Method and control device for calculating adjustment limit for determining assumed real moment

Abstract

The present invention relates to a method and control device for calculating adjustment limit for determining assumed actual torque. The assumed actual torque provides torque set in condition that torque is provided of an internal combustion engine, the method includes steps: calculating generated rated torque from one or more torques, wherein without considering the torque provide of determined intervention function; calculating optimal torque data without intervention of the determined intervention function according to generated rating torque and in condition of considering dynamic action of the air system of the internal combustion engine; selecting a first or a second torque model to provide at least a efficiency limit according to limit effect of the efficiency during activation of the intervention function, wherein the efficiency limit is relative to largest possible or smallest possible efficiency provided by the internal combustion engine; determining adjustment limit based ondata of the optimal torque and at least an efficiency limit as assumed actual torque.

Description

technical field [0001] The present invention generally relates to ascertaining an assumed actual torque in an internal combustion engine, which gives the actual torque output if intervention functions of the internal combustion engine do not have an effect on the torque specification. Background technique [0002] The internal combustion engine in a car is generally triggered by means of a predetermined torque, which is converted into engine parameters using an engine model, which corresponds to direct adjustments of the internal combustion engine, such as ignition angle, fuel injection quantity, throttle adjustment, etc. . When providing a predetermined torque, in modern automobiles, generally multiple control functions or control devices that communicate with each other, such as engine control devices, gearbox control devices, ESP control devices, etc. participate in the control, and they provide their own torque settings. value, which is taken into account in the predete...

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Problems solved by technology

However, the tuning limits of the engine's internal physics have so far not considered these effects

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