Browse Publications Technical Papers 2007-01-1851
2007-07-23

An injector specific analytic-phenomenological spray propagation model for the application-oriented simulation of direct injection SI engines 2007-01-1851

Spray-guided combustion processes for gasoline direct injection offer a great fuel saving potential but also put high demands on mixture formation quality. Systematic optimization by means of experiments or three-dimensional computational fluid dynamics (3-D CFD) requires tremendous effort. As an alternative, this paper presents an application-oriented, zero-dimensional (0-D) simulation model. A comparison with laser-induced exciplex fluorescence (LIEF) tomography measurements revealed good agreement between simulation and experiment. The proposed spray propagation model precisely captures the injector-specific spray penetration, volume propagation, and air entrainment rate of an annular-orifice injector and a multihole injector. The vaporization rate and the mean air/fuel-ratio as the key measure of mixture formation quality are correctly reproduced. The presented model is employed to optimize the injector mass flow rate with respect to a minimum mixture formation time.

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:
TECHNICAL PAPER

Knock Resistance in a Small Turbocharged Spark-Ignition Engine

2006-01-2995

View Details

TECHNICAL PAPER

1-D Modeling of Transient Engine Operations Using Data Generated by a CFD Code

2008-01-0357

View Details

TECHNICAL PAPER

DISI Spray Modeling Using Local Mesh Refinement

2008-01-0967

View Details

X