Could it be possible to change the basic design of the two stroke engine to solve the inefficiency and emission problems that have plagued the current design since its conception by Joseph Day in 1892. A design that hasn't changed dramatically since the introduction of the loop scavenged system by the German inventor Schnuerle in the mid 1920's. Patent approval has recently been granted on a new design that seems to have solved most, if not all, of these problems.
Here is a simple explanation of how the new design works.
The crankcases are no longer used as the pumping device.
Which allows the bottom end of the engine to be lubricated as a four stroke, removing the oil from the petrol and solving some of the emission issues.
This is how the valve works during the exhaust and scavenging phase of the cycle.It shows the fuel being introduced into the combustion chamber after the piston closes the exhaust therefore reducing the loss to atmosphere of un burnt fuel, again lowering the emissions.
Even with it's inefficiency's we know a two stroke power plant produces twice the power of a four stroke, costs a fraction of the price, is much easier to manufacture, and is simplicity itself to service and maintain. There's nothing new about how this new design works, it's the same processes, air and fuel in and exhaust out, just put together in a different way.This new design can, by using existing technology and materials, reduce emissions and improve inefficiency making the two stroke power plant still a viable power source for the future.
To see the full story, and get a better explanation, follow this link
