In-cylinder fuel distribution in a port-injected model engine using Rayleigh scattering

• Published in: Experiments in fluids Vol. 11; no. 6; pp. 375 - 387
• Main Authors: ARCOUMANIS, C, ENOTIADIS, A. C
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01-10-1991; Berlin
• Subjects: Applied sciences; Energy; Energy. Thermal use of fuels; Engines and turbines; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc; Exact sciences and technology; flow visualization; fuel injection; internal combustion engines; Rayleigh scattering; Rayleigh scattering; Motor fuel injection; Freon; Laser; Air fuel ratio; Spark ignition engine; Concentration distribution
• ISSN: 0723-4864; 1432-1114
• DOI: 10.1007/BF00211792

The spatial and temporal variation of the fuel concentration (air/fuel ratio) in a model engine was quantified by laser Rayleigh scattering. Fuel was simulated by gaseous Freon-12 injected at various timings and quantities into the intake port. The results showed that the fuel concentration in the engine cylinder was strongly dependent on the injection timing and duration and that the Rayleigh system was able to identify spatial variations of the order of one air/fuel ratio at realistic mixture strengths.