Laser Flash Exposure time 25(50)µsec Deadtime=150nsec 5µsec I0 I1 I2 I3 I4 I5 Camera (40000 or 20000 fps) Phosphorescence ɡ ɡ ɡ ɡ
TSParticle Intensity Ratio [ ] 0.9 1 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Fitted lines for 6 images 0 0.2 0.4 Elasped Time [msec] 26.0 o C 30.9 o C 36.0 o C 41.2 o C 46.2 o C ɡ ɡ ɡ ɡ ɡ ɡ
ɡ ɡ Temperature [ o C] 150 Instantaneous temperature (Phosphor) Cycle averaged temperature(thermo couple) IVO Motoring WOT(P in ntake=0kpa ) Motoring P intake = 62kPa P intake =0kPa P intake = 62kPa IVC Gas temperatu ure EVO 360 180 0 180 Crank angle [deg.atdc] ɡ ɡ ɡ ɡ EVC 360 0 500 250 Gas temperature [ o C] ɡ ɡ ɡ ɡ ɡ ɡ
Lifetime, [ s] 600 400 200 Phosphor Only Phosphor coated with Au 50 150 200 Temperature [deg.c] Calculated Temperature [deg.c] 200 150 150 200 Temperature at Calibration [deg.c] Temperature [deg.c] 0.1013MPa 0.1393MPa 180 160 140 Ignition (34.45ms) 120 30 40 50 Time [ ms] Pre Chamber Quartz glass FASTCAM SA 1.1 Main Chamber Piston UV laser (355nm) Phosphor Evaporated Film (Au) ɡ ɡ ɡ ɡ ɡ
Ex Spark Plug Window (A) Piston In ɡ Temperature [deg.c] 600 Es mated value, Ne=700 Es mated value, Ne=1500 500 Measured value, Ne=700 Measured value, Ne=1500 400 300 200 0-90 -60-30 0 Crank angle [deg.atdc] ɡ ɡ ɡ ɡ ɡ ɡ ɡ ɡ ɡ