Applied Physics B

, Volume 51, Issue 1, pp 63–66

CARS measurements of temperature and species concentrations in an IC engine

  • M. J. Cottereau
  • F. Grisch
  • J. J. Marie
Laser Diagnostics In Combustion

DOI: 10.1007/BF00332328

Cite this article as:
Cottereau, M.J., Grisch, F. & Marie, J.J. Appl. Phys. B (1990) 51: 63. doi:10.1007/BF00332328

Abstract

Temperature measurements alone, and also simultaneous CO2 concentration and temperature measurements, have been performed inside a fired IC engine. To tackle the two main problems encounted when making measurements in an engine (i.e., cycle-to-cycle variations and beam steering by density gradients), the shot-by-shot referencing technique and the in situ referencing technique using N2 to determine [CO2] were used. The temperature is deduced from the broadband N2 CARS signal and narrow band detection is used for CO2. A representative example of temperature measurements is given which shows a correlation between temperature and knocking intensity in the burnt gas of a knocking engine. The first simultaneous determinations of temperature and [CO2] are also reported; so far these are reliable only during the compression stoke.

PACS

3335

Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • M. J. Cottereau
    • 1
  • F. Grisch
    • 1
  • J. J. Marie
    • 1
  1. 1.URA CNRS 230/Coria-Universite de RouenMont Saint AignanFrance
  2. 2.Renault Automobile-67Rueil MalmaisonFrance