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.
There are only a few 3 cylinder car engines, like in an old GEO. ALso the SMART CAR is one I think. Most small efficient engines are FOUR cylinders. You can tell by counting the plug wires. Each cylinder is a compression chamber fired by a spark plug. THere are OTHER sizes of engines as well. There are 5,6,8,10,12 cylinder car engines. The 3 cylinder shoudll be better with gas but NOT as powerful or fun to drive.