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- 1Four Stroke Engines Name the strokes1- Intake stroke
2- Compression stroke
3- Expansion stroke
4- Exhaust stroke - 2Two Stroke Engines First PhaseStarts with the combustion and expansion. The piston uncovered the exhaust port before BDC. Later, the inlet port is uncovered before BDC too. The intake air scavenges (eliminates) the burned gases.
- 3Two Stroke Engines Second PhaseThe piston starts to rise up closing then exhaust port.
Then starts completely the compression - 4In a two stroke engine, when does the inlet port should be opened?when intake pressure
is higher than pressure in combustion chamber. - 5In a two stroke engine, by which process is the Intake and exhaust strokes substitutedscavenge process
proceso de barrido - 6advantages of 2 stroke engines over 4 strokesHigher power
Simpler and cheaper
Higher temperatures
Higher wear. - 7disadvantages of 2 stroke engines over 4 strokes-Lower efficiency due to scavenge process
- (exhaust port is closed later than intake port). Increase emissions.
- exhaust port is covered later than intake. there is a problem if the pressure in the combustion chamber is higher than in the exhaust.
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- 17/05/19 Propulsion Aeroespacial II FlashCards sobre Sem título, criado por Ana Castilla em 11-04-2021.
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- Ana Castilla
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