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

Chapter 6
downdraft syngas than for updraft syngas, which agrees with the heat of reaction of the
fuels and with the burning velocities. Another conclusion is that varying the ignition
timing is possible to keep closely the same peak pressure for different rotation speeds.
As far as pressure is concerned, one obtains higher pressures for downdraft syngas,
which follows the results obtained experimentally in the RCM. The increase of
maximum cylinder pressure with ignition timing is evident. Pressure varied between 49-
62 bar for updraft syngas, 48-61 bar for downdraft syngas. These levels of peak
pressure are in agreement with the ones obtained in RCM in the section 5.2.2.
Conclusion can be drawn that typical syngas compositions besides its lower heat value
and burning velocities can be used on SI engines even at elevated rotation speeds.
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