Right... but horsepower is torque per minute. So, surely an engine with more cylinders will have more power strokes per revolution and therefore per minute. That means more horsepower can be given from a lower RPM.
Right... but horsepower is torque per minute. So, surely an engine with more cylinders will have more power strokes per revolution and therefore per minute. That means more horsepower can be given from a lower RPM.
Torque is a measure of force only. It's only angular force. Number of cylinders, although this will influence the way torque is delivered, has no bearing at all upon the measured figures.
RPM is the constant here, a 6 cylinder and 3 cylinder engine will still have the same RPM despite the fact that they use a different number of strokes to achieve this, so you don't have to factor cylinders in to the equation.