hydrogen - Page 8

Does this modify the O2 signal to the ECU, or is it giving a constant false reading to the ECU not matter what the O2 signal is putting out.

It sends out only what I want it to. FOr example if the O2 is sending a .4volt signal it adds .0022 volts to is. there is a constant .0022 volts on the output line or what ever I set it to.
 
SO yes it does modify the signal from the o2 to the ecu by adding a samll voltage.
 
 
On the first EFIE drawing I lost voltage just after R4. No matter how much I work with it I can not seem to find what is wrong.

The reason I ask is I see two O2 output lines but no O2 input line. So, I guess your unit is just adding voltage to the O2-ECU line?

Yes just sending the volts in. They all do the same thing. But I no longer have to splice the o2 line. And the o2 volts does not get back to the circuit the diode prevents it. The chips stay cool from the 100k and 1k resistor.
 
So far everything is working well.
 
The eagle research does not change the volts from the O2 either. it just adds volts to the ecu. again the same thing this does.

Ok, gotcha, the unit I am trying to get working takes the signal form the O2 and adds voltage then sends it to the ECU. I am starting to like yours better. I just order a EFIE online and I think just like yours. So we'll see what I can get to work best.

That was the original circuit I was working on. But somewhere after R4 the voltage dropped off to .0002. Which is too low. I will get it working. But I need to figure out what is going on with it.
But the eagle research (first drawing modified) and the second drawing do the same thing. The ER one you are cutting the o2sensor wires feeding them into you circuit and then back out to the ecu. You are just rerouting the O2 wires but you are still just adding a small voltage. You can do that with one wire when you only have to send a signal out.
 
I could not see spending the $60 for it. Plus I want to learn from what I do.
 

Actually this is what I ordered, http://stores.homestead.com/hydrogengarage/Detail.bok?no=42 If I ues this one I just won't hook up the MAP adjustment wire, and just use the O2 adjuster.

link will not work 4 me

Its Sku# FMDB at hydrogengarage.com. The title is "Fuel Mixture LED Display Monitor & Box".

Hey, its been a while, how are everyone's projects coming? Im pretty much waiting on two parts so I can finish putting it together.

Just finished reading thru this thread and it's interesting what you guys are trying to do. 
 
Has anyone considered using the TPS (Throttle Position Sensor) signal to control the amount of hydrogen admitted to the intake?

I have thought about doing that, the pulse modulater I am building has a POT that I need to attach to the throttle to increase the gas output when you step on it. I thought about tapping into the TPS but felt uncomfortable doing that, so I will just use the POT.

Thats a good idea ^^

I don't think you would need to worry as long as whatever you hooked to the TPS was fairly high impedance so it didn't alter the voltage signal to the computer. 
 
Forgot to mention earlier what most here already know and that is since hydrogen is the smallest atom, it's impossible to completely contain it even in a heavy wall st-st container. 

Plastic can't hold Hydrogen gas indefinately, no, but it can hold it long enough to introduce it into the engine. Helium is the second smallest atom, yet a balloon can hold about 70% of the helium over the period of a couple of days, and its a lot less dense than PVC.
Not to mention that the hydro atoms are moving faster than the plastic molecules, so just from the state of matter, it makes it harder for it to pass through.

Yes, plastic will not hold it indefinately, but it hold for quite some time. When I did my test unit I used schedule 40 pvc pipe and four SS plates. I was able to get up 75 psi, way above anything needed, but it lost the most pressure within the first few hours then leveled out after about 18 hours to 50 psi and then stayed there for six days. Durning the six days I noticed that the pressure would actually fluxuate between 50 and 55 depending on warm it was. 
 

And that's why the party balloons have the mylar coating, so they hold it longer.

true that... I was just trying to think of a good way of explaining it...

His PVC container will still hold it as long as he needs it to.

Has anyone got a unit that works yet? I've been reading here and on the web and just cannot find a review that I absolutely trust... I'd love to add this to one of my hoe's. (hopefully both)
 
G...

northey is still in the build process, so we'll see when he gets it hooked up and gets the bugs worked out.

Making good progress. My back ordered parts came in to day, so hopefully this weekend I will have something for you guys.

nice northey, i should have mine on in the next week or two.  ill post some pics but i cant seem to paste a pic when i make a post, what do i need to do on this site?

Yesterday was a good day, got alot done, got most of the equipement installed, next comes wiring.

I'm dieing to hear this is actually a viable solution to improving gas mileage. I have my doubts as it seems way to easy to have been overlooked to the degree it would have been if it works...

G..

It'll take time. I think northey is winning the race so far