Rubber-mounted engine bearing with magnetically actuated tongue - driven into gap between core of bearing and lower elastomeric lining of stirrup supporting rubber springs

摘要

The core (17) of the bearing is retained in a U-section stirrup (16) by two rubber springs (15), and screwed (24) to the engine support (11). The stirrup (16) has a rubber coating (33) and flanges (34) for fixing to the chassis (12). The springs (15) can vibrate vertically in gaps (25, 25a) limited by upper and lower elastomeric linings (14, 13). The tongue (18) can be pushed into the lower gap (25) by a magnet (20) to limit the amplitude of oscillation of the springs (15) at resonance. A diaphragm in the spring gap (25) underneath the mounting core partitions off an hydraulic chamber contg. an electrorheological fluid with an electrode to increase stiffness. The electrode is insulated against the retaining metal plate (23). ADVANTAGE - Stiffness of rubber springs can be varied or cancelled as region of resonant vibration is traversed. (Previously notified in 9105/Printed in week 9107) (6pp Dwg.No.1/3)