If exhaust particulate traps are ever to be commonly used in lorries and buses, they will need to be able to pay for themselves, or at least not cost too much, and be compatible with ordinary diesel fuel. In its March 1999 Budget, the UK Government doubled the vehicle excise duty (VED) concession for engines with low particulate emissions from #500 to #1000. It also included another big duty incentive, which stimulated a massive switch to the ultra-low-sulphur diesel (ULSD) fuel on which some particulate traps depend. However, it was found that standard Euro-2 diesel engines could just qualify for the #1000 VED decrease without using any exhaust after-treatment. The Department of the Environment, Transport and the Regions (DETR) has just produced a revised scheme, designed to overcome this problem. The March 2000 Budget is expected to lower the qualifying particulate limit for the VED decrease from the current 0.08g/kWh to the Euro-4 value of 0.03g/kWh. The British particulate trap manufacturers Eminox and Wasey are among those racing for a commercially viable exhaust after-treatment system, which can digest the whole range of diesel emissions in one integrated unit. This article discusses the technical principles involved, and reports on progress by both British and European manufacturers.

  • Availability:
  • Corporate Authors:

    Institute of Road Transport Engineeers

    1 Cromwell Place
    London SW1 25F,   England 
  • Authors:
    • WILCOX, D
  • Publication Date: 2000-2


  • English

Media Info

  • Pagination: p. 24-6
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00790356
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Apr 11 2000 12:00AM