Controlling fuel economy requires attention to several areas - equipment, selection, basic job planning, machine maintenance and operating practices. To-day's machines have engineering features that make possible economies that were unavailable with older equipment, e.g. the hydraulically angled bulldozer blade, the self-loading elevating scraper, and articulated motor grader. A bar chart is used to illustrate the general range of potential fuel savings possible with good operating practices: use of the right size backhoe buckets (too wide or too narrow can increase fuel consumption), and keeping scraper haul roads smooth (this will increase scraper efficiency). Equipment maintenance for fuel consumption begins at the engine. overconsumption of fuel due to poor maintenance is a matter of degree, with potential approaching the limits as conditions worsen, i.e. plugged air cleaner, wrong timing (injection) plugged fuel filter, defective nozzle (injection), and burned valves. Combinations of these conditions may not be directly cumulative, due to their interrelationships. Tires make a difference to fuel consumption; rolling resistance must be minimal and correct inflation is important. The importance is stressed of the engine idle speed, frequent lubrication, and operation at the most efficient rpm. The higher the average load on the engine, the greater the fuel economy. Increasing load from 50 percent to 80 percent of rated engine horsepower on the JD 450-C crawler by shifting to a higher grear results in a fuel saving of 17 percent. Fuel saving suggestions are also made for backhoe and excavator operators.

  • Availability:
  • Corporate Authors:

    Associated General Contractors of America

    2300 Wilson Boulevard, Suite 400
    Arlington, VA  United States  22201
  • Publication Date: 1975-9

Media Info

  • Features: Figures;
  • Pagination: p. 22-24
  • Serial:
    • Constructor
    • Volume: 57
    • Issue Number: 9
    • Publisher: Associated General Contractors of America
    • ISSN: 0162-6191

Subject/Index Terms

Filing Info

  • Accession Number: 00127473
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 10 1976 12:00AM