Emission and Combustion Characteristics of Si Engine Working Under Gasoline Blended with Ethanol Oxygenated Organic Compounds

Balaji Balaji

doi:10.3844/ajessp.2010.495.499

Abstract

Problem statement: The objective of this study is to investigate the effect of using unleaded gasoline and additives blends on Spark Ignition engine (SI engine) combustion and exhaust emission. Approach: A four stroke, single cylinder SI engine was used for conducting this study. Exhaust emissions were analysed for Carbon Monoxide (CO), Hydrocarbon (HC) and Oxides of Nitrogen (NOx) and carbon dioxide (CO2) using unleaded gasoline and additives blends with different percentages of fuel at varying engine torque condition and constant engine speed. Results: The result showed that the blending of unleaded gasoline increases the octane number and power output this may leads to increase the brake thermal efficiency. The CO, HC and NOx emissions concentrations in the engine exhaust decreases while the CO2 concentration increases. Conclusion: Using ethanol as a fuel additive to unleaded gasoline causes an improvement in combustion characteristics and significant reduction in exhaust emissions.

Highlights

IntroductionThe major exhaust emissions HC, Carbon Monoxide (CO), NOx, SO2, solid particles are and performance is increased by adding the suitable additives to the fuel reduced with the present technology
One of the serious problems facing the modern technological society is the drastic increase in environmental pollution by Internal Combustion engines (IC engines)
Carbon dioxide is not considered as pollutant as nature recycles it and produces oxygen but in a confined area if CO2 exceeds 5000 ppm it becomes a potential health hazard (Bata and Roan, 1989)

Summary

Introduction

The major exhaust emissions HC, CO, NOx, SO2, solid particles are and performance is increased by adding the suitable additives to the fuel reduced with the present technology. The effect of oxygenate in gasoline on exhaust emission and performance in a single cylinder, four stroke SI engine was studied. The effect of compressed natural Gas on performance and Emission in a Internal Combustion engine was studied by Semin et al (2009a; 2009b) and (Kaleemuddin and Rao, 2009). Based on the economic and environmental considerations, an attempt has been made in this study to study the effects of ethanol contents in the ethanolgasoline blended fuel on the engine performance and pollutant emission of a commercial SI engine. The objective of the present study is to investigate the effect of varying engine torque on the engine performance and exhaust emission working with different ethanol fuel blends

Objectives

Methods

Results