PURPOSE: To improve swirl performance of a vehicle in a rolling region, by a method wherein the mounting position of the upper end of a shock absorber is moved through deformation of a suspension bush for an upper supporter by means of a fluid pressure.
CONSTITUTION: An resilient member 18 of a suspension bush 19 is divided into an inner and an outer side to form two hollow parts 29 and 30, and incorporates an inner hollow bag body 31 and an outer hollow bag body 32 which are made of expandable material such as rubber. Each of pressure oil hoses 35 connected to each of the hollow bag bodies 31 and 32 through a mouth ring 33 and a hose clamp 34 which are attached to a retainer plate 17 of the suspension bush 19. When outputs from a car speed sensor, which changes an output according to a car speed, and a steering sensor, which changes an output depending upon the rotary angle of a steering wheel, correspond to the roll region of a car, a pressure fluid is supplied to the outer hollow bag body 32, and a pressure fluid in the inner hollow bad body 31 is returned to a reservoir tank to bring it into a negative camber.
YOKOYA YUUJI
HANAI KIYOSHI
OOHASHI KAORU
