Robert Boschgmbh

Bernhard Weichel

Rolf Daumer

Albrecht Clement

Thomas Wilfert

Helmut Schwarz

Gustav Virgilio

Wilfried Venzke

Thomas Theml

Gerd Auracher

An electronic control system for internal combustion engines which has signal generator circuits for the fuel metering and for the ignition. During starting, especially in the case of cold starting, three different phases are provided for controlling the injected fuel quantity and for regulating the fuel quantity downward; furthermore, the ignition angle is adjusted in accordance with temperature and rpm. In terms of the fuel metering, the boundary between the first and second phase is dependent on the rpm or on a maximum total number of revolution cycles, and the end of the second phase is predetermined by a minimum metering signal which is dependent on temperature. In the ignition system, there is an increasing adjustment toward 'early' approximately in the rpm range between 200 and 600 revolutions per minute as well as an increasing adjustment toward 'late' as the temperature increases.

Electronic control system for internal combustion engines

Growing community of inventors

Stuttgart, Germany

Bernhard Weichel