VEHICLE ENGINE SUSPENSION HYDRAULIC MOUNT WITH ACOUSTIC FUNCTION Russian patent published in 2013 - IPC B60K5/12 F16F13/00 

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, top-rank cars exploiting acoustic vibrations for warning the drive about engine operating conditions. Hydraulic mount comprises top and bottom hydraulic chambers 5, 6 separated by baffle 7 including restricting channel 8, load bush 11, rubber-metal spring 4, air chamber 9 separated from bottom hydraulic chamber 8 by elastic diaphragm 10 and attachments 11, 12 to connect the mount with car body structural element and engine housing 2. Chamber 9 is communicated with driver cabin 19 and air tube 16, 18 housing separation diaphragm 14 and restricting regulator 21 with flow section varying depending upon engine load. Sound-transmitting absorbing baffle 20 made of porous material is arranged in tube 18 nearby its outlet end. Diaphragm 14 is arranged in extra hollow chamber integrated in tube 18. Low-frequency sound vibrations are directed from chamber 13 into engine compartment via restricting hole 25. Intrinsic frequency of free vibrations of diaphragm 14 in chamber 13 falls in the range of desirable warning sound.

EFFECT: higher quality of warning signal.

5 cl, 2 dwg