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In-Cylinder Measurements of Fuel Stratification in a Twin-Spark Three-Valve SI Engine
Technical Paper
2004-01-1354
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In order to take advantage of different properties of fuel components or fractions, a new concept of fuel stratification has been proposed by the authors. This concept requires that two fractions of standard gasoline (e.g., light and heavy fractions) or two different fuels in a specially formulated composite be introduced into the cylinder separately through two separate intake ports. The two fuels will be stratified into two regions in the cylinder by means of strong tumble flows. In order to verify and optimize the fuel stratification, a two-tracer Laser Induced Fluorescence (LIF) technique was developed and applied to visualize fuel stratification in a three-valve twin-spark SI engine. This was realized by detecting simultaneously fluorescence emissions from 3-pentanone in one fuel (hexane) and from N,N-dimethylaniline (DMA) in the other fuel (iso-octane). Spectral analysis showed that when subject to irradiation by an Excimer laser at 308nm, 3-Pentanone and DMA emitted fluorescence at two different wavelength regions that could be effectively separated by means of two band-pass optical filters in a specially designed image doubling and filtering system. Measurements were carried out in a single cylinder Ricardo Hydra Engine with optical access, at a horizontal plane 5mm below the cylinder head and the vertical plane along the roof edge line. Measurement results in both planes showed that fuel stratification was present from the early intake stroke to the late stage of the compression stroke.
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Citation
Li, Y., Zhao, H., Leach, B., Ma, T. et al., "In-Cylinder Measurements of Fuel Stratification in a Twin-Spark Three-Valve SI Engine," SAE Technical Paper 2004-01-1354, 2004, https://doi.org/10.4271/2004-01-1354.Also In
References
- Omori S. Iwachido K. Motomochi M. Hirako O. Effect of Intake Port Flow Pattern on the In-Cylinder Tumbling Air Flow in Multi-Valve SI Engines SAE paper 910477
- Iwamoto Yasuhiko Danno Yoshiaki Hireko Osamu Fukui Toyoaki Murakami Nobuaki The 1.5-Liter Vertical Vortex Engine SAE 920670
- Kiyota, Y. Akishino, K. Ando, H. Concept of Lean Combustion by Barrel-Stratification SAE paper 920678
- Kuwahara K. Watanabe T. Takemura J. Omori S. Kume T. Ando H. Optimization of In-Cylinder Flow and Mixing for a Center-Spark Four-Valve Engine Employing the Concept of Barrel-Stratification SAE paper 940986
- Strokes, J. Lake, T.H. Christie, M.J. Denbraltt, I. Improving the NOx/Fuel Economy Trade-off for Gasoline Engine with the CCVS Combustion System SAE paper 940482 1994
- Kume, T. Iwamoto, Y. Lida, K. Murakami, M. Akishino, K. Ando, H. Combustion Control Technologies for Direct Injection SI Engine SAE 960600 1996
- Iwamoto, Y. Noma, K. Yamauchi, T. Ando, H. Development of Gasoline Direct Injection Engine SAE paper 970541 1997
- Kakuhou, A. Urushihara, O. Itoh, T. Takagi, Y. Characteristics of Mixture Formation in a Direct Injection SI Engine with Optimized in-cylinder Swirl air Motion SAE paper 1999-01-0505 1999
- Berckmüller Martin Tait Nigel P. Greenhalgh Douglas A. The Time History of the Mixture Formation Process in a Lean Burn Stratified-Charge Engine SAE paper 961929
- Berckmüller Martin Tait Nigel P. Greenhalgh Douglas A. The Influence of Local Fuel Concentration on Cyclic Variability of a Lean Burn Stratified-Charge Engine SAE paper 970826
- Urushihara Tomonori Nakata Tsutomu Kakuhou Akihiko Takagi Yasuo Effects of Swirl and Tumble Motion on Fuel Vapor Behavior and Mixture Stratification in Lean Burn Engine JSAE Review 17 1996 239 244
- Baritaud T.A. Heinze T.A. Gasoline Distribution Measurements with PLIF in a SI Engine SAE paper 922355
- Deschamps Béatrice Snyder Ray Baritaud Thierry Effect of Flow and Gasoline Stratification on Combustion in a 4-Valve SI Engine SAE paper 941993
- Neij Hans Johansson Bengt Aldén Marcus Development and Demonstration of 2D-LIF for Studies of Mixture Preparation in SI Engines Combustion and Flame 99 449 457 1994
- Meyer J. Haug M. Schreiber M. Unverzagt S. Controlling Combustion in a Spark Ignition Engine by Quantitative Fuel Distribution SAE paper 950107
- Hishinuma Hiroko Urushihara Tomonori Kakuho Akihiko Itoh Teruyuki Development of a Technique for Quantifying In-Cylinder A/F Ratio Distribution Using LIF Image Processing JSAE Review 17 1996 335 359
- Lawrenz W. Köhler J. Meier F. Stolz W. Wirth R. Bloss W.H. Maly R.R. Wangner E. Zahn M. Quantitative 2D LIF Measurements of Air/Fuel Ratios During the Intake Stroke in a Transparent SI Engine SAE paper 922320
- Johansson Bengt Neij Hans Aldén Marcus Juhlin Greger Investigation on Cyclic Variations in a SI-Einge, Using Laser Induced Fluorescence SAE paper 950108
- Reboux J. Puechberty D. Dionnet F. A New Approach of Planar Laser Induced Fluorescence Applied to Fuel/Air Ratio Measurement in the Compression Stroke of an Optical SI Engine SAE paper 941988
- Reboux J. Puechberty D. Dionnet F. Study of Mixture Inhomogeneities and Combustion Development in a SI Engine Using a New Approach of Laser Induced Fluorescence (FARLIF) SAE paper 961205
- Fröba A.P. Rabenstein F. Münch K.-U. Leipertz A. Mixture of Triethylamine (TEA) and Benzene as a New Seeding Material for the Quantitative Two-Dimensional Laser-Induced Exciplex Fluorescence Imaging of Vapor and Liquid Fuel Inside SI Engines Combustion and Flame 112 199 209 1998
- Ipp Wolfgang Egermann Jan Wagner Volker Schmitz Ingo Leipertz Alfred Two-Dimensional Mapping and Quantification of the In-Cylinder Air/Fuel-Ratio in a GDI Engine by Means of LIF COMODIA 2001
- Kornmesser C. Müller T. Beushausen V. Hentschel W. Andresen P. Applicability of Different Exciplex Tracers and Model Fuels for Investigation of Mixture Formation in Direct Injection Gasoline COMODIA 2001
- Styron J.P. Kelly-Zion P.L. Lee C.F. Peters J.E. White R.A. Lucht R.P. Multicomponent Liquid and Vapor Fuel Distribution Measurements in the Cylinder of a Port-Injected, Spark-Ignition Engine SAE paper 2000-01-0243
- Krämer Heinz Einecke Svenja Schulz Christof Sick Volker Nattrass Steve R. Kitching John S. Simultaneous Mapping of the Distribution of Different Fuel Volatility Classes Using Tracer-LIF and NIR-Tomography in an IC Engine SAE paper 982467
- Swindal J.Christian Dragonetti Douglas P. Hahn Robert T. Furman Peter A. Acker William P. In-Cylinder Charge Homogeneity During Cold-Start Studied with Fluorescent Tracers Simulating Different Fuel Distillation Temperatures SAE paper 950106
- Li Yufeng Zhao Hua leach Ben Ma Tom Ladommatos Nocos Optimisation of In-Cylinder Flow for Fuel Stratification in a Three-Valve Twin-Spark-Plug SI Engine SAE paper 2003-01-0635
- Zhao Hua Ladommatos Nicos Engine Combustion Instrumentation and Diagnostics Society of Automotive Engineerings, Inc. 0-7680-0665-1 2001
- Le Coz Jean-François Hermant Laurent Quantification of Fuel Concentrations and Estimation of Liquid/Vapor Ratios in Direct Injection Sprays by Laser-Induced Fluorescence SAE paper 2001-01-0916