Influence of Fuel Properties on Metering in Carburetors The University of Michigan

Format:

Conference/Event

Author/Creator:

Bolt, J. A., author.

Conference Name:

1971 Automotive Engineering Congress and Exposition (1971-01-11 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1971

Summary:

This paper considers the influence of the properties of gasolines and testing fluids on metering by carburetors. Since the fuel metering is controlled by orifices, the effects of fuel properties on orifice flow are analyzed. The results of an orifice testing program are presented, using the Reynolds number as the primary correlation parameter. The influences of fuel type, fuel temperature, and orifice geometry on the discharge coefficient are discussed, and the effect of a given fuel property change is shown.Experimental values for the variations in fluid properties with fuel type and temperature are presented for commercial gasolines, carburetor testing fluids, and pure hydrocarbons. The variation of carbon-to-hydrogen ratio among gasolines is shown to cause a change in stoichiometry, which is the equivalent of an error in metering.Experimental results which show the effect of fuel temperature on metering by a carburetor are evaluated in terms of fundamental fluid processes, and the basic factors to be considered in designing fuel channels with inherent compensation for fuel-property changes are discussed

Notes:

Vendor supplied data

Publisher Number:

710207

Access Restriction:

Restricted for use by site license