Does anyone have the down low on an automatic IC sprayer. What I am looking for is something that can read intake temps and spray accordingly. I can come up with the resevoir and pump. I would like to find something that would run the relays off an intake temp sensor.

Or

What I would need to put together a system of my own.

All you'd need is a temperature switch that will activate at a certain temp, and possibly put that in line with a relay which will then turn on the pump.

why not just use water injection, as in into the air stream and not outside of it

You could make something fairly easy, or if you have an eprom ECU, I could make a chip that will actuate an output(like EGR or Purge) based on IAT(or anything else).

Eric you are the shit.



Electronics super genius

how about making something that can be used on 1g as well as 2g cars.. a single product.. now that would be something better...

-E

Come to think of it, you'd probably want to add another IAT sensor, preferably in the upper IC pipe.Using the existing IAT would be pointless.

yeah ive considered this product before and talked to a guy in cali and a local friend who would both develop it - use an IAT in the IC outlet and tap into the TPS as well, when IAT is over a certain temp or TPS is > 70%, give the sprayers power. would have to have a window on the temp, turn on over x temp and turn off under y temp. we were going to do it with a little microcontroller, or alternatively an adaptation of the zeitronix TCAC (throttle controlled A/C, which does the TPS portion of the job already).

would be cool and i'll eventually do it. i have 2 questions though - do you think you'd have to spray enough water that it'd be wise to have an accumulator, and can dsm fuel pumps run long-term in water? i read a post a long time ago saying the fuel pump was lubricated by the fuel it pumped so it wouldn't work long term in water, but i don't remember at all who said it or if they knew shit about it

I could whip it up in less than a 1/2 hour with a microcontroller.

I would say using a fuel pump is a bad idea.

I would use a second sensor for the cooler. It is a cool idea about using the ECU, but I want to keep it simpler. My ideal setup would consist of

sprayer nozzel (green house scavanged)
water resivor (junk yard scavanged)
pump (jys)
intake sensor (?)
relay to run (?)
override switch

I would prefer it be a stand alone setup. It easier to figure out what wrong if theres less to it.

Do you guys have laptops? How about this?

I can add up to 3 more inputs for various things.You could use it for nitrous, IC spray, water injection, etc.

looks good. Are you going to make the kits also?

What do you mean by kit?

And I could pre-program the switch, if you don't have a laptop.

Shitty drawing, I haven't done a schematic capture yet.

C1= 100uF 25 volt electrolytic cap
C2= .001 uF 25 volt ceramic caps
C3= 10uF 25 volt electrolytic cap
C4= .01 uF 25 volt ceramic caps
D1 and D2= 5.1 volt zener diodes
R2= 2.2k 1/4 watt resistor
R3 and R4= 1k 1/4 watt resistors
R1 = 2k 1/4 watt metal film 1% resistor
IC1= Microchip PIC12F675
ADC3 controls the relay and may need a npn darlington transistor or a p channel MOSFET(radio shack) depending on the relay used


IC1 needs to be programmed with my code, I'll do it for like $15 w/chip included.This works in my simulator, but some of the ceramic caps may need slightly different values in the actual vehicle.Everything should be available at radio shack, except for the 12F675, I have a million of these anyway.You also need a switch and a DB-9 serial plug and possibly a max233 chip depending on your computer.Total parts should be around $25-$30.I can program the temp and tps values when I burn the chip or you can give me a little $$$ and I'll give you the above software.

damn dude, i could have really used some mad electronic skills like that in my physics 131 lab today!

that would be excellent, i'll start researching pumps and fuel pump lubrication. free source of pumps would be killer.

i bought a pump from these guys awhile ago

pumps

i was recommended them by a few other guys who have made their own water injection systems. if my car ever runs right i'll start putting that onto as i have all the parts just sitting around.

Are you guys talking about water injection or IC sprayers?

i'm pretty sure they are all talking about sprayers, sans me

A cheap inline windshield washer pump will work in that case.You don't need much pressure or volume.

i have one of those pumps laying around if anyone wants it...

psh, go big or go home. winboro 255 all the way;)

actually, you could use a diverter valve, like a nos solenoid, from your washer bottle to the sprayer. that'd be pretty convienient

Heres a more easily read schematic

Re: Automatic Ic Sprayer
 

Are any of you still interested in these? I'm about to order the PC Boards, which for those who want to save a little cash and assemble it themselves, will be about $9-$10 a piece.If enough people are interested, I can get the board cost down to about $5.

Also I'm wondering if I should make them connect through the USB port or the serial port?

If I go with the USB port, it will make it much easier for you guys to set them up on your home computers and not need a laptop.If I go with the serial and no laptop was available, you would have to use a home computer to set them up, and you'd have to hook up a 12v power and ground as well.But since USB provides its own power, you just have to plug it in to a USB port, program, then bring it out to the vehicle.

Re: Automatic Ic Sprayer
 

Also, are 2 inputs and 1 output enough? Should I add more?

Re: Automatic Ic Sprayer
 

Finally, would it be better if it got its input signals from the ECU through the diagnostic port, or if it got its inputs directly from the sensors?

Re: Automatic Ic Sprayer
 

Actually, a serial provides more power than a USB does. We went through all of this at work. We went through 6 different types of programmers trying to get one to work with a laptop. That is also why the AEM EMS uses a serial. The only problem is that most newer laptops don't have a serial. We ended up making a programmer at work that uses a 9v battery to power itself. That works pretty slick. I can show it to you sometime if you want to see it.

Re: Automatic Ic Sprayer
 

I'm talking about actual voltage/current to power the device, not signal level power.The USB provides 5v up to 500ma to power external devices, while serial provides no voltage or current for external devices.The supposed self powered programmers work by robbing power from signal or handshaking lines, something RS-232 isn't designed for, and can only supply a very small amount power anyway.RS-232 is supposed to have +/- 12v signal levels, which even at that level, can barely power low current programmers.With newer computers and laptops, the drivers only have +/-5v, thats why you couldn't get your programmers to work.I would imagine AEM uses serial as a cost saving measure only, as USB is more expensive and difficult to implement.Other than cost, RS-232 is far inferior to USB.

Re: Automatic Ic Sprayer
 

If you have DSMLink, you could use the Nitrous Controls to trigger a sprayer as needed.

Re: Automatic Ic Sprayer
 

If he had DSMLink, I doubt he would've asked about an auto IC sprayer in the first place.

Re: Automatic Ic Sprayer
 

I must have misunderstood what you were trying to do with the USB port. This should be a marketable product, and it is universal so it would work on more than a DSM.

Re: Automatic Ic Sprayer
 

with a check valve and a diverter valve, you could use your exsisting washer fluid container from either back or front or add another one, they work well. We have used them in the past on momentary switches for IC spraying. Of course you could control them via other means, iat/ecu etc. If you are after cheap and simple, you can't beat it.

Re: Automatic Ic Sprayer
 

Yep, I was refering to bus power and you were refering to signal power, easily confusable.

It sucks, I'm to lazy/unmotivated to market anything.It took me 3-4 months just to design the PCB, which took 15 mins

BTW What were you programming?

Re: Automatic Ic Sprayer
 

We were flashing Eproms in our corn burning stoves.

Re: Automatic Ic Sprayer
 

You just never know until you ask. :D