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Compression Stroke. Adiabatic compression of gas fuel mixture in the cylinder |
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Ignition of gas fuel mixture. Takes place rapidly at top of the compression stroke while the volume is essentially constant. |
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Expansion Stroke. Adiabatic, isentropic expansion of gases in the cylinder after fuel mixture is ignited. This the part of the cycle that does positive work. |
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Exhaust of the spent gases and the intake of a new fuel mixture into the cylinder. The volume is the same at beginning and ending of the exhaust and intake stroke. |
Java Simulation by Xing Min (Sherman) Wang.
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Compression Stroke. Adiabatic compression of gas and diesel fuel mixture in the cylinder. |
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Ignition of gas fuel mixture. Fuel is ignited by high temperature due a large compression. Burning takes places while the pressure is essentially constant. |
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Expansion Stroke. Adiabatic, isentropic expansion of gases. This is the part of the cycle that does positive work. |
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Exhaust of the spent gases and the intake of a new fuel mixture into the cylinder. The volume is the same at beginning and ending of the exhaust and intake stroke. |
Java Simulation by Xing Min (Sherman) Wang.
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Isothermal-compression compression of working gas. |
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Heat is absorbed from an energy-storage device at a constant volume. |
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Isothermal-expansion of gases. This the part of the cycle that does positive work. |
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Heat is transferred from the working gas to an energy storage device at a constant pressure. The heat stored in this part of the cycle is the same as the heat absorbed in 2 -> 3 part of the cycle. |
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Isentropic-compression of the intake air into the combustion section of the engine. |
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Constant-pressure combustion of fuel injected into combustion chamber. |
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Isentropic-expansion combustion gases through the turbine section. This the part of the cycle that does positive work. |
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Constant-pressure heat exhausting into the air. |
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