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Method for operating a motor vehicle with a dual clutch transmission and control unit for carrying out the method

A dual-clutch transmission and clutch technology, applied in the control device, transportation and packaging, transmission control and other directions, can solve the problem of free shaking and rely on the flexibility of the driver, and achieve the effect of improving safety and reducing burden.

Inactive Publication Date: 2016-06-22
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, intervention on the driver's side is required, so free roll depends on the dexterity of the driver

Method used

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  • Method for operating a motor vehicle with a dual clutch transmission and control unit for carrying out the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The invention relates to a method for operating a motor vehicle with a dual clutch transmission and a control device for carrying out the method.

[0015] figure 1 shows a very schematic drive train diagram of a motor vehicle, where, in figure 1 The figure shows a powertrain 1 , a driven end 2 and a dual clutch transmission 3 coupled between the powertrain 1 and the driven end 2 .

[0016] The dual-clutch transmission 3 has a first sub-transmission 4 with a first transmission input shaft 5 and a second sub-transmission 6 with a second transmission input shaft 7 , wherein the two sub-transmissions 4 , 6 are connected to a common transmission output shaft 8 effect. A first friction-locking power shift clutch 9 is assigned to the first sub-transmission 4 and a friction-locking second power shift clutch 10 is assigned to the second sub-transmission 6 , wherein the corresponding power shift clutch 9 or 10 is In the closed state, the respective transmission input shaft 5 o...

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PUM

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Abstract

A method for operating a dual-clutch transmission of a vehicle having partial transmissions with respective transmission input shafts. Two friction clutches can couple a corresponding input shaft of the partial transmissions to a drive shaft. Both partial transmissions drive a common output shaft. During a rocking free operation for rocking the vehicle free, a gear in each respective partial transmission is engaged for driving in opposed primary and secondary directions as specified by the driver. The clutches are alternately engaged and disengaged. For rocking the vehicle free, the clutch of the partial transmission having the gear for driving in the primary direction when engaged, is engaged based on accelerator pedal actuation, and in contrast the clutch of the partial transmission having the gear for driving in the secondary direction when engaged, is automatically engaged if neither of the accelerator or brake pedals has been actuated.

Description

technical field [0001] The invention relates to a method for operating a motor vehicle with a dual clutch transmission. Furthermore, the invention relates to a control device for carrying out the method. Background technique [0002] DE 10109662 B4 discloses a method for operating a motor vehicle with a dual-clutch transmission, which is used to provide short-term repeated changes in driving direction, for example during free-wheeling. The dual-clutch transmission has two sub-transmissions, wherein each sub-transmission has an independent transmission input shaft, and wherein the two sub-transmissions cooperate with a common transmission output shaft. A friction-locking first power shift clutch is assigned to the first sub-transmission and a friction-locking second power shift clutch is assigned to the second sub-transmission, wherein the corresponding power shift clutch in the closed state The respective transmission input shaft of the respective sub-transmission is coupl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H59/18
CPCF16H59/18F16H61/0213F16H2059/082B60W10/06B60W30/18045B60W10/113B60W2540/10B60W2540/12B60W2540/30B60W2710/1005B60W2710/021B60W10/02B60W2540/215
Inventor 罗兰·梅尔
Owner ZF FRIEDRICHSHAFEN AG