NS Dev
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| posted on 26/7/11 at 08:04 AM |
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Water/methanol injection through fuel injectors?
Been doing a little net trawling, which, as seems to be the case these days, has only thrown up lots of americans arguing!
I have found a few examples of people injecting water through fuel injectors, but durability evidence is a little sketchy. One has done a good number
or full load dyno runs, and another used it on a road car for several years.
Anybody got any idea whether injectors are likely to suffer terminal failure in short order?
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
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FASTdan
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| posted on 26/7/11 at 08:19 AM |
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why would you need to bother when you can buy the proper WI jets for a few quid? Excuse my ignorance....
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NS Dev
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| posted on 26/7/11 at 08:27 AM |
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Would like to map the water injection and control it all through one ECU.
I may have missed something when looking but none of the kits I have seen seem to have very good control over the injection, either just switching the
pump (sounds pretty crap) or using a big nasty solenoid which cannot be PWM controlled......
I may have missed something though!
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flibble
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| posted on 26/7/11 at 08:36 AM |
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Just an idea, how about using a nitrous kit/solenoid with one of the progressive controllers. The solenoids/controller I had from Wizards of Nos
seemed very duarable and controllable?
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Volvorsport
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| posted on 26/7/11 at 09:13 AM |
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aquamist map water injection , it surely is possible.
injectors to suit water injection can be found - we use these type of pwm injectors for urea injection in exhausts , theyre made by siemens .
www.dbsmotorsport.co.uk
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NS Dev
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| posted on 26/7/11 at 09:41 AM |
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ahhhh, interesting! Hadn't thought of adblue injectors......
Yep, I'm aware of the aquamist stuff, will look further into it but on first inspection a lot of it looked like it would be clumsy to drive
accurately with an ecu.....I may well be wrong though as I am a know-nowt when it comes to this stuff!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
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NS Dev
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| posted on 26/7/11 at 09:41 AM |
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what vehicles have 12v adblue injectors, just thought most will be 24v!?
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
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NS Dev
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| posted on 26/7/11 at 09:45 AM |
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just had a look, as I suspected, the aquamist mapped system uses their own controller (all the functions of which I can already do with my existing
DTA S60 Pro ecu) and a stainless steel industrial 12v solenoid valve, plus a shurflo pump
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
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Volvorsport
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| posted on 26/7/11 at 10:21 AM |
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must say it didnt cross my mind about the 24v.
you could use an inverter , we use a dropper to run a 5v air flow meter . they take very little ampage , in fact we protect them with a 5 amp fuse
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but if you can just buy the aquamist valve , that would save you a headache .
www.dbsmotorsport.co.uk
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Snuggs
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| posted on 26/7/11 at 10:36 AM |
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Anyone else keep reading the title of this post as WATERMELON 
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My mind not only wanders, sometimes it leaves completely!
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NS Dev
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| posted on 26/7/11 at 11:10 AM |
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quote:
Originally posted by Volvorsport
must say it didnt cross my mind about the 24v.
you could use an inverter , we use a dropper to run a 5v air flow meter . they take very little ampage , in fact we protect them with a 5 amp fuse
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but if you can just buy the aquamist valve , that would save you a headache .
think you might be right.....
still tempted to leave a rig in the corner of the workshop seeing how long a fuel injector will work with water for.
just need an injector driver to pulse it...
anybody?
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
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matt_gsxr
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| posted on 26/7/11 at 12:03 PM |
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You can use an indicator relay. That should pulse it forever. I use it when cleaning them. Don't forget to include an in-line filter.
It will depend on corrosion, some of them go a bit rusty if left in a damp workshop. Both methanol and water are bad for corrosion.
Matt
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NS Dev
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| posted on 26/7/11 at 02:25 PM |
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It's a while since I've been on here, and this has just reminded me why this forum is great!
Cheers, never thought of an indicator relay!
Perfect for a little trial!
Next stop, buy a Shurflo high pressure pump! (these seem to be what all the water injection companies re-badge as their own! )
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
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Volvorsport
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| posted on 26/7/11 at 05:04 PM |
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i do have a spare adblue injector if you want to try it .
if you think about it carefully , you only ever want just the right amount of atomised water so shouldnt really need to use a pwm device , it just
needs to be a quantity of water over time at pressure , you could certainly alter the voltage to reduce/increase flow of the pump .
i would think if the solenoid valve is small enough it can be controlled with pwm anyway , its either open and shut anyway !
trying to think back when we played with WI a bit , the time between on and off doesnt have to be so finite , i think because of the reason above ,
its just a quantity of water at a certain time , nonthing like the accuracy needed for fuelling .
you could try low pressure squirting !! oo er with a 12v washer pump and a nozzle from a garden squirter , it really can be that simple .
www.dbsmotorsport.co.uk
getting dirty under a bus
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T66
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| posted on 26/7/11 at 06:08 PM |
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Nat you can borrow my Snow pump if you want, like I said earlier I need a hand with mine...
could stick it in the post tomorrow
http://www.snowperformance.net/products.php?p_cat=324
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NS Dev
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| posted on 26/7/11 at 06:43 PM |
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tempting but I'd better get my own in case I break it!
Looks like they are about £100 new for the shurflo ones
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
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T66
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| posted on 26/7/11 at 09:01 PM |
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quote:
Originally posted by NS Dev
tempting but I'd better get my own in case I break it!
Looks like they are about £100 new for the shurflo ones
Im happy to let you have a borrow, as we used to get told in the garage "If you bend it you buy it"
whats the chances of it breaking, fairly slim Im guessing - let me know.
You can buy me a shurflo one if you shag it.. You may not be happy with your experiment.
 
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coyoteboy
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| posted on 26/7/11 at 10:37 PM |
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I recently had a chat with some injector manufacturers as I was looking to use some for precise metering of water in a lab experiement. All the ones I
asked said their internals were stainless/water happy assuming no nasty contaminants. At the moment we have a shurflo pump, fuel pressure reg and
3xID1000 injectors being built into a test rig. PWM from a constant pump pressure is the only reliable way of doing it.
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NS Dev
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| posted on 27/7/11 at 12:28 PM |
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superb!!
thank-you very much indeed, that's the sort of info I wanted to hear!
once again, trust locostbuilders for lateral thinking!!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
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