Ethanol-gasoline blends have been studied intensively in the literature over the years principally in port fuel injection spark ignition engine. Few studies looked at the behavior of ethanol-gasoline blends in direct-injection engine and even less evaluated its performance with a stratified charge injection strategy.
This thesis attempts to address this issue by presenting experimental results obtained with a Direct Injection Spark Ignition engine of the latest generation in which E0, E5, E10 and E20 are tested with a homogeneous and stratified injection strategies. Both strategies are evaluated at two operating points representative of highway and city cruising. The engine’s spark and injection timings were varied to find the optimum calibration and thus identifying engine timing requirements as a function of fuel. The experimental data include in-cylinder pressure, pollutant emissions and particulates emissions. The main findings are that with the addition of ethanol, emissions of particles, CO, THC and NO decrease. Furthermore ethanol achieves poorer mixtures under stratified charge injection than gasoline.
| Date | 16 Jan 2015 |
|---|
| Original language | French |
|---|
| Awarding Institution | - École de technologie supérieure
|
|---|
| Supervisor | Patrice Seers (Supervisor) |
|---|
Simon, G. (Author),
Seers (Supervisor),
16 Jan 2015Student thesis: Master's thesis › Master in Engineering: Mechanical Engineering