DIESEL ENGINE HEALTH: LASER DIAGNOSTICS

This paper describes two simple laser instruments which the automotive engineer can use in vibrational studies of diesel engines. The first is a "normal surface velocity" instrument which the engineer can hand hold and simply "point" at the target surface for measurement. Field tests have shown it to be quick and easy to use with excellent accuracy and reliability. It is a particular time-saver in test cell use where the necessity for many accelerometer fittings is removed. The second is a laser torsional vibrometer which can measure the torsional oscillation of rotating machinery parts. This has shown itself to be superior to the more standard techniques of slotted discs and slip rings, etc. and provides advantages of higher frequency response, greater accuracy and non-contact measurement. Conclusions drawn herald a step forward in measurement techniques and demonstrate the great potential of laser technology in heavy engineering applications.

• Supplemental Notes:
  • State-of-the-Art on Design and Performance of Diesel Power Cylinder Components SP-552. International Off-Highway Meeting and Exposition Milwaukee, Wisconsin, September 12-15, 1983.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Halliwell, N A
  • Pullen, L
  • BAKER, J
• Publication Date: 1983-9

Media Info

• Features: Figures; References;
• Pagination: p. 101-109
• Serial:
  • Publication of: Pergamon Press Limited
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Diesel engines; Engine performance; Lasers; Testing; Torsion; Vibration
• Old TRIS Terms: Torsional vibration
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00381951
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 831324, HS-036 095
• Files: HSL, USDOT
• Created Date: Mar 30 1984 12:00AM