[taildragger]

Edzo4,

I don't so.

Check out SEHF here:

http://www.hirth-uavengines.de/Download/Download.htm

Read anything that says Heavy Fuel.

[edzo4]

here it is
it was popular science

its a six stroke, 4 gas powered 2 steam powered

http://www.popsci.com/popsci/technology/c1609351d9092110vgnvcm1000004eecbccdrcrd.html

Crower calculates that the Steam-o-Lene boosts the work it gets from a gallon of gas by 40 percent over conventional engines.