Carburetor Exit Flow Characteristics

Paper #:
  • 961730

Published:
  • 1996-08-01
Citation:
Itano, E., Shakal, A., Martin, J., Shears, D. et al., "Carburetor Exit Flow Characteristics," SAE Technical Paper 961730, 1996, https://doi.org/10.4271/961730.
Pages:
12
Abstract:
Three different carburetor types have been tested to observe differences in the characteristics of the fuel/air mixtures produced. To characterize the fuel/air mixtures, two diagnostics have been applied: 1) High speed movies and subsequent analysis of the exit flow, and 2) measurement of the A/F ratio found in different positions within the intake manifold.The three different carburetor types that have been studied include a fixed-venturi, fixed-jet butterfly carburetor, a slide-valve carburetor, and a constant-velocity carburetor. Each carburetor type produced a unique set of exit flow characteristics, with differences in the optical density of fuel exiting the carburetor, and differences in the apparent amount of fuel on the intake manifold wall, entrained in the air flow, and in vapor phase.
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