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Combined Catalytic Hot Wires Probe and Fuel-Air-Ratio-Laser Induced-Exciplex Fluorescence Air/Fuel Ratio Measurements at the Spark Location Prior to Ignition in a Stratified GDI Engine
Technical Paper
1999-01-3536
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Combined Catalytic Hot Wires Probe (CHWP) and Fuel Air Ratio Laser Induced Exciplex Fluorescence (FARLIEF) techniques have been applied to a Gasoline Direct Injection Engine to characterize temporal and spatial evolution of the fuel/air ratio in the vicinity of the spark plug. The engine ran below stoichiometric with early injection (homogenous case taken as a reference) or late injection timing with a global equivalence ratio as low as 0.3. Under lean and late injection conditions, the temporal CHWP signal indicates that a rich vapor cloud is carried to the vicinity of the spark plug. CHWP and FARLIEF techniques show that the maximum equivalence ratio in the fuel cloud reaching the spark does not depend on the injection duration. Instead, the duration appeared to affect the size of this rich vapor pocket.
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Citation
Deschamps, B., Ricordeau, V., Depussay, E., and Mounaïm-Rousselle, C., "Combined Catalytic Hot Wires Probe and Fuel-Air-Ratio-Laser Induced-Exciplex Fluorescence Air/Fuel Ratio Measurements at the Spark Location Prior to Ignition in a Stratified GDI Engine," SAE Technical Paper 1999-01-3536, 1999, https://doi.org/10.4271/1999-01-3536.Also In
References
- Baritaud T. Heinze T “Gasoline Distribution Measurements with PLIF in a SI Engine” SAE Paper 922355 1992
- Neij H. Johannsson B. Aldén M. “Development and Demonstration of 2D-LIF, for Studies of Mixture Preparation in SI Engines” 25th Symp (Int) on Combustion Irvine July 31st August 5th 1994
- Reboux J. Puechberty D. Dionnet F. Study of mixture inhomogeneities and combustion development in a S.I. engine using a new approach to laser induced fluorescence SAE Paper 961205
- Skippon S.M. Nattrass S.R. Kitching J.S. Hardiman L. Miller H. “Effects of fuel Composition on In-Cylinder Air/Fuel ratio During Transients in a SI Engine, Measured using Differential Infra-Red Absorption SAE Paper 961204 1996
- Kawamura K. Suzuoki T. Saito A. Tomoda T. Kanda M. “Development of instrument for measurement of fuel-air ratio in vicinity of spark plug: application to DI gasoline engine” JSAE review 19 305 306 1998
- Collings N. “A new technique for measuring HC concentration in real Time, in a Running Engine SAE Paper 880517 1988
- Di Cocco E. Université de Versailles Saint Cyr L'Ecole 1998
- Depussay E. Mounaïm-Rousselle C. Burnel S. Ricordeau V. Deschamps B. “Comparative measurements of local iso-octane concentrations by Planar Laser Induced Fluorescence and Catalytic Hot Wires Probe in SI Engines SAE Paper 982474 1998
- Kakuhou A. Urushihara T. 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
- Alger T. Hall M. Matthews R. « Fuel spray dynamics and fuel vapo concentration near the spark plug in DI 4-valve SI engine » SAE 1999-01-0497
- Deschamps B. Ricordeau V Visualisation du carburant et de la combustion dans un moteur IDE à géométrie réelle
- Le Coz J.F. “Comparison of different Drop sizing techniques on direct injection gasoline sprays” 9Th International Symposium on Applications of Laser Techniques to Fluid Mechanics Lisbon 1998
- Ipp W Wagner V. Krämer H. Wensing M. Leiperz A. Arnt S Jain A. “Spray formation of high pressure swirl gasoline injectors investigated by two Dimentional Mie and LIEF Techniques” SAE paper 1999-01-0498
- Depussay E. Mounaïm-Rousselle C. Brunel S. “Experimental study of a new technique for the estimate of the local fuel ratio in engine environment” International Colloquium of Engines (ICE97) Capri Sept.
- Depussay E. Université d'Orléans 1998
- Knibbe H. Rehm D. Weller A. Physik. Chem. 73 839
- Münch K.-U. Kramer H. Leipertz A. Investigation of fuel evaporation inside the intake of a S.I. Engine using L.I.E.F. with a new seed SAE Paper 961930 1996
- Ortolan G. Deschamps B. “Separate Vapor/Liquid visualization with Laser-Induced Exciplex Fluorescence applied to Gasoline Direct Injection engines.” 10th Gordon Research Conference on “Laser Diagnostics” Ciocco Italy june 20th to 25th 1999
- Fröba A.P. Rabenstein F. Münch K.-U. Leipertz A. Mixture of T.E.A. and benzene as a new seeding material for the quantitative two-dimensional L.I.E.F. imaging of Vapor and liquid fuel inside S.I. engines Comb. & Flame 112 199 209 1998