Quote:
The skirts act as a "guillotine" valve.
I have played around with a cam/crank design myself (back in the 1960's). Gave up. Then the 2 parallel rods, opposed piston, Scotch crank w/slider block. Gave up. Ford came out with a cam/crank truck engine design. Never showed up in production.
The I.C. engine @30% efficiency leaves a lot of room for improvement, have at it.
Dick Z
thanks richard. revetec's design manages a dramatic improvement: they got around 0.2L/kW/h and that was with the independent testing station refusing to allow it to run at the leaner mixtures and higher compression ratios. so it can be done.