This paper describes the development of noise control treatments for two heavy-duty diesel trucks. Noise levels are reduced to 72 dBA when measured according to the SAE J366b Recommended Practice. The treatments, comprising primary dual exhaust systems and partial engine enclosures, reduce exhaust back pressures by 0.3 to 0.4 in. Hg and add about 2 1/2 percent to the tractor weights. Cooling tests show that engine oil, engine coolant, and air-to-boil temperatures meet manufacturers' specifications. Maintenance studies indicate that about 5 min is required to remove and replace three key access panels.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Noise Reduction of Heavy-Duty Trucks


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Passenger Car Meeting & Exposition ; 1981



    Publication date :

    1981-08-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Noise reduction of heavy-duty trucks

    Bender,E.K. / Bronsdon,R.L. / Remington,P.J. et al. | Automotive engineering | 1981


    Reduction of cooling system noise on heavy-duty trucks

    Takeda,K. / Isuzu Motors,JP | Automotive engineering | 1980



    An approach to low noise heavy duty trucks

    Kogure, T. / Takeda, K. / Kurahashi, M. et al. | Tema Archive | 1985


    An approach to low noise heavy duty trucks

    Kogure,T. / Takeda,K. / Kurahashi,M. et al. | Automotive engineering | 1985