Shock absorbing apparatus for an engine

Claim 1

An engine shock absorbing apparatus comprising: a casing containing a liquid; a partitioning member having an opening therein along its length fastened to said casing and to one of either an engine or an automotive body, thus dividing the inside of said casing into two chambers; said opening extending along a majority of said partitioning member length; elastic walls provided on a wall section of both chambers for varying the capacity of said chambers by elastic deformation of said elastic wall; a mounting member which is fixed to the other side of an engine or an automotive body and so supported on the elastic wall of one of said both liquid chambers as to be changed in position relative to said partitioning member; an elastic stopper which is fitted to one side of either said mounting member or partitioning member outside of said liquid chambers, and is so designed as to contact the other side of said mounting member or partitioning member when said elastic wall is displaced beyond a predetermined extent; a variable orifice device which is inserted into said partitioning member so as to rotate around the axis of said partitioning member separating said both liquid chambers from each other, is provided with a communication passage for effecting the communication between both liquid chambers, and is designed to vary the manner in which both liquid chambers communicate with each other in accordance with the angle of rotation of said orifice device; said communication passage having an oblate cross section whose axis is parallel to the axis of said variable orifice device and whose length is coextensive with said opening whereby free communication is allowed between said chambers when said communication passage and said opening are aligned; rotary drive means which is set outside of said casing, and controls the angle at which said rotary valve is turned, thereby adjusting the opened extent of said variable orifice device; roll-detecting means for detecting the rolling tendency of the engine; and a control circuit which is electrically connected to said rotary drive means and roll detecting means and sends forth a control signal to said rotary drive means in accordance with the contents of a signal delivered from said roll-detecting means.