Advanced Heat and Flow Visualization: Temperature Sensitive Particles

Abstract

  The instantaneous wall temperature was measured in an RCEM/engine cylinder, with or without the fire, by the phosphor thermometry. The measured wall temperature and its distribution had good correlation with a change of calculated gas temperature from the pressure.
  An oil flow and a gaseous flow in the cylinder were measured using a high speed camera, a single-pulsed UV laser and temperature sensitive phosphor particles. The temperature was calculated from the lifetime and the velocity was obtained from the phosphor particle images during a single decay. The temperature changes dependently on the crank angle agreed qualitatively with the gas temperature estimated from the pressure.