Avl List Gmbh

Avl Commercial Driveline & Tractor Engineering Gmbh

Stefan Kuntner

Gebhard Woentner

The invention relates to a hydraulic circuit having a first hydraulically actuable clutch that is closed in a rest state and a second hydraulically actuable clutch that is closed in the rest state, wherein the hydraulic circuit is configured in such a way that a hydraulic medium present in a main pressure line can be loaded with a working pressure by a pressure generating device and/or a pressure accumulator, and the hydraulic medium can be discharged for pressure dissipation via a main return line into the return reservoir. In some embodiments, the hydraulic circuit has a first distributor pressure line and a separate, first collector return line for the hydraulic supply of a first part circuit and at least one separate, second distributor pressure line and at least one separate, second collector return line for the hydraulic supply of a second part circuit, and the first clutch is assigned to the first part circuit and the second clutch is assigned to the second part circuit.

Hydraulic circuit, torque transmission device having a hydraulic circuit, and method for operating a hydraulic circuit

The invention relates to a dual clutch transmission () for a motor vehicle, having an input shaft () and a main shaft (), wherein the input shaft () can be connected to a first counter shaft () via all engageable first clutch () and to a second counter shaft () via an engageable second clutch (), wherein the first counter shaft () and the second counter shaft () can each be drivingly connected to the main shaft () via at least one gear stage (ZA, ZA, ZA, ZA, ZA, ZR) which can be selected via a selector device (), and wherein a range group transmission () is arranged between the main shaft () and an output shaft () of the dual clutch transmission. High flexibility and variability in the arrangement and design of the permanent brake device and a powershift range group shift is made possible if at least one counter shaft () can be drivingly connected directly to the output shaft () via at least one gear stage (ZA) bypassing the range group transmission (), and if said counter shaft () or an intermediate shaft () that can be connected to said counter shaft () can be or is drivingly connected directly or via a further gear stage (ZA) to a permanent brake device ().

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Asten, Austria

Stefan Kuntner