I know that under normal conditions, the fuel rails are under high fluid pressure which causes the injectors to spray the fuel like they do.  Most people that have been experimenting with hydroxy have been getting lower pressures from their cells. Then they use the vacuum to draw the hydroxy into the cylinders. There is an inherent danger of using the fuel rails though, because of the hydrogen could leak out of the rail when the engine is not running and cause explosive gases to build up under the hood. That seems to be one downside that I have thought about when trying to figure out how to run an engine using the fuel rails and fuel injectors. The injectors would probably have to be modified as well to get enough gas into the cylinder to maintain the engine RPMs. I have also seen some files that have pressure cutoff switches that turn the cell off when the cell reaches a certain pressure, sometimes low pressures sometimes higher pressures.

Or perhaps inject the HHO with a T just befor the fuel pump so it is on the low pressure side, is drawn in and presurized to be delivered with the fuel. I am also wondering if the o2 extenders theat pull the sensor out of the exhaust streem work to control the signal or is the computer chip better?
Thanks
Rickter

   I think the best bet while running a HHO gasoline mix to inject the HHO into the intake. Reasons being is, HHO being in a gaseous state mixes easier with other gases(in this case, Oxygen) where as it doesn't mix so easily with a liquid and could cause pockets of HHO resulting in a unstable burn where one burn has more or less HHO or gasoline than another burn. Also I'm pretty sure that no HHO cell produces more pressure than any vehicles fuel pump so if your try injecting the HHO into the gas line between the pump and injector rails your probably going to get more gasoline in your HHO line than HHO in your engine.
   I believe fuel pumps run upwards of 55psi and trying to run a hydrogen cell that high is suicide making injecting HHO into the intake your most reliable, safest and therefore your best bet. probably the same for trying to run straight HHO and no gasoline. unless you could retrofit the current injectors to inject HHO instead, but even still i think you'd see better performance from the vacuum of your intake which is suppose to help your cell create more HHO in return.

So if i understood correctly...people have been running straight HHO (no gasoline) into there engines with no need to replace parts with stainless steel?? even exhaust?? i am going to have nightmares once i try gettin my engine to run on straight HHO, i can see myself prying off the head and seeing nothing but rust. anyone know of a site where they have documented fairly extensive tests with both HHO/gasoline mixes and straight HHO?

Hello all,

I have been searching the net for a calculation I am trying to make.  I have found some calculators, but I would like for someone to verify the numbers.  I hope someone can help.
I am trying to get how many liters/minute of gas come out of a pipe with .062 diameter inches at 5 PSI.  I'm not concerned with the length of the pipe or the smoothness of the walls.  I'm just looking for the volume one could expect out of this setup.

I didn't know where else to put this question.

Thank you

@vdubdipr

Yes I understand how to measure HHO output as you described.  I am looking for a validation of the amount that should be produced at 5 PSI described in my previous post.  I suppose I should tell you why this is important to me.  A video I saw on youtube showed a 5 HP engine idling on straight hydrogen supplied from a tank.  The narrator commented that the gas was fed into the engine directly into the intake (there was no carburetor).  There was 5 PSI coming out of the end of the feed tube which had been reduced at the end to .062 diameter.  This is a good benchmark for knowing how much gas needs to be produced to run an engine.

Thank you

@joemumu

Here is a calculator that can be used I think. It tells that flow rate is 4.27 litres/minute (261 in^3 / minute) or (0.151 ft^3 / minute)
I'm not sure but this is what it says, if the pipe length is 100mm (3.93in). If the length increases, flow rate goes down.
Here is the calculator:
http://www.pipeflowcalculations.com/airflow/index.htm

@sulake

Thank you for verifying those numbers.  It seems as though it would take almost 5 liters/min to keep a 5HP engine running at idle.  If these numbers are correct it seems as though we'll be running HHO supplementing petroleum use at the moment.  To me, this is still a viable add on, as Zerofossilfuel reported a 20% increase in gas mileage.  If I recall correctly he was producing 1.74 l/min with what seemed to be a fairly compact fuel cell.  If you haven't seen his videos on youtube, I suggest you check them out.  He has amassed a great deal of knowledge and shares data freely with us all.
Sorry to hear about your engine.  IMHO I would be skeptical of the damage being blamed on the HHO alone.  5 days doesn't seem like much time to do that damage.  Is your engine computer controlled?  The condition you described would cause preignition as you said.  The computer would retard the timing with the signal it gets from the knock sensor.  If your vehicle is equipped with O2 sensor(s) the signal to the computer would make it richen the fuel to compensate for the extra O2 it sensed.
The no oil thing is really goofy.  How many miles/km does the engine have?   Has anyone seen this before?
There is a wealth of information on this site.  How long have you had your current fuel cell in operation?  Or how long would you estimate it has been under power and producing HHO?  I'm sure someone will be able to help you figure out why your HHO production seems low as well as any other issues you might encounter.  It takes some time to condition the plates.  They seem to produce more HHO after extended use.  Good luck.