(a) Chevrolet Silverado 6.2-liter, V8, four-stroke cycle SI engine is designed to have a maximum speed of 6500 RPM. At this speed, volumetric efficiency is 88%. The engine is equipped with a four-barrel carburetor, each barrel having a discharge coefficient of CD, = 0.95. The fuel used is gasoline at AF = 15:1 with a density of 750 kg/m?. Determine: (i) Minimum throat diameter needed in each carburetor venturi. (ii) Fuel capillary tube diameter needed for each venturi throat.

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6. A four-stroke, 6-cylinder, 3.6 Itr SI engine, is designed to have a maximum speed of 6000 r.p.m. At this speed, the volumetric efficiency of the engine is 0.92, fuel density is 700 kg/m C 15. Calculate: (1) %3! 0.85, C 0.6, Apg = 0.07 bar, at sea level T, = 27°C, p. = 1.03 bar, and AE Throat diameter of the carburetor. (2) Fuel orifice area. (3) AF at altitude of 4000 m

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