Characteristics of High Pressure Jets for Direct Injection Gas Engine

Paper #:
  • 2013-01-1619

Published:
  • 2013-04-08
Citation:
Yu, J., Vuorinen, V., Kaario, O., Sarjovaara, T. et al., "Characteristics of High Pressure Jets for Direct Injection Gas Engine," SAE Int. J. Fuels Lubr. 6(1):149-156, 2013, https://doi.org/10.4271/2013-01-1619.
Pages:
8
Abstract:
The direct injection (DI) natural gas engine is considered as one of the promising technologies to achieve the continuing goals of the higher efficiency and reduced emissions for internal combustion engines. Shock wave phenomena can easily occur near the nozzle exit when high pressure gaseous fuel is injected directly into the engine cylinder. In the present study, high pressure gas issuing from a prototype gas injector was experimentally studied using planar laser-induced fluorescence (PLIF) technique. Acetone was selected as a fuel tracer. The effects of injection pressures on the flow structure and turbulent mixing were investigated based on a series of high resolution images. The jet macroscopic structures, such as jet penetration, cone angle and jet volume, are analyzed under different injection pressures. Results show that barrel shock waves can significantly influence the jet flow structure and turbulent mixing. With the increase of injection pressure, the jet cone angle and jet volume are obviously increased due to the strong expansion of barrel shock waves. This would be helpful to enhance the fuel-air mixing rate.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Article
2017-03-13
Training / Education
2018-06-04
Training / Education
2018-03-27
Training / Education
2010-03-15