Browse Publications Technical Papers 2004-32-0053
2004-09-27

Numerical and Experimental Study of Fuel and Air Flow in Carburetors for Small Engines 2004-32-0053

This work presents a complete model of the carburetor for small engines. It extends the previously published models by incorporating a detailed review of two-phase flow pressure drop, the effect of the fuel well on the control of airbleed flow, and unsteady flow. The homogenous two-phase flow model, which is commonly used in carburetor modeling, was compared with an empirical correlation derived from experiments in small pipes and found to be in poor agreement. In order to assess unsteady flow conditions, the model was extended by solving instantaneous one-dimensional Navier-Stokes equations in single-phase pipes. This strategy proved successful in explaining the mixture enrichment seen under pulsating flow conditions. The model was also used to derive a sensitivity analysis of geometries and physical properties of air and fuel.

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

CFD Analysis of Flow Field and Pressure Losses in Carburetor Venturi

2006-32-0113

View Details

TECHNICAL PAPER

Analysis and Digital Simulation of Carburetor Metering

700082

View Details

TECHNICAL PAPER

An Approach to Altitude Compensation of the Carburetor

760286

View Details

X