• Aucun résultat trouvé

Control strategy for hydrocarbon emissions in turbocharged direct injection spark ignition engines during cold-start

N/A
N/A
Protected

Academic year: 2021

Partager "Control strategy for hydrocarbon emissions in turbocharged direct injection spark ignition engines during cold-start"

Copied!
191
0
0

Texte intégral

Loading

Figure

Figure  1-1:  Emissions  regulations  are  based  on  cumulative  emissions.  Cumulative emissions  are  reduced  by  faster  up  (top)  or  lower  emissions  rate  during  warm-up  reduce  (bottom).
Figure  1-3:  Typical  PFI  fuel  spray  targets  the  back  surface  of  the  intake  valve  (left).
Figure  2-2  visually  explains  the mechanism start  strategy.  In  other  words,  late  combustion
Figure  2-6:  Late  ignition  timing  leads  to  significant  increase  in exhaust  gas  mass flow rate  for  constant  NIMEP=2.0  [bar]  and  D=I1.
+7

Références

Documents relatifs

Instead of developing as a sphere, as in simulations, the kernel develops with a toroidal shape, then with a third-lobe structure, without relaxing toward a spherical shape even

The location of the detonation peninsula has been studied as a function of the hot spot characteristics, and as a function of four parameters characterizing

It was considered that the maximal dilution rate was reached when the coefficient of variation of Indicated Mean Effective Pressure (IMEP) exceeded 3% (usual

The major findings of the present study are that 1) lesioning of PPN cholinergic neurons resulted in a significant loss of DA neurons in the SNc of rats and atrophy of

scintillating screen that is collected by the lens and from the light lost in the lens as it makes its way to the CCD chip in the camera. 5) Efficiency of the CCD

Nous avons également constaté que leur survenue était largement plus fréquente à mesure que la course avançait, puisque les proportions retrouvées sont plus importantes