Fluid filled type engine mount

A fluid filled type engine mount comprising:

• a first mounting member fixable to one of a power unit and a vehicle body;
• a second mounting member mounted on another of the power unit and the vehicle body;
• a main rubber elastic body elastically connecting the first mounting member and the second mounting member;
• a partition member supported by the second mounting member;
• a pressure receiving chamber whose wall is partially constituted by the main rubber elastic body and having a non-compressible fluid filled therein;
• an equilibrium chamber whose wall is partially constituted by a readily deforming, flexible film and having the non-compressible fluid filled therein, the chambers being formed respectively to either side of the partition member;
• a first orifice passage and a second orifice passage respectively connecting the pressure receiving chamber and the equilibrium chamber to each other, with the second orifice passage being tuned to a frequency band corresponding to idling vibration which is a higher frequency band than the first orifice passage;
• and
• a valve member actuated by energization from an outside so that the second orifice passage is switchable between a communicating state and a cutoff state by the valve member;
• wherein a movable film is disposed in the partition member so that the second orifice passage connects the pressure receiving chamber and the equilibrium chamber via the movable film;
• wherein the valve member includes:
• a valve body formed of ferromagnetic material;
• an urging member for exerting urging force on the valve body so that the second orifice passage is placed in the cutoff state by the valve body when the urging member is in an initial state;
• and a coil disposed in an interior of the partition member, and
• wherein the coil is energized to generate a magnetic field by which the valve body is displaced in order to place the second orifice passage in the communicating state.