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Assignment
We are designing a camshaft for a direct acting mechanical bucket (DAMB) valvetrain - assume a single cylinder and a single valve for this analysis.
The material is nodular cast iron. At max lift on the camshaft lobe, the valve is to open 10mm. The spring rate is 400 lb/in. The surface between the lobe and the bucket can be considered lubricated steel on steel for friction purposes.
a. What diameter must the shaft of the camshaft be to have infinite fatigue life?
b. If the diameter of the cam sprocket is 125mm, what torque is required to turn it?
c. Why did we use nodular cast iron in this application?
Show that the solution for the Euler equation subject to the boundary conditions for this problem leads to the characteristic equation.
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A piston-cylinder device contains 1.101 kg of nitrogen gas at 120 kPa and 27 degrees C. The gas is now compressed slowly in a poly tropic process which PV^(1.38) = constant. The process ends when the volume is reduced by one-half. Determine the entro..
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A steam turbine is operated ith an input temp of 800C and exhaust temp of 150C. What is the maximum amount of work the turbine can do for a given heat input Q? Under what conditions is the maximum achieved?
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for each kw of power input to an ice maker at steady state determine the maximum rate that ice can be produced in kgs
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