ECONOMY FROM THE TRUCK DIESEL ENGINE

This article is concerned with the fuel consumption of the medium and large sized four-stroke truck diesel engine, through the study of the various factors which affect the fuel energy conversion within the unit. These factors are classified under two basic headings namely combustion effects and mechanical efficiency. The former group comprises the fuel/air ratio, injection and combustion timing. It is stressed that operating conditions may demand settings of these systems above or below that required for optimum efficiency, and that any mismatching of fuel injection characteristics and air motion can produce significantly worse results. The mechanical efficiency is examined by making measurements of frictional losses with the engine in various stages of assembly. It is shown that losses in the running gear including auxilliaries amount to half of the total at full engine speed, whilst the largest single item contributing to friction loss is the cylinder head, it being responsible for mechanical losses in the valve train, pumping losses and compression losses. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00203122
• Corporate Authors:

  Institute of Road Transport Engineeers

  1 Cromwell Place
  London SW1 25F,   England 

  Institute of Road Transport Engineeers

  1 Cromwell Place
  London SW1 25F,   England 

  Institute of Road Transport Engineeers

  1 Cromwell Place
  London SW1 25F,   England 
• Authors:
  • Broome, D
• Publication Date: 1975-1

Language

• English

Media Info

• Features: Figures;
• Pagination: p. 13-5
• Serial:
  • TRANSPORT ENGINEER
  • Publisher: Institute of Road Transport Engineeers
  • ISSN: 0020-3122

Subject/Index Terms

• TRT Terms: Combustion; Cylinder heads; Diesel engines; Economic efficiency; Economic factors; Economics; Engines; Friction; Fuel air mixtures; Fuel consumption; Fuel injection; Transportation; Trucks
• Uncontrolled Terms: Efficiency
• Old TRIS Terms: Truck engines
• ITRD Terms: 3860: Combustion; 1314: Diesel engine; 263: Economics of transport; 5911: Efficiency; 232: Fuel consumption
• Subject Areas: Economics; Safety and Human Factors; Transportation (General); Vehicles and Equipment; I96: Vehicle Operating Costs;

Filing Info

• Accession Number: 00127816
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Dec 16 1975 12:00AM