Torque compensation method for controlling a direct-injection engine during a regeneration of a lean nox - memory

摘要

A method for controlling of a direct injection - gasoline engine (10) during a regeneration of a in an exhaust gas path of the motor (10) arranged lean nox - memory (22), wherein the regeneration is distinguished by a transition from a layered lean engine operation is to form a homogeneous rich engine operation, comprising the steps of:Determining a desired base torque;Estimating a decrease in the motor torque, which consists of the transition from a layered lean engine operation to form a homogeneous rich engine operation during a lean nox - memory - regeneration would result, wherein the estimating of the motor torque reduction is effected by:– Determining a desired mass of air charge and exhaust gas recirculation for a lean nox - memory - regeneration (210),– Determining a reference value for the intake manifold - absolute pressure for the lean nox - memory - regeneration (212), and– Determining a vorkopplungswertes for torque compensation from the desired mass of air charge and exhaust gas recirculation and from the reference value for the intake manifold - absolute pressure which is sufficient, the desired base torque level during a lean nox - memory - regeneration (214) to maintain; and adding the vorkopplungswertes to the..