Gm Global Technolgoy Operations, Inc.

Stefan Horst

Arnaud Schilly

Nils Oth

Alexander Merz

Bastian Baeck

Florin Korn

Dieter Wiedenhoft

A method for operating an internal combustion engine is described in which a combustion air ratio (&#x3bb;) is determined and used to determine a deviation of this combustion air ratio from an in particular default or determined set point combustion air ratio. Spontaneous ignition of the internal combustion engine are detected based on the determined deviation (&#x394;&#x3bb;) and used to control the operation of the engine.

Control means and method for operating an internal combustion engine

A method for the fuel consumption reduction and/or power increase of an internal combustion engine of a motor vehicle is disclosed. A crank angle of a crankshaft is detected at which out of a cylinder the exhaust gases of a cylinder can be representatively measured on a lambda probe. The exhaust gas flow is measured on the lambda probe. A signal of the lambda probe is scanned at the time of the detection of the crank angle. A value indicated the detected angle and/or the scanned signal is sent to a computer. The value is corrected with the help of an exhaust gas pressure or exhaust gas back pressure model stored in the computer. An effective combustion lambda of the cylinder is calculated based on the sent values and a global lambda value stored in the computer and used to the control of the internal combustion engine.

Determination of the effective fuel-air ratio of a supercharged internal combustion engine with scavenging air component

A method for controlling a motor vehicle with an internal combustion engine and a catalytic converter is disclosed. The method includes: determining an oxygen storage value, which is a dimension for oxygen stored in the catalytic converter, detecting an engine load, carrying out a part evacuation of the oxygen from the catalytic converter with a fuel enrichment when the oxygen storage value exceeds a trigger evacuation threshold value and when the engine load is below a low-load threshold value.

Method for the load dependent reduction of fuel consumption following deceleration fuel cut out

The invention concerns a method for the damping of load impacts in the drive train of a motor vehicle driven by an internal combustion engine equipped with an electronic control system. It is the aim of the invention to provide load impact damping which adapts to the varying vibration behavior of the drive train during the life of a motor vehicle.

Method for the damping of load impacts in the drive train of a motor vehicle driven by an internal combustion engine equipped with an electronic control system

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Neu-Isenburg, Germany

Stefan Horst