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Accuracy Enhancement of Transfer Case End-of-Line Vibration Testing based on Vehicle Noise and Vibration Characteristics
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DOI：10.3795/KSME-A.2026.50.3.147.png)
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Abstract
En 中文
In this study, we optimized an end-of-line (EOL) testing protocol to detect vibration by analyzing the noise and vibration characteristics of hypoid gears in the transfer case of an on-demand all-wheel drive (AWD) vehicle, using data from real-world driving tests. Noise, vibration, and torque were measured under various driving conditions. The EOL inspection conditions were designed based on the actual torque levels observed within the speed range in which gear whining noise was prominent. When these torque conditions were applied to the EOL vibration test, the results showed a higher correlation with vehicle noise, vibration, and harshness (NVH) characteristics than did conventional inspection settings. These findings demonstrate that the reliability of the inspection process was improved.
Keywords:
Transfer Case
On-Demand AWD
Whine Noise
End of Line(EOL)
Hypoid Gear
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