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Gasoline engine

From Academic Kids

Gasoline (or petrol) engine or Otto engine from Nikolaus Otto is a type of internal combustion engine which is often used for automobiles, aircraft, small mobile vehicles such as lawnmowers or motorcycles, and outboard motors for boats.

The most common engine of this type is a four-stroke cycle internal combustion engine that burns gasoline (in American English) or petrol (British English). Burning is initiated by an ignition system that fires a high voltage spark through a sparkplug, in contrast to the Diesel engine which ignites the fuel through high compression. The two-stroke cycle type of engine is often used for smaller, lighter and cheaper applications but it is less fuel efficient and, partly as a result, produces more hydrocarbon exhaust emissions.

Wankel engines can also use gasoline as their fuel.

One component in older engines is the carburator, which mixes the gasoline with air. In later engines the carburetor is replaced with fuel injection.

With minor modifications, the gasoline engine can be made to run on other fuels. Use of natural gas, for instance, is easy, since it is already a gas and mixes readily with air; many automobiles have been modified to run on natural gas, or to be able to switch back and forth from natural gas to gasoline. Alcohol is another fuel often used, although the fuel delivery system has to be modified to deliver a greater volume of fuel. Applications such as drag racing where peak power output is more important than engine longetivity add nitrogen-containing fuels like nitromethane for this purpose.de:Ottomotor id:Mesin bensin nl:Ottomotor ja:ガソリンエンジン vi:Động cơ xăng zh:点燃式发动机

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