Late fuel during closing of the valve of a fuel-injector and fuel films stuck on the wall around the nozzle outlets are sources of PM. In this study, we focused on effects of the valve motions on the late fuel and the fuel films stuck on the walls around the nozzle outlets. We previously developed a particle/grid hybrid method: fuel flows within the flow paths of fuel injectors were simulated by a front capturing method, and liquid-column breakup at the nozzle outlets was mainly simulated by a particle method. The velocity at the inlet boundary of a fuel injector was controlled in order to affect the valve motions on the late-fuel behavior. The simulated late fuel broke up with surface-tension around the time of zero-stroke position of the valve, then liquid columns and coarse droplets formed after the bounds of the valve, and finally only coarse droplets were left. We found that the late fuel was generated by low-speed fuel-flows through the nozzles during the bounds of the valve. The effect of the bounds of the valve on the fuel films stuck on the wall around the nozzle outlets was also studied with a simulation that removed the bounds of the valve. The volume of the fuel films stuck on the wall of the nozzle outlets decreased without the bounds of the valve.
Skip Nav Destination
Sign In or Register for Account
ASME 2015 Internal Combustion Engine Division Fall Technical Conference
November 8–11, 2015
Houston, Texas, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
978-0-7918-5728-1
PROCEEDINGS PAPER
Late-Fuel Simulation Near Nozzle Outlet of Fuel Injector During Closing Valve
Eiji Ishii
,
Eiji Ishii
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
Search for other works by this author on:
Kazuki Yoshimura
,
Kazuki Yoshimura
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
Search for other works by this author on:
Yoshihito Yasukawa
,
Yoshihito Yasukawa
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
Search for other works by this author on:
Hideharu Ehara
Hideharu Ehara
Hitachi Automotive Systems, Ltd., Hitachinaka, Ibaraki, Japan
Search for other works by this author on:
Eiji Ishii
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
Kazuki Yoshimura
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
Yoshihito Yasukawa
Hitachi, Ltd., Hitachinaka, Ibaraki, Japan
Hideharu Ehara
Hitachi Automotive Systems, Ltd., Hitachinaka, Ibaraki, Japan
Paper No:
ICEF2015-1008, V002T06A004; 10 pages
Published Online:
January 12, 2016
Citation
Ishii, E, Yoshimura, K, Yasukawa, Y, & Ehara, H. "Late-Fuel Simulation Near Nozzle Outlet of Fuel Injector During Closing Valve." Proceedings of the ASME 2015 Internal Combustion Engine Division Fall Technical Conference. Volume 2: Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development. Houston, Texas, USA. November 8–11, 2015. V002T06A004. ASME. https://doi.org/10.1115/ICEF2015-1008
Download citation file:
Sign In
10
Views
0
Citations
Related Proceedings Papers
Related Articles
Late-Fuel Simulation Near Nozzle Outlet of Fuel Injector During Closing Valve
J. Eng. Gas Turbines Power (October,2016)
Simulation of Coarse Droplet and Liquid Column Formed around Nozzle Outlets Due to Valve Wobble of a Gasoline Direct Injection Injector
J. Eng. Gas Turbines Power (October,2018)
Effects of Opening and Closing Fuel-Injector Valve on Air/Fuel Mixture
J. Eng. Gas Turbines Power (September,2017)
Related Chapters
A Simple Carburetor
Case Studies in Fluid Mechanics with Sensitivities to Governing Variables
Study Nonlinearity Characteristics of Flow Passage for Fuel Metering Valve Based on Linear Theory
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Antilock-Braking System Using Fuzzy Logic
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3