Automotive NVH parts and products for the suppression of noise, vibration and harshness (NVH) in vehicle applications can be roughly divided into two categories:
- Parts for shock absorption and vibration dampening
- Parts for soundproofing and sealing
In each of these applications, NVH parts and products constructed from elastomers and other advanced materials are used to improve vehicle performance and enhance occupants’ experience.
Materials used for the fabrication of automotive NVH parts and products
Due to their high density and ability to absorb sound and vibration, elastomeric rubbers are a preferred material for NVH parts and products used in vehicle applications. Open and closed cell microcellular foams and sponges possess excellent sealing and sound deadening characteristics. Plastic materials are excellent for reducing the impacts from shocks and bumps and reducing the transfer of sound through vehicle structures. In some cases, laminate and composite materials can be sued which combines the NVH-suppressing characteristics of multiple materials.
Automotive NVH parts and products for shock absorption and vibration dampening
A chassis is the supporting frame of the vehicle. While a strong chassis helps keep a vehicle rigid, a chassis is exposed to shocks which can give rise to vibrations. These vibrations can stress and degrade vehicle parts and systems, and be transmitted into the cabin where they diminish the user experience.
Automotive NVH parts and products can be fashioned to absorb shocks and suppress vibration. These parts work by absorbing the energy of shocks and dampening vibrations. These parts can be made from traditional and advanced elastomers, foams and sponges, laminates and composites, and increasingly, plastics. Vehicle structures and systems that can incorporate the use of NVH parts and products for shock absorption and vibration dampening include the following:
- Chassis and frame
- Support structures
- Suspension system
- Brake system
- Transmission and powertrain
- Fuel system
- Vehicle HVAC system
Automotive NVH parts and products for soundproofing and sealing
NVH parts and products for soundproofing and sealing are used primarily to block the transmission of sound into the vehicle cabin interior. In some applications, such as seals for windows and doors, these parts and products also provide protection against the ingress of moisture and the elements into the vehicle cabin.
Because noise is a product of vibration, NVH parts and products are used to suppress vibration at its source where it could be transmitted into the vehicle cabin. As an example, a leading OEM in the luxury car segment turned to CRG for an NVH part designed to eliminate vibration and cabin noise resulting from the shaking of the windshield washer fluid reservoir bottle within its holder, under the hood.
Automotive NVH parts and products from CRG
CRG offers a wide range of parts and products designed to absorb unwanted noise and vibration. Our components are manufactured from tested NVH materials and produced under controlled conditions. Our wide portfolio of materials combined with our 30-plus years’ experience in supporting OEM vehicle programs allows us to service almost any vehicle NVH application. Examples of automotive NVH parts and products we have supplied include: fuel tank cushions and isolator pads; door check seals; noise-reducing window and door seals; radiator dampening pads; rear hatch dampening bumpers; and more.
If you are sourcing NVH parts and products for a vehicle program, CRG is ready to work with you. All aspects of our operations conform to the ISO 9001:2008 standard, and we have a proven capability in supplying products which meet ASTM D2000 line call-outs, as well as the material specifications of major OEM’s, including those of General Motors, Ford, Chrysler, Nissan, Mazda, BMW, Honda, Toyota, Volvo, and Mercedes-Benz. In those cases where a new specification is required, we work with our supply chain partners to develop an appropriate solution that meets or exceeds all requirements. To find out more about the automotive NVH parts and products CRG can supply, please contact our sales department at email@example.com.