I need to find an Mathematic equation of Crankshaft Efficiency. The question is related to engine performance. The research I have done indicated that crankshaft has a poor conversion rate to create torque force. Please refer to the math equation I have developed.
Even if the piston force is a constant force, the torque force will not be a constant output. I need to develop the mathematic equation on how much energy is used by the crankshaft.