<A HREF="http://www.alvar-engine.se/";>The ALVAR engine</A> <-(link) I took
a look at this and on first sight knew this would never work. There are too
many inconsistencies to make any sense of how the motor will work. The
author claims that the compression is variable and can be adjusted like a 2
stroke diesel model airplane motor (I don't know of any 4stroke diesel model
airplane motors) but not according to the animation. I don't think the
person who came up with the design had any clue as to any intricacies of how
an internal combustion motor works. There are way too many problems to even
make the design feasible. Just look at the small piston P=F/A tells you that
the smaller piston will see a higher force than the big piston requiring
stronger bearing surfaces. Cooling will be another big problem as will
getting air and fuel efficiently in and out of the motor. Of course what do
I know I am just an M.E. in his senior year that knows more than I care to
admit about the works of an internal combustion engine.
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