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The Otto Cycle for a 4 stroke gasoline engine.

Published byJoshua Gordon Spencer Modified over 7 years ago

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Presentation on theme: "The Otto Cycle for a 4 stroke gasoline engine."— Presentation transcript:

1 The Otto Cycle for a 4 stroke gasoline engine.
Ignition of fuel causes rapid increase in temp and pressure at constant volume. Fall of piston pulls in air/gas mixture Return of piston adiabatically compresses air/gas mixture. V P intake P intake P intake

2 P P P |QH| |QC| Wnet = |QH| - |QC|
Exhaust valve opens when piston reaches bottom and this drops the pressure to atmospheric. Momentum of rising piston expels gas out of exhaust valve. Power stroke: Adiabatically expanding gas does work on piston. P intake P intake P intake |QH| |QC| exhaust Wnet = |QH| - |QC|

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