POWER UNIT MOUNTING DEVICE

摘要

PURPOSE:To reduce roll rigidity thus to reduce vibration by arranging auxiliary fluid chambers adjoining through resilient film while communicating with the atmosphere through an orifice onto the fluid chamber of mounts arranged at the opposite sides of the rotary shaft of power unit. CONSTITUTION:A mount 2 for resiliently supporting an engine 2 is arranged between the chassis 1 and the brackets 3 projecting approximately in horizontal from the opposite sidefaces of the crank shaft 2a of engine 2. Respective mount 4 is constructed such that the opening through the upper face of tubular case 5 is enclosed with resilient wall 6 such as rubber while non-compressive fluid is encapsulated in a fluid chamber 8 defined by enclosing the opening through underface with thin resilient film 7. The fluid chamber of respective mount is communicated through a conduit 10. Stopper plates 11, 12 are arranged to limit vertical deformation of resilient film 7 within predetermined level where the underside stopper plate 12 is provided to define an air-chamber 14 communicatable through an orifice 15 with the atmosphere between the resilient film 7.