Volkswagen Ag

Audi Ag

Achim Donnerstag

Kurt Maute

Michael Daetz

Walter Streit

Frank-michael Wittig

Alfred Wirth

Wolfgang Zag

Erhard Otto

Rainer Mertl

An exhaust system of a multi-cylinder internal combustion engine includes at least one first gas sensor, which is sensitive for at least one component of the exhaust gas and is arranged in the exhaust system, for determining an air/fuel ratio supplied to the internal combustion engine. It also includes a regulating device for regulating the air/fuel ratio as a function of a signal supplied by the gas sensor and at least one first catalytic converter arranged in the exhaust system. At least one first catalytic converter is arranged in a position of the exhaust system close to the internal combustion engine so that it is upstream from the at least one first gas sensor in the direction of flow of an exhaust gas of the internal combustion engine, and the regulation device includes a regulator which receives the signal of the first gas sensor as input, and in which an algorithm for cylinder-selective determination and regulation of the air/fuel ratio is stored.

Exhaust system of a multi-cylinder internal combustion engine and a method of cleaning an exhaust gas

Method of controlling the electric heating of a catalytic converter

Growing community of inventors

Braunschweig, Germany

Achim Donnerstag