AN ENGINE DIAGNOSTIC PACKAGE (EDRAC)--SOFTWARE FOR ANALYZING CYLINDER PRESSURE-TIME DATA

An engine diagnostic package known as EDPAC was designed to process engine cylinder pressure data automatically from single-cylinder and multicylinder engines in order to provide engine performance and combustion information. The EDPAC consists of several self-contained, independent software modules, each having a different analysis function: engine performance calculations, pressure-volume graphics, engine simulation for residual gas estimates, and heat release analysis. After each module is executed, computed results are stored automatically, providing input to subsequent software modules and a data base for future interrogation. The EDPAC saftware offers a user-oriented mechanism by which pressure-time data can be quickly and accurately reduced to meaningful results for evaluating engine combustion and performance. Processing cylinder pressure-time data with EDPAC includes test cell data reduction, generation of indicator diagrams, engine simulation to estimate residual gas fraction, heat release analysis, multicylinder engine summary, and summary of stored data. Routine use of the EDPAC to process pressure data reduces costs, effort, and turnaround time, and a data base containing performance, emission, and combustion data is automatically estabilished.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Presented at SAE International Fuels and Lubricants Meeting, Toronto, 13-16 November 1978.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Young, M B
  • Lienesch, J H
• Publication Date: 1978

Media Info

• Features: References;
• Pagination: 18 p.
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Combustion; Diagnosis; Diagnostic tests; Engines; Information processing; Performance; Pressure; Software
• Uncontrolled Terms: Cylinders
• Subject Areas: Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00399224
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 780967, HS-025 910U
• Files: HSL, USDOT
• Created Date: Oct 31 1985 12:00AM