Effect of Intake Air Preheating on Performance and Emission Characteristics of Compression Ignition Engine Fueled with DieselBiodiesel Blends with Ethanol addition

Abstract

Lately, Renewable Biofuels Could Be Considered Leading Candidates For Softening Society?�?SLiability To Fossil Derivative Fuels And Pollutants Emission Issues. In This Study Taking Advantages Of Compression Ignition Engine Better Performance, Diesel-Cotton Seed Biodiesel Blends With Ethanol Addition Dawn As Alternative Commercial Fuel In Substitution To Diesel Fuel Without The Need Of Geometrical Engine Modifications. This Work Is Aimed At An Experimental Investigation Of The Performance And Emission Characteristics Of A Diesel Engine Running On Fuel Concentrations Of Diesel (70%)-Biodiesel (20%)-Ethanol (10%), Diesel(60%)-Biodiesel (30%)-Ethanol (10%), Diesel (50%)- Biodiesel (40%)- Ethanol (10%), And Diesel (100%) At Two Elevated Intake Air Temperatures Of 25??? And 51???. The Experiment Was Conducted On A Single-Cylinder, Four-Stroke, Air-Cooled And Naturally Aspirated Direct Injection Diesel Engine (Tbmc3-02) With A Maximum Power Output Of 2.2kw By Varying Engine Load At A Constant Speed Of 1750rpm. The Baseline Test Of A Standard Diesel Fuel Was Used In The Engine At The Ambient Air Temperature. While Running Ethanol In A Diesel Engine, It Is Essential To Preheat The Intake Air Or The Alcohols Itself In Order To Sufficiently Vaporize The Fuel. In This Regards, Shell And Tube Counter Flow Heat Exchanger Is Manufactured And Used For Preheating The Intake Air Using Engine Exhaust Gas As Source, Making The System More Sustainable Since No External Energy Is Required. Performance And Emissions Of The Diesel Engine Are Compared Based On Diesel-Biodiesel Blends With Ethanol Addition, And Standard Diesel. An Increase In The Air Intake Temperature Caused Variations In The Ignition Delay Period Of The Diesel-Biodiesel Blends With Ethanol Addition By Improving The Vaporization Characteristic Of Ethanol, And Provides A Better Combustion. The Experimental Result Reveals That An Increase In The Air Intake Temperature Results In An Average Increment In Brake Power, Bte, Co2 And Nox With B30e10 Fuel Of 2.78%, 4.1%, 22.14% And 8.68%.In Addition, An Average Reduction In Bsfc, Co And Hc Of 9.52%,36.84% And 13.23% Was Observed. Furthermore, An Increase In The Relative Amount Of Biodiesel With Diesel-Biodiesel Blends With Ethanol Addition Showed That A Slight Decrease In Brake Power, Medium Increase In Bte And Co2 However, There Is A Slight Increment In Bsfc, Nox., Co And Hc As Well. The Preheated Intake Air Shows An Effective Result When Compared To The Ambient Intake Air.