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A dual-clutch and transmission technology, applied in vehicle gearboxes, transmissions, transportation and packaging, etc., can solve problems such as lengthening and limiting the possibility of vehicle installation, and achieve the effect of saving components
Inactive Publication Date: 2010-08-11
ZF FRIEDRICHSHAFEN AG
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This leads to an unsatisfactory extension of the structural length in the axial direction, which considerably limits the installation possibilities in vehicles
Method used
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[0030] The seven-speed dual-clutch transmission of the present invention includes two clutches K1, K2, the input ends of which are connected to a drive shaft w_an. Furthermore, a torsional vibration damper 17 can be arranged on the drive shaft w_an. The outputs of the clutches K1 , K2 are each connected to one of two coaxially arranged transmission input shafts w_K1 , w_K2 . The first transmission input shaft w_K1 is designed as a solid shaft, and the second transmission input shaft w_K2 is designed as a hollow shaft. Furthermore, two countershafts w_v1 , w_v2 are provided, which are arranged axially parallel to one another. The coupling of the two transmission input shafts w_K1 and w_K2 takes place here with shift elements L and M via gear meshing, so that the transmission input shafts w_K1 and w_K2 are relative to each other.
[0031] In the seven-speed dual clutch transmission according to the invention, only five gear planes are provided. in accordance with figure 1 In...
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Abstract
The invention relates to a dual clutch transmission comprising two clutches (K1, K2) the input sides of which are connected to an input shaft (w_an) and the output sides of which are connected to one of two transmission input shafts (w_K1, w_K2) that are arranged coaxially relative each other; at least two countershafts (w_countershaft1, w_countershaft2) on which toothed gearwheels, configured asidler gears (01, 02, 03, 04, 05, 06, 07, 08), are rotatably received; toothed gearwheels that are non-rotatably arranged on the two transmission input shafts (w_K1, w_K2), that are configured as fixed gears (12, 13, 14, 15, 16) and that engage at least partially with the idler gears (01, 02, 03, 04, 05, 06, 07, 08); a plurality of coupling devices (A-B, C-D, F-G, E, H, F) for the non-rotatable connection of an idler gear (01, 02, 03, 04, 05, 06, 07) to a countershaft (w_countershaft1, w_countershaft2) and respective pairs of power take-off gears (09, 10) mounted on the two countershafts (w_countershaft1, w_countershaft2), said pairs of power take-off gears being coupled to a toothed section of a power take-off shaft (w_ab); and at least one shift element (L) for coupling the two transmission input shafts (w_K1, w_K2), at least seven power-shifted forward gears (1, 2, 3, 4, 5, 6, 7) and at least one reverse gear (RA1, R1) being shiftable. The dual clutch transmission is characterized in that five gear planes (01-12, 01-06; 02-06, 02-07; 03-07, 03-14, 03-08; 04-15, 04-08; 05-16) are arranged in such a manner that at least one power-shifted winding path gear can be shifted via at least one shift element (L, M).
Description
technical field [0001] The invention relates to a dual clutch transmission for a motor vehicle of the type specified in the preamble of claim 1 . Background technique [0002] A six-speed or seven-speed dual clutch transmission is known from publication DE 103 05 241 A1. The dual-clutch transmission includes two clutches, each of which is connected with its input to a drive shaft and with its output to each of two transmission input shafts. The two transmission input shafts are arranged coaxially with one another. Furthermore, two countershafts are arranged axially parallel to the two transmission input shafts, the idler gears of which mesh with the fixed gears of the respective transmission input shafts. Furthermore, a plurality of axially displaceable coupling devices are mounted in a rotationally fixed manner on the countershafts in order to be able to engage the corresponding gearwheels. The correspondingly selected transmission ratio is transmitted via the output gea...
Claims
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Application Information
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