Characterization of light duty Diesel engine pollutant emissions using water-emulsified fuel

In this work, the effect of water‐oil emulsions on the engine performance and on the main pollutant emissions, NOx, total hydrocarbons (THC), soot, particulate matter (PM) and its composition, was studied. A turbocharger intercooler indirect injection (IDI) Diesel engine was tested under five different steady state operating conditions, selected from the transient cycle for light duty vehicles established in the European Emission Directive 70/220. Tests were performed using a commercial fuel as a reference and an emulsified fuel for each operating condition. Results reported here suggest that the water emulsification has a potential to slightly improve the brake efficiency and to significantly reduce the formation of thermal NO, soot, hydrocarbons and PM in the Diesel engine. q 2004 Elsevier Ltd. All rights reserved.

[1]  Haji Hassan Masjuki,et al.  Indirect injection diesel engine operation on palm oil methyl esters and its emulsions , 1997 .

[2]  Qiang Wei,et al.  Diesel Exhaust Particle Size: Measurement Issues and Trends , 1998 .

[3]  F. Dryer.  Water addition to practical combustion systems—Concepts and applications , 1977 .

[4]  Arántzazu Gómez,et al.  Diesel Particle Size Distribution Estimation from Digital Image Analysis , 2003 .

[5]  Yasufumi Yoshimoto,et al.  Influence of Combustion Chamber Configurations on the Combustion in Diesel Engine Driven by Emulsified Fuel , 1982 .

[6]  O. Armas,et al.  Fuel Formulation Effects on Passenger Car Diesel Engine Particulate Emissions and Composition , 2000 .

[7]  Octavio Armas,et al.  Kinetic Modelling of Gaseous Emissions in a Diesel Engine , 2000 .

[8]  A. C. Fernandez-Pello,et al.  Initial Observations on the Free Droplet Combustion Characteristics of Water-In-Fuel Emulsions† , 1979 .

[9]  K. Owen,et al.  Automotive Fuels Reference Book , 1995 .

[10]  Norberto Fueyo,et al.  Combustion characteristics of heavy oil-water emulsions , 1996 .

[11]  James A. Harbach,et al.  EFFECTS OF EMULSIFIED FUEL ON COMBUSTION IN A FOUR-STROKE DIESEL ENGINE , 1991 .

[12]  M. Lapuerta,et al.  Characterization of Soluble Organic Fraction in DPM: Optimization of the Extraction Method , 1999 .

[13]  Yasufumi Yoshimoto,et al.  Reduction of NOx, Smoke, BSFC, and Maximum Combustion Pressure by Low Compression Ratios in a Diesel Engine Fuelled by Emulsified Fuel , 1992 .

[14]  Philippe Schulz,et al.  AQUAZOLE™: An Original Emulsified Water-Diesel Fuel for Heavy-Duty Applications , 2000 .

[15]  Magín Lapuerta,et al.  Composition and size of diesel particulate emissions from a commercial European engine tested with present and future fuels , 2003 .

[16]  Yasufumi Yoshimoto,et al.  Improvement of BSFC by Reducing Diesel Engine Cooling Losses with Emulsified Fuel , 1996 .

[17]  Kang Y. Huh,et al.  Reduction of NOx, smoke and brake specific fuel consumption with optimal injection timing and emulsion ratio of water-emulsified diesel , 2001 .

[18]  S. Kajitani,et al.  Physical Properties of Emulsion Fuel (Water/Oil-Type) and Its Effect on Engine Performance under Transient Operation , 1992 .

[19]  E. Valdmanis,et al.  The Effects of Emulsified Fuels and Water Induction on Diesel Combustion , 1970 .

[20]  Hiroshi Yamasaki,et al.  Recent advances in the combustion of water fuel emulsion , 2002 .

[21]  Paul Wintz,et al.  Digital image processing (2nd ed.) , 1987 .

[22]  Hong-zhi Sheng,et al.  The Droplet Group Micro-Explosions in W/O Diesel Fuel Emulsion Sprays , 1995 .

[23]  R. Reid,et al.  The Properties of Gases and Liquids , 1977 .

[24]  Karsten Hummel,et al.  Common Rail Injection System for Commercial Diesel Vehicles , 1997 .

[25]  Robert L. McCormick,et al.  Combustion of fat and vegetable oil derived fuels in diesel engines , 1998 .

[26]  T. Litzinger,et al.  Quantitative Imaging Study of the Effects of Intake Air Temperature on Soot Evolution in an Optically-Accessible D.I. Diesel Engine , 1994 .

[27]  Niko Samec,et al.  Numerical and experimental study of water/oil emulsified fuel combustion in a diesel engine , 2002 .

[28]  Kang Y. Huh,et al.  Experimental study on the combustion characteristics of emulsified diesel in a rapid compression and expansion machine , 2000 .

[29]  I. Cornet,et al.  Emulsified Fuels in Compression Ignition Engines , 1955 .

[30]  O. Armas,et al.  Influence of Mini-tunnel Operating Parameters and Ambient Conditions on Diesel Particulate Measurement and Analysis , 1999 .

[31]  W. Fu,et al.  A study on the effect of more volatile fuel on evaporation and ignition for emulsified oil , 2001 .

[32]  Mohamed Y. E. Selim,et al.  Effects of diesel/water emulsion on heat flow and thermal loading in a precombustion chamber diesel engine , 2001 .

[33]  Thomas A. Litzinger,et al.  Effects of Emulsified Fuels on Soot Evolution in an Optically-accessible DI Diesel Engine , 2000 .

[34]  A. Barnes,et al.  Evaluation of Water-blend Fuels in a City Bus and an Assessment of Performance with Emission Control Devices , 2000 .

[35]  R. P. Wilson,et al.  The combustion institute: Western States Section—1974 Spring Meeting , 1974 .

[36]  Gordon E. Andrews,et al.  The reduction in diesel particulate emissions using emulsified fuels , 1988 .

[37]  Antonio Diego-Marin,et al.  An experimental study of the effect of water content on combustion of heavy fuel oil/water emulsion droplets , 2001 .