Freudenberg-nok General Partnership

Rod G Hadi

Shahram Tousi

Andrew James Kropp

Bjoern Oppermann

A hydraulic bushing forms a mount between a first component and a second component by including a spring portion connected between a core and an inner structure. The spring portion includes a first spring portion for defining hydraulic fluid cavities and a fluid channel extending between the cavities, with the cavities located about a first portion of the core, and a second spring portion formed of microcellular polyurethane about a second portion of the perimeter. The first spring portion and the second spring portion are located in parallel to one another. In this way, vibrations of a load transferred through the hydraulic bushing between the core and the inner support structure can be damped at a predetermined low frequency by the rubber with hydraulic fluid cavities, while still allowing for isolating of higher frequencies by the microcellular polyurethane portion of the spring.

Hydraulic bushing with springs in parallel

An engine mount bushing for use on a motor vehicle. The bushing includes a hard case, and a core located within that case. The bushing further includes an elastomer isolator contacting the core and case. The bushing also includes a foamed elastomer isolator contacting the core, the case and the elastomer isolator.

Growing community of inventors

South Lyon, MI, United States of America

Rod G Hadi