Etude de la combustion de gaz de synthèse issus d'un processus de ...

Chapter 5
estimation of various parameters on the main experimental results: in-cylinder pressure
and volume. This analysis shows the high precision of the Institute Pprime RCM for
every measured parameter, which ensures about the quality of the results that will be
shown in the following sections.
5.1.2 In-cylinder pressure
Figures 5.9-5.10 show RCM experimental pressure histories of stoichiometric syngasair
mixtures for various spark times and compression ratio ε =11. Four ignition timings
were tested: TDC, 5.0, 7.5 and 12.5 ms before TDC, respectively.
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Pressure (bar)
0.0 ms BTDC
5.0 ms BTDC
60
7.5 ms BTDC
12.5 ms BTDC
Compression
40
20
0
80 90 100 110 120 130 140 150 160 170 180 190 200
Time (ms)
Figure 5.9 – Pressure versus time for stoichiometric updraft syngas-air mixture at various spark
times.
80
0.0 ms BTDC
Pressure (bar)
60
40
20
5.0 ms BTDC
7.5 ms BTDC
12.5 ms BTDC
Compression
0
80 90 100 110 120 130 140 150 160 170 180 190 200
Time (ms)
Figure 5.10– Pressure versus time for stoichiometric downdraft syngas-air mixture at various
spark times.
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