I've been reading a little bit about 2 stroke motors in a book I checked out from the Library. Its basically a text book, and its pretty dry...
It brought up the fact that 2 strokes are dirty, and the pollution comes from 2 sources, unburned gas, and burned oil.
The book said that in an effort to increase cleanliness, many 2 strokes use oil injection. Oil injection systems burn considerably less oil than premix, and in some cases can approach 200:1 gas to oil. It also mentioned that 200:1 is very close to the amount of oil that a 4 stroke burns.
The other source of pollution is the unburned gas that escapes out the exhaust port, before it closes. My idea is to use a reed valve in the exhaust.
A stiff reed valve over the exhaust port would not allow any air gas mix to escape while the intake is open, because there is very little pressure. However, after combustion there is a lot of pressure, and the reed valve would open and allow the exhaust to flow out.
If this worked it would increase gas mileage, increase performance, and decrease pollution.
I doubt that I'm smarter than every engineer at honda suzuki, yamaha, and kawasaki combined, so there must be some reason this wouldn't work. I dont know... what do you think?