Daimler Chrysler Ag

J&ouml;rg Miroll

Peter Hohner

Hartung Wilstermann

Arnold Kaden

Werner Eissler

A method for detecting flow-reducing changes in an exhaust-gas catalyst body is provided. The method includes measuring the ion-current signal from an ion-current probe in an internal combustion engine and monitoring the signal to determine whether its signal strength for a particular operating cycle falls below a minimum strength which can be specified as a function of the engine operating state. The method also include providing warning information to the control system when such an event occurs. The method further includes a variety of embodiments used to determine whether the ion current signal falls below a minimum strength.

Method for detecting flow-reducing changes in an exhaust-gas catalyst body

An internal combustion engine with a piston arranged in a cylinder bore, a pair of intake passages to the cylinder bore, and having a piston crown provided with a crescent-shaped depression. The inlet passages are arranged symmetrically with respect to an axis of symmetry running through the center of the cylinder bore between the two intake passages. The crescent-shaped depression formed in the piston crown extends across and is symmetrical with respect to the axis of symmetry.

Growing community of inventors

Köngen, Germany

Jörg Miroll

Growing community of inventors

Köngen, Germany

J&ouml;rg Miroll

Jörg Miroll