Studies on Spray and Combustion Characteristics of Throttle Type Nozzle Used in a Swirl-Chamber Diesel Engine 2022-32-0068
Among industrial engines, vortex chamber diesel engines are mainly used in small engines with output of less than 19 kW, and they employ an indirect injection system in which fuel is injected into a sub-chamber called a vortex chamber. The throttle-type nozzle used in swirl-chamber diesel engines is expected to change its spraying behavior depending on ambient conditions because the pressure fluctuations in the nozzle cause the needle valve to lift, and the injection amount is controlled by the amount of lift of the needle valve. In addition, the dimensions of the vortex chamber of a vortex chamber diesel engine are smaller than the spray development distance, and wall impingement of the spray is expected. In this study, spraying and combustion experiments were conducted using a constant volume chamber to understand the behavior of the spray from a throttle-type nozzle. Then, based on the obtained data, we developed a numerical simulation model to reproduce the hollow spraying behavior of a throttle nozzle.
Citation: Sudo, Z., Zhou, B., Hozen, Y., Kusaka, J. et al., "Studies on Spray and Combustion Characteristics of Throttle Type Nozzle Used in a Swirl-Chamber Diesel Engine," SAE Technical Paper 2022-32-0068, 2022, https://doi.org/10.4271/2022-32-0068. Download Citation
Author(s):
Zenta Sudo, Beini Zhou, Yuma Hozen, Jin Kusaka, Kenya Ajiro, Tomohiro Koga
Affiliated:
Waseda Univercity, Mitsubishi Heavy Industries Engine & Turbocharger, Ltd., Mitsubishi Heavy Industries, Ltd.
Pages: 11
Event:
The 26th Small Powertrains and Energy Systems Technology Conference
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Diesel / compression ignition engines
Combustion and combustion processes
Computer simulation
Fuel injection
Nozzles
Engines
Throttles
Valves
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