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parallel shift transmission

A technology of shifting transmission and transmission, applied in the field of drive train, can solve the problems of reduced transmission capacity, unsuitability for parallel shifting transmission, etc., and achieve the effect of increasing the total expansion

Active Publication Date: 2017-09-01
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a given installation space, the transmission capacity is correspondingly reduced with a correspondingly preferentially maintained friction reserve, so that the use of friction clutches with dry drives is less suitable in drive trains with higher torques to be transmitted parallel shift transmission

Method used

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Examples

Experimental program
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Embodiment Construction

[0028] figure 1 A drive train 1 is shown schematically with: a drive unit 2 with a drive shaft 3, for example an internal combustion engine with a crankshaft; Includes files I to VI. The sum transmission 4 can be accommodated in the region of the engine compartment provided for the internal combustion engine, for example in a clutch housing.

[0029] The drive train 1 can be operated in three stable operating states of the friction clutches 6 , 7 and the lock-up clutch 5 . In these operating states, the torque on the sum transmission 4 is distributed corresponding to its gear ratio and the friction clutches 6 , 7 transmit a corresponding share to the associated transmission input shaft 11 , 12 . If a gear is inserted in both subtransmissions 13, 14, an intermediate gear is obtained. In the first operating state, the lock-up clutch 5 is open and the two friction clutches 6 , 7 are closed. In the second operating state, the locking clutch 5 is closed, the friction clutch 6 ...

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Abstract

The invention relates to a drive train of a motor vehicle with a drive unit and a parallel shift transmission, the parallel shift transmission has two sub-transmissions each containing a plurality of shiftable gears, the sub-transmissions each have a transmission input shaft, which by means of A friction clutch can be connected to the crankshaft of the drive unit. In order to extend the parallel shift transmission with a large number of discrete gear ratios and thereby reduce the friction introduced into the friction clutches, a sum transmission which can be shifted by means of a lock-up clutch is arranged between the friction clutches.

Description

technical field [0001] The invention relates to a drive train of a motor vehicle with a drive unit and a parallel shift transmission with two subtransmissions each containing a plurality of shiftable gears, the subtransmissions each having a transmission input shaft , which can be connected to the crankshaft of the drive unit by means of a friction clutch. Background technique [0002] Such a drive train is known, for example, from EP 1632694 A2. In this case, a drive unit, for example an internal combustion engine, drives a parallel transmission by means of a drive shaft, such as a crankshaft. In this case, the parallel shift transmission contains two subtransmissions, each with a transmission input shaft, which are connected to the crankshaft of the internal combustion engine by means of a friction clutch. Each sub-transmission contains a number of shiftable gears, wherein when a gear is engaged, the torque of the individual transmission input shafts of the sub-transmiss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/44F16H37/04F16D21/06F16D21/08B60K6/365B60K6/387B60K6/48B60K6/547
CPCF16D21/06F16D21/08F16H3/097F16D2021/0669F16H37/046B60K6/365B60K6/387B60K6/48B60K6/547F16H3/006F16H2200/0052F16H2200/2005F16H2003/008Y02T10/62F16D25/10
Inventor H·维特
Owner SCHAEFFLER TECH AG & CO KG
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