Pinnacle Engines Aims to Slash Fuel Consumption by 25 to 50 Percent

Pinnacle EnginesJune 29, 2011, greentechmedia: An engine with a WWII heritage could start popping up in motorcycles and scooters in Asia in 2013.

SAN CARLOS, CALIF. — Most internal combustion engines operate like trumpets, with punctuating valves controlling the flow of air, fuel and exhaust in and out of the cylinder.

Pinnacle Engines has come up with an engine that operates more like a trombone.

The company, founded in 2007, has developed a somewhat novel opposed piston engine that controls the flow of gases with a sliding cylinder sleeve — typically an inert component that separates the cylinder from the rest of the engine — instead of traditional intake valves.

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