Two-stroke cycle engine 1

[lucianfg]

Why a two-stroke cycle engine must have an intake pressure boost??

 

[TugboatEng]

Popped valve 2-strokes with asymmetrical timing will run in reverse, just not very efficiently. large marine 2-strokes do run in reverse with asymmetrical timing but spend so little time operating in reverse the efficiency loss is written off.

 

[Pancholin]

The 2,4 8- 71 diesels need blower intake. They are basically two stroke with cylinder ports for exhaust and poppet valve for intake in the head. As the piston reaches bottom of stroke it uncovers the exhaust port and shortly after the intake poppet valve opens pushing the exhaust gases out then closes for the compression and power stroke.

 

[Lou Scannon]

How's that again?!!

"Schiefgehen wird, was schiefgehen kann" - das Murphygesetz

 

[BrianPetersen]

Backwards, is what it is. The traditional Detroit Diesel used the blower to supply INTAKE ports in the cylinder wall, and the valves in the head were exhaust valves.

 

[Pancholin]

Ooops!!! I stand corrected.