Fahrzeugtechnik Ebern Gmbh

Karsten Paeth

Helmut Rugheimer

A method of suppressing vibrations of an actuation element of a hydraulic force transmission apparatus, especially a hydraulic clutch actuation system in an automobile, and an auxiliary vibrator for carrying out the method, are disclosed. The force transmission apparatus possesses a transmitter cylinder connected to the actuation element, and also a receiver cylinder connected to that cylinder by a liquid column, by which receiver cylinder a low-frequency excitation vibration is transmitted to the liquid column, which propagates in the latter as a low-frequency pressure pulsation. According to the invention, the low-frequency pressure pulsation excites the auxiliary vibrator provided in the liquid column in such a manner that this vibrator vibrates with its intrinsic frequency, which is higher than the frequency of the low-frequency pressure pulsation, so that the auxiliary vibrator induces, in the liquid column, a higher-frequency pressure pulsation, which the vibratory system consisting of transmitter cylinder and actuation element cannot follow. The auxiliary vibrator possesses a freely vibrating diaphragm, which is clamped in a housing in order to form its base and/or top.

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Ebern, Germany

Karsten Paeth