Browse Publications Technical Papers 2000-01-1794
2000-06-19

Experimental Investigation of an Optical Direct Injection S.I. Engine Using Fuel-Air Ratio Laser Induced Fluorescence 2000-01-1794

To provide fuel/air ratio quantitative measurements in an S.I engines, a transparent cylinder engine is investigated with the Fuel-Air Ratio Laser Induced Fluorescence (FARLIF) technique. In a homogeneous mixture, the two dimensional distribution for the fuel/air ratio is calibrated and measured during the compression stroke for different equivalence ratios. After spark ignition, the combustion zone and the flame front are visualized by laser sheet LIF.
The direct-injection stratified-charge, new concept for gasoline engines is investigated with FARLIF. In the direct injection gasoline engine where the fuel is directly injected into a cylinder and the flow is highly turbulent, two injection timings are used: -early injection (i.e. during the intake stroke) to promote a homogeneous distribution; -late injection during the compression stroke, to generate a ultra-lean stratified charge. While the early fuel injection shows a homogeneous vapor phase during the compression stroke, the late injection shows a stratified mode with the presence of both liquid and vapor phases.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
JOURNAL ARTICLE

Non-Intrusive Investigation in a Small GDI Optical Engine Fuelled with Gasoline and Ethanol

2011-01-0140

View Details

TECHNICAL PAPER

Optical Investigation of Mixture Formation in a Small Bore DISI Engine by Laser Induced Exciplex Fluorescence (LIEF)

2019-24-0133

View Details

TECHNICAL PAPER

Experimental and Numerical Investigations on HCCI- Combustion

2005-24-038

View Details

X