Transient Flow Simulation of 1 cycle at 9000 RPM. Colorado School of Mines
Пікірлер: 20
@nickolastwombly82178 жыл бұрын
Yes. The pressure at the port opening is lower than the TB opening due to the piston traveling down the cylinder bore (i.e., it is creating a vacuum).
@Oblithian4 жыл бұрын
I don't like that plenum design for Cyl 1... Which is probably why many have a steeper inlet angle and a bit more protrusion toward the throttle body. I like the simulation though!
@dantheman1998 Жыл бұрын
What program you using?
@christophercarson31433 жыл бұрын
What about one with the intake Central to the 4 cylinders
@georgesantiago60054 жыл бұрын
Good air reservoir.
@MrUmpleby Жыл бұрын
Would a velocity stack on the inlet to the plenum speed the air flow into the plenum as well as the stacks already fitted to the individual inlets ?
@hiteshnarang89453 жыл бұрын
How did you fetch the values for transient flow analysis like how did you get the value of pressure at the end of runner
@GuMMi3B34R10 жыл бұрын
hi brother. i would like to ask you something regarding the pressure inside the intake manifold. is the pressure at the throttle body higher than the pressure at the intake runner during the valve opening?
@sepg50843 жыл бұрын
Pressure waves tend to travel, so if it is the pistons that sucks the air through the system then at valve opening the negative pressure wave would start there. Or you could check the video at X0.25 speed to see the behavior of the pressure.
@carozomagno3 жыл бұрын
The 4 cilinder gets more air to other 3
@W.Khairi3 жыл бұрын
Cool
@abhishekchoubey87507 жыл бұрын
how do I make the flow vary from runner to runner ? in my case the flow enters from intake and is divided into 4 equal streams in each runner. How to do this firing order sequence like you did ?
@zissabek7 жыл бұрын
make a transient simulation as if there is only one passage through one runner (rest of them shut); take the engine stroke sequence as a guide on when to open the runner. also, it looks like you are blowing air into the intake, however it has to be at atm pressure, no forcing of air. simulate each runner as it is sucking air (below atmospheric pressure, like a vacuum)
@abhishekchoubey87507 жыл бұрын
can you direct me to any video tutorial for doing this ? link or something.... I am using ansys workbench 16.2
@zissabek7 жыл бұрын
kzbin.info/www/bejne/jmTIlKRugrOZoZI , not ANSYS but principle is the same
@abhishekchoubey87507 жыл бұрын
Oh now I get it. Thanks. but how did you manage to find out the pressure- time excel sheet for your engine ?
@zissabek7 жыл бұрын
I combined data that I got from sensor measurements while engine testing with my own approximations; working with incomplete data is part of being an engineer:)
@jeremyfenton17123 жыл бұрын
Unconventional firing order? 4 3 1 2 ???
@kawaiirunnersdriftclub3 жыл бұрын
Same as my car... Cam is upside-down and slighty retarded a couple degrees . I noticed it ran smoothly, I honestly dunno why.