Engineering
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Fuel efficiency, in its basic sense, is the same as thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or work.

Variations[]

Overall fuel efficiency may vary per device, which in turn may vary per application. Non-transportation applications, such as industry, benefit from increased fuel efficiency, especially fossil fuel power plants or industries dealing with combustion, such as ammonia production during the Haber process.

Transportation[]

In the context of transportation, "fuel efficiency" more commonly refers to the energy efficiency of a particular vehicle model,

Hybrid vehicle[]

Hybrid vehicle designs use smaller combustion engines as electric generators to produce greater range per unit fuel than directly powering the wheels with an engine would,

(Please wait for completion)

--Dore chakravarty 21:09, 21 April 2009 (UTC)

(Please wait for completion)

Dore chakravarty 23:56, 1 May 2009 (UTC)

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