Browse Publications Technical Papers 2001-01-3646
2001-09-24

Liquid Fuel Impingement on the Piston Bowl of a Direct-Injection, Spark-Ignited (DISI) Engine under Stratified Operation 2001-01-3646

The behavior of the liquid fuel impinging on the piston top of a direct-injected, spark-ignited (DISI) engine operating under stratified conditions is investigated using floodlight laser-induced fluorescence (LIF). The combustion chamber geometry offers wall-guided stratification using a high-pressure injector impinging on an inclined piston bowl. The LIF signal is collected through the bottom of the quartz piston, allowing observation of the footprint of the spray during and after spray development. Nitrogen gas is used to replace air in order to minimize oxygen quenching and increase the signal. The results show that at typical piston top temperatures expected in warmed-up operation (150-180 °C), a liquid film and ring around the area where the fuel jet impinges is present through the time of spark (20° before top center). The presence of the fuel film is not very sensitive to the surface temperature.

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.

Due to current capacity constraints, printed versions of our publications - including standards, technical papers, EDGE Reports, scholarly journal articles, books, and paint chips - may experience shipping delays of up to four to six weeks. We apologize for any inconvenience.
We also recommend:
TECHNICAL PAPER

Fuel Distribution and Combustion Characteristics in a Direct-Injection, Spark-Ignited (DISI) Engine Under Stratified Operation

2001-01-3645

View Details

TECHNICAL PAPER

The Effect of In-Cylinder Wall Wetting Location on the HC Emissions from SI Engines

1999-01-0502

View Details

TECHNICAL PAPER

Solid-State 1H NMR Spin-Lattice Relaxation in Combustion Chamber Deposits from a Gasoline Direct Injection Engine

2004-01-0042

View Details

X