Electronic control system for fuel metering in an internal combustion engine

US5243948A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Eberhard Schnaibel · Hemmingen, DE
• Rudi Mayer · Lambach, DE
• Thomas Golzer · Schwieberdingen, DE
• Bernhard Ebinger · Ditzingen, DE
• Dieter Schuler · Lichtenfels, DE

Key dates

• Filing date: Jun 1, 1992
• Grant date: Sep 14, 1993
• Expiry date: Jun 1, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/047
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An electronic control system for fuel metering in an internal combustion engine includes, inter alia, means for determining a basic injection-quantity signal and a transition compensation signal for adapting the quantity of fuel metered-in in the case of acceleration and deceleration, in which, for the purpose of transition compensation, a wall-film quantity signal and a discharge factor signal (Tk) are formed as a function of load and rotational speed, and the transition compensation signal takes into account both the wall-film quantity signal and the discharge factor signal. The discharge factor signal can either be read from a characteristic map or assume two discrete values. The proposed system serves the purpose of achieving a transitional behavior which is as optimum as possible with respect to the exhaust gas.