closed
Updated answer,
Firstly the four stages of an "Otto Cycle Engine" are, Induction the intake valve is opening, to let fuel and air mixture into piston chamber. Compression the intake valve and exhaust are shut to compress fuel air mixture. Powerfuel air mixture ignited, both the intake and the exhaust valves are closed. And finally Exhaust when the exhaust valve is open to release spent gasses. At idle speed approximately 800 rpm it should be appreciated timing is important.
Closed.
Both the intake and the exhaust valve are closed.
Closed
-intake: exhaust closed, intake open -compression: exhaust closed, intake closed -combustion: exhaust closed, intake closed -exhaust: exhaust open, intake closed
carpetbagger
They are closed during the power stage.
carpetbagger
carpetbagger
carpetbagger
It causes the cell to split into four haploid cells.
It causes the cell to split into four haploid cells.
Closed