American AI is usually American Airlines, and usually appears because of a baggage fee paid at the airport, or a purchase made during a flight. posted 09/11/2012 Helpful (4)
Electric motors are in general, a lot more efficient that internal combustion engines. An average combustion engine has about 18â20%. A formula one engine, has about 50% of an efficiency.
An example of this type of engine is the Waertsilae-WÃ¤rtsilÃ¤ SULZER-Rta96 c turbocharged-2 Stroke, diesel used in large container. Ships it is the most efficient and powerful internal combustion engine in the world with a thermal efficiency over %. 50