Design of Size Flexible and Leak Preventing Hydrobushing
School of Engineering
Padnos College of Engineering and Computing
The success of hydromount in automotive powertrain application motivates the industry to develop the suspension bushing with the same damping generating mechanism as hydromounts: hydrobushing. The vehicle equipped with hydrobushing in North America market was seen in late 90's. The generic problems of those early generations of hydrobushing are its size inflexibility (normally in proximity of 80 mm in diameter) and its poor reliability due to fluid leaking. This paper introduces a hydrobushing design whose inertia track is placed outside of an aluminum armature therefore the inertia track becomes independent with the main rubber element. As a result, the tri-axis static stiffness of the bushing can be designed the same way as the conventional rubber bushing, which makes it size flexible. A thin rubber layer coated outside of the armature is compressed after the outer can is assembled. This compressed rubber serving as the tight sealing along with the o-ring style design feature added in the armature structure makes the proposed design reliable in leak prevention. The design procedure, which involves in the determination of overall dimensions, rates and performance, is introduced based on a set of assumed criterion.
World Conference on Engineering 2011
Lu, Min, "Design of Size Flexible and Leak Preventing Hydrobushing" (2011). Faculty Scholarly Dissemination Grants. 362.