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Method for operating a double clutch transmission

A dual-clutch and transmission technology, which is applied to vehicle gearboxes, transportation and packaging, and components with teeth, can solve problems such as increasing the consumption and loss of working machines, reducing the efficiency of dual-clutch transmissions, etc., to reduce drag losses, The effect of less control and regulation costs

Active Publication Date: 2014-12-31
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the region of the open clutch associated with the disengaged sub-transmission of the dual-clutch arrangement, drag torques occur which result in power losses and reduce the efficiency of the dual-clutch transmission to a non-negligible extent and thus increase the working machine unnecessarily. consumption, wherein this drag torque produces a braking effect on the drive in the region of the clutches of the dual clutch arrangement via the natural engagement of the two partial transmissions

Method used

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  • Method for operating a double clutch transmission
  • Method for operating a double clutch transmission
  • Method for operating a double clutch transmission

Examples

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Embodiment Construction

[0026] figure 1 A dual clutch transmission 1 is shown, which comprises a transmission input shaft 2 and a transmission output shaft 3 . The transmission input shaft 2 is connected in a manner known per se to a dual clutch arrangement 4 in a rotationally fixed manner in the region of a common outer disk carrier 5 of the two clutches K1 and K2 . The inner friction plate carrier 6 of the clutch K1 is connected to the first transmission input shaft 7 of the dual clutch transmission 1 in a relatively non-rotatable manner, and the inner friction plate carrier 8 of the clutch K2 is relatively non-rotatable to the second transmission input shaft 9 of the dual clutch transmission 1 The second transmission input shaft is now designed as a hollow shaft and is arranged concentrically to the first transmission input shaft 7 .

[0027] The second transmission input shaft 9 is now formed with two fixed gears 10 , 11 which mesh with idler gears 12 , 13 arranged rotatably on the first counter...

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Abstract

The invention relates to a method for the operation of a dual-clutch transmission (1) including sub-transmissions (31, 32) wherein, through a clutch of a dual-clutch device (4), the sub-transmissions are able to be switched on in the power flux of the dual-clutch transmission or are able to be switched off from the power flux. In the sub-transmissions, two different transmission ratios are able to be engaged or disengaged through the actuation of shifting elements. In the operation of the dual-clutch transmission, one of the sub-transmissions (31 / 32) is switched on, while the other sub-transmission (32 / 31) is switched off. If the transmission ratio in the switched-on sub-transmission (31 / 32) is engaged, all transmission ratios in the switched-off sub-transmission are simultaneously disengaged through the shifting elements(14, 17 / 22, 25), as long as there is no request for a change of transmission ratio in the dual-clutch transmission (1).

Description

technical field [0001] The invention relates to a method for operating a dual clutch transmission of the type specified in the preamble of claim 1 . Background technique [0002] Dual-clutch transmissions are known in practice with sub-transmissions which can be connected to or disconnected from the power flow of the dual-clutch transmission via each clutch of the dual-clutch arrangement, in the region of which the shift elements are actuated. At least two different transmission ratios can be engaged or disengaged respectively. During operation of the dual-clutch transmission, basically one sub-transmission is engaged at a time and the other sub-transmission is disconnected, at which point the transmission ratio currently provided in the dual-clutch transmission is engaged in the range of the engaged sub-transmission, In the region of the disengaged sub-transmission, however, another gear ratio is always engaged, which in the dual-clutch transmission is engaged with high pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H61/688
CPCF16H3/006F16H3/097F16H61/688F16H2200/0069F16H2061/0015F16H2306/18Y10T74/19228
Inventor A·罗姆
Owner ZF FRIEDRICHSHAFEN AG
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