Advanced Diesel Combustion of a High Cetane Number Fuel with Low Hydrocarbon and Carbon Monoxide Emissions

Advanced diesel combustion is of great interest due to its promise of simultaneously reducing emissions of nitrogen oxides (NOx) and particulate matter (PM), while maintaining or improving efficiency. However, the extended ignition delay along with the combustion of a partially premixed charge results in excessive emissions from incomplete combustion, specifically total hydrocarbons (THC) and carbon monoxide (CO). In this study, a light-duty turbodiesel engine was operated in an advanced diesel combustion mode, specifically high efficiency clean combustion (HECC), using three different fuels including a conventional ultralow sulfur diesel fuel (diesel), a synthetic fuel produced in a high temperature Fischer−Tropsch (HTFT) process, and a synthetic fuel produced in a low temperature Fischer−Tropsch (LTFT) process. Start of injection (SOI) timing was swept from −8° ATDC to 0° ATDC to find the optimized injection timing for each fuel. The HTFT fuel, which had a derived cetane number (DCN) of 51, was found to...

[1]  John M. E. Storey,et al.  Simultaneous Low Engine-Out NOx and Particulate Matter with Highly Diluted Diesel Combustion , 2003 .

[2]  Lyle M. Pickett,et al.  Low flame temperature limits for mixing-controlled Diesel combustion , 2005 .

[3]  Zhen Huang,et al.  Physical and Chemical Properties of GTL−Diesel Fuel Blends and Their Effects on Performance and Emissions of a Multicylinder DI Compression Ignition Engine , 2007 .

[4]  Cherian A. Idicheria,et al.  End-of-Injection Over-Mixing and Unburned Hydrocarbon Emissions in Low-Temperature-Combustion Diesel Engines , 2007 .

[5]  Charles J. Mueller,et al.  Investigation of Fuel Effects on Dilute, Mixing-Controlled Combustion in an Optical Direct-Injection Diesel Engine , 2007 .

[6]  John E. Dec,et al.  Advanced compression-ignition engines—understanding the in-cylinder processes , 2009 .

[7]  M. Ribaucour,et al.  The chemistry of pre-ignition of n-pentane and 1-pentene , 1999 .

[8]  Dimitrios T. Hountalas,et al.  Experimental Study of Diesel Fuel Effects on Direct Injection (DI) Diesel Engine Performance and Pollutant Emissions , 2007 .

[9]  Motohiro Shinzawa,et al.  Combination of Combustion Concept and Fuel Property for Ultra-Clean DI Diesel , 2004 .

[10]  M. Musculus,et al.  In-cylinder unburned hydrocarbon visualization during low-temperature compression-ignition engine combustion using formaldehyde PLIF , 2007 .

[11]  Paul C. Miles,et al.  On the Cyclic Variability and Sources of Unburned Hydrocarbon Emissions in Low Temperature Diesel Combustion Systems. , 2007 .

[12]  John B. Heywood,et al.  An Overview of Hydrocarbon Emissions Mechanisms in Spark-Ignition Engines , 1993 .

[13]  Liu Shenghua,et al.  Study on the Performance and Emissions of a Compression Ignition Engine Fuelled with Fischer-Tropsch Diesel Fuel , 2006 .

[14]  André L. Boehman,et al.  NOx emissions of alternative diesel fuels: A comparative analysis of biodiesel and FT diesel , 2005 .

[15]  Yu Zhang,et al.  Premixed ignition behavior of C9 fatty acid esters: A motored engine study , 2009 .

[16]  Charles K. Westbrook,et al.  Chemical kinetics of hydrocarbon ignition in practical combustion systems , 2000 .

[17]  Mingfa Yao,et al.  Progress and recent trends in homogeneous charge compression ignition (HCCI) engines , 2009 .