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Erschienen in: Journal of Visualization 3/2014

01.08.2014 | Regular Paper

A dynamic thresholding technique for extracting the automotive spark-ignition direct-injection pulsing spray characteristics

verfasst von: Hao Chen, David L. S. Hung, Min Xu, Jie Zhong

Erschienen in: Journal of Visualization | Ausgabe 3/2014

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Abstract

The macroscopic characteristics of fuel injection spray are crucial for spark-ignition direct-injection (SIDI) engines. To precisely quantify the macroscopic spray characteristics such as spray penetration length and spray angle, it is essential to determine the boundary of the spray structure from the images. Thresholding method is widely used for the spray boundary detection. It is normally achieved by selecting a single global thresholding value to distinguish the spray boundary from the image background. In this paper, a novel technique of dynamic thresholding, in which the threshold value is dynamically determined by the image local pixel intensity property in the vicinity of the spray boundary, is proposed. To evaluate the accuracy of the technique, a symmetric spray with well-defined geometry was used. The dynamic threshold method effectively reduced the difference between the right and left half-angles of the spray to only 0.5°, which is much smaller than the difference of as large as 3–4° obtained using global thresholding method. Similar results have been obtained for the spray penetration length measurements. Therefore, the proposed thresholding algorithm provides more accurate evaluation of macroscopic spray characteristics than the single-value global thresholding technique.

Graphical Abstract

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Literatur
Zurück zum Zitat Andriotis A, Spathopoulou M, Gavaises M (2007) Effect of nozzle flow and cavitation structures on spray development in low-speed two-stroke diesel engines. In: Proceedings of international council on combustion engines (CIMAC) Andriotis A, Spathopoulou M, Gavaises M (2007) Effect of nozzle flow and cavitation structures on spray development in low-speed two-stroke diesel engines. In: Proceedings of international council on combustion engines (CIMAC)
Zurück zum Zitat Berrocal E, Kristensson E, Hottenbach P, Aldén M, Grünefeld G (2012) Quantitative imaging of a non-combusting diesel spray using structured laser illumination planar imaging. Appl Phys B 109(4):683–694. doi:10.1007/s00340-012-5237-9 CrossRef Berrocal E, Kristensson E, Hottenbach P, Aldén M, Grünefeld G (2012) Quantitative imaging of a non-combusting diesel spray using structured laser illumination planar imaging. Appl Phys B 109(4):683–694. doi:10.​1007/​s00340-012-5237-9 CrossRef
Zurück zum Zitat Chen H, Hung DLS, Xu M, Zhong J (2013) Analyzing the cycle-to-cycle variations of pulsing spray characteristics by means of the proper orthogonal decomposition. At Sprays 23(7):623–641. doi:10.1615/AtomizSpr007851 CrossRef Chen H, Hung DLS, Xu M, Zhong J (2013) Analyzing the cycle-to-cycle variations of pulsing spray characteristics by means of the proper orthogonal decomposition. At Sprays 23(7):623–641. doi:10.​1615/​AtomizSpr007851 CrossRef
Zurück zum Zitat Hung DLS, Chmiel DM, Markle LE (2003) Application of an imaging-based diagnostic technique to quantify the fuel spray variations in a direct-injection spark-ignition engine. SAE Technical Paper 2003-01-0062 Hung DLS, Chmiel DM, Markle LE (2003) Application of an imaging-based diagnostic technique to quantify the fuel spray variations in a direct-injection spark-ignition engine. SAE Technical Paper 2003-01-0062
Zurück zum Zitat Hung DLS, Zhu GG, Winkelman JR, Stuecken T, Schock H, Fedewa A (2007) A high speed flow visualization study of fuel spray pattern effect on mixture formation in a low pressure direct injection gasoline engine. SAE Technical Paper 2007-01-1411 Hung DLS, Zhu GG, Winkelman JR, Stuecken T, Schock H, Fedewa A (2007) A high speed flow visualization study of fuel spray pattern effect on mixture formation in a low pressure direct injection gasoline engine. SAE Technical Paper 2007-01-1411
Zurück zum Zitat Hung DLS, Harrington DL, Gandhi AH, Markle LE, Parrish SE, Shakal JS, Sayar H, Cummings SD, Kramer JL (2009) Gasoline fuel injector spray measurement and characterization: a new SAE J2715 Recommended Practice. SAE Int J Fuels and Lubr 1(1):534–548. doi:10.4271/2008-01-1068 Hung DLS, Harrington DL, Gandhi AH, Markle LE, Parrish SE, Shakal JS, Sayar H, Cummings SD, Kramer JL (2009) Gasoline fuel injector spray measurement and characterization: a new SAE J2715 Recommended Practice. SAE Int J Fuels and Lubr 1(1):534–548. doi:10.​4271/​2008-01-1068
Zurück zum Zitat Koh H, Jung K, Yoon Y, Lee K, Jeong KS (2006) Development of quantitative measurement of fuel mass distribution using planar imaging technique. J Vis 9(2):161–170. doi:10.1007/bf03181759 CrossRef Koh H, Jung K, Yoon Y, Lee K, Jeong KS (2006) Development of quantitative measurement of fuel mass distribution using planar imaging technique. J Vis 9(2):161–170. doi:10.​1007/​bf03181759 CrossRef
Zurück zum Zitat Lefebrve AH (1989) Atomization and sprays. Combustion: an international series. Taylor & Francis, New York Lefebrve AH (1989) Atomization and sprays. Combustion: an international series. Taylor & Francis, New York
Zurück zum Zitat Marchi A, Nouri J, Yan Y, Arcoumanis C (2010) Spray stability of outwards opening pintle injectors for stratified direct injection spark ignition engine operation. Int J Engine Res 11(6):413–437. doi:10.1243/14680874jer605 CrossRef Marchi A, Nouri J, Yan Y, Arcoumanis C (2010) Spray stability of outwards opening pintle injectors for stratified direct injection spark ignition engine operation. Int J Engine Res 11(6):413–437. doi:10.​1243/​14680874jer605 CrossRef
Zurück zum Zitat Mitroglou N, Nouri JM, Gavaises M, Arcoumanis C (2006) Spray characteristics of a multi-hole injector for direct-injection gasoline engines. Int J Engine Res 7(3):255–270. doi:10.1243/146808705x62922 CrossRef Mitroglou N, Nouri JM, Gavaises M, Arcoumanis C (2006) Spray characteristics of a multi-hole injector for direct-injection gasoline engines. Int J Engine Res 7(3):255–270. doi:10.​1243/​146808705x62922 CrossRef
Zurück zum Zitat Mittal M, Hung DS, Zhu G, Schock H (2011) Fuel spray visualization and its impingement analysis on in-cylinder surfaces in a direct-injection spark-ignition engine. J Vis 14(2):149–160. doi:10.1007/s12650-011-0083-0 CrossRef Mittal M, Hung DS, Zhu G, Schock H (2011) Fuel spray visualization and its impingement analysis on in-cylinder surfaces in a direct-injection spark-ignition engine. J Vis 14(2):149–160. doi:10.​1007/​s12650-011-0083-0 CrossRef
Zurück zum Zitat Parrish SE, Zink RJ (2012) Development and application of imaging system to evaluate liquid and vapor envelopes of multi-hole gasoline fuel injector sprays under engine-like conditions. At Sprays 22(8):647–661. doi:10.1615/AtomizSpr006215 CrossRef Parrish SE, Zink RJ (2012) Development and application of imaging system to evaluate liquid and vapor envelopes of multi-hole gasoline fuel injector sprays under engine-like conditions. At Sprays 22(8):647–661. doi:10.​1615/​AtomizSpr006215 CrossRef
Zurück zum Zitat Sezgin M, Bl Sankur (2004) Survey over image thresholding techniques and quantitative performance evaluation. ELECTIM 13(1):146–168. doi:10.1117/1.1631315 Sezgin M, Bl Sankur (2004) Survey over image thresholding techniques and quantitative performance evaluation. ELECTIM 13(1):146–168. doi:10.​1117/​1.​1631315
Zurück zum Zitat Smith SW (1997) The scientist and engineer’s guide to digital signal processing. California Technical Publishing, San Diego Smith SW (1997) The scientist and engineer’s guide to digital signal processing. California Technical Publishing, San Diego
Zurück zum Zitat Stojkovic BD, Fansler TD, Drake MC, Sick V (2005) High-Speed Imaging of OH* and Soot Temperature and Concentration in a Stratified-Charge Direct-Injection Gasoline Engine. Proc Combust Inst 30(2):2657–2665CrossRef Stojkovic BD, Fansler TD, Drake MC, Sick V (2005) High-Speed Imaging of OH* and Soot Temperature and Concentration in a Stratified-Charge Direct-Injection Gasoline Engine. Proc Combust Inst 30(2):2657–2665CrossRef
Zurück zum Zitat Zhao F, Lai MC, Harrington DL (1999) Automotive spark-ignited direct-injection gasoline engines. Prog Energy Combust Sci 25(5):437–562CrossRef Zhao F, Lai MC, Harrington DL (1999) Automotive spark-ignited direct-injection gasoline engines. Prog Energy Combust Sci 25(5):437–562CrossRef
Zurück zum Zitat Zigan L, Schmitz I, Flügel A, Knorsch T, Wensing M, Leipertz A (2010) Effect of fuel properties on spray breakup and evaporation studied for a multihole direct injection spark ignition injector. Energy Fuels 24(8):4341–4350CrossRef Zigan L, Schmitz I, Flügel A, Knorsch T, Wensing M, Leipertz A (2010) Effect of fuel properties on spray breakup and evaporation studied for a multihole direct injection spark ignition injector. Energy Fuels 24(8):4341–4350CrossRef
Zurück zum Zitat Zigan L, Shi J-M, Krotow I, Schmitz I, Wensing M, Leipertz A (2013) Fuel property and fuel temperature effects on internal nozzle flow, atomization and cyclic spray fluctuations of a direct injection spark ignition–injector. Int J Engine Res 14(6):543–556. doi:10.1177/1468087413482320 CrossRef Zigan L, Shi J-M, Krotow I, Schmitz I, Wensing M, Leipertz A (2013) Fuel property and fuel temperature effects on internal nozzle flow, atomization and cyclic spray fluctuations of a direct injection spark ignition–injector. Int J Engine Res 14(6):543–556. doi:10.​1177/​1468087413482320​ CrossRef
Metadaten
Titel
A dynamic thresholding technique for extracting the automotive spark-ignition direct-injection pulsing spray characteristics
verfasst von
Hao Chen
David L. S. Hung
Min Xu
Jie Zhong
Publikationsdatum
01.08.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Journal of Visualization / Ausgabe 3/2014
Print ISSN: 1343-8875
Elektronische ISSN: 1875-8975
DOI
https://doi.org/10.1007/s12650-014-0203-8

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