Apparatus for the adjustment of a quantity-metering member of a fuel injection pump

US4357920A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gerhard Stumpp · Stuttgart, DE
• Wolf Wessel · Oberriexingen, DE
• Ulrich Flaig
• Fridolin Piwonka · Asperg, DE
• Ludwig Walz · Stuttgart, DE

Key dates

• Filing date: Jan 30, 1981
• Grant date: Nov 9, 1982
• Expiry date: Jan 30, 2001

Classification

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

Abstract

A device is proposed for the adjustment of a quantity-metering member of a fuel injection pump in an internal combustion engine with self-ignition, comprising an electric circuit arrangement for a control signal dependent on operating parameters, this signal inffluencing the position of the quantity-metering member via an electromagnetic servo unit wherein the electric circuit arrangement includes at least one series circuit made up of a minimum value selection stage, a maximum value selection stage, and a servo unit controller for the quantity-metering member and the output signals of at least two set-point stages for, in particular, the speed, the smoke limit, equalization, and exhaust gas temperature can be fed to the minimum value selection stage with the maximum value selection stage additionally coupled to a start control stage. In addition to the use of the device as a total controller, i.e., the electric circuit arrangement alone determines the position of the quantity-metering member and no mechanical controller is additionally provided, the device can also be utilized where only a regulated stop for the quantity-metering member, for example a control rod, is present as th…