System for open-loop controlling and/or closed-loop controlling an internal combustion engine

US5224453A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Frank Bederna · Ditzingen, DE
• Alois Hils · Sasbach, DE

Key dates

• Filing date: Oct 10, 1991
• Grant date: Jul 6, 1993
• Expiry date: Oct 10, 2011

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2400/08
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A system for the open-loop and/or closed-loop control of an internal combustion engine is suggested at least dependent upon signal values which represent the position at least of one element influencing the power of the internal combustion engine and which are determined by a measuring device for detecting this position. This measuring device includes several sensors which each detect the position of the same element. On the basis of the signal values generated by the sensors, a first malfunction detection is carried out as to whether the signal values with respect to each other lie in a first pregiven value range. A second malfunction check takes place especially in the idle or near-idle region of the position of the particular element as to whether the signal values individually and/or to each other lie in a pregiven second value region. In this connection, the second malfunction check is less sensitive than the first.