A review of the technical issues surrounding methods for evaluating heavy truck suspension road-friendliness has been undertaken. There is overwhelming evidence that low sprung mass frequency and adequate viscous damping are central to achieving road-friendliness. Of these two parameters, viscous damping is the most difficult to measure and it is highly dependent on the test method used. Damper performance is subject to change during the life cycle of the suspension due to component wear. A simple method for evaluating damper condition will be required to ensure proper suspension performance during the life of a vehicle. The criteria defining suspension road-friendliness in Directive 92/7/EEC were found to be consistent with the general conclusions of research conducted during the past decade. However, the test procedures outlined by the directive appear to lack sufficient technical depth to prove compliance with the criteria. (a) For the covering entry of this Conference, see IRRD abstract no. 868186.


  • English

Media Info

  • Features: References;
  • Pagination: 6 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00717826
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 0-7310-3630-1
  • Files: ITRD, ATRI
  • Created Date: Mar 20 1996 12:00AM