Patent ID: 6361031
Filing Date: 2002-03-26
Classification: F16F

Abstract:
Adaptive hydraulic engine mount for mounting an engine on a vehicle frame comprising a housing defining a chamber therewithin, said housing including an elastomeric element for controlling engine vibrations, a pumping chamber and a reservoir defined within said housing, said pumping chamber and said reservoir being filled with damping fluid, a damping channel communicating the pumping chamber with the reservoir and permitting fluid to communicate between the pumping chamber and the reservoir during predetermined engine vibratory conditions to effect damping, a decoupler for coupling and decoupling communication between said pumping chamber and said reservoir through said damping channel, said decoupler including a control cavity, a pressure responsive member responsive to pressure in said control cavity, and a selectively operable control valve for controlling communication with the control cavity, said pressure responsive member responding to the control cavity to change the engine vibratory conditions at which coupling and decoupling occurs, said control valve being operable from a first condition communicating said control cavity to atmosphere and a second condition closing communication with said cavity, and a flexible diaphragm separating said reservoir from an atmospheric chamber defined within said housing, said control valve controlling communication between said control cavity and said atmospheric chamber.