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Influence of Injection Timing on In-Cylinder Fuel Distribution in a Honda VTEC-E Engine
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English
Abstract
Measurements are presented of droplet characteristics and air velocity in the cylinder of a 0.36 litre four valve engine, equipped with an sohc VTEC-E valve train and port injection. The results
show that injection at crank angles, θinj(s), when the inlet valve is open results in most of the liquid volume flux being in the form of droplets with Sauter mean diameter between 20 and 30 mm which strikes the sleeve up to about 2.5 cm below the exhaust valves, thus generating a locally rich cloud there. The amount of liquid phase gasoline passing through the plane 16 mm below the spark plug gap increases with θinj(s) up to 50 CA after intake TDC and this, together with the crank angle of droplet arrival and vapour generation, controls stratification of the gaseous fuel phase. The optimum injection time is when the fuel-rich cloud is generated so that the tumble vortex convects it to the spark plug at the time of ignition.
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Hardalupas, Y., Taylor, A., Whitelaw, J., Ishii, K. et al., "Influence of Injection Timing on In-Cylinder Fuel Distribution in a Honda VTEC-E Engine," SAE Technical Paper 950507, 1995, https://doi.org/10.4271/950507.Also In
References
- 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 paper 920455 1992
- Matsushita, S Inoue, T Nakanishi, K Kato, K Kobayashi, N “Development of Toyota lean combustion system” SAE paper 850044 1985
- Minamitani, K Hosokai, T Nishioka, F Hori, Y Terao, H Nishi, H “Lean burn engine management system and its distinctive features” JSAE paper 9437025 1994
- Quader, A A “The axially-stratified-charge engine” SAE paper 820131 1982
- Bandel, W Fraidl, G K Mikulic, L A Carstensen, H Quissek, F “Investigation of mixture preparation and charge motion effects on the combustion of fast-burn engines” SAE paper 890160 1989
- Bopp, S Vafidis, C Whitelaw, J H “The effect of engine speed on the TDC flow field in a motored reciprocating engine” SAE paper 860023 1986
- Nakanishi, K Iguchi, S Okano, H Okumura, T Furuno, S “Developmentof a new intake system for a 4-valve lean burn engine” FISITA paper 925020 1992
- Liou, T-M Santavica, D A “Cycle-resolved measurements in a ported engine with and without swirl” SAE paper 830419 1983
- Hall, M J Bracco, F V “A study of velocities and turbulence intensities measured in firing and motored engines” SAE paper 870453 1987
- Inoue, T Matsushita, S Nakanishi, K Okano, H “Toyota lean combustion system: the third generation system” SAE paper 93087 1993
- Hardalupas, Y Okamoto, S Taylor, A M K P Whitelaw J H. “Application of a phase-Doppler anemometer to a spray impinging on a disk” Adrian R J Durão D F G Durst F Heitor M V Maeda M Whitelaw J H Laser Anemometry in Fluid Mechanics 6 490 506 Springer Verlag Berlin 1993
- Posylkin, M Taylor, A M K P Whitelaw, J H “Manifold injection and the origin of droplets at the exit of an inlet valve” 7th International Symposium on Applications of Laser Techniques to Fluid Mechanics 1994
- Berckmüller, M Tait, N P Lockett, R D Greenhalgh D A “In-cylinder crank angle resolved imaging of fuel concentration in a firing sparkignition-engine using planar LIF” Twenty-fifth Symposium (International) on Combustion Irvine CA 1994
- Hardalupas, Y “Description of the Thermofluids Section ‘model 3’ phase Doppler counter” Mechanical Engineering Department, Imperial College 1993
- Hardalupas, Y Taylor, A M K P “On the measurement of particle concentration near a stagnation point” Experiments in Fluids 8 113 118 1989
- Hardalupas, Y Taylor, A M K P Whitelaw, J H “Liquid fuel mass flux, fraction and concentration distributions in a swirl-stabilised flame” International Journal of Multiphase Flow 20 233 259 1994
- Arcoumanis, A Hull, D R Whitelaw, J H “An approach to charge stratification in lean-burn spark ignition engines” SAE paper 941878 1994