Clop wrote: ↑
Fri Oct 09, 2020 9:13 pm
Surely but open and close the ports at the same time. Is like a huge overlap! The question became more difficult if we think that is too rarely find these turbo 2 stroke setup around.
Clop, you appear to misapprehend the basics of piston-port* 2T gas-flow timing functions.
(Try & conceptualize the idea of a hi-performance resonance-flow 2T piston acting
as the combustion-chamber/timing valve of a pulse-jet - with the reciprocation-to-rotary
power-shaft transmission through to final drive - as analog to a turbo-shaft geared gas turbine).
With a lambda-state air-fuel mixture a 2T will function in the low pressure air found
3km up a mountain, or in a sealed engine test-cell pressurised to +1 bar over sea-level**,
now guess which operating condition - will show more power on the dyno...
*With, or without added inlet/exhaust valve timing control devices.
**Equivalent to what a fair level of turbo-boost will pump.
We are standing on the shoulders of Giants. So wash your feet.