electronic control device is proposed for a Diesel fuel metering system, in which at the onset of the starting procedure, a constant fuel quantity is pre-specified at first, and this quantity subsequently increases in steps or in a ramp-like manner. Above a predetermined rpm or starting quantity, an rpm-dependent reduction in quantity takes place, to 90% of the full-load quantity. The open-loop or closed-loop control of the starting quantity ends upon the attainment of a speed of 800 rpm, for example. Both an analog and a computerized realization of the control device are provided, and the control device according to the invention is capable of dispensing with the processing of a temperature signal and can thus dispense with the use of one temperature sensor.