The acoustic development of vehicles is a very important step during its design to ensure its success in a competitive marketplace. In recent years, the advances on the noise and vibration control engineering in vehicles provided the production of quite and comfortable cars. The main noise and vibration sources in vehicles, i.e., engine, gearbox and exhaust systems, had its noise levels considered reduced, and, as a consequence, other noise sources became more easily observed.The noise generated by pumps of power steering systems is an example of this kind of problem. For the majority of automotive applications are used vane pumps. These pumps generate noise due the vane passing frequency. Basically, the hydraulic pump noise can be classified as Moan or Whine, regarding the operating condition.This work presents a methodology to approach the noise and vibration problem from hydraulic pumps of power steering systems. This methodology is based in experimental measurements, using sensors, and subjective evaluation, using a Sound Quality system. A new Sound Quality metric is presented, allowing the comparison between different types of pumps, defect detection and evaluation of noise control techniques to reduce the moan and whine noise.


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    Title :

    Analysis of Moan and Whine Noise Generated by Hydraulic Pumps of Power Steering Systems


    Additional title:

    Sae Technical Papers



    Conference:

    SAE Brasil 2003 Congress and Exhibit ; 2003



    Publication date :

    2003-11-18




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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