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How calculate the engine work from pressure crank-angle diagram?
Wiki User
∙ 13y ago
Well Work is the integral of P*dV and since the crank angle plot doesn't directly show volume you need to calculate instaneous volume of the cylinder as a function of crank angle. If you know the bore and stroke you can find the volume of the cylinder and you can relate this to the crank angle. Once you have these values you can replace the crank angle with volume and have a P-V plot or pressure on the y-axis and volume on the x-axis. Then you can integrate the area under the curve and find the work from the engine.
However, all this is done for you if you can find the P-V diagram for your engine or engine cycle (Sterling, Atkinson, Otto, Diesel, etc.) and integrate this for the work.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agofor a pressure crank angle diagram you already know that 0 to theeta is compression or expansion , correspondingly you can plot a pv diagram & therefore solve it by using work done = p.v
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