Robert Boschgmbh

Thomas Theml

Horst Harndorf

Marc Bareis

Albrecht Clement

Rolf Daumer

Thomas Wilfert

Helmut Schwarz

Gustav Virgilio

Wilfried Venzke

Gerd Auracher

Bernhard Weichel

A device for re-treating exhaust gases of an internal combustion engine is proposed, in which to promote the efficiency of a downstream reducing catalytic converter, fuel is metered via a metering valve and introduced into the exhaust system via an evaporator device. A metal sheath is provided with a sheathed glow-plug element that is used as the evaporator device and via a flow opening on a face end introduces an evaporated reducing agent into the exhaust gas stream.

Pipe evaporator for feeding additional fuel into the exhaust gas

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

Eberdingen-Hochdorf, Germany

Thomas Theml