Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Daimler-benz Ag

Dieter Messerschmidt

Hermann Hiereth

Hermann Heireth

A centrifugal clutch, and a method of producing same, include driving inner runner on whose circumference a plurality of resilient clutch elements are arranged to move radially outwards with increasing speed and, at clutch speed, to bear against an inner surface of a drum-shaped outer runner for driving the outer runner. In order to assure low-wear operation even at high clutch speeds, the clutch elements are constructed integral with a rotating ring and form, together with the ring, an intermediate runner. Segments of the elements extend from the ring in the axial direction of the clutch.

Centrifugal clutch and method of producing same

A process for the load-dependent control of a hydraulic drive for a compressor arranged at an internal-combustion engine, the compressor being driven by a hydraulic motor that, in turn, is acted upon by pressure from a hydraulic pump, the internal-combustion engine itself driving the hydraulic pump. In order to ensure a relatively high compressor speed as early as during the idling operation of the internal-combustion engine, and have available an optimal torque for a positive load change, while keeping minimal the additional fuel consumption required for the hydraulic drive, during the idling operation of the internal-combustion engine, the hydraulic pump is adjusted into the full-delivery position and the hydraulic motor is adjusted into the minimum intake position. Upon a subsequent positive load change, after an indicated hydraulic motor control pressure is reached, the hydraulic motor is guided into the maximum intake position, and after an indicated hydraulic pump control pressure is reached, the hydraulic pump is guided into the direction of the minimum delivery position. After an indicated charging pressure limit is reached, the hydraulic drive is disconnected from the compressor. Also described is an arrangement for carrying out this process.

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Korntal, Germany

Dieter Messerschmidt