Method for controlling a fuel quantity to be fed to an internal combustion engine and engine control device operating according to the method

Abstract

A method for determining a fuel quantity to be fed to an internal combustion engine, includes initially determining a desired fuel quantity on the basis of a desired operational performance of the internal combustion engine. Moreover, a minimum air/fuel ratio is determined at which soot-free operation of the internal combustion engine is possible, and a maximum fuel quantity is determined on the basis of the minimum air/fuel ratio. The desired fuel quantity which is limited to the maximum fuel quantity is then determined as the fuel quantity to be fed to the internal combustion engine. It is advantageous in this case to determine the minimum air/fuel ratio in non-steady operation on the basis of a charging pressure or a difference between the charging pressure and the ambient pressure.

Dependencies are inferred from the claim text.