Method and arrangement for controlling a combustion engine

Abstract

A method for controlling a direct injection combustion engine is disclosed. The method includes generating an air/fuel mixture to the respective cylinders of the engine, and switching between at least a first mode of operation and a second mode of operation of the engine by adjusting the air/fuel mixture supplied to the engine and the amount of time for injecting the mixture. The switch in mode of operation is initiated in connection with operation of the engine with an air/fuel mixture adjusted in such manner that correct operation of the engine is allowed in both modes of operation during the switch. An arrangement for such a control is also disclosed. The method and arrangement provides an improved control between, for example, a stratified and a homogeneous mode of operation in a direct injection engine, wherein stable combustion in the engine and improved comfort for the passengers is achieved.

Dependencies are inferred from the claim text.