Mounting Systems for Transverse Front Wheel Drive Powertrains with Decoupled Pitch Damping

摘要

A powertrain mounting system with a decoupled hydraulic bushing device as a torque reacting element. An elastic element of the bushing mount vibrates in response to powertrain pitch torque. At high vibration amplitude of the elastic element, high hydraulic damping is provided via a main liquid reservoir, bounce inertia track and bellowed secondary liquid reservoir, with a decoupler fluid passage being passively disabled. At low vibration amplitude of the elastic element, minimal hydraulic damping is provided via a decoupler system.