The connecting rod AB of an intemal-combustion engine weighs 1.2 lb with mass ce

Question

The connecting rod AB of an intemal-combustion engine weighs 1.2 lb with mass center at G and has a radius of gyration about G of 1.12 in. The piston and the piston pin A together weigh 1.80 lb. The engine is running at a constant speed of 3000 rpm. The engine produces a brake-horsepower of 50 hp. Neglect the weights of the components. Having the angular position 0 of the crank shaft as a control parameter. Perform a velocity analysis for the engine and Determine the velocity and acceleration of the piston as a function of 0. Determine the angular velocity of the connecting AB as a function of 0. Plot your findings in 1-a and 1-b over one complete revolution. Perform an acceleration analysis and force analysis for the engine and Determine the angular acceleration of the connecting rod AB. Determine the acceleration of the piston. Determine the gas force exerted on top of the piston head. The force extorted at the pin A. Plot your findings in 2-a, 2-b. and 2-c over one complete revolution. Draw conclusions that might help design the piston pin A.

Explanation / Answer

ANs: 347 lb

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