Originally Posted by
No Hoper
AndyRR Would you like to explain why?
Hard to explain without waving my hands in the air drawing imaginary diagrams, but...
...in simple terms, the net work done is the sum of the (positive) expansion work and the (negative) compression work. If you increase the compression work by increasing the compression ratio (negative torque pulse) you also increase the expansion work (positive torque pulse). The net work done is the same (more-or-less) but the difference between the two (torque pulses) is the amplitude. Hence higher CR >> higher torque amplitude.