Difference between 2 cycle and 4 cycle egnine?

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2001 Acura Red CL Type S.
1997 Honda Civic EX.
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every downward stroke of a 2 cycle engine makes power (and they don't generally have intake/exhaust valves in the typical automotive sense)

every other downward stroke of a 4 cycle makes power

 

In simple terms, the four events of combustion 1)intake 2)compression/ignition 3)power 4)exhaust, take place in a 2 cycle engine in 2 strokes or cycles of the piston, in a 4 cycle it takes 4 strokes or 4 cycles.
1 cycle = 1 stroke

01 STOCK SILVER CL-S

 

yeah, and one complete revolution of the crankshaft is 2 strokes for any one piston (for either type of engine)

 

2-stroke vs 4 stroke

A four stroke has:

1. Intake (pulls air in)
2. Compression (compress air)
3. Power (explosion --> push the crank)
4. Exhaust (push the exhaust out)

A two stoke has only two cycles:

1. It pulls air in and compresses in upstroke.

2. If makes power and exhausts in down stroke.


Here is a link that may help you out:

http://www.tpub.com/engine3/en3-11.htm


BTW -- Rotary engines are considered similar to 2-stroke/2-cycle engines...

Also:

Two-cycle -> one power pulse per revolution.




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Silver 2001 CL-S with NAVI

• Toyo T1S 235/45ZR17-97W* Proxies on 17x8" SSR Competition wheels (50 lbs less than stock)
• Comptech headers & sways
• Silver AEM CAI
• 12 coats of Zaino magic
• NEUSPEED Upper Strut Tie Bar ordered
• Stainless Brake lines coming (Brembos?)
• V1 ordered

 

Also, advantages of two-strokes:

(a cleaned-up excerpt)

a) A two-stroke engine has no valves; there is no oil in the engine. 2-4% oil is premixed with the gasoline so that the engine gets the necessary lubrication. The oil burns with the fuel and what's left of the consumed oil comes out through the exhaust-pipe.

b) Two-stroke engines ignites the compressed fuel-air mixture on every second stroke while four-stroke engines needs four strokes to ignite.

c) The two stroke engine can be made smaller, it´s usually lighter and it has less moving parts than a 4 stroke engine



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Silver 2001 CL-S with NAVI

• Toyo T1S 235/45ZR17-97W* Proxies on 17x8" SSR Competition wheels (50 lbs less than stock)
• Comptech headers & sways
• Silver AEM CAI
• 12 coats of Zaino magic
• NEUSPEED Upper Strut Tie Bar ordered
• Stainless Brake lines coming (Brembos?)
• V1 ordered

 

slow and way slower

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Future "bucket": 96-99 GST/GSX or 93-99 Prelude w/ bolt on turbo
Previous ride: '01 CL-S, Black, dropped 2 in....couldn't make da payments

 

2 strokes and they are dirty as hell!

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01 CL-S NightHawk Black/Ebony Bowling Ball Interior
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gto2050 (Mike) - The voice of absolutely no reason whatsoever!