A fluid-filled active damping apparatus having a pressure receiving
chamber divided by a partition member into a primary fluid chamber and an
auxiliary fluid chamber. The partition member houses a movable plate
extending entirely across between opposing faces of upper and lower
through holes of the partition member. Elastic projections of the movable
plate from its outer peripheral portion are held sandwiched between upper
and lower divider plates of the partition member, so that the movable
plate is exposed to the primary fluid chamber through the upper through
hole and to the auxiliary fluid chamber through the lower through hole. A
connecting gap is formed between the upper and lower divider plates and
the peripheral portion of the movable plate where the elastic projections
have not been formed, to connect the primary and the auxiliary fluid
chambers through the through holes and the connecting gap.