Mechanical combustion-engine-driven fluid pump

10:

• The mechanical combustion-engine-driven fluid pump as recited in claim 9, wherein the permanent magnet element is arranged so as to be shiftable in an axial direction.

11:

• The mechanical combustion-engine-driven fluid pump as recited in claim 9, further comprising a passive pretension element configured to pretension the permanent magnet element into the engaged position.

12:

• The mechanical combustion-engine-driven fluid pump as recited in claim 9, further comprising a magnet chamber arranged radially inwardly of the at least two radial input clutch disks and the at least two radial output clutch discs, wherein the permanent magnet element is arranged in the magnet chamber so as to move between the engaged position and the disengaged position.

13:

• The mechanical combustion-engine-driven fluid pump as recited in claim 12, wherein the at least two radial clutch liquid gaps comprise radial planes which intersect with the permanent magnet element in the engaged position.

14:

• The mechanical combustion-engine-driven fluid pump as recited in claim 13, wherein the magnet chamber comprises a first magnet chamber wall which comprises a longitudinal engagement section made of a non-ferromagnetic material, the longitudinal engagement section being configured to intersect with the radial planes of the at least two radial clutch liquid gaps.

15:

• The mechanical combustion-engine-driven fluid pump as recited in claim 13, wherein the magnet chamber comprises a second magnet chamber wall which comprises a longitudinal disengagement section made of a ferromagnetic material so as to shield the magnetic field of the permanent magnet element with respect to the at least two radial clutch liquid gaps in the disengaged position of the permanent magnet element.

16:

• The mechanical combustion-engine-driven fluid pump as recited in claim 9, wherein the actuator is a vacuum actuator.