Skip to Main content Skip to Navigation
Theses

Etude caractéristique et développement de la combustion des moteurs Diesel en mode Dual-Fuel : optimisation de l'injection du combustible pilote

Abstract : Currently, the environmental degradation due to pollutant emissions and the gradual depletion of fossil fuels, becoming very worrying, are prompting European directives to set pollutant emission limits. These have led manufacturers to continue research in the development of clean and efficient engine designs using alternative fuels in internal combustion engines.In this work, we focus on the study of engines operating in dual-fuel mode to improve its performance while minimizing pollutant emissions, particularly HC and CO. For this, experimental studies were conducted. A reduction of about 77% in the HC emissions was observed as the equivalence ratio was varied from 0.35 to 0.7. Regarding the effect of injection timing, it was noted that the CO emissions decreased about 20% to 50% with an improvement in the brake thermal efficiency by 30% upon varying the injection advance from 4,5 °CA to 6 °CA. On the other hand, the introduction of pre-injection strategy led to a decrease by 30% in NOx emissions with an amelioration of brake thermal efficiency of 12% to 30% compared to a single injection. Lastly, a single zone thermodynamic model was developed to predict the in-cylinder temperature and pressure. A good agreement was noted between the predicted and experimental results. The average relative error was less than 5%.
Complete list of metadata

Cited literature [78 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-01814053
Contributor : Abes Star :  Contact
Submitted on : Tuesday, June 12, 2018 - 5:37:06 PM
Last modification on : Wednesday, July 21, 2021 - 7:42:03 AM

File

2018IMTA0072_AkloucheFatma_Dif...
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01814053, version 1

Citation

Fatma Zohra Aklouche. Etude caractéristique et développement de la combustion des moteurs Diesel en mode Dual-Fuel : optimisation de l'injection du combustible pilote. Thermique [physics.class-ph]. Ecole nationale supérieure Mines-Télécom Atlantique, 2018. Français. ⟨NNT : 2018IMTA0072⟩. ⟨tel-01814053⟩

Share

Metrics

Record views

765

Files downloads

23960