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Technical Paper

Cord-Reinforced Composite Exhaust Hangers for Optimizing NVH, Durability and Positioning in Automotive Applications

2012-04-16
2012-01-0803
In connecting an exhaust pipe system to the body of a vehicle, a compromise between a soft attachment for good noise, vibration and harshness (NVH) behavior and a rigid attachment for optimum exhaust system positioning and hanger life is necessary. Classical exhaust system hangers, made entirely of rubber, cannot meet these conflicting requirements. Technology using reinforcement cording and woven fabric scrim has been used in automotive tires for many years, and scrim-reinforced rubber has been used in coolant hoses, steering couplings (“rag joints”), simple exhaust pipe isolators/hangers and other components. The presented research has culminated in a new technology in exhaust system hanger solutions comprised of a composite elastomeric rubber material reinforced with laid-in directional polyester cording.
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