CFD Characterization of Fuel Flow in Small Metering Orifices Used In Carburetors University of Wisconsin - Madison

Format:

Conference/Event

Author/Creator:

Arias, Diego A., author.

Conference Name:

Small Engine Technology Conference & Exposition (2006-11-13 : San Antonio, Texas, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2006

Summary:

Although each carburetor design is slightly different, it is possible to define some basic elements that can be used as building blocks to describe many carburetor designs. All carburetors designs use small metering orifices to constrain fuel and air flow through different circuits. This paper presents the CFD analysis of fuel flow across small metering orifices typically found in small engine carburetors. The analysis was divided into three parts: first, CFD simulations of liquid flow in square-edged orifices were performed. These simulations indicated the appropriate turbulent model and numerical parameters to be used in the study of orifices with more complex geometries. Second, inlet and outlet chamfers were added to the square-edged orifices, which allowed for understanding their effect on the characteristics of the flow.Finally, the simulations were performed on geometries that represented metering orifices found in real carburetors. The verification of the CFD predictions with experimental results showed a good agreement. The information obtained from the CFD simulations were used to develop correlations for the real orifices. These correlations are simple enough so they can be incorporated into a flow network model of carburetor fuel flow

Notes:

Vendor supplied data

Publisher Number:

2006-32-0110

Access Restriction:

Restricted for use by site license