Fuel Injector to Paint Ball Cannon
Fuel Injector to Paint Ball Cannon
(OP)
Am building a science project with my son, and our intent is to use a filled dive tank as source for compressed gas, to make a paint ball cannon. Our hope is to use an automobile direct fuel injector as a solenoid controlled valve that can be purchase at an auto parts store.
I can not locate specs on injectors, can anyone direct me to specs on injectors, for pressure rating, response time, flow rate?
Is there an auto injector which can actuate 3000 psi?
Any help is appreciated
I can not locate specs on injectors, can anyone direct me to specs on injectors, for pressure rating, response time, flow rate?
Is there an auto injector which can actuate 3000 psi?
Any help is appreciated





RE: Fuel Injector to Paint Ball Cannon
Electronic injection injectors normal operate below 100 psi
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RE: Fuel Injector to Paint Ball Cannon
Don't these have higher pressure ratings than 100 psi?
Are any direct injectors controlled by solenoid, or are they all driven from a pneumatic distributor?
RE: Fuel Injector to Paint Ball Cannon
I don't know their specs
Regards
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Fuel Injector to Paint Ball Cannon
RE: Fuel Injector to Paint Ball Cannon
Unlike potato guns, I can not pump a chamber and then unleash the contents for a single firing, then repeat.
I am also using a source with 3000 psi and need a valve with electronic control capability so that a controlled packet of compressed gas is delivered, with the ability of rapid fire.
This is why I am looking for an electronically actuated, high duty cycle valve, like a fuel injector.
I am still hoping that someone has a lead on specs and details for injectors of this nature.
RE: Fuel Injector to Paint Ball Cannon
High Pressure Solenoid Valve - Pneuaire
www.pneuaire.com High pressure solenoid valves up to 3000 Psig for air and liquid prices starting at $56.00, ships within 24 hours, most models available for next day delivery.
yours
RE: Fuel Injector to Paint Ball Cannon
The products at pneuaire seem to encompass my requirements and I will pursue that path, rather than automotive.
Regards
RE: Fuel Injector to Paint Ball Cannon
RE: Fuel Injector to Paint Ball Cannon
RE: Fuel Injector to Paint Ball Cannon
RE: Fuel Injector to Paint Ball Cannon
RE: Fuel Injector to Paint Ball Cannon
solenoid.
I am still trying to get pressure and timing specs on
any of the solenoids, either from "waross" pneuaire products or direct injectors, or abs solenoids.
In the design, I need timing for open and closing of the valve, to determine the packet size of the charge.
To make a rapid fire cannon, I am looking to time a packet burst of pressurized gas to power the paintball down the barrel. Too much gas in the packet is a waste and too little reduces the effective velocity.
Paintball valves done work in this application (at least the ones that I have found) because they are mechanical, using springs to set and recoil to reset.
A solenoid valve which can operate with a minimum pulse width of 1-3ms from full open to full close would be optimal. Obviously the apperature size and pressure plays a role in the relationship of TimeOpen vs. Packet Size, however a smaller solenoid valve with fast response is preferred, in that I can use more than one valve in parallel.
Design Engineers for the automotive industry must have some place to access these specs for thier design criteria. I am trying to find this source.
RE: Fuel Injector to Paint Ball Cannon
RE: Fuel Injector to Paint Ball Cannon
RE: Fuel Injector to Paint Ball Cannon
Essentially the fully expanded volume needs to be about 1.2-1.5 times the barrel volume, so the packet size is that volume divided by 200. (quite small)
And "richdubbya" I have considered your suggestion as a backup, although the project would be cool to use a computer program to regulate the packet delivery with a simple timed open and close signal. Using some bits from the parrallel port of a computer into an ampliphier, then driving the solenoid.
Thanks all
Question to "01cobra" can you tell me a year and vehicle type for the abs valve you think is the most responsive so I can buy one and test it?
RE: Fuel Injector to Paint Ball Cannon
RE: Fuel Injector to Paint Ball Cannon
VW/Audi sells 2 liter 4 cylinder direct injected engines, also MazdaSpeed 2.3 liter and Lexus 3.5 liter V6. All these are brand new on the US market so you may not be able to even buy a replacement injector yet. The outboard motor people have been selling them longer in US. The Yamaha is the highest pressure system but I think it is under 1000 PSI. Mitsubishi was the first in Japan with DI gasoline engines in the Galant but it was never sold here. There have been others in Japan and Europe. Our lower NOx requirements and general indifference to fuel efficiency have kept them out until now.
The diesel common rail electronic injectors will handle the pressure you are looking for (and more) but I don't know what US vehicles use them. Automotive ones may not flow enough for you, however I'm sure if you get something for a class 8 truck it will be up to the job. I hate to think what they cost but maybe you could find a diesel repair shop with one that has some defect unimportant to your application. Electronic drive requirements may be substantial (42V?).
RE: Fuel Injector to Paint Ball Cannon
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Fuel Injector to Paint Ball Cannon
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RE: Fuel Injector to Paint Ball Cannon