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What does NVH mean in a car?

1 Answers

DeBraxton

07/30/25 2:22am

Automotive NVH refers to the English abbreviation for Noise, Vibration, and Harshness. It is a comprehensive indicator for measuring the quality of automobile manufacturing, providing car users with the most subjective and superficial experience. NVH issues in vehicles are one of the concerns for major automobile manufacturers and component suppliers in the international automotive industry. The following are ways to improve automotive NVH characteristics: 1. First, control the vibration and noise sources. This requires improving the structure of components that generate vibration and noise, enhancing their vibration characteristics, and avoiding resonance. 2. Improve the balance of rotating components. 3. Enhance the machining precision and assembly quality of components to reduce impacts and friction between relatively moving parts. 4. Improve the flow conditions of gases or liquids to avoid the formation of vortices. 5. Optimize the body structure to increase stiffness; apply sound waves with amplitudes equal to but phases opposite to those of the noise sources, etc.

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