Q2: An in-line, six-cylinder, 6.6-liter, four-stroke cycle SI engine with multipoint port fuel injection operates at 300

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Q2 An In Line Six Cylinder 6 6 Liter Four Stroke Cycle Si Engine With Multipoint Port Fuel Injection Operates At 300 1 (60.97 KiB) Viewed 50 times

Q2: An in-line, six-cylinder, 6.6-liter, four-stroke cycle SI engine with multipoint port fuel injection operates at 3000 RPM, with a volumetric efficiency of h v = 89%. The intake manifold runners can be approximated as round pipes with an inside diameter of 4.0 cm. Inlet temperature to the manifold is 27 C. Calculate: (a) Average velocity and mass flow rate of air to each cylinder, using inlet temperature to evaluate properties. [m/sec, kg/sec] (b)-Reynolds number in the runner to cylinder #1, which is 40 cm long (use standard interior pipe flow equations). (c) Temperature of the air entering cylinder #1 if the runner wall temperature is constant at 67 C. [C] (d) Wall temperature needed for the runner to cylinder #3, such that the cylinder air inlet temperature is the same as that in cylinder #1. Runner length for cylinder #3 is 15 cm. [C] U= me= LA