Control system for a fuel pump

US5188081A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Manfred Birk · Oberriexingen, DE
• Gerhard Engel · Stuttgart, DE
• Wilhelm Eyberg · Leonberg, DE
• Thomas W. Henze · Lawrence, US
• Alfred Schmitt · Ditzingen, DE

Key dates

• Filing date: Dec 13, 1991
• Grant date: Feb 23, 1993
• Expiry date: Dec 13, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A control system for a fuel pump, particularly for a solenoid-valve-controlled fuel pump in the case of a self-ignitable internal-combustion engine, in which at least one pulse transmitter is mounted on the crankshaft and/or on the camshaft. The generated pulse sequences include at least several reference pulses for establishing the beginning of fuel injection, as well as speed pulses for detecting the average and the instantaneous rotational speeds. A trial activation takes place to detect into which cylinder the fuel must be injected. Based on the reaction of the fuel injection system and/or of the internal-combustion engine, it is detected whether fuel was injected into the proper cylinder.