Chrysler Corporation

Daimlerchrysler Corporation

James C Rich

Del C Schroeder

David G Speth

Phillip D Cruise

A vehicle suspension system is provided including a trailing arm which is adapted to be pivotally connected to a frame of the vehicle. A wheel assembly is mounted to a first end of the trailing arm and a torsion element is integrally mounted within the trailing arm. A crank arm is provided having a first end mounted to the torsion element and a second end which is substantially fixed against movement in a vertical direction. As the trailing arm moves in a vertical direction, the crank arm provides torsion to the torsion element which acts as a spring for the vehicle suspension. By substantially mounting the entire suspension system directly below the vehicle frame rails, increased space is available between the wheels for luggage, fuel and spare tire storage. The rear suspension package is substantially reduced in both size and weight.

Rear suspension using a torsional spring integral with trailing arm

An automobile includes a plastic body and a steel frame bonded to the plastic body. The rear suspension system of the automobile includes a suspension arm coupled to a rear wheel. An arm shaft extends transversely inwardly from the arm and is embedded in a rubber cartridge press-fit into the frame, to thereby attenuate motion of the suspension arm. A horizontally-mounted longitudinally-oriented shock absorber further interconnects the suspension arm and frame. This shock absorber orientation avoids transferring suspension system loads to the plastic body.

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White Lake, MI, United States of America

James C Rich