Hydraulic assembly, friction clutch and method for operating a friction clutch

A method for operating a friction clutch, the method comprising:

• moving a pressure plate against a consumer-side friction disk by a stepped piston, wherein the stepped piston comprises an auxiliary chamber, a first working chamber and a second working chamber, a movement for engaging the friction clutch takes place in at least two steps, the working piston in a first step with a same drive power of a drive unit, occurs faster than in a second step,
• a first step comprises directing the fluid into a second working chamber, and
• a second step comprises, additionally directing the fluid into the first working chamber, wherein the second working chamber is smaller than the first working chamber, and wherein
• in the second step, switching the control valve to a first valve position allowing passage and
• in the first step, switching the control valve to an at least partially blocking second valve position.

A hydraulic assembly for driving a friction clutch, the hydraulic assembly comprising:

• a hydraulically drivable piston including a working piston with a piston chamber, the working piston is displaceably arranged in the piston chamber and divides said piston chamber into a first working chamber and an auxiliary chamber, and the working piston is mechanically connected to an auxiliary working piston or comprises such an auxiliary working piston that is driveable hydraulically via a second working chamber;
• a pump for driving the piston;
• a control valve arranged in at least one line path between at least one of the first or second working chambers of the piston and the pump;
• a first line path leads via a first supply line from the pump to the second working chamber and a second line path leads from the pump via the first supply line, the control valve and a second supply line to the first working chamber;
• the piston has a working plunger guided through the auxiliary chamber by which the friction clutch is adapted to be acted upon mechanically;
• and
• the first line path and the second line path are connected via a first line portion of the second supply line and the control valve, the control valve has at least first and second valve positions, and in at least one of the first or second valve positions the first line portion of the second supply line is at least partially blocked.