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brayton cycle

By Admin on May 2016

The Brayton cycle is a thermodynamic cycle that describes the workings of a constant pressure heat engine. The original Brayton engines used piston-compressor and expander systems,...

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Otto cycle

By Admin on May 2016

An Otto cycle is an idealized thermodynamic cycle that describes the functioning of a typical spark ignition piston engine. It is the thermodynamic cycle most common...

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Compression ratio

By Admin on May 2016

The compression ratio of an internal-combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion c...

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Diesel engine

By Admin on May 2016

The diesel engine (also known as a compression-ignition or CI engine) is an internal combustion engine in whichignition of the fuel that has been injected ...

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Thermodynamic cycle

By Admin on May 2016

A thermodynamic cycle consists of a linked sequence of thermodynamic processes that involve transfer of heat and work into and out of the system, while varying pressure, temperatur...

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Diesel cycle

By Admin on May 2016

The Diesel cycle is a combustion process of a reciprocating internal combustion engine. In it, fuel is ignited by heat generated during the compression of air in the combustio...

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Adiabatic process

By Admin on May 2016

An adiabatic process is one that occurs without transfer of heat or matter between a thermodynamic system and its surroundings. In an adiabatic process, energy is transferred only as work.&n...

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Martensite

By Admin on May 2016

Martensite is formed in steels when the cooling rate from austenite is sufficiently fast. It is a very hard constituent, due to the carbon which is trapped in solid solution. Unlike decomposition to f...

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Bainite

By Admin on May 2016

Bainite is formed at cooling rates slower than that for martensite formation and faster than that for ferrite and pearlite formation. There are two forms of bainite, known as upper and lower bainite.U...

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Pearlite

By Admin on May 2016

Pearlite is usually formed during the slow cooling of iron alloys, and can begin at a temperature of 1150°C to 723°C, depending on the composition of the alloy. It is usually a lamellar (alter...

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