I don’t think an iris like that would last very long with the immense pressures in the cylinders. It makes way more sense to electronically control the valves t

I don’t think an iris like that would last very long with the immense pressures in the cylinders. It makes way more sense to electronically control the valves themselves, like Koenigsegg is doing with their Freevalve tech, so you get the mechanical seal of the valve with the control of electronics.