Method for operating a dual clutch transmission

A dual-clutch and transmission technology, applied in vehicle gearbox, transportation and packaging, components with teeth, etc., can solve problems such as loss, increase power consumption, reduce efficiency of dual-clutch transmission, and reduce control and adjustment costs. , the effect of reducing drag loss

Active Publication Date: 2019-03-29
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 dual clutch transmission
  • Method for operating a dual clutch transmission
  • Method for operating a dual clutch transmission

Examples

Experimental program
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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 operating a dual-clutch transmission (1) comprising sub-transmissions (31, 32) which can each be connected to a dual-clutch via a clutch of a dual-clutch arrangement (4) In or out of the power flow of the transmission, at least two different transmission ratios can be engaged or disengaged respectively in the area of ​​the individual transmission sub-transmissions by actuating the switching elements, wherein in the operation of the double-clutch transmission basically One of the sub-transmissions (31 or 32) is connected at a time, and the other sub-transmission (32 or 31) is disconnected. According to the invention it is provided that in the area of ​​an engaged sub-transmission (31 or 32) the gear ratios are engaged simultaneously in the area of ​​an open sub-transmission (32 or 31) via the switching element (14 , 17 or 22, 25) are disengaged, as long as there is no transmission ratio conversion requirement in the dual clutch transmission (1).

Description

technical field [0001] The invention relates to a method for operating a dual clutch transmission. 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 probability in this region of the dual-clutch transm...

Claims

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Application Information

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Patent Type & Authority Patents(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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