NVH refinement is an important aspect of the powertrain development process. Powertrain NVH refinement is influenced by overall sound levels as well as sound quality. The sound quality and hence the level of powertrain NVH refinement can be negatively affected by the presence of excessive impulsive noise. This paper describes a process used to develop an understanding of impulsive powertrain noise. The paper begins with an introductory discussion of various sources of impulsive noise in an automotive powertrain. Following this, the paper outlines a process for identifying the source of the impulsive powertrain noise using examples from case studies. The remainder of the paper focuses on certain examples of impulsive noise such as Diesel knocking noise, injector ticking, impulsive cranktrain noise, and gear rattle. For these examples, the development of key objective metrics, optimization measures, and improvement potential are examined. Where possible, the metric development process considers correlation with subjective studies. The optimization process outlines the various engineering possibilities to control the specific impulsive powertrain noise issues. Finally, the findings from the discussed studies are summarized and appropriate conclusions are drawn with respect to understanding, characterizing, and solving impulsive powertrain noise issues.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Aspects of Powertrain Noise with Special Emphasis on Impulsive Noise


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2007 Noise and Vibration Conference and Exhibition ; 2007



    Publication date :

    2007-05-15




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Aspects of powertrain noise with special emphasis on impulsive noise

    Govindswamy,K. / Wolff,K. / Heuer,S. et al. | Automotive engineering | 2007


    Powertrain Level Target Setting for Impulsive Noise based on Interior Noise Levels

    Parbat, Aniket / Govindswamy, Kiran / Tousignant, Todd | SAE Technical Papers | 2015


    NVH refinement of diesel powered sedans with special emphasis on diesel clatter noise and powertrain harshness

    Pollack,M. / Govindswamy,K. / Wellmann,T. et al. | Automotive engineering | 2007


    NVH Refinement of Diesel Powered Sedans with Special Emphasis on Diesel Clatter Noise and Powertrain Harshness

    Pichot, Fabienne / Eisele, Georg / Govindswamy, Kiran et al. | SAE Technical Papers | 2007