Determining operating states of an internal combustion engine by means of a generator regulator of an electric machine which is coupled to the internal combustion engine

Abstract

The invention relates to a method for determining a coupling state (128a - 138a) of a drive train (2) of a motor vehicle (1) coupled to a clutch (4) on an internal combustion engine (112). Said methodcomprises the following steps: detecting the temporal course of a rotational speed (n) correlated to the rotational speed (nBKM) of the internal combustion engine (112); detecting at least one speedpattern (128 -138), produced by the internal combustion engine (112), from the temporal course of the rotational speed (nBKM), that has an oscillation (O) with at least one amplitude (A) superimposedover the temporal course of the mean value (DMD) of the rotational speed (nBKM), then it is closed in a coupling state (128a - 138a) when within a time interval ([delta]t), a characteristic change ofthe rotational speed (nBKM) and a characteristic behavior of the amplitudes (A) is detected. Furthermore, the invention relates to a corresponding computing unit (118) which is configured to carry outthe method, to an electric machine comprising the computing unit and to a corresponding computer program for carrying out said method.

Description

technical field The invention relates to a method for determining a clutch state of a drive train coupled to a clutch of an internal combustion engine of a motor vehicle, as well as a computer program and a computing unit for executing the computer program. Background technique To regulate the on-board voltage in a vehicle, electric motors, in particular separately excited electric motors, can be used. They have a regulator that adjusts the field current of the motor according to the on-board voltage. A machine of this type is known from DE 10 2012 204751 A1. Furthermore, it is known to detect the operating state of the internal combustion engine in an engine control device, which recognizes the operating state on the basis of its own set preset value and transfers the corresponding predetermined value associated with the corresponding operating state of the internal combustion engine via a suitable interface Regulator supplied to the motor. The decentralized detection o...

AI Technical Summary

Problems solved by technology

However, such recognition is currently only possible externally, for example by means of the engine control unit or the aforementioned control and regulation unit for controlling the actuation of the clutch, wherein the clutch state thus detected must be forwarded accordingly to the controller of the electric motor, for motor adjustment

However, these methods are very complex, since the corresponding clutch state must first be recognized or determined externally, the determined clutch state is transmitted to the controller of the electric motor, and then, if necessary, the controller executes the corresponding clutch state on the electric motor. The corresponding adjustment pre-determined value of the clutch state

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