Control device for automatic gear transmission

一种齿轮变速器、控制装置的技术，应用在传动装置控制、带有齿的元件、皮带/链条/齿轮等方向，能够解决变速器卡死、变速器损坏、机动车行驶状态不可控制等问题，达到可靠锁闭的效果

Inactive Publication Date: 2011-12-21
DAIMLER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simultaneous engagement in this way can cause the transmission to lock up, resulting in uncontrollable driving of the vehicle and damage to the transmission

Method used

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  • Control device for automatic gear transmission
  • Control device for automatic gear transmission
  • Control device for automatic gear transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] according to figure 1 An automatic transmission in the form of a dual clutch transmission 10 for a motor vehicle with seven forward gears and one reverse gear is connected via a drive shaft 11 to a drive machine 52 , for example in the form of an internal combustion engine. The drive shaft 11 is operatively connected to a first and a second clutch 12 , 13 . The clutches 12 , 13 serve as launch clutches and are designed in particular as hydraulically actuatable wet friction clutches. Furthermore, the clutch 12 is operatively connected to a first transmission input shaft 14 on which four fixed gearwheels 15a to 15d are arranged. Arranged parallel to the first transmission input shaft 14 is a first layshaft 16 on which are rotatably mounted four idler / floating gearwheels 17a to 17d which are each connected to the first The fixed gears 15a to 15d of a transmission input shaft 14 are engaged. The idler gears 17a, 17b can be connected with the auxiliary shaft 16 in a non-r...

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PUM

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Abstract

The invention relates to a control device for an automated geared transmission, in particular a dual clutch transmission. In such transmissions, two gears of a partial transmission must not be simultaneously engaged because the transmission would be blocked such that the motor vehicle could no longer be kept under control while driving, and the transmission would be damaged. The aim of the invention is to design a control device for an automated geared transmission in which two gears of a partial transmission are prevented in a simple manner from being simultaneously engaged. Said aim is achieved by providing the gear actuation system (62) with a first and a second gear slide (SS GS73, SS GS51) which allow a shifting mechanism (18, 19) to be selected. A second gear control pressure of the second gear slide (SS GS51) counteracts the first gear control pressure on the first gear slide (SS GS73) such that the first gear slide (SS GS73) can be blocked using the second control pressure.

Description

technical field [0001] The invention relates to a control device for an automatic gear transmission, in particular a dual clutch transmission, of a motor vehicle having the features of the preamble of claim 1 . Background technique [0002] EP 1 635 091 A1 discloses a hydraulic control device for an automatic gear transmission of a motor vehicle in the form of a dual clutch transmission with two sub-gears. The different gears of the dual clutch transmission can be engaged and disengaged by means of a shifting device of the gear actuation system, which is in the form of a bidirectionally acting shifting cylinder. The gear to be engaged or disengaged is determined by means of group selection, actuator selection and actuator chamber selection. [0003] Simultaneous engagement of two gears of a sub-gear is not permitted in this type of transmission. Simultaneous engagement in this way can lead to a jamming of the transmission, which can lead to an uncontrollable driving state ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/18
CPCF16H61/688F16H61/2807F16H2061/1204Y10T74/20024Y10T74/19228Y10T74/19251
Inventor M·布兰登伯格
Owner DAIMLER AG
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