Free piston engine modification

Stanley514

I think that we may try to simplify free piston engine and it may look just like hollow cylinder
made of very heat resistant material in which big cylindrical permanent magnet is moving back and forth horizontaly.The most heat resistant magnets could withstand temperatures up to 800°C (curie point).Using big magnet allows to implement some kind of magnet bearings and avoid using lubricating oil.I think such construction could have very high efficiency because any gases which will escape to other part of camera will be ready to give up power again.So this is self- turbocharged and self-compressed.Only problem that I see is a cooling system.Probably it will require some sofisticated holes through which coolant will be squirted.