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The chronological order of strokes in a four stroke petrol engine is:

<p><strong>1] Suction stroke, working stroke, compression stroke and exhaust stroke.</strong></p> <p><strong>2] Suction stroke, compression stroke, working stroke and exhaust stroke.</strong></p> <p><strong>3] Compression stroke, working stroke, suction stroke and exhaust stroke.</strong></p> <p><strong>4] Compression stroke, suction stroke, working stroke and exhaust stroke.</strong></p>

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Question added by Alex Al Yazouri , General Manager , Al Mushref Cooperative Society
Date Posted: 2014/12/28
Deleted user
by Deleted user

 Option -2

Alex Al Yazouri
by Alex Al Yazouri , General Manager , Al Mushref Cooperative Society

2] Suction stroke, compression stroke, working stroke and exhaust stroke.

Shiva Kant Tiwari
by Shiva Kant Tiwari , Auto-Mobile Engineer , Madhvani Group

Answer Is -2

Suction,Compression,Expansion(working),Exhaust

Basudab chowdhury
by Basudab chowdhury , Service engineer , Navana 3s center (Toyota corporation)

correct ans is two. think the piston is in TDC ( Top dead center) when piston going to downward than create vacuum on piston head, that means it's Suction stroke. Than again piston coming upward that's for fuel going to compressed so it's Compressed stroke, when fuel is enough constrict, and spark plug going to spark that's way it's blow up that's for it's gonna be working stroke or power stroke. that way piston come TDC to BDC, when it's going up than it completed its exhaust stroke ;)  

جعفر هندي زين السقاف
by جعفر هندي زين السقاف , "Certified trainer by the Yemeni Engineers Syndicate." , Engineers Syndicate

Choice -2

Vinod Jetley
by Vinod Jetley , Assistant General Manager , State Bank of India

The correct answer is '2' 

Mohammed Rafi
by Mohammed Rafi , Electrical supervisor , Energy Technical Services

OPTION2 

Elke Woofter
by Elke Woofter , Project Assistant , American Technical Associates

I agree, and my choice is #2 as well

Muhammad samran
by Muhammad samran , Junior Officer/Project Coordinator , Pakistan Stell Mill

2nd  option is the right Answer.

I believe answer is choice [2] Suction stroke, compression stroke, working stroke and exhaust stroke.

Please see the following link:

http://en.wikipedia.org/wiki/Four-stroke_engine

Basit Ali
by Basit Ali , Director of Engineering , Laverda Suites & Villas / Blue Bay Resorts

Option2

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