![]() High-speed long-distance microscopy is applied to visualize the flow, cavitation, and gas exchange within the hole and sac. The nozzles are mounted and sealed inside a small, pressurized vessel and operated at realistic injection pressures (to 1000 bar). The transparent injector nozzles are manufactured with real size and shape compared to the original metal injector. As shown below, a regular diesel or gasoline injector is ground flat below the needle sealing surface and replaced with a transparent nozzle (acrylic or other transparent material). Understanding of sprays and injector flow is enhanced by using a unique transparent nozzle research vessel. Beyond gaining fundamental knowledge about these processes, we use the information to improve computational fluid dynamic models, which in turn are used to optimize engine designs. Data obtained in these facilities are used to provide detailed understanding of the spray and combustion phenomena at relevant engine conditions. (2) High-speed, continuous-flow spray chamber Facility Capabilities ParametersĬRF researchers use advanced laser and optical diagnostics to study the fundamental spray and combustion processes. Alternative Fuels Direct-Injection Spark-Ignition Engine Laboratory.Gasoline Combustion Fundamentals Laboratory.Low-Temperature Gasoline Engine Combustion Laboratory.Off-Road Diesel Engine Combustion Laboratory.Heavy-Duty Diesel and Gaseous-Fueled Engine Laboratory.Heavy-Duty Engine Combustion and Fuel Effects Lab. ![]() Spectroscopy and Light-Matter Interactions.Spatially and Temporally Resolved Diagnostics.A Department of Energy Office of Science Collaborative Research Facility
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