Method of supressing vibrations of an actuation element of a hyd

Details Method of supressing vibrations of an actuation element of a hyd Method of supressing vibrations of an actuation element of a hyd

1996-12-31

1998-10-06

Richter, Sheldon J.

Power plants

Pressure fluid source and motor

Having means controlling or attenuating shock vibration,...

92 60, 192 30V, F16D 2512, F16L 5504

Patent

active

058160469

ABSTRACT:
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.

REFERENCES:
patent: 3581773 (1971-06-01), Warren
patent: 4301908 (1981-11-01), Fukuda
patent: 4924992 (1990-05-01), Romig
patent: 4998609 (1991-03-01), Nix et al.
patent: 5070983 (1991-12-01), Leigh-Monstevens et al.

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