Method for controlling the quantity of fuel and/or air to an internal combustion engine on a cylinder-by-cylinder basis

Abstract

A method for controlling the quantity of fuel and/or air to an internal combustion engine on a cylinder-by-cylinder basis is characterized in that a signal that is influenced by combustion or pertains to a quantity that influences the combustion and contains items of information from all cylinders, mutually offset in time, is analyzed by ascertaining vibration components in the frequency range caused by cylinder-specific differences and regulating these components separately for selected frequencies, and in that an amplitude regulator that determines the amplitude of a correction intervention measure and a phase regulator that determines the allocation of an intervention pattern with respect to the cylinders are provided for each frequency to be compensated.

Dependencies are inferred from the claim text.