Experimental Research of High-Temperature and High-Pressure Water Jet Characteristics in ICRC Engine Relevant Conditions

The internal combustion Rankine cycle (ICRC) concept provides a potential solution for future high thermal efficiency and low emission powertrains, and direct water injection (DWI) proved to be the key parameter for ICRC optimization. This paper was dedicated to investigating the fundamental mechanisms of water spray characteristics under different water injection control parameters. In order to do so, an experimental test system was carefully designed and built based on the Bosch and Schlieren methods: the Bosch method is utilized to measure the effect of injection and ambient pressure on water injection characteristics, and the Schlieren method is utilized to investigate the impact of water injection and ambient temperature on water spray and evaporation processes. The experimental results indicate that both control parameters show important effects on water injection and spray characteristics. The water injection and ambient pressure show significant impacts on steady-state flow quantity and cyclic water injection quantity, and the water injection and ambient pressure affect the evaporation ability of water vapor within the spray which leads to a different variation trend during the initial, developing, and developed water spray stages. The results of this work can be used as fundamental supplements for ICRC, steam assistant technology (SAT), and DWI-related ICEs experimental and numerical researches, and provide extra information to understand the DWI process within engine-relevant conditions.

[1]  Zhijun Wu,et al.  Carbon Capture for Automobiles Using Internal Combustion Rankine Cycle Engines , 2009 .

[2]  Wilhelm Bosch,et al.  The Fuel Rate Indicator: A New Measuring Instrument For Display of the Characteristics of Individual Injection , 1966 .

[3]  Zhijun Wu,et al.  Effect of direct water injection during compression stroke on thermal efficiency optimization of common rail diesel engine , 2017 .

[4]  Tao Feng,et al.  Engine operation region based energy management strategy for the All-Wheel-Drive Plug-in Hybrid Electric Vehicle , 2015 .

[5]  Gerardo Valentino,et al.  Experimental and Numerical Study of the Water Injection to Improve the Fuel Economy of a Small Size Turbocharged SI Engine , 2017 .

[6]  Xavier Tauzia,et al.  Experimental study of inlet manifold water injection on combustion and emissions of an automotive direct injection Diesel engine , 2010 .

[7]  C. Pinello,et al.  Automotive engine control and hybrid systems: challenges and opportunities , 2000, Proceedings of the IEEE.

[8]  Lu Yong.  Energy-saving technologies of the unconventional thermal cycle internal combustion engines , 2013 .

[9]  Zhi Wang,et al.  Analysis of pre-ignition to super-knock: Hotspot-induced deflagration to detonation , 2015 .

[10]  G. Kalghatgi.  Is it really the end of internal combustion engines and petroleum in transport? , 2018, Applied Energy.

[11]  Matthias Thewes,et al.  Evaluation of the potential of water injection for gasoline engines , 2017 .

[12]  Ishak Aris,et al.  Direct Injection of Hydrogen, Oxygen, and Water in a Novel Two Stroke Engine. , 2011 .

[13]  Zhijun Wu,et al.  Simulation Study of Water Injection Strategy in Improving Cycle Efficiency Based on a Novel Compression Ignition Oxy-Fuel Combustion Engine , 2018 .

[14]  Zhijun Wu,et al.  Experimental Investigation of Combustion and Emission Characteristics for Internal Combustion Rankine Cycle Engine under Different Water Injection Laws , 2015 .

[15]  Fu Le-zhon.  Experimental Study of Effect of Water Injection on Combustion Stability in Internal Combustion Rankine Cycle Engine , 2014 .

[16]  R. Reitz,et al.  Knocking combustion in spark-ignition engines , 2017 .

[17]  Linjun Wang,et al.  An open steam power cycle used for IC engine exhaust gas energy recovery , 2012 .

[18]  H. Ohashi,et al.  Significant NOx Reductions with Direct Water Injection into the Sub-Chamber of an IDI Diesel Engine , 1995 .

[19]  Li Li-guang.  An Experimental Study of Multiple Injection Rate and Spray Characteristics Based on the Long Tube Method , 2012 .

[20]  S. Akehurst,et al.  A review of water injection applied on the internal combustion engine , 2019, Energy Conversion and Management.

[21]  Leszek Chybowski,et al.  An Engine Room Simulator as a Tool for Environmental Education of Marine Engineers , 2015, WorldCIST.

[22]  Zhijun Wu,et al.  Experimental Study of Ion Current Signals and Characteristics in an Internal Combustion Rankine Cycle Engine Based on Water Injection , 2018, Journal of Engineering for Gas Turbines and Power.

[23]  Alberto A. Boretti,et al.  Water injection in directly injected turbocharged spark ignition engines , 2013 .

[24]  Werner Mährle,et al.  Functional Integration of Water Injection into the Gasoline Engine , 2016 .

[25]  J. Naber,et al.  Water Injection as an Enabler for Increased Efficiency at High-Load in a Direct Injected, Boosted, SI Engine , 2017 .

[26]  Raul Payri,et al.  A new methodology for correcting the signal cumulative phenomenon on injection rate measurements , 2008 .

[27]  James P. Szybist,et al.  A Highly Efficient Six-Stroke Internal Combustion Engine Cycle with Water Injection for In-Cylinder Exhaust Heat Recovery , 2010 .

[28]  Ricardo Vinuesa,et al.  Aspect ratio effect on particle transport in turbulent duct flows , 2016, 1612.01108.

[29]  Chunde Yao,et al.  Investigation of energy transformation and damage effect under severe knock of engines , 2017 .

[30]  C. Bae,et al.  Effects of water direct injection on the torque enhancement and fuel consumption reduction of a gasoline engine under high-load conditions , 2016 .

[31]  D. Henningson,et al.  Pressure-Gradient Turbulent Boundary Layers Developing Around a Wing Section , 2017, Flow, turbulence and combustion.

[32]  Gautam Kalghatgi,et al.  Pre-ignition and ‘super-knock’ in turbo-charged spark-ignition engines , 2012 .

[33]  Zhijun Wu,et al.  Study of the Combustion Characteristics of a HCCI Engine Coupled with Oxy-Fuel Combustion Mode , 2017 .

[34]  William Atkinson,et al.  In Cylinder NOx Emissions Control via Water Injection , 2015 .

[35]  Xin Li,et al.  The Development of a Superheated Liquid Flash, Boiling (S.L.F.B) Engine for Waste Heat Recovery from Reciprocating Internal Combustion Engines , 2014 .

[36]  Ricardo Vinuesa,et al.  Assessment of uncertainties in hot-wire anemometry and oil-film interferometry measurements for wall-bounded turbulent flows , 2018, European Journal of Mechanics - B/Fluids.

[37]  Fu Le-zhon,et al.  Development of Internal Combustion Rankine Cycle Engine Test System , 2013 .

[38]  Zhijun Wu,et al.  Effect of oxygen content on n-heptane auto-ignition characteristics in a HCCI engine , 2016 .

[39]  N. Otsu.  A threshold selection method from gray level histograms , 1979 .

[40]  Detlef Stolten,et al.  The Impact of Drive Cycles and Auxiliary Power on Passenger Car Fuel Economy , 2018 .

[41]  Fabian Hoppe,et al.  Water injection for gasoline engines: Potentials, challenges, and solutions , 2016 .

[42]  Leszek Chybowski,et al.  An overview of systems supplying water into the combustion chamber of diesel engines to decrease the amount of nitrogen oxides in exhaust gas , 2015 .

[43]  Zhijun Wu,et al.  Thermal efficiency boundary analysis of an internal combustion Rankine cycle engine , 2016 .

[44]  Zhijun Wu,et al.  Experimental study of the effect of water injection on the cycle performance of an internal-combustion Rankine cycle engine , 2014 .

[45]  Zhijun Wu,et al.  Study of Combustion Characteristics of a Quasi Internal Combustion Rankine Cycle Engine , 2013 .

[46]  Zhijun Wu,et al.  Effect of Water Injection Temperature on Characteristics of Combustion and Emissions for Internal Combustion Rankine Cycle Engine , 2014 .