A HIGHSPEED DATA ACQUISITION SYSTEM FOR MEASUREMENT AND ANALYSIS OF ENGINE INDICATOR DIAGRAMS

In the past highspeed data acquisition systems for cylinder pressure measurements in combustion engines used mainly magnetic tape recording technique. In the last years tape recorders have been replaced increasingly by computer systems with sufficient data handling rates. The economic availability of large scale integrated memory circuits makes it possible today to realize an effective alternative. In this concept the memory circuits serve as high speed data buffer for the incoming data. These will be processed afterwards by a minicomputer system. For final calculations and thermodynamic evaluation the data can be transferred to a central computer. This system concept involves a quick look data evaluation. Therefore it will be possible to perceive incorrect measurements early in the process enabling the test engineer to proceed with the appropriate correction measures. The use of such a system can be simplified by a comprehensive operator guidance along with measurement automation. This paper introduces the hardware and software structure of a system realized according to this concept in the Research and Development Division of BMW and reports on the first field experience with this system.

Media Info

  • Pagination: p. 463-476

Subject/Index Terms

Filing Info

  • Accession Number: 00393111
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: Proceeding, HS-037 234, HS-037 235
  • Files: HSL, USDOT
  • Created Date: Mar 29 1985 12:00AM