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

Chapter 5
30
10
25
8
Pressure (bar)
20
15
10
6
4
Voltage (V)
5
2
0
0
100 110 120 130 140 150 160
Time (ms)
Figure 5.1 – TDC position: compression of updraft syngas-air mixture.
tel-00623090, version 1 - 13 Sep 2011
In this case, the jitter on the TDC position is 1.67 ms, which makes the pressure signal
being shifted to the right. Therefore, synchronization with reference to TDC is needed.
Figure 5.2 shows the result after TDC synchronization, where both signals are
overlapped.
Pressure (bar)
30
10
25
8
20
6
15
4
10
Voltage (V)
5
2
0
0
100 110 120 130 140 150 160
Time (ms)
Figure 5.2 – Pressure signal after TDC synchronization for compression of updraft syngas-air
mixture
This procedure was followed for every RCM experimental data.
5.1.1.2 Initial piston position
The initial piston position is only dependent of piston mechanical adjustment at the
bottom dead center (BDC). The analysis of the initial position of the piston for the whole
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