Robert Boschgmbh

Texas Instruments Holland B.v.

Ulev Gmbh

Jorg Lange

Christof Vogel

Georg Mallebrein

Klaus Joos

Peter Romann

Winfried Moser

Erich Schneider

Martin Klenk

Andreas Eichendorf

Gerhard Benz

Rainer Bone

Nikolaus Simon

Dieter-Andreas Dambach

Anwar Abidin

Klaus-Henning Krohn

Herbert Gladigow

Internal combustion engine

Injection arrangement for an internal combustion engine and method for

Fuel injection system for a combustion engine

In a method and device for monitoring a secondary-air system, a first value is determined which characterizes the secondary air stream blown by the secondary-air system into the exhaust-gas channel of an internal combustion engine. On the basis of this first value, the functioning of the secondary-air system is judged. If the first value lies within a predeterminable interval, it is concluded that the secondary-air system is operating properly. If the first value, on the other hand, lies outside of this predeterminable interval, it is concluded that a malfunction is present. The first value is determined from a second value which characterizes the stream of air fed to the internal combustion engine, from the air/fuel ratio of the mixture drawn in by the internal combustion engine, and from the air/fuel ratio prevailing in the exhaust-gas channel downstream of the place of introduction of the secondary-air line.

Method and device for monitoring a secondary-air system of a motor

Growing community of inventors

Eberdingen, Germany

Jorg Lange