Measurements of Temperature and N2 Number Density in the Combustion Cylinder of a Compression Ignition Engine Utilizing Laser-Raman Diagnostics

Abstract

Laser-Raman scattering has been used to measure temperature and nitrogen number density in the combustion cylinder of a specialized research CI engine. Measurements were made as a function of crank angle degrees (CAD) for unfueled operation at 500 and 1,000 rpm and for operation at 1,000 rpm using n- heptane as an alternate fuel to diesel fuel no. 2. A pulsed ruby laser system was the excitation source for the Raman scattering, and the CAD resolution of the measurements was .0015 to 0.36 degrees.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1981
Accession Number
ADA094221

Entities

People

  • J. H. Jones
  • James W. Lewis
  • W. D. Williams

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Combustion
  • Combustion Chambers
  • Compression Ignition
  • Compression Ignition Engines
  • Data Acquisition
  • Diesel Engines
  • Diesel Fuels
  • Engineering
  • Heat Transfer
  • Internal Combustion Engines
  • Lasers
  • Measurement
  • Raman Scattering
  • Ruby Lasers
  • Scattering
  • Vibrational Relaxation

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Optical Physics and Photonics.
  • Petroleum Engineering

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers