ERROR ANALYSIS IN INDICATED PRESSURE AND HEAT RELEASE CALCULATIONS IN DIRECT INJECTION DIESEL ENGINES

Accurate values of indicated pressure are required both to improve engine diagnostic and to validate numerical calculation. Therefore the errors in data measuring, recording and processing must be recognized and if possible minimized. Certainly this argument is not a new one. Fundamental works in this field were done by Brown, who published two papers on the accuracy of measurement using piezoelectric transducers, and by Lancaster, who discussed some problems about hardware and introduced an interactive diagnostic. This paper aims to resume and discuss the experiences of different authors giving some contributions to the problem of measuring and processing the cylinder pressure. In particular, the paper deals with some problems regarding hardware, data processing, errors in indicated mean effective pressure and heat release determination. Some suggestions are provided about an interactive diagnostic.

• Supplemental Notes:
  • ISATA 84, "In Pursuit of Technical Excellence". Proceedings Volume 1. International Symposium on Automotive Technology and Automation with particular reference to Vehicle Management Systems and Flexible Manufacturing Systems, Milan, Italy 24-28 September 1984.
• Corporate Authors:

  Automotive Automotion Limited

  42 Lloyd Park Avenue
  Croydon CRO 5SB, Surrey,   England 

  Alfa Romeo Auto SpA

  Milan,   Italy 
• Authors:
  • BELARDINI, P
  • BERTOLI, C
  • Corcione, F
  • Diana, S
  • Police, G
• Conference:
  • ISATA 84, "In Pursuit of Technical Excellence". Proceedings Volume 1. International Symposium on Automotive Technology and Automation with particular reference to Vehicle Management Systems and Flexible Manufacturing Systems, Milan, Italy 24-28 September
• Publication Date: 1984

Media Info

• Features: Figures; References;
• Pagination: p. 439-458

Subject/Index Terms

• TRT Terms: Accuracy; Computer graphics; Diagnostic tests; Diesel engines; Errors; Fuel injection; Heat flow; Information processing; Instruments for measuring loads or pressure; Measurement; Pressure
• Uncontrolled Terms: Hardware; Heat release rate; Interactive graphics
• Old TRIS Terms: Cylinder pressure; Direct injection; Pressure measurement
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00399903
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: ISATA 84026, HS-038 444
• Files: HSL, USDOT
• Created Date: Oct 31 1985 12:00AM