Study of exhaust emissions of direct injection diesel engine operating on ethanol, petrol and rapeseed oil blends.

Abstract This article presents the bench testing results of a four stroke, four cylinder, direct injection, unmodified, diesel engine operating on pure rapeseed oil (RO) and its 2.5 vol%, 5 vol%, 7.5 vol% and 10 vol% blends with ethanol (ERO), petrol (PRO) and both improving agents applied in equal proportions as 50:50 vol% (EPRO). The purpose of the research is to examine the effect of ethanol and petrol addition into RO on diesel engine emission characteristics and smoke opacity of the exhausts. The biggest NO x emissions, 1954 and 2078 ppm, at 2000 min −1 speed generate blends PRO10 (9.72%) and EPRO5 (11.13%) against, 1731 and 1411 ppm, produced from ERO5 (12%) and ERO10 (13.2% oxygen) blends. The carbon monoxide, CO, emissions emitted from a fully loaded engine fuelled with three agent blends EPRO5–7.5 at maximum torque and rated speed are higher by 39.5–18.8% and 27.5–16.1% and smoke opacity lower by 3.3–9.0% and 24.1–17.6% comparing with RO case. When operating at rated 2200 min −1 mode, the carbon dioxide, CO 2 , emissions are lower, 6.9–6.3 vol%, from blends EPRO5–7.5 relative to that from RO, 7.8 vol%, accompanied by a slightly higher emission of unburned hydrocarbons HC, 16 ppm, and residual oxygen contents O 2 , 10.4–12.0 vol%, in the exhausts.

[1]  Masayuki Onodera,et al.  Performance of a Diesel Engine Fueled by Rapeseed oil Blended with Oxygenated Organic Compounds , 2002 .

[2]  J. C. Thompson,et al.  The effect of biodiesel feedstock on regulated emissions in chassis dynamometer tests of a pickup truck. , 1999 .

[3]  Tadashi Murayama,et al.  Low Carbon Flower Buildup, Low Smoke, and Efficient Diesel Operation with Vegetable Oils by Conversion to Mono-Esters and Blending with Diesel Oil or Alcohols , 1984 .

[4]  L. G. Schumacher,et al.  Diesel engine exhaust emissions evaluation of biodiesel blends using a Cummins L10E engine. , 2001 .

[5]  Gvidonas Labeckas,et al.  Performance of direct-injection off-road diesel engine on rapeseed oil , 2006 .

[6]  L. G. Schumacher,et al.  Biodiesel emissions data from Series 60 DDC engines. , 2001 .

[7]  Masayuki Onodera,et al.  Reduction of Nox, Smoke, and BSFC in a Diesel Engine Fueled by Biodiesel Emulsion with Used Frying Oil , 1999 .

[8]  Yuzo Aoyagi,et al.  The Cold Flow Performance and the Combustion Characteristics with Ethanol Blended Biodiesel Fuel , 2005 .

[9]  John B. Heywood,et al.  Internal combustion engine fundamentals , 1988 .

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

[11]  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 .

[12]  Mustafa Ertunc Tat,et al.  Fuel property effects on injection timing, ignition timing, and oxides of nitrogen emissions from biodiesel-fueled engines , 2007 .

[13]  Mustafa Ertunc Tat,et al.  Fuel Property Effects on Biodiesel , 2003 .

[14]  T. K. Bhattacharya,et al.  Performance of a constant speed CI engine on alcohol-diesel microemulsions , 2004 .

[15]  Gvidonas Labeckas,et al.  Comparative performance of direct injection diesel engine operating on ethanol, petrol and rapeseed oil blends. , 2009 .

[16]  Cherng-Yuan Lin,et al.  An oxygenating additive for improving the performance and emission characteristics of marine diesel engines , 2003 .

[17]  Yakup İçingür,et al.  Effect of fuel cetane number and injection pressure on a DI Diesel engine performance and emissions , 2003 .

[18]  A. Hansen,et al.  DIESEL ENGINE PERFORMANCE AND NOX EMISSIONS FROM OXYGENATED BIOFUELS AND BLENDS WITH DIESEL FUEL , 2006 .

[19]  G. Labeckas,et al.  THE EFFECT OF RAPESEED OIL METHYL ESTER ON DIRECT INJECTION DIESEL ENGINE PERFORMANCE AND EXHAUST EMISSIONS , 2006 .