Method and device for operating engine systems having an internal combustion engine during mode switching

Abstract

In a method for adapting a torque model for operating an internal combustion engine, which torque model indicates an ignition angle adjustment as a function of an air charge in a cylinder of the internal combustion engine, the torque model is adapted based on a variation of an operating variable of the internal combustion engine caused by a mode switching.

Description

technical field [0001] The invention relates generally to the field of internal combustion engines, in particular to an adaptation method with respect to the correction of the torque model during the service life of the internal combustion engine. Background technique [0002] Internal combustion engines, in particular gasoline engines, which are operated with ignition, are controlled by means of a torque model. The entire structure of the torque model is based on a predetermined torque desired by the driver, which is usually specified by the driver via the accelerator pedal. From the driver's desired torque, a desired filling is calculated by means of a suitable functional structure, which specifies the desired air quantity per working stroke in the cylinder. Starting from the setpoint filling, all other parameters for operating the internal combustion engine, such as ignition angle, injection quantity, camshaft position and other parameters, can be ascertained from the sp...

AI Technical Summary

Problems solved by technology

Such a filling step, without corrective effect, usually leads to a torque step, which must be compensated by an intervention via adjustment of the ignition angle, since otherwise the driving comfort would be affected by the jerk

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