Patent Number: 6,637,271

Title: Method and apparatus for identifying and eliminating vibration symptoms in hydraulic clutch actuators

Abstract: The present invention provides a method and apparatus for identifying and eliminating vibration in a hydraulic clutch actuator. The vibration is identified by using transducers to characterize the vibrational characteristics of a power train of a vehicle. That characterization is used to program a shaker on a test bed to replicate the vibrations on the vehicle in a hydraulic clutch actuator. Different hydraulic dampers may be employed to eliminate the vibration. The preferred apparatus of the present invention includes a two piece hydraulic damper which may be opened as to insert different diaphragms for testing.

Inventors: Vennefron; Arlan (Adrian, MI), Hu; Jiamu (Rochester Hills, MI)

Assignee: Automotive Products (USA) Inc.

International Classification: F15B 7/00 (20060101); F15B 19/00 (20060101); F16D 25/00 (20060101); F16D 25/12 (20060101); G01N 003/32 (); F16D 031/02 ()

Expiration Date: 10/28/2011