SYSTEMATIC APPROACH TO HGV FUEL ECONOMY

Besides bad driving techniques, penalties of poor fuel consumption can also be brought about by the wrong specification for power unit and transmission for particular gross lorry weights. Specific fuel consumption (sfc) must be examined under various load conditions. A method is shown of adapting gear ratios to sfc maps in order to use the most efficient engine operating range. The volvo F12 can be driven 5-8 km/h faster for the same fuel consumption by virtue of a very low sfc achievable at part load. The effect is shown on reducing fuel consumption of reducing aerodynamic drag by rounding the corners of an articulated box van. Tests have shown that cab roof mounted deflectors should be operator-adjustable rather than fixed due to the critical nature of their position.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03076490
• Corporate Authors:

  Mechanical Engineering Publications Limited

  P.O. Box 24, Northgate Avenue
  Bury St Edmunds, Suffolk IP32 6BW,   England 
• Publication Date: 1980-8-9

Media Info

• Features: Figures; Photos;
• Pagination: p. 64
• Serial:
  • AUTOMOTIVE ENGINEER
  • Volume: 5
  • Issue Number: 4
  • Publisher: Institution of Mechanical Engineers
  • ISSN: 0307-6490

Subject/Index Terms

• TRT Terms: Aerodynamics; Drag; Fuel consumption; Gears; Loads; Trucks; Vehicle detectors
• ITRD Terms: 5492: Aerodynamics; 5911: Efficiency; 232: Fuel consumption; 1236: Lorry; 1333: Transmission (veh); 5485: Weight
• Subject Areas: Energy; Highways; Motor Carriers; Vehicles and Equipment;

Filing Info

• Accession Number: 00330502
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: HS-030 710
• Files: ITRD, TRIS
• Created Date: Jul 9 1981 12:00AM