Wet flow 2

Wet flow test

Category:

Autos & Vehicles

Tags:

• cylinder
• head

[michaelovitch]

@RunNoobRunProduction

gear head porn

[RunNoobRunProduction]

uhm what the fuck did i just watch?

[Aussieheads1]

@460ciford good on ya buddy,you do know what you're talkin about,internal combustion engines ain't rocket science,but common sense is needed..



[TheRoastedPeanut]

@flyboy3633 'introducing a liquid in the airstream only screws up the airflow measurements.' don't you think the effects of liquid in the air might better reflect the fluid mechanics of a carburated engine? Just a though, I'm not bashing you.

[circutracer150]

PURPLE!!!!!!!!!!!!!!!!!!

[riflemanjim]

Shrouding refers to the proximity of a valve to the combustion chamber or cylinder bore the easiest wet flow is to get spray dykem on a regular flow bench and squirt it in the port and check the helix down the bore and where the dykem collects at different vavle lfts and sometime pressures.

[460ciford]

Ya, but what about the scavenging effect off the exaust. During the exaust stroke the intake valve open's, while the exaust valve is open (valve overlap) and the exaust draws on the intake side pulling in air and fuel which does alot off work for the piston. so when the exaust valve finally is closed, the fuel and air is allready filling up the cylinder with very little work from th piston. Like when you siphen gas, just get the fuel flowing and it does the rest of the work itself.

[flyboy3633]

I think a better wet bench would pull the vacuum from the bottom of the cylinder. It would have a plexiglass cylinder and the exhaust valve would be closed. That way you could view the actual flow of the mixture down into the cylinder from any angle around the sides of the intake valve. That's what you really want to see right ? If flow always went straight from the intake to the exhaust there would be no such thing as a "shrouded valve" right ?

[flyboy3633]

I don't think wet benches really duplicate what's going on enough to be useful.

On the bench the flow is straight from the intake to the exhaust. In a running engine the descending piston creates a monsterous vacuum that yanks the flow past the intake and down the chamber. That is so different than this. Plus the strong vacuum can actually shred or even cavitate the air/fuel mixture.

Introducing a liquid in the airstream only screws up the airflow measurements.

[jasaircraft]

Is the green stuff supposed to be fuel flowing from the intake valve to the exhaust valve? or is it air flowing? is it showing both valves been open at the same time just flowing or is it so fast that we cant see the valves moving?