'Clean Two-Stroke Engines - Boyesen Reinvents the Two-Stroke'

Snowmobiles and other small recreational vehicles have traditionally been mostly powered by two-stroke motors. But recently, environmental concerns have pushed manufacturers to develop four stroke alternatives.

Now Eyvind Boyesen has come up with a simple mechanical solution that could breath new life into the 2 strokes.

The Boyesen design basically traps the fuel/air charge in the cylinder without the need for a sound wave to push it back in. It makes use of an exhaust valve linked to the crankshaft to time the opening and closing of the exhaust valve..

For details see link below:
http://www.maxsled.com/absolutenm/templates/articles_layout.aspx?articleid=1059&zoneid=17

Could this technology succeed in solving the two-stroke dilemma?

/FFj