However, you can seriously supercharge a conventional two stroke if you raise the exhaust back pressure along with the intake pressure. Turbochargers do this, but Ricardo tested his sleeve valve two strokes by simply restricting the exhaust. During one test he got a BMEP of 321 psi (22 bar) with 36 psi (2 1/2 bar) intake pressure and 12 (.8 bar) psi exhaust pressure. You could run a really effective catalytic muffler with that back pressure. The mechanical supercharger would take some power to run, so a turbo is probably a better and proven solution.We can only effectively supercharge a cylinder via the last opening that closes before compression begins. In a four-stroke that is the inlet port, in a conventional two-stroke it is the exhaust port.
You knew all that, though.
Lohring Miller
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