From the article:
Eco Motors is the name of a new company that has come up with a radically new type of engine. It has two opposing pistons in two contiguous cylinders, connected to a common crankshaft in the middle of the engine. An electric supercharger provides boost on demand. It's a two-stroke engine with no valves, yet still achieves 90% scavenging efficiency with less oil consumption than a four-stroke engine. In other words, it's a two-stroke engine that can meet the strictest emissions standards. It can be made as a spark-ignited or compression-ignition engine, and the diesel version can meet emission standards without using urea.