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.
Even though diesel engines have a theoretical fuel efficiency of 75%, in practice it is lower. Engines in large diesel trucks, buses, and newer diesel cars can achieve peak efficiencies around 45%, and could reach 55% efficiency in the near future. 1898: Diesel licensed his engine to Branobel, a Russian oil company interested in an engine that could consume non-distilled oil. 2  Branobel's engineers spent four years designing a ship-mounted engine.