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

Experimental study of engine-like turbulent combustion
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Pressure (bar)
60
40
20
Shot 1
Shot 2
Shot 3
0
90 100 110 120 130 140 150 160 170 180
Time (ms)
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(c)
tel-00623090, version 1 - 13 Sep 2011
Pressure (bar)
60
40
20
0
Shot 1
Shot 2
Shot 3
90 100 110 120 130 140 150 160 170 180
Time (ms)
(d)
Figure 5.8 b – Pressure signals for various ignition timings. (c) 7.5 ms BTDC. (d) 12.5 ms
BTDC.
Figure 5.8 shows the good reproducibility of the pressure signal for various ignition
timings. The maximum difference between peak pressures is: 1.8 bar for ignition at
TDC (70 bar on average, which represents an error of 2.5%); 0.8 bar for ignition timing
at 5 ms BTDC (69.2 bar on average representing an error of 1.1%); 0.5 bar for ignition
timing at 7.5 ms BTDC (68.8 bar on average, which represents an error of 0.7%);0.5
bar for ignition timing at 12.5 ms BTDC (68.4 bar on average representing an error of
0.7%).
5.1.1.5 Conclusion
The quality of the RCM experimental measurements was evaluated on this section
throughout a sensibility analysis of errors in measurement techniques and in the
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