Method and device for operating and monitoring an internal combustion engine

US6357419B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Winfried Langer · Schützingen, DE
• Frank Bederna · Ditzingen, DE
• Martin Streib · Leinfelden, DE

Key dates

• Filing date: May 9, 2000
• Grant date: Mar 19, 2002
• Expiry date: May 9, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/2454
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method and an arrangement for operating and monitoring an internal combustion engine are suggested wherein, in at least one operating state, operation is undertaken with a lean air/fuel ratio. At least one quantity, which represents the degree of actuation of the accelerator pedal, and a quantity, which represents the engine rpm, are detected and, in at least one operating state, only an operation of the engine with an approximately stoichiometric or rich mixture is permitted and/or only an operation with limited air supply is permitted. The operation is monitored on the basis of at least one operating variable of the engine.