Venturi = Boost?
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Joined: Mar 2002
Posts: 12,604
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From: East Central Florida
Venturi = Boost? Way, way back I read about a system which used SCUBA
tanks, solenoid valves, jets ala nitrous systems to push a
cold / forced air shot into the intake. The jet pushed added
air via venturi effect.
It seems to me like a properly constructed, jetted inlet tube
could do this with the nitrous even more effectively. Maybe
there is some of this action in some systems but I guess
you'd be looking to see greater than BARO manifold pressure
and I haven't heard of anyone getting there.
But could you?
I'm thinking multiple small jets spaced about the outside of
a tube, maybe just drilled-in at an angle with a supply ring
welded outside. More jets involving more air "hydrodynamically"
than a single big'un.
I don't know if the nitrous shot is strictly a zero-sum energy
source (sink) or if the energy stored as pressure could be
"harvested" as a bonus.
Food for thought....
tanks, solenoid valves, jets ala nitrous systems to push a
cold / forced air shot into the intake. The jet pushed added
air via venturi effect.
It seems to me like a properly constructed, jetted inlet tube
could do this with the nitrous even more effectively. Maybe
there is some of this action in some systems but I guess
you'd be looking to see greater than BARO manifold pressure
and I haven't heard of anyone getting there.
But could you?
I'm thinking multiple small jets spaced about the outside of
a tube, maybe just drilled-in at an angle with a supply ring
welded outside. More jets involving more air "hydrodynamically"
than a single big'un.
I don't know if the nitrous shot is strictly a zero-sum energy
source (sink) or if the energy stored as pressure could be
"harvested" as a bonus.
Food for thought....
I believe Zex has done some thing like this in there plate systems, http://www.zex.com/Base/Video/ZEXPlate_WEB.wmv but i havent seen anything for ls applications.
I think it could only work in an IR system, but may not be practical.
The amount of N2O per cylinder would be great, and the boost effect would likely be minimal if at all.
With N2O it's so much easier to just increase the jet size than it is to struggle for a tiny bit of boost pressure.
Boosting a sealed plenum with pressurized air is also impractical because the tank required would be as large as the car.
The amount of N2O per cylinder would be great, and the boost effect would likely be minimal if at all.
With N2O it's so much easier to just increase the jet size than it is to struggle for a tiny bit of boost pressure.
Boosting a sealed plenum with pressurized air is also impractical because the tank required would be as large as the car.
Originally Posted by cyipher
I believe Zex has done some thing like this in there plate systems, http://www.zex.com/Base/Video/ZEXPlate_WEB.wmv but i havent seen anything for ls applications.
now some Honda owner is going to mount one on the back of the car to provide thrust.
Thread Starter
Moderator
iTrader: (11)
Joined: Mar 2002
Posts: 12,604
Likes: 7
From: East Central Florida
I'm just thinking about the possible upside, the only thing
better than cold dense air is more of it (for less, of the
limited bottle contents).
Think like jet pumps for your well or your Sea-Doo; a little
high velocity jet impels a larger, lower velocity stream. As long
as that velocity exceeds the "natural" draw-in of the motor
I figure there could be a bonus.
better than cold dense air is more of it (for less, of the
limited bottle contents).
Think like jet pumps for your well or your Sea-Doo; a little
high velocity jet impels a larger, lower velocity stream. As long
as that velocity exceeds the "natural" draw-in of the motor
I figure there could be a bonus.
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I wonder too.
Maybe a sensitive pressure transducer in the intake port near the valve could show some results?
It still seems like it would take a very large dose of nitrous on the order of double the engine power or more to get the extra benefit.
I wonder what size a shot was used in the demonstration video.
Maybe a sensitive pressure transducer in the intake port near the valve could show some results?
It still seems like it would take a very large dose of nitrous on the order of double the engine power or more to get the extra benefit.
I wonder what size a shot was used in the demonstration video.
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TECH Apprentice
Joined: Jul 2004
Posts: 304
Likes: 0
From: Texas
Originally Posted by jimmyblue
Way, way back I read about a system which used SCUBA
tanks, solenoid valves, jets ala nitrous systems to push a
cold / forced air shot into the intake. The jet pushed added
air via venturi effect.
It seems to me like a properly constructed, jetted inlet tube
could do this with the nitrous even more effectively. Maybe
there is some of this action in some systems but I guess
you'd be looking to see greater than BARO manifold pressure
and I haven't heard of anyone getting there.
But could you?
I'm thinking multiple small jets spaced about the outside of
a tube, maybe just drilled-in at an angle with a supply ring
welded outside. More jets involving more air "hydrodynamically"
than a single big'un.
I don't know if the nitrous shot is strictly a zero-sum energy
source (sink) or if the energy stored as pressure could be
"harvested" as a bonus.
Food for thought....
tanks, solenoid valves, jets ala nitrous systems to push a
cold / forced air shot into the intake. The jet pushed added
air via venturi effect.
It seems to me like a properly constructed, jetted inlet tube
could do this with the nitrous even more effectively. Maybe
there is some of this action in some systems but I guess
you'd be looking to see greater than BARO manifold pressure
and I haven't heard of anyone getting there.
But could you?
I'm thinking multiple small jets spaced about the outside of
a tube, maybe just drilled-in at an angle with a supply ring
welded outside. More jets involving more air "hydrodynamically"
than a single big'un.
I don't know if the nitrous shot is strictly a zero-sum energy
source (sink) or if the energy stored as pressure could be
"harvested" as a bonus.
Food for thought....
Originally Posted by white2001s10
People have already been using compressed gas to help spool the turbine. I think CO2 is the normal though.
Originally Posted by white2001s10
A friend of mine has a nozzle mounted on the exhaust snail of his turbo. I'll try to get a pic of it by the weekend. I don't see him every day.
I was thinking about tapping a 1/16" nozzle on the cold side of the turbo pointing at an angle at the turbine.
Originally Posted by white2001s10
I think CO2 is cheaper and can be used at much higher pressures to deliver more force. I've never used it myself, but that's what I hear.
