Abstract: A valve block for a refrigerant circuit comprises at least one refrigerant valve unit having at least one first refrigerant valve and at least one second refrigerant valve which are each configured at least to influence a refrigerant flow of the refrigerant circuit and comprises a valve control unit which is configured at least to control and/or to pilot at least some of the refrigerant valves of the refrigerant valve unit, wherein the valve control unit has a specifically actuatable camshaft for actuating a plurality of refrigerant valves and/or a plurality of pilot valves of the valve control unit, in particular for actuating at least one first pilot valve of the valve control unit to pilot the first refrigerant valve and for actuating at least one second pilot valve of the valve control unit to pilot the second refrigerant valve.

Abstract: A switchable coupling, in particular for vehicle auxiliary assemblies, is provided. The coupling includes an actuating system actuated electrically, mechanically, pneumatically or hydraulically between a driving element and an output element, and a switching element movable between switching start and end positions counter to the force of one or more resetting elements upon actuation of the actuating system. In the end position, the switching element connects the driving and output elements such that the output element and an auxiliary coupling connected thereto rotate with the driving element. After deactuation, locking bodies located on the auxiliary coupling produce an connection between the driving and output elements which continues to conduct torque between the driving and output elements. The connection is interrupted only when the rotational speed of the driving element falls below a limit value. The coupling does not require a permanent supply of power in the open or closed state.

Abstract: A switchable coupling, in particular for vehicle auxiliary assemblies, is provided. The coupling includes an actuating system actuated electrically, mechanically, pneumatically or hydraulically between a driving element and an output element, and a switching element movable between switching start and end positions counter to the force of one or more resetting elements upon actuation of the actuating system. In the end position, the switching element connects the driving and output elements such that the output element and an auxiliary coupling connected thereto rotate with the driving element. After deactuation, locking bodies located on the auxiliary coupling produce an connection between the driving and output elements which continues to conduct torque between the driving and output elements. The connection is interrupted only when the rotational speed of the driving element falls below a limit value. The coupling does not require a permanent supply of power in the open or closed state.