Fuel injection system

US4781163A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Rudiger Jautelat · Tamm, DE
• Rolf Kohler · Schwieberdingen, DE
• Gunther Plapp · Echterdingen, DE
• Botho Zichner · Schwieberdingen, DE
• Hans-Martin Muller · Farmington Hills, US

Key dates

• Filing date: Jul 20, 1987
• Grant date: Nov 1, 1988
• Expiry date: Jul 20, 2007

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/045
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a fuel injection system with an acceleration enrichment and a deceleration leaning, in which the transition compensation is determined by means of the throttle valve change speed in connection with the throttle valve change path. By means of the measurement of the throttle valve position the cause for the change of the air quantity is determined so that the information concerning a change of the operating state is present more quickly and a fuel leaning or fuel enrichment can accordingly also be effected more quickly. An intermediate injection threshold, which activates an intermediate injection calculation when exceeded, is built in, in addition, for the acceleration enrichment.