SIMULATION STUDIES OF THE EFFECTS OF TURBOCHARGING AND REDUCED HEAT TRANSFER ON SPARK-IGNITION ENGINE OPERATION

A computer simulation of the four-stroke spark-ignition engine cycle has been used to examine the effects of turbocharging and reduced heat transfer on engine performance, efficiency and NOx emissions. The simulation computes the flows into and out of the engine, calculates the changes in thermodynamic properties and composition of the unburned and burned gas mixtures within the cylinder through the engine cycle due to work, heat and mass transfers, and follows the kinetics of No formation and decomposition in the burned gas. The combustion process is specified as an input to the program through use of a normalized rate of mass burning profile. From this information, the simulation computes engine power, fuel consumption and NOx emissions.

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Watts, P A
  • Heywood, J B
• Publication Date: 1980-2

Media Info

• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Economic efficiency; Exhaust gases; Fuel consumption; Heat transfer; Nitric oxide; Nitrogen oxides; Simulation; Spark ignition engines; Thermodynamics; Turbochargers
• Uncontrolled Terms: Efficiency
• Old TRIS Terms: Turbocharging
• Subject Areas: Economics; Energy; Highways; Vehicles and Equipment; I96: Vehicle Operating Costs;

Filing Info

• Accession Number: 00319735
• Record Type: Publication
• Report/Paper Numbers: SAE 800289
• Files: TRIS
• Created Date: Oct 27 1980 12:00AM