Eco Trees

Being a small country, Denmark with only 5.6 million inhabitants has still more than 160000 of mopeds. All these mopeds have a common thing: they all run on two-stroke engines. Jesper Rasmussen and Michael Madsen are two students,fervently by mopeds, found out one day how much polluting these mopeds even on two times. As can be seen in the image above, white balls are a part of fuel injected into the cylinder that escape outside. So these hydrocarbons are released into the atmosphere and can cause health problems.

Rasmussen and Madsen have decided to design a system that would make the engine more efficient and would eliminate these pollution problems. They have created a unique design in their exhaust system that pushes the overflowing hydrocarbons, along with a little of the exhaust, back into the cylinder by way of a shockwave traveling at 500m / s. This allows fuel to be burned completely, and has resulted in a fuel efficiency improvement of 17.7%. Hydrocarbon emissions have been reduced by 36.7% and carbon monoxide has been decreased by 10%.

This system is more efficient in countries with warm climate such as areas like California, and many countries from Asia. Cargo vessels which have the most polluting engines could benefit from this technology.
I'm very happy because these students have also discovered an ecological system, save also the planet. They deserve all the world cheers.