Emergency fluid pressure supply for a clutch system and vehicle drive line equipped with this emergency fluid pressure supply.

Drive string comprises pressure medium emergency supply units (606, 608) assigned to coupling devices (102, 104) for an emergency operation chamber depending on an electrical energy supply and/or not depending an ordered function of an electronic control/regulating switch. Preferred Features: The coupling devices are provided for an operation under the action of the operating medium, in which the operating medium is fed to the coupling device. The pressure medium emergency supply units prepare the pressure medium based on the pressure medium prepared by a pump arrangement.