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Numerical and Theoretical Fuel Flow Analysis of Small Engine Carburetor Idle Circuits
Technical Paper
2006-32-0111
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents a theoretical analysis of the fuel and air flows within the idle circuit found in simple carburetors. The idle circuit is modeled numerically using a dynamic model that considers the resistances of the flow paths as well as the inertia of the fuel. The modeling methodology is flexible, in that the organization and techniques can be applied to any configuration and geometry. The numerical model calculates the fuel flow response of carburetor idle/transition circuits to pressure variations associated with air flow through the venturi and around the throttle plate. The model is implemented for a typical small engine carburetor and the nominal results are presented for this specific design.
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Citation
Hendricks, T., Shedd, T., and Nellis, G., "Numerical and Theoretical Fuel Flow Analysis of Small Engine Carburetor Idle Circuits," SAE Technical Paper 2006-32-0111, 2006, https://doi.org/10.4271/2006-32-0111.Also In
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