Invited Review: Combustion instability in spray-guided stratified-charge engines: A review

This article reviews systematic research on combustion instabilities (principally rare, random misfires and partial burns) in spray-guided stratified-charge (SGSC) engines operated at part load with highly stratified fuel -air -residual mixtures. Results from high-speed optical imaging diagnostics and numerical simulation provide a conceptual framework and quantify the sensitivity of ignition and flame propagation to strong, cyclically varying temporal and spatial gradients in the flow field and in the fuel -air -residual distribution. For SGSC engines using multi-hole injectors, spark stretching and locally rich ignition are beneficial. Combustion instability is dominated by convective flow fluctuations that impede motion of the spark or flame kernel toward the bulk of the fuel, coupled with low flame speeds due to locally lean mixtures surrounding the kernel. In SGSC engines using outwardly opening piezo-electric injectors, ignition and early flame growth are strongly influenced by the spray's characteristic recirculation vortex. For both injection systems, the spray and the intake/compression-generated flow field influence each other. Factors underlying the benefits of multi-pulse injection are identified. Unresolved questions include (1) the extent to which piezo-SGSC misfires are caused by failure to form a flame kernel rather than by flame-kernel extinction (as in multi-hole SGSC engines); (2) the relative contributions of partially premixed flame propagation and mixing-controlled combustion under the exceptionally late-injection conditions that permit SGSC operation on E85-like fuels with very low NOx and soot emissions; and (3) the effects of flow-field variability on later combustion, where fuel-air-residual mixing within the piston bowl becomes important.

[1]  Reinhold Kneer,et al.  Investigation of the influence of multiple gasoline direct injections on macroscopic spray quantities at different boundary conditions by means of visualization techniques , 2010 .

[2]  John B. Heywood,et al.  Combustion Characterization in a Direct-Injection Stratified-Charge Engine and Implications on Hydrocarbon Emissions , 1989 .

[3]  N. Peters,et al.  Understanding ignition processes in spray-guided gasoline engines using high-speed imaging and the extended spark-ignition model SparkCIMM. Part A: Spark channel processes and the turbulent flame front propagation , 2011 .

[4]  C. Bae,et al.  Effects of the injection timing on spray and combustion characteristics in a spray-guided DISI engine under lean-stratified operation , 2013 .

[5]  V. Sick,et al.  On the ignition and flame development in a spray-guided direct-injection spark-ignition engine , 2014 .

[6]  Choongsik Bae,et al.  Effect of the Multiple Injection on Stratified Combustion Characteristics in a Spray-Guided DISI Engine , 2011 .

[7]  C. Arcoumanis,et al.  Flow, Mixture Preparation and Combustion in Four-Stroke Direct-Injection Gasoline Engines , 2008 .

[8]  Wei Zeng,et al.  Using PIV Measurements to Determine the Role of the In-cylinder Flow Field for Stratified DISI Engine Combustion. , 2014 .

[9]  J. Sinnamon,et al.  An Experimental and Analytical Study of Engine Fuel Spray Trajectories , 1980 .

[10]  Arun S. Solomon,et al.  A photographic study of fuel spray ignition in a rapid compression machine , 1986 .

[11]  H. L. Walmsley,et al.  Particulate and Hydrocarbon Emissions from a Spray Guided Direct Injection Spark Ignition Engine with Oxygenate Fuel Blends , 2007 .

[12]  Michael C. Drake,et al.  Local fuel concentration measurements in internal combustion engines using spark-emission spectroscopy , 2002 .

[13]  C. Arcoumanis,et al.  Spray stability of outwards opening pintle injectors for stratified direct injection spark ignition engine operation , 2010 .

[14]  Christian Angelberger,et al.  Invited Review: Development of a one-dimensional computational fluid dynamics modeling approach to predict cycle-to-cycle variability in spark-ignition engines based on physical understanding acquired from large-eddy simulation , 2015 .

[15]  Michael C. Drake,et al.  ‘‘Designer diagnostics’’ for developing direct-injection gasoline engines , 2006 .

[16]  Norbert Peters,et al.  Detailed chemistry flamelet modeling of mixed-mode combustion in spark-assisted HCCI engines , 2011 .

[17]  Volker Sick,et al.  High-speed imaging of OH* and soot temperature and concentration in a stratified-charge direct-injection gasoline engine , 2004 .

[18]  Michael Wensing,et al.  Structure of evaporating single- and multicomponent fuel sprays for 2nd generation gasoline direct injection , 2011 .

[19]  A. C. Alkidas,et al.  Combustion Characteristics of a Spray-Guided Direct-Injection Stratified-Charge Engine with a High-Squish Piston , 2005 .

[20]  Kyoungdoug Min,et al.  Spray and combustion characteristics of ethanol blended gasoline in a spray guided disi engine under lean stratified operation , 2010 .

[21]  Jason King,et al.  Multiple Injection and Boosting Benefits for Improved Fuel Consumption on a Spray Guided Direct Injection Gasoline Engine , 2013 .

[22]  Blake Reynolds,et al.  ELIMINATION OF COMBUSTION KNOCK-TEXACO COMBUSTION PROCESS , 1951 .

[23]  G. Vent,et al.  The new 2.0l turbo engine from the Mercedes- Benz 4-cylinder engine family , 2012 .

[24]  H. Ricardo.  RECENT RESEARCH WORK ON THE INTERNAL-COMBUSTION ENGINE , 1922 .

[25]  Ingemar Denbratt,et al.  In-cylinder soot imaging and emissions of stratified combustion in a spark-ignited spray-guided direct-injection gasoline engine , 2011 .

[26]  Yoshihiro Nomura,et al.  Analysis of cycle-by-cycle variation in a direct injection gasoline engine using a laser-induced fluorescence technique , 2003 .

[27]  D. Reuss,et al.  High-speed imaging of spray-guided DISI engine combustion with near-TDC injection of E85 for ultra-low NO and soot , 2013 .

[28]  R. M. Siewert,et al.  Unassisted Cold Starts to −29°C and Steady-State Tests of a Direct-Injection Stratified-Charge (DISC) Engine Operated on Heat Alcohols , 1987 .

[30]  Ather A. Quader,et al.  The Axially-Stratified-Charge Engine , 1982 .

[31]  B. Stojkovic,et al.  Local fuel concentration, ignition and combustion in a stratified charge spark combustion in a stratified charge spark ignited direct injection engine: Spectroscopic, imaging and pressure-based measurements , 2003 .

[32]  Volker Sick,et al.  Crank-Angle Resolved Imaging of Fuel Distribution, Ignition and Combustion in a Direct-Injection Spark-Ignition Engine , 2005 .

[33]  A. Dreizler,et al.  In-Cylinder Flow and Fuel Spray Interactions in a Stratified Spray-Guided Gasoline Engine Investigated by High-Speed Laser Imaging Techniques , 2013 .

[34]  Xiaofeng Yang,et al.  Ignition and Combustion Simulations of Spray-Guided SIDI Engine using Arrhenius Combustion with Spark-Energy Deposition Model , 2012 .

[35]  W. R. Wade,et al.  The Ford PROCO Engine Update , 1978 .

[36]  Frank Adam,et al.  Exhaust Gas Aftertreatment for Lean Gasoline Direct Injection Engines - Potential for Future Applications , 2013 .

[37]  Norbert Peters,et al.  On unsteady premixed turbulent burning velocity prediction in internal combustion engines , 2007 .

[38]  V. Sick,et al.  Flow Field Assessment in a Fired Spray-Guided Spark-Ignition Direct-Injection Engine Based on UV Particle Image Velocimetry with Sub Crank Angle Resolution , 2007 .

[39]  David Shawcross,et al.  A Five-Million Kilometre, 100-Vehicle Fleet Trial, of an Air-Assist Direct Fuel Injected, Automotive 2-Stroke Engine , 2000 .

[40]  Volker Sick,et al.  Quantitative high-speed imaging of burned gas temperature and equivalence ratio in internal combustion engines using alkali metal fluorescence , 2014 .

[41]  Mikael Skogsberg,et al.  Spray Shape and Atomization Quality of an Outward-Opening Piezo Gasoline DI Injector , 2007 .

[42]  M. Alperstein,et al.  Texaco's Stratified Charge Engine - Multifuel Efficient, Clean, and Practical , 1974 .

[43]  Frediano V. Bracco,et al.  Fuel Distribution Effects on the Combustion of a Direct-injection Stratified-Charge Engine , 1995 .

[44]  Todd D. Fansler,et al.  Swirl, Squish and Turbulence in Stratified-Charge Engines: Laser-Velocimetry Measurements and Implications for Combustion , 1987 .

[45]  Rudolf Maly,et al.  Spark Ignition and Combustion in Four-Stroke Gasoline Engines , 2008 .

[46]  Stephan Arndt,et al.  Optical Investigations in Stratified Gasoline Combustion Systems with Central Injector Position Leading to Optimized Spark Locations for Different Injector Designs , 2003 .

[47]  Hua Zhao.  Advanced Direct Injection Combustion Engine Technologies and Development , 2010 .

[48]  Claudia O. Iyer,et al.  Development and analysis of a spray-guided DISI combustion system concept , 2003 .

[49]  Stephen Busch,et al.  High Injection Pressures at the Upper Load Limit of Stratified Operation in a DISI Engine , 2009 .

[50]  Magnus Sjöberg,et al.  NOx-Reduction by Injection-Timing Retard in a Stratified-Charge DISI Engine using Gasoline and E85 , 2012 .

[51]  J. M. Rife,et al.  EXPERIMENTS IN STRATIFIED COMBUSTION WITH A RAPID COMPRESSION MACHINE , 1978 .

[52]  Lars Schmidt,et al.  Multiple injection strategies for improved combustion stability under stratified part load conditions in a Spray Guided Gasoline Direct Injection (SGDI) engine , 2011 .

[53]  T.-W. Kuo,et al.  Understanding ignition processes in spray-guided gasoline engines using high-speed imaging and the extended spark-ignition model SparkCIMM: Part B: Importance of molecular fuel properties in early flame front propagation , 2011 .

[54]  H. Bäcker,et al.  Direct Injection Systems for Otto Engines , 2007 .

[56]  Michael C. Drake,et al.  Fuel Distributions in a Firing Direct-Injection Spark-Ignition Engine Using Laser-Induced Fluorescence Imaging , 1995 .

[57]  Fuquan Zhao,et al.  Automotive Gasoline Direct-Injection Engines , 2002 .

[58]  R. Dahms,et al.  Detailed Simulations of Stratified Ignition and Combustion Processes in a Spray-Guided Gasoline En , 2012 .

[59]  Peter Weyand,et al.  Ignition Systems for Spray-Guided Stratified Combustion , 2010 .

[60]  Rolf D. Reitz,et al.  An ignition and combustion model based on the level-set method for spark ignition engine multidimensional modeling , 2006 .

[61]  Daniel C. Haworth,et al.  Computation and Measurement of Flow and Combustion in a Four-Valve Engine with Intake Variations , 1995 .

[62]  R. Diwakar,et al.  Multidimensional Modeling Applied to the Direct-Injection Stratified-Charge Engine—Calculation versus Experiment , 1981 .

[63]  Andreas M. Lippert,et al.  Modeling ignition phenomena in spray-guided spark-ignited engines , 2009 .

[64]  Michael C. Drake,et al.  Advanced diagnostics for minimizing hydrocarbon emissions from a direct-injection gasoline engine , 1996 .

[65]  David L. Harrington,et al.  Automotive Spark-Ignited Direct-Injection Gasoline Engines , 2000 .

[66]  Frediano V. Bracco,et al.  Mixture Preparation Effects on Ignition and Combustion in a Direct-Injection Spark-Ignition Engine , 1996 .

[67]  D. Reuss,et al.  Role of Engine Speed and In-Cylinder Flow Field for Stratified and Well-Mixed DISI Engine Combustion Using E70 , 2014 .

[68]  Frediano V. Bracco,et al.  Investigation of the Fuel Distribution in a Two-Stroke Engine with an Air-Assisted Injector , 1994 .

[69]  J. M. Lewis.  UPS Multifuel Stratified Charge Engine Development Program-Field Test , 1986 .

[70]  Erik Schünemann,et al.  Potentials of the Spray-Guided BMW DI Combustion System , 2006 .

[71]  J. M. Cobb,et al.  Design and Evaluation of a Stratified Charge Multifuel Military Engine , 1968 .

[72]  Zhiyu Han,et al.  CFD Modeling of a Vortex Induced Stratification Combustion (VISC) System , 2004 .

[73]  Gerald A. Szekely,et al.  A Comparison of Spray-Guided Stratified-Charge Combustion Performance with Outwardly-Opening Piezo and Multi-Hole Solenoid Injectors , 2011 .

[74]  Daniel C. Haworth,et al.  Advanced gasoline engine development using optical diagnostics and numerical modeling , 2007 .

[75]  Heiko Kubach,et al.  Effects of increased injection pressures of up to 1000 bar – opportunities in stratified operation in a direct-injection spark-ignition engine , 2010 .

[76]  V. Sick,et al.  High-speed imaging analysis of misfires in a spray-guided direct injection engine , 2011 .

[77]  Alex C. Alkidas,et al.  Combustion advancements in gasoline engines , 2007 .

[78]  Harry L. Husted,et al.  Fuel Efficiency Improvements from Lean, Stratified Combustion with a Solenoid Injector , 2009 .

[79]  U. Spicher,et al.  Application of Particle Image Velocimetry for Investigation of Spray Characteristics of an Outward Opening Nozzle for Gasoline Direct Injection , 2006 .

[80]  A. Simko,et al.  Exhaust Emission Control by the Ford Programmed Combustion Process - PROCO , 1972 .

[81]  Volker Sick,et al.  High-speed imaging for direct-injection gasoline engine research and development , 2010 .

[82]  Richard Van Basshuysen,et al.  Gasoline Engine with Direct Injection: Processes, Systems, Development, Potential , 2009 .

[83]  Michael Wensing,et al.  Fuel property and fuel temperature effects on internal nozzle flow, atomization and cyclic spray fluctuations of a direct injection spark ignition–injector , 2013 .

[84]  Andreas M. Lippert,et al.  Stratified-charge combustion: modeling and imaging of a spray-guided direct-injection spark-ignition engine , 2005 .

[85]  Volker Sick,et al.  High-speed fuel tracer fluorescence and OH radical chemiluminescence imaging in a spark-ignition direct-injection engine. , 2005, Applied optics.

[86]  Hiromitsu Ando,et al.  Concept of lean combustion by barrel-stratification , 1992 .

[87]  Ulrich Spicher,et al.  Investigations on Supercharging Stratified Part Load in a Spray-Guided DI SI Engine , 2008 .

[88]  Dirk Abel,et al.  Combustion model reduction for diesel engine control design , 2009 .

[89]  Brian Peterson,et al.  High-Speed Flow and Fuel Imaging Study of Available Spark Energy in a Spray-Guided Direct-Injection Engine and Implications on Misfires , 2010 .

[90]  M. C. Drake,et al.  Flow, Mixture Preparation and Combustion in Direct-Injection Two-Stroke Gasoline Engines , 2008 .

[91]  Heiko Kubach,et al.  Investigations of Spray-Induced Vortex Structures during Multiple Injections of a DISI Engine in Stratified Operation Using High-Speed-PIV , 2013 .

[92]  Ulrich Spicher,et al.  Potential of spray-guided gasoline direct injection for reduction of fuel consumption and simultaneous compliance with stricter emissions regulations , 2013 .

[93]  I. N. Bishop,et al.  A New Concept of Stratified Charge Combustion — The Ford Combustion Process (FCP) , 1968 .

[94]  Michael C. Drake,et al.  Piston Fuel Films as a Source of Smoke and Hydrocarbon Emissions from a Wall-Controlled Spark-Ignited Direct-Injection Engine , 2003 .

[95]  Wei Zeng,et al.  PIV examination of spray-enhanced swirl flow for combustion stabilization in a spray-guided stratified-charge direct-injection spark-ignition engine , 2015 .

[96]  Loic De Francqueville,et al.  Effects of Ethanol Addition in RON 95 Gasoline on GDI Stratified Combustion , 2011 .

[97]  Yannis Hardalupas,et al.  Influence of Injection Timing on In-Cylinder Fuel Distribution in a Honda VTEC-E Engine , 1995 .

[98]  Charles D. Wood,et al.  UNTHROTTLED OPEN-CHAMBER STRATIFIED CHARGE ENGINES , 1978 .