Hydrogen and Ethanol as Potential Alternative Fuels Compared to Gasoline under Improved Exhaust Gas Recirculation

Authors

Arash Nemati Miyaneh Branch, Islamic Azad University

Mohsen Mardi Kolur Mechanical Engineering, TU Berlin

S. Khalil Arya Mechainical Engineering, Urmia University

Samad Jafarmadar Mechanical Engineering, Urmia University

Abstract:

In the present study, a computational fluid dynamics (CFD) method have been utilized to investigate the effects of exhaust gas recirculation (EGR) and initial charge pressure by means of using a supercharger on the emissions and performance of a SI engine. This engine is fueled separately by gasoline and two potential alternative fuels, hydrogen and ethanol. The results of simulation are compared to the experimental data. There is a good agreement among the results. The calculations are carried out for EGR ratios between 0% and 20% and four cases of initial pressure have been mentioned: Pin= 1, 1.2, 1.4, 1.6 bar. The effect of EGR on NOx emission of hydrogen is more than others while its effect on IMEP of hydrogen is less than others. From the viewpoints of emission and power, 10% of EGR seems to be the most desirable amount. The most noticeable effect of supercharging is on gasoline unlike hydrogen that seems to be affected the least. The comparison of results shows that hydrogen due to its high heating value and burning without producing any carbon-based compounds such as HC, CO and CO2 is an ideal alternative fuel compared to the other fuels.

Upgrade to premium to download articles

Already have an account?login

similar resources

Exhaust Gas Recirculation in On·board Diagnostic System

Introduce electronic control exhaust gas recirculation EGR system in the passenger cars and light duty vehicles was made because of fuel direct injectionengines. In this engines temperature combustion process is a higher then other type engine and in this connections NO, emissions were higher to. Simultaneously was appearing problems to electronic exhaust gas recirculation control in connection...

full text

Dynamic Scheduling of Internal Exhaust Gas Recirculation Systems

In this paper we analyze the nonlinear dynamic be havior of an internal exhaust gas recirculation system based on the mean value model of an experimental en gine equipped with a camshaft phaser We develop a dynamic camshaft timing schedule that regulates the in ternal exhaust gas recirculation system while maintain ing transient engine torque response similar to an engine with zero exhaust gas ...

full text

Extending Exhaust Gas Recirculation Limits in Diesel Engines

This paper addresses the application of high exhaust gas recirculation (EGR) for reduced nitrogen oxide emissions from diesel engines. The research objective is to develop fundamental information about the relationship between EGR parameters and diesel combustion instability and particulate formation so that options can be explored for maximizing the practical EGR limit, thereby further reducin...

full text