A simplified schematic diagram of a carburetor of a gasolineengine is shown in Fig
Chapter 11, Problem 11.38(choose chapter or problem)
A simplified schematic diagram of a carburetor of a gasolineengine is shown in Fig. P11.38. The throat area is 0.5 in2. Theengine draws air downward through the carburetor Venturi andmaintains a throat pressure of 14.3 psia. This low throat pressuredraws fuel from the float chamber and into the air stream. Theenergy losses in the 0.06-in. I.D. fuel line and valve are given byhL = KV22g ,with K = 6.0. The fuel specific gravity is 0.75. Assume an atmosphericpressure of 14.7 psia. Find the airfuel ratio (that is, theratio of the air mass flow rate to the fuel mass flow rate) basedon an (a) ideal (constant density and inviscid) air flow and (b) anisentropic air flow.
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