NOISE CONTROL FOR HIGH-SPEED DIESELS

This article describes a new high-speed direct injection diesel engine family, the MWM Sprint Series, which has been developed in response to more and more stringent noise emission and the increasing requirements of acoustic driving comfort. Its design focuses on: (1) noise control at source; (2) minimisation of secondary noise control measures; and (3) improvement of sound quality. One of the major design challenges for the Sprint family has been to meet several conflicting goals, because the engines were designed for application to vans, pick-ups, and light-duty trucks, where high engine performance, fuel economy, and driving comfort were all important. The engine was optimised at design stage by using analytical methods referring to calculations of the structure-borne noise of various components. Experimental results, obtained from tests in a semi-anechoic chamber, indicated that some components had great potential for noise reduction. This helped to determine the specific measures used to reduce noise in the engine and other parts of the vehicle. Using these low-noise features and an optimised engine design, the 1m noise level of the MWM Sprint 6.06T was reduced below 96dB(A) at rated conditions, which is an appropriate basis for attaining European Union and Brazilian pass-by noise limits. For the covering abstract see IRRD 881545.

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  • Corporate Authors:

    STERLING PUBLICATIONS LTD

    55A NORTH WHARF ROAD
    LONDON,   United Kingdom  W2 1XR
  • Authors:
    • FRISSE, H-P
  • Publication Date: 1996

Language

  • English

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Filing Info

  • Accession Number: 00725412
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Sep 26 1996 12:00AM