The effect of exhaust gas recirculation on performance and emission characteristics of HCCI engine

In this work, performance and emission characteristics tests are conducted on homogeneous charge compression ignition (HCCI)-mode engine using mango seed methyl ester. And also the effect of exhaust gas recirculation (EGR) on performance and emission of HCCI engine is analysed. The three different percentages of EGR were added with intake fresh air at 15%, 30% and 45%. The objective of this work is to obtain the optimum EGR percentage based on engine performance and emissions. The brake thermal efficiency (BTE) slightly increased than conventional unmodified direct injection (DI) diesel engine. 15% of EGR shows higher BTE than other percentages of EGR added with HCCI engine. Specific fuel consumption of HCCI-mode engine is lower than the normal diesel engine. The exhaustion of harmful emission of oxides of nitrogen has been reduced when biodiesel is used in HCCI-mode engine. However, smoke and CO emissions were reduced in HCCI-mode engine compared with DI diesel engine and further decreased by using EGR in HCCI-mode engine. HC emissions are slightly increased for HCCI-mode engine.

[1]  G. Nagarajan,et al.  Performance and Emission Analysis on Mixed-Mode Homogeneous Charge Compression Ignition (HCCI) Combustion of Biodiesel Fuel with External Mixture Formation , 2012 .

[2]  J. R. Smith,et al.  Detailed Chemical Kinetic Simulation of Natural Gas HCCI Combustion: Gas Composition Effects and Investigation of Control Strategies , 2001 .

[3]  Md. Nurun Nabi,et al.  Biodiesel from cotton seed oil and its effect on engine performance and exhaust emissions , 2009 .

[4]  Graham T. Reader,et al.  Biodiesel engine performance and emissions in low temperature combustion , 2008 .

[5]  A. Megaritis,et al.  Partially premixed charge compression ignition engine with on-board H2 production by exhaust gas fuel reforming of diesel and biodiesel , 2005 .

[6]  Scott B. Fiveland,et al.  Development and Validation of a Quasi-Dimensional Model for HCCI Engine Performance and Emissions Studies Under Turbocharged Conditions , 2002 .

[7]  André L. Boehman,et al.  The Impact of the Bulk Modulus of Diesel Fuels on Fuel Injection Timing , 2004 .

[8]  Dennis L. Siebers,et al.  Effects of Oxygenates on Soot Processes in DI Diesel Engines: Experiments and Numerical Simulations , 2003 .

[9]  Robert W. Dibble,et al.  Sensitivity of Natural Gas HCCI Combustion to Fuel and Operating Parameters Using Detailed Kinetic Modeling , 1999, Advanced Energy Systems.

[10]  Spencer C. Sorenson,et al.  Combustion of Soybean Oil Methyl Ester in a Direct Injection Diesel Engine , 1993 .

[11]  Bengt Johansson,et al.  Demonstrating the Multi Fuel Capability of a Homogeneous Charge Compression Ignition Engine with Variable Compression Ratio , 1999 .

[12]  C. Peterson,et al.  Emissions Testing with Blends of Esters of Rapeseed Oil Fuel With and Without a Catalytic Converter , 1996 .

[13]  Hua Zhao,et al.  CHARACTERISTICS OF HOMOGENEOUS CHARGE COMPRESSION IGNITION (HCCI) COMBUSTION AND EMISSIONS OF n-HEPTANE , 2005 .

[14]  Robert L. McCormick,et al.  Transient Emissions from No. 2 Diesel and Biodiesel Blends in a DDC Series 60 Engine , 1996 .

[15]  A. S. Cheng,et al.  Investigation of the impact of biodiesel fuelling on NO x emissions using an optical direct injection diesel engine , 2006 .

[16]  Simona Silvia Merola,et al.  Extinction and Chemiluminescence Measurements in CR DI Diesel Engine Operating in HCCI Mode , 2007 .

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

[18]  André L. Boehman,et al.  Behavior of a diesel injection system with biodiesel fuel , 2003 .

[19]  J. Amouroux,et al.  Influence of fuel type, dilution and equivalence ratio on the emission reduction from the auto-ignition in an Homogeneous Charge Compression Ignition engine , 2010 .

[20]  Bengt Johansson,et al.  Supercharged Homogeneous Charge Compression Ignition (HCCI) with Exhaust Gas Recirculation and Pilot Fuel , 2000 .

[21]  Vittorio Rocco,et al.  A Comparative Analysis of Combustion Process in D.I. Diesel Engine Fueled with Biodiesel and Diesel Fuel , 2000 .

[22]  Timothy J. Callahan,et al.  Homogeneous Charge Compression Ignition of Diesel Fuel , 1996 .

[23]  James A. Miller,et al.  Mechanism and modeling of nitrogen chemistry in combustion , 1989 .

[24]  Rakesh Kumar Maurya,et al.  Experimental study of combustion and emission characteristics of ethanol fuelled port injected homogeneous charge compression ignition (HCCI) combustion engine , 2011 .