How Coach Manufacturers Have Integrated 2007 Engine Technology

This article describes the necessary changes made to coach body and chassis designs as the new 2007 Environmental Protection Agency-approved (EPA) low-emission engine packages do not fit into the extant engine compartments. New diesel engines are required to provide a 50 percent reduction in nitrogen oxide and a 90 percent reduction in soot and ash and often utilize a diesel particulate filter (DPF) to affect at least part of this change. One company needed to go so far in altering their design as to reconfigure the interior of the vehicle without reducing capacity. While this first company installed the DPF vertically, another coach manufacturer decided it best to place the filter underneath the vehicle, in order to provide ease of access. A third manufacturer required no structural alterations to their fleet, and instead simply replaced their muffler with the DPF. Other more minor systems to provide cleaner diesel engines are also described throughout.


  • English

Media Info

  • Media Type: Print
  • Features: Photos;
  • Pagination: pp 46-48
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01047188
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Apr 25 2007 3:42PM