{"id":5216,"date":"2020-02-12T15:28:58","date_gmt":"2020-02-12T13:28:58","guid":{"rendered":"https:\/\/blog.febi.com\/?p=5216"},"modified":"2020-02-17T09:21:05","modified_gmt":"2020-02-17T07:21:05","slug":"nvh-in-the-car-whats-behind-it","status":"publish","type":"post","link":"https:\/\/blog.febi.com\/en\/nvh-in-the-car-whats-behind-it\/","title":{"rendered":"NVH in the Car: What\u2019s Behind It"},"content":{"rendered":"\n

NVH \u2013 this abbreviation is used again and again when it comes to annoying vibrations in the vehicle. But, what do these three letters stand for? They stand for \u201cN<\/strong>oise, V<\/strong>ibrations, and H<\/strong>arshness\u201d. This refers to all disruptive noises and vibrations that can be felt or heard during a car journey. Here is a more precise look into the three letters:<\/p>\n\n\n\n

Noise<\/strong> is defined\nas the unpleasant or disruptive sound that causes some sort of disturbance \u2013\nsuch as the rattling of a worn bearing. <\/p>\n\n\n\n

Vibrations <\/strong>are\ndefined as the off-putting, repetitive motion of an object, such as a tire out\nof balance. <\/p>\n\n\n\n

Harshness<\/strong> is a\ntad more difficult to define as this is very subjective. However, it could be\ndefined as a sudden, aggressive feeling, such as the sensation of driving\nthrough a pothole. <\/p>\n\n\n\n

Preventing NVH<\/strong><\/h2>\n\n\n\n

NVH reduction has become a technology in itself. The goal of\nvehicle manufacturers is to reduce NVH in their vehicles as much as possible\nwith the help of rubber-to-metal insulators and vibration damping measures.<\/p>\n\n\n\n

When replacing any\nmounting or insulator, it is important to consider what it is made of and how\nit is designed as these factors can dramatically affect the vehicle\u2019s natural\nfeel and driving behavior.<\/p>\n\n\n\n

Flexible vs. Hard<\/strong><\/h2>\n\n\n\n

The stiffness or rigidity of a vibration damper, for example, influences the natural frequency. The stiffer the vibration damper means it gives a higher natural frequency, giving a more dynamic, but \u201charsh\u201d feedback. The more flexible the vibration damper, the lower natural frequency. This leads to a more typical \u201cinsulated\u201d reaction. <\/p>\n\n\n\n

A part that has been manufactured with the incorrect\nmaterials will have a dramatic effect on the service life of any directly\nconnected components. For this reason, you should only rely on products in OE\nmatching quality. <\/p>\n