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From Somender Singh -
Other Engines
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The Scuderi group http://www.scuderigroup.com has a patented device
that has two cylinders doing the work of one four stroke cylinder. The
theory is that by placing the pushrods and cylinders for their optimal
effort and splitting the job of each cylinder, major increases in
efficiency can be realized.
The cycle:
Cylinder one draws fuel/air mixture into the cylinder and begins
compression. The rods are located about 15 degress apart on the shaft,
so that once cylinder 1 hits TDC, a valve opens and the compressed mix
gets shunted into cylinder 2 which is not yet at TDC. Cylinder 2 then
completes the compression and spark is ignited in cylinder 2. At this
point cylinder 2 is directly over its connection to the shaft and the
resultant force is more directly applied to the shaft. At the
completion of the power stroke, cylinder 2 then pushes exhaust gasses
out of the chamber and is fed another charge from cylinder 1.
Conclusion:
This engine has reason to expect real world (there has only been a
computer simulation thus far according to their website) benefits and
to their credit, this engine needs not have any new machinery processes
for implementation.
It is still a rather serious redesign of the engine, though. There is
no way to retrofit an existing engine with this development.
Frictional losses from a parasitic cylinder 1 will have a negative
impact on overall performance as will the pressure effort of cylinder 1
mixture being injected into cylinder 2 before it again is compressed.
All this is so that the rods can be forced directly down during the
explosion rather than having to rotate with the shaft as the forces get
directed to it.
An interesting component of the computer simulation, according to their website, is the reduction of NOx some 50-80%
Wonder how this happens?
Overall, not a bad idea and yes, the grooves will be compatible with this engine as well.
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