The investigation of macroscopic features of a gasoline spray in a non-evaporative condition

Name: S. Thongchai

Organization : University of Ulsan. Graduate School of Mechanical Engineering

Name: O. Lim

Organization : University of Ulsan. School of Mechanical Engineering

Email : otlim@ulsan.ac.kr

ThaSH: Engines -- Fuel systems

ThaSH: Benzene as fuel -- Sulfur content

Abstract: This paper focuses on the gasoline spray characteristics added biodiesel 5 percent to apply in gasoline compression ignition engines. Spray macroscopic visualization was performed by planar laser-induced fluorescence (PLIF) technique. The spray characteristics were, therefore, conducted by varying high injection pressures with the common rail diesel system of a diesel engine and controlling ambient pressure (back pressure) by filling nitrogen gas in the constant volume combustion chamber (CVCC). The test fuel, gasoline blended with biodiesel 5 percent (GB05), and conventional diesel as the reference were performed to compare its behavior. Chemical and physical properties of the GB05, gasoline, and biodiesel including viscosity, density, lubricity, cloud and pour point were measured. A high-speed video camera was employed to record the spray pattern with frame speed 10,000 f/s. The spray penetration length and cone angle were measured and analyzed by image processing. Structure and density profiles were analyzed. As expected, 5 percent concentration of biodiesel significantly affected to enhance lubricity property of the GB. With small biodiesel concentration, the lubricity improves. When. injection pressure was increased, the spray-penetration length was increased whereas the spray cone angle was slightly decreased. Under higher injection pressure, the turbulent structures are remarkable.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2018

Modified: 2025-06-13

Issued: 2025-06-13

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BibliograpyCitation : In Thammasat University Faculty of Engineering. The 9th TSME International Conference on Mechanical Engineering 2018 (TSME-ICoME9) (pp.101-106) Pathum Thani : Thammasat University

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