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A method for determining error of torque of a thermal engine in a hybrid drivetrain

A heat engine, hybrid technology, applied in the field of Minghuan

Active Publication Date: 2018-12-07
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in a motor vehicle with a hybrid drive system, it is not possible to know and thus determine the error of the heat engine torque during the idling phase of the heat engine and in the low speed range described

Method used

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  • A method for determining error of torque of a thermal engine in a hybrid drivetrain
  • A method for determining error of torque of a thermal engine in a hybrid drivetrain
  • A method for determining error of torque of a thermal engine in a hybrid drivetrain

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Embodiment Construction

[0029] figure 1 Shows a schematic diagram, not shown in detail, of a hybrid drive train 1 of a motor vehicle according to an embodiment, in which the method according to the invention for determining the torque M of a heat engine 2 in a hybrid drive train 1 of a motor vehicle can be used C method of error. exist figure 1 The relative positions of the various components (thermal engine 2, electric machine 3, battery 4, generator 5, hybrid separation clutch 7, dual clutch 9, control unit 10) and the relative transmission 6 and at least one drive wheel 8 are only schematically shown in s position.

[0030] in accordance with figure 1 In the embodiment of the hybrid drive train 1 , a series hybrid drive train 1 is shown, as is known from the prior art. An electric machine 3 is arranged downstream of the heat engine 2 (internal combustion engine). The accumulator 4 (battery) is used to store electrical energy for the electric machine 3 (motor). The generator 5 is used to conv...

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Abstract

The invention relates to a method for determining error of torque of a thermal engine in a hybrid drivetrain. The torque MC of a thermal engine and the torque ME of a motor are determined. During a charging period of an accumulator, a hybrid cut-off clutch is adjusted in such a manner that the friction torque MF is the only unknown quantity under the torque balance MB state. The friction torque MFis calculated according to the physical torque balance. The error of the torque MC of the thermal engine is determined to be the friction torque MF.

Description

technical field [0001] The invention relates to a method for determining an error in the torque of a heat engine in a hybrid drive train of a motor vehicle. In particular, the invention relates to a method for determining an error in the torque of a heat engine in a hybrid drive train of a motor vehicle, wherein the hybrid drive train also includes an electric machine, a hybrid disconnect clutch and a battery, the electric machine being in the hybrid drive train is connected downstream of the heat engine, the hybrid disconnect clutch is used to selectively connect or disconnect the heat engine from the motor, and the battery is used to store electrical energy for the motor. [0002] The invention also relates to a computer device or a computer program module enabling a control unit to carry out a method for determining an error in the torque of a heat engine in a hybrid drive train of a motor vehicle. Furthermore, the invention relates to a motor vehicle with such a computer ...

Claims

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Application Information

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IPC IPC(8): B60W20/40B60W10/02B60W10/06B60W10/08
CPCB60W10/02B60W10/06B60W10/08B60W20/40B60W2710/0666B60K6/48F16D48/10B60K2006/4825B60W20/50F16D2500/1066F16D2500/30412F16D2500/1045F16D2500/30421F16D2500/5104F16D2500/5114Y02T10/62
Inventor 拉夫·曼斯皮尔格克里斯汀·韦伯
Owner SCHAEFFLER TECH AG & CO KG
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