vivalavolvo Posted December 14, 2012 Report Share Posted December 14, 2012 Hello All, I thought you guys might be interested in my current project. I am building a fuel injector cleaner, basicaly from what i have in my junk bins. So far i have a functioning machine and it works quite well. I had a real dirty set of 240 injectors that now flow evenly. Right now its basicly 3 timed cycles at 50% duty cycle. 5 and 30 minute cycles for cleaning, then i have a 30 second cycle i use to measure the flow with graduated cylinders. I plan to make two 30 second cycles at 80% and 100% duty cycle for more real world flow testing, but as is gives me a good before/after measurement. One issue i ran into is running low res injectors. The 740 green tops are 2.4 ohms and that over loads my power stage, but can run 2 at a time. I will beef that up when i get more supply. Also, i want to come up with a quick chance system for different fuel rails, and have a stande alone adjustable FPR, for now tho it seems most Bosch injectors should work in the 240 rail. So far the parts list is: -240 Fuel rail -850 Fuel filter -Some Mercedes Fuel pump -clear PVC tubing and T fittons from home depot (these wont last long, i know) -Scrap wood -Arduino micro controller -Thrown together power stage for injector and relay control -1 Gallon tank from some lawn tractor. Video: http://youtu.be/bJEU2lgrNBo Pix: http://imgur.com/a/Hco9e Please don't mind my typos. For some reason this forum disables FireFox's spell check and ability to edit, and i am bad at the key board some times. Link to comment Share on other sites More sharing options...
Simply Volvo Posted December 14, 2012 Report Share Posted December 14, 2012 Curious on the max pulse width of a fuel injector. Does it depend on the injector or is it the same for every injector. I remember reading if you leave a injector open for more than like 15 or 20ms it can overheat and get stuck open. Link to comment Share on other sites More sharing options...
vivalavolvo Posted December 14, 2012 Author Report Share Posted December 14, 2012 Curious on the max pulse width of a fuel injector. Does it depend on the injector or is it the same for every injector. I remember reading if you leave a injector open for more than like 15 or 20ms it can overheat and get stuck open. Hmm, that is something i am trying to look into. Right now they are running 50ms on, 50ms off. OE flow rates are measured at 100%, but 80% is the real world goal. Link to comment Share on other sites More sharing options...
ryan850-t5 Posted December 14, 2012 Report Share Posted December 14, 2012 That is pretty cool none the less. Im sure this will just ge prototype 1 in your process to make it better Link to comment Share on other sites More sharing options...
Mesoam Posted December 19, 2012 Report Share Posted December 19, 2012 this guy has been doing inj cleaning for years, he might be able to help if you aren't trying to take customers http://www.cruzinperformance.com/fuelinj.html Link to comment Share on other sites More sharing options...
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