Method for simulation of an internal combustion engine comprising a number (cyl total ) of cylinders (N cyl ), wherein simulation output parameters (X, X) of the cylinders (N cyl ) are calculated based on the angular position (Õ CS ) of a crank shaft and ...

An object of the present invention is that after return from fuel cut, an oxygen storage amount in a catalyst in an exhaust path and an oxygen storage amount in a catalyst in an exhaust gas recirculating path are promptly adjusted to be in appropriate stat...

The internal combustion engine exhaust system contains a pre-catalyser and a main exhaust gas catalyser. The control system may act as a mixture control and may have a circuit block (10) with an input (12) from a sensor downstream of the pre-catalyser and ...

A method and system for adjusting a fuel injection amount in one of two groups of cylinders in an internal combustion engine (12) using feedback signals generated by oxygen sensors (38,42,46) coupled to both groups of cylinders. The claimed invention inclu...