ME367 Lab 1

# ME367 Lab 1 - Introduction Objectives Part 1 An equation...

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Introduction Objectives Part 1 An equation for piston acceleration was derived from a given piston velocity equation. S p = Piston Acceleration = -aω 2 cos(θ)-[(a 2 ω 2 )/(2l)][(2cos(2θ Piston position, velocity, and acceleration were then calculated at different angles using a given connecting rod-to-crank ratio(L/a) and crankshaft rotational speed(N). Input Parameter Value Connecting rod-to-crank ratio (L/ a) 3.5 Crankshaft rotational speed (N) 3400 RPM The calculations were done using Microsoft Excel. The calculated results were put into a graph to show a visual representation of the data at different crank angles. 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 0 50 100 150 200 250 300 350 Crank Angle (degrees) Position (m)

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-800.00 -600.00 -400.00 -200.00 0.00 200.00 400.00 600.00 800.00 0 50 100 150 200 250 300 350 Crank Angle (degrees) Velocity (m/s) -300000.00 -250000.00 -200000.00 -150000.00 -100000.00 -50000.00 0.00 50000.00 100000.00 150000.00 200000.00 0 50 100 150 200 250 300 350 Crank Angle (degrees) Acceleration (m/s^2) Next, the piston acceleration equation was entered into the program ENGINE to find and compare the calculations for position, velocity, and acceleration. The following parameters were used: Input Parameter Value Device type Engine Cycle 4-stroke Calculation speed Mid range Engine type Inline Time delay 1 Displacement of 1 cylinder 25 in3 Bore 3.2 in
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ME367 Lab 1 - Introduction Objectives Part 1 An equation...

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