Effect of Jet-Jet Interactions on the Liquid Fuel Penetration in an Optical Heavy-Duty DI Diesel Engine Lund University

Format:

Conference/Event

Author/Creator:

Lequien, Lequien, author.

Contributor:

Andersson, Oivind

Berrocal, Edouard

Gallo, Yann

Johansson, Bengt

Themudo e Mello, Augusto

Conference Name:

SAE 2013 World Congress & Exhibition (2013-04-16 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

The liquid phase penetration of diesel sprays under reacting conditions is measured in an optical heavy-duty Direct Injection (DI) diesel engine. Hot gas reservoirs along the diffusion flames have previously been shown to affect the liftoff length on multi hole nozzles. The aim of this study is to see if they also affect the liquid length. The inter-jet spacing is varied together with the Top Dead Center density and the inlet temperature. To avoid unwanted interferences from the natural flame luminosity the illumination wavelength is blue shifted from the black body radiation spectrum and set to 448 nm. Filtered Mie scattered light from the fuel droplets is recorded with a high speed camera. The liquid fuel penetration is evaluated from the start of injection to the quasi steady phase of the jets. Knowledge of jet-jet interaction effects is of interest for transferring fundamental understanding from combustion vessels to practical engine applications. It is found that the hot gas reservoirs do not significantly affect the liquid length. A close inter-jet spacing causes a more pronounced evaporative cooling which seems to explain the longer liquid length observed on the confined jets

Notes:

Vendor supplied data

Publisher Number:

2013-01-1615

Access Restriction:

Restricted for use by site license