Browse Publications Technical Papers 2001-01-1855
2001-12-01

INTEGRATED NUMERICAL-EXPERIMENTAL METHOD IN HIGH SPEED 2T GASOLINE ENGINE DESIGN REFINEMENT 2001-01-1855

A complete two stroke engine predictive tool has been developed in order to evaluate how geometric parameters affect both performances and exhaust emissions.
The method is based on a two-step procedure. In the former one, the coupling between 0D and 1D simulation schemes, used to model engine volumes and ducts respectively, provides the boundary conditions necessary for the latter procedure, in which a 3D approach is applied to a variable geometry in order to obtain detailed information of cylinder flow and concentration fields during the scavenging period.
The first step retains the advantages of being a simple and rapid facility as it doesn't demand carefulness in the preliminary activity devoted to define the calculation geometry; moreover it is able to compute global parameters (torque, fuel and air consumption). For these reasons it can be considered a suitable tool to be extensively adopted together with the experimental process.
The second step is devoted to the comprehension of the phenomena and to the evaluation of the different pathways, which the subsequent optimisation process should be directed to.
The overall procedure has been tested on a high speed small two stroke engine by comparing the numerical results with experimental data. Then, the validated method has been used to evaluate the effect of transfer port geometric variations on performances and loss of fresh mixture.

SAE MOBILUS

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

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% 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

Reduction of Pollutant Emissions of the IAPAC Two-Stroke Engine with Compressed Air Assisted Fuel Injection

900801

View Details

TECHNICAL PAPER

Two-Stroke S.I. Engine Competitive to Four-Stroke Engine in Terms of the Exhaust Emission

941681

View Details

TECHNICAL PAPER

Emission and Performance Evaluation of a 25 cc Stratified Scavenging Two-Stroke Engine

2003-32-0047

View Details

X