Abstract: A magnetic clutch for actuating a disconnect clutch includes an axis of rotation, an axially fixed stator, an axially movable armature, a torque-axial force converter unit with an armature side and a bearing side, and a rotary brake. The axially movable armature is axially retainable on the stator by a magnetic force from a power supply. The torque-axial force converter unit acts in an antagonistic manner to the magnetic force to hold the armature at an axial distance from the stator. The rotary brake is for effecting a rotational speed difference between the armature side and the bearing side. Other aspects of the disclosure include a disconnect clutch for an internal combustion engine in a hybrid drive train, a hybrid drive train, and a method for controlled closing of the disconnect clutch.

Abstract: The present disclosure relates to a clutch system having a clutch device and a fluid actuating device to engage and/or disengage the clutch device, the clutch device having at least one counter-pressure plate, at least one clutch cover with at least one diaphragm spring pivotably supported on the clutch cover at a swivel radius, and at least one contact plate which is movable in the axial direction of the clutch device by the diaphragm spring to frictionally clamp a clutch disk between the contact plate and the counter-pressure plate, wherein the diaphragm spring acts on the contact plate at an effective radius located outside the swivel radius in the radial direction of the clutch device and is actuatable at an actuation radius located inside the swivel radius in the radial direction by the actuating device.