An experimental investigation of performance-emission trade off of a CI engine fueled by diesel–compressed natural gas (CNG) combination and diesel–ethanol blends with CNG enrichment

In order to comply with the ever-stringent emission norms throughout the world and crunch in petroleum reserves, the modern day automobile industry is compelled to hunt for new and alternative means of fuel sources to keep the wheels spinning globally. Paradoxical objectives of attaining simultaneous reduction in emission along with high performance has provided with a few alternatives. The present study deals with one such approach in which the potential of diesel ethanol blending and subsequent CNG (compressed natural gas) enrichment have been investigated. The study starts with a miscibility test of ethanol in diesel, which paves the way for an experimental comparison between performance and emission characteristics of Diesel–Ethanol blends, Diesel–CNG combinations and Diesel–Ethanol blends with CNG enrichment. The results indicates that diesel ethanol blend D95E5 (95% diesel 5% ethanol) with low CNG enrichment produces a better performance-emission characteristics as compared to base diesel operation as well as diesel–ethanol blend operation. Results also portrayed ethanol's potential in reducing NOx emission, BSEC and smoke opacity.

[1]  Fikret Yuksel,et al.  The use of ethanol–gasoline blend as a fuel in an SI engine , 2004 .

[2]  Norberto Domingo,et al.  Emissions From a 5.9 Liter Diesel Engine Fueled With Ethanol Diesel Blends , 2001 .

[3]  Alan Christopher Hansen,et al.  ETHANOL-DIESEL BLENDS: A STEP TOWARDS A BIO-BASED FUEL FOR DIESEL ENGINES , 2001 .

[4]  Rahul Banerjee,et al.  An Experimental Investigation on the Role of Hydrogen in the Emission Reduction and Performance Trade-Off Studies in an Existing Diesel Engine Operating in Dual Fuel Mode Under Exhaust Gas Recirculation , 2012 .

[5]  C. D. Rakopoulos,et al.  Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions , 2010 .

[6]  Amit Pal,et al.  Use of CNG and Diesel in CI Engines in Dual Fuel Mode , 2008 .

[7]  Z. Sahin,et al.  Prediction of the Effects of Ethanol-Diesel Fuel Blends on Diesel Engine Performance Characteristics, Combustion, Exhaust Emissions, and Cost , 2009 .

[8]  Debora Fino,et al.  CNG engines exhaust gas treatment via Pd-Spinel-type-oxide catalysts , 2006 .

[9]  Özer Can,et al.  Effects of ethanol addition on performance and emissions of a turbocharged indirect injection Diesel engine running at different injection pressures , 2004 .

[10]  Bang-Quan He,et al.  Study on Combustion and Emission Characteristics of Diesel Engines Using Ethanol Blended Diesel Fuels , 2003 .

[11]  Zhang Yu-sheng,et al.  Study on Combustion and Emission Characteristics of Diesel Engines Fueled with Ethanol/Diesel Blended Fuel , 2009 .

[12]  G. R. Kannan,et al.  Experimental investigation on diesel engine with diestrolwater micro emulsions , 2011 .

[13]  Teuku Meurah Indra Mahlia,et al.  Experimental Test of a New Compressed Natural Gas Engine with Direct Injection , 2009 .

[14]  Reyes García-Contreras,et al.  The effect of the addition of individual methyl esters on the combustion and emissions of ethanol and butanol -diesel blends , 2012 .

[15]  Takuji Ishiyama,et al.  Implementation of Ethanol Diesel Blend Fuels in PCCI Combustion , 2005 .

[16]  Zhou Long-bao,et al.  Combustion characteristics of compressed natural gas/diesel dual-fuel turbocharged compressed ignition engine , 2003 .

[17]  Alan Christopher Hansen,et al.  ON-FARM EVALUATION OF DIESEL FUEL OXYGENATED WITH ETHANOL , 2001 .

[18]  Irshad Ahmed,et al.  Oxygenated Diesel: Emissions and Performance Characteristics of Ethanol-Diesel Blends in CI Engines , 2001 .

[19]  R. W. Bittner,et al.  Catalytic Control of NOx, CO, and NMHC Emissions From Stationary Diesel and Dual-Fuel Engines , 1992 .

[20]  Rohit Gulati,et al.  A comparative evaluation of the performance characteristics of a spark ignition engine using hydrogen and compressed natural gas as alternative fuels , 2000 .

[21]  H. O. Hardenberg,et al.  The Use of Ethanol as a Fuel for Compression Ignition Engines , 1981 .

[22]  Antonio Paolo Carlucci,et al.  Experimental investigation and combustion analysis of a direct injection dual-fuel diesel–natural gas engine , 2008 .

[23]  Anthony Paul Roskilly,et al.  Experimental investigation on the performance and emissions of a diesel engine fuelled with ethanol–diesel blends , 2009 .

[24]  Su Han Park,et al.  Effect of early injection strategy on spray atomization and emission reduction characteristics in bioethanol blended diesel fueled engine , 2012 .

[25]  Deli Li,et al.  Physico-chemical properties of ethanol–diesel blend fuel and its effect on performance and emissions of diesel engines , 2005 .

[26]  Prommes Kwanchareon,et al.  Solubility of a diesel-biodiesel-ethanol blend, its fuel properties, and its emission characteristics from diesel engine , 2007 .

[27]  Octavio Armas,et al.  Emissions from a diesel–bioethanol blend in an automotive diesel engine , 2008 .

[28]  Takashi Okamoto,et al.  Combustion and exhaust gas emission characteristics of a diesel engine dual- fueled with natural gas , 2000 .