Partially Premixed Combustion (PPC) provides the potential of simultaneous reduction of NOx and soot for diesel engines. This work attempts to characterize the operating range and conditions required for PPC. The characterization is based on the evaluation of emission and in-cylinder measurement data of engine experiments.It is shown that the combination of low compression ratio, high EGR rate and engine operation close to stoichiometric conditions enables simultaneous NOx and soot reduction at loads of 8bar, 12bar, and 15bar IMEP gross. The departure from the conventional NOx-soot trade-off curve has to be paid with a decline in combustion efficiency and a rise in HC and CO emissions. It is shown that the low soot levels of PPC come along with long ignition delay and low combustion temperature.A further result of this work is that higher inlet pressure broadens the operating range of Partially Premixed Combustion.
Characterization of Partially Premixed Combustion
Sae Technical Papers
Powertrain & Fluid Systems Conference and Exhibition ; 2006
2006-10-16
Aufsatz (Konferenz)
Englisch
Characterization of partially premixed combustion
Kraftfahrwesen | 2006
|Partially premixed diffusion flamelets in non-premixed turbulent combustion
Kraftfahrwesen | 1984
|LES of Partially-Premixed Unsteady Combustion
AIAA | 2003
|Optimization of Gasoline Partially Premixed Combustion Mode
British Library Conference Proceedings | 2013
|Butanol-Diesel Blends for Partially Premixed Combustion
SAE Technical Papers | 2013
|