Continued From Assignment 3 Derive The Equations Of Motion Of The Slider Crank Mechanism As The Engine Starts The Ang 1 (112.32 KiB) Viewed 43 times
Continued from Assignment 3. Derive the equations of motion of the slider-crank mechanism. As the engine starts, the angular velocity of the crank oo is 200 rpm CCW and 02 is 0 degree. Consider the gas force (black line) shown in Figure 2. The driving torque T is 0.0001.w² N·m, 1) Simulate the dynamics of the engine during t = 0 to 10 s. 2) In the simulation, find the required time to speed up from 200 to 3600 rpm. 3) According to the result in Assignment 3 to design a flywheel for the crank to achieve k = 0.05. Repeat 1) and 2) to find the influence of the flywheel. Y Crank pin Wrist pin Connecting rod Gas pressure 3 B - X 1 Main pin Piston Cylinder (a) (b) FIGURE 13-3 Fourbar slider-crank mechanism (a) for single-cylinder internal combustion engine (b) Mahle Inc., Morristown, NJ Figure 1. Engine A theta 2 Crank
15 KN 13 KN 0 Gas Force KN 650 710 0 180 360 540 Gas-Force vs Crank Angle Figure 2. Gas Force 10 160 13 KN 2 kN 720
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