What is NVH Performance?

[GenevieveAnn]

NVH performance refers to Noise, Vibration, and Harshness. Introduction to Harshness in NVH performance: Harshness denotes the quality of noise and vibration, describing the human body's subjective perception of vibration and noise, which cannot be directly measured by objective methods. The greater the system stiffness, the larger the transient vibration amplitude of the vehicle body, leading to more severe impacts. Simultaneously, an increase in natural frequency accelerates vibration attenuation, improving the damping effect. Automotive NVH characteristics: In the study of automotive NVH characteristics, the multi-body system dynamics method is primarily applied to the modeling and analysis of the chassis suspension system and steering transmission system in low-frequency ranges. Researching automotive NVH characteristics first requires the use of CAE technology to establish a vehicle dynamics model, for which several relatively mature theories and methods already exist.

[LaLena]

NVH performance refers to the quietness and comfort we experience while driving. For me, the most annoying things on long drives are body thumping noises or wind noise, which are collectively referred to as noise, vibration, and harshness. Whether commuting to work or taking family trips, if the interior is noisy with engine roaring and seats shaking, it can be mentally exhausting. However, with good NVH, the tires roll smoothly, the engine sound is gentle, and the cabin is well-insulated—listening to music while driving leisurely significantly reduces fatigue. Factors affecting NVH include chassis design, engine damping, and material sealing. For example, premium SUVs add soundproofing foam to absorb wind noise. I believe this is the core of comfort. When choosing a new car, testing it on bumpy roads to assess NVH quality is crucial, as it directly impacts driving quality. Good design turns ordinary driving into an enjoyable experience.

[MacJoy]

From a technical perspective, NVH performance relates to a vehicle's control level over noise, vibration, and harshness. When researching new cars, I've found that engine balance, suspension tuning, and sealing all affect it. For example, engine operation generates vibrations, which become severe if the mounts are worn; wind noise enters through door gaps; and uneven tires exacerbate bumpiness. Cars with poor NVH produce a buzzing sound at high speeds, distracting the driver. Improvement measures include adding soundproofing materials or upgrading balance shafts—many hybrid vehicles offer superior NVH with silent engine starts. In practice, it enhances ride comfort by smoothing out bumps. I recommend checking engine mounts and tire-wheel pairs during maintenance to prevent minor issues from escalating. Choosing a car with high NVH ratings ensures a more worry-free experience.

[McEmmett]

For family cars, I prioritize NVH performance the most, as my child often sleeps in the car and I don't want them to be woken up. Loud noises or excessive vibrations can make kids fussy, while a rough ride can cause motion sickness for the elderly. Driving a car with excellent NVH for family trips—where the engine hum is minimal, the cabin is well-insulated, and the ride is smooth with little sway—makes conversations and music enjoyable for everyone. If the NVH is poor, the howling wind on highways and the rumbling tire noise can ruin the atmosphere. This performance depends on chassis stiffness/softness tuning and door seal designs, with some family-oriented MPVs specifically optimized to reduce tire noise. I always choose quieter models to create a comfortable space for my child, avoiding the hassle of long journeys. Simply put, it's about making every trip relaxed and enjoyable.