Device for driving a plurality of hydraulic shift cylinders and hydraulic supply system for a twin-clutch transmission
AssigneeLuK Lamellen und Kupplungsbau Beteiligungs KG
InventorsEric Müller, Manfred Homm
Life of this patent
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Abstract
A device for driving a plurality of hydraulic shift cylinders, especially shift cylinders for shifting gears of a twin-clutch transmission, includes a first slide valve having a control intake to which control pressure is applied, a system pressure intake to which system pressure is applied, two outlets and at least one return outlet, the one outlet being connected to the system pressure intake and the other outlet being connected to the return outlet, as desired, and a valve device connected to the outlets of the slide valve via which the shift cylinders may be selectively actuated.
Claims12
A device for driving a plurality of hydraulic shift cylinders (SZ1-SZ8) for shifting gears of a twin-clutch transmission, comprising:
- a first hydraulic slide valve (64) having a control intake (96) to which fluid is applied to create control pressure;
- a system pressure intake (94) to which system pressure is applied;
- first and second outlets (100, 102) and at least one return outlet (98), wherein the first outlet is connected to the system pressure intake and the second outlet to the return outlet as a function of the pressure applied to the control intake;
- and
- a valve device (66, 68, 104, 116) connected to the first and second outlets of the slide valve by means of which the shift cylinders may be selectively actuated.
Dependencies are inferred from the claim text.