Hydraulic control device for an automatic transmission

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Hydraulic control device for an automatic transmission

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BECK STEFAN / SIBLA CHRISTIAN / MARGRAF CHRISTOPH / ZIEMER PETER

A hydraulic control device for controlling multiple torque-transferring shift elements of an automatic transmission, where each of the shift elements features at least one hydraulic actuator, which includes one actuating pressure chamber, at least one stop valve and at least one hydraulic shift device with multiple pressure adjusting devices connected to the different shift elements. Thereby, the stop valve is configured and arranged in such a manner that the actuators of at least two shift elements are hydraulically connectable to the pressure adjusting devices through a common stop valve. In a first shifting position, all actuating pressure chambers of the at least two shift elements are tightly sealed by the stop valve. In a second shifting position, all actuating pressure chambers of the at least two shift elements are connected through the stop valve to the pressure adjusting device allocated to the respective shift element.

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Title :

Hydraulic control device for an automatic transmission

Contributors:

BECK STEFAN (author) / SIBLA CHRISTIAN (author) / MARGRAF CHRISTOPH (author) / ZIEMER PETER (author)

Publication date :

2018-12-25

Type of media :

Patent

Type of material :

Electronic Resource

Language :

English

Classification :

IPC:

B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16H Getriebe , GEARING