Apparatus for controlling the operation of the engine-transmission assembly of a motor vehicle

US4353272A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Erich Schneider · Tauberbischofsheim, DE
• Helmut Fleischer · Florstadt, DE
• Helmut Rembold · Stuttgart, DE
• Alexander Witte · Bremen, DE

Key dates

• Filing date: Nov 17, 1979
• Grant date: Oct 12, 1982
• Expiry date: Nov 17, 1999

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2061/022
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The engine is controlled by sensing fuel pedal position, indicative of desire engine power. A characteristic transmission data field is used to select the appropriate gear or gear ratio. The engine is controlled on the basis of characteristic engine data or on the basis of an engine operating curve associated with minimum fuel consumption in dependence of the changes in engine speed due to the changing transmission ratio. In normal driving, the apparatus selects operation along the minimum fuel curve whereas during periods of increased power demand, the apparatus operates in dependence of characteristic engine data. Also proposed is apparatus which takes account of the operational vehicle status and effects the switchover from optimum fuel consumption to optimum power delivery with priority assigned to optimum fuel economy.