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The Time History of the Mixture Formation Process in a Lean Burn Stratified-Charge Engine
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Abstract
The mixture formation process in a stratified-charge spark-ignition engine under moderate load conditions has been determined from fuel concentration measurements obtained from planar laser-induced fluorescence (PLIF) of a fluorescence fuel marker, 3-pentanone. A one-cylinder 4-valve engine, specifically designed to provided optical access through the walls of the combustion chamber and through a piston window, was used. In order to gain insight into the processes influencing the fuel motion and mixing, average fuel concentrations were recorded in four different planes between 0.7 mm to 15 mm below the spark plug for various crank-angle positions during the inlet and compression stroke and for two different injection timings. These measurements give a mean 3-dimensional picture of the time history of the fuel distribution. The results show the presence of an axial fuel stratification in the cylinder up to the time of ignition, the degree of this stratification was found to be a function of injection timing. Fuel impinging on the cylinder wall, opposite to the inlet valves, was found to have a important influence on the mixture formation process in this type of engine geometry.
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Berckmüller, M., Tait, N., and Greenhalgh, D., "The Time History of the Mixture Formation Process in a Lean Burn Stratified-Charge Engine," SAE Technical Paper 961929, 1996, https://doi.org/10.4271/961929.Also In
References
- Matsushita S Inoue T Nakanishi K Kato K Kobayashi N Development of the Toyota Lean Burn Combustion System SAE 850044 1985
- Heywood J B Internal Combustion Engine Fundamentals MacGraw-Hill 1988
- Horie K Nishizawa K Ogawa T Akazaki S Miura K The Development of a High Fuel Economy and High Performance Four-Valve Lean Burn Engine SAE 920455 1992
- Kiyota Y Akishino K Ando H Concept of Lean Combustion by Barrel-Stratification SAE 920678 1992
- Iwamoto Y Danno Y Hirako O Fukui T Murakami N The 1.5-Liter Vertical Vortex Engine SAE 920670 1992
- Quader A A The Axially-Stratified-Charge Engine SAE 820131 1982
- Inoue T Matsushita S Nakanishi K Okano H Toyota Lean Combustion System - 3rd Generation System SAE 930873 1993
- Hardalupas Y Taylor AMKP Whitelaw J H Ishii K Miyano H Urata Y Influence of Injection Timing on In-Cylinder Fuel Distribution in a Honda VTEC-E Engine SAE 950507 1995
- Mikulic L A Quissek F Fraidl G K Carstensen H Sequentielle Einspritzstrategien für verbrauchsoptimierte Ottomotorkonzepte 286 293 1990
- Berckmüller M Tait N P Greenhalgh D A A Study of the Influence of Local Fuel Concentration on the Performance of a Lean Burn Engine Proceedings of the ‘Joint Meeting of the Portugese, British, Spanish and Swedish Sections of the Combustion Institute’ Funchal, Madeira 1996
- Fansler T D French D T Drake M C Fuel Distribution in a Firing Direct Injected SI-Engine Using Laser Induced Fluorescence Imaging SAE 950110 1995
- Arnold A Buschmann A Cousyn B Decker M Vannobel F Sick V Wolfrum J Simultaneous Imaging of Fuel and Hydroxyl Radicals in an In-Line Four Cylinder SI-Engine SAE 932696 1993
- Berckmüller M Tait N P Greenhalgh D A Ishii K Urata Y Umiyama H Yoshida K In-cylinder Imaging of Fuel Concentration using Planar Laser-Induced Fluorescence C485/027 IMechE 1994
- Berckmüller M Tait N P Lockett R D Greenhalgh D A Ishii K Urata Y Umiyama H Yoshida K Twenty-Fifth Symposium (International) on Combustion 151 156 1994
- Neij H Johansson B Aldén M Development and Demonstration of 2D-LIF for Studies of Mixture Preparation in SI Engines Combustion and Flame 99 449 457 1994
- Johansson B Neij H Aldén M Juhlin G Investigations of the Influence of Mixture Preparation on Cyclic Variations in a SI-Engine Using Laser Induced Fluorescence SAE 950108 1995
- Becker H Arnold A Suntz R Monkhouse P Wolfrum J Maly R Pfister W Investigation of Flame Structure and Burning Behaviour in an IC Engine Simulator by 2D-LIF of OH Radicals Appl. Phys. B 50 473 478 1990
- Tait N P Greenhalgh D A Laser Induced Fluorescence Imaging of Parent Fuel Fraction in Nonpremixed Combustion Twenty-Fourth Symposium (International) on Combustion/The Combustion Institute 1621 1628 1992
- Hansen D A Lee E K C Radiative and Nonradiative Transition in the First Excited Singlet State of Symmetrical Methyl-Substituted Acetones J. Cem. Phys. 62 1 1975
- Lawrenz W Köhler J Meier F Stolz W Wirth R Bloss W Maly R R Wagner E Zahn M Quantitative 2D LIF Measurements of Air/Fuel Ratios during the Intake Stroke in a Transparent SI-Engine SAE 922320 1992
- Bryce D Development and Application of Laser Diagnostics for Iso-Thermal Mixing and Soot Cranfield University 1996
- Yamada T Hayakawa N Kami Y Kawai T Universal Air-Fuel Ratio Heated Exhaust Gas Oxygen Sensor and further Applications SAE 920234 1992
- Quader A A Lean Combustion and the Misfire Limit in SI-Engines SAE 741055 1974
- Ayusawa T Nemoto T Koo Y Hong Jo S Relationship between Local Air-Fuel Ratio and Combustion Character in SI Engines SAE 780147 1978
- Galliot F Cheng W K Cheng C O Stzenderowicz M Heywood J B Collings N In-Cylinder Measurements of Residual Gas Concentration in a SI-Engine SAE 900485 1990
- Lucht R P Teets R E Green R M Palmer R E Ferguson C R Unburned Gas Temperatures in an Internal Combustion Engine. I: Cars Temperature Measurements Combust. Sci. and Tech. 55 41 61 1987
- Marie J J Cottereau M J Single-Shot Temperature Measurements by Cars in an I. C. Engine for Normal and Knocking Conditions SAE 870458 1987
- Seitzman J M Kychakoff G Hanson R K Instantaneous Temperature Field Measurements Using Laser-Induced Fluorescence Optics Letters 10 9 439 441 1985
- Merdjani S Sheppard C G W Gasoline Engine Cycle Simulation Using the Leeds Turbulent Burning Velocity Correlations SAE 932640 1993
- McBride B J Sanford G Reno M A Coefficients for Calculating Thermodynamic and Transport Properties of Individual Species NASA Technical Memorandum 4513 1993