How to run an engine on HHO gas

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  • เผยแพร่เมื่อ 12 ก.ย. 2024
  • A video explaining how to feed HHO Gas to an engine, by blocking the intake port completely so no gas escapes, the gas pressure controls the engine speed. Watch the video to see how!
    Feel free to contact me on the 'Hydrogen Guys' Facebook page for the Hydrogen Flashback Arrestor used in this video.
    See more at:
    / hydrogenguys

ความคิดเห็น • 124

  • @Hydrogenguys
    @Hydrogenguys  7 หลายเดือนก่อน +3

    After years of you people asking, I am now able to supply the Hydrogen Flashback Arrestor used in this video 😀
    feel free to reach out on my Facebook page: facebook.com/hydrogenguys

  • @MrBobWareham
    @MrBobWareham 2 ปีที่แล้ว +20

    Many years ago I ran my old Rover car on gas and made a valve that let gas through on demand, so no gas until suction from the inlet valve and that worked very well I would think a suction valve would be ideal for HHO.

    • @mastermatt9182
      @mastermatt9182 8 หลายเดือนก่อน +1

      do suction valves stop the gas from flowing back like a flashback arrestor? or did you have to add them both onto your gas line.

  • @HeavensWarrior700
    @HeavensWarrior700 ปีที่แล้ว +4

    The flashback arrestor up against the intake is a smart move. I would place seals between the plastic washer and the intake to make sure it is air tight and possibly a seal between the arrestor and washer as well.

  • @snoopybrown6021
    @snoopybrown6021 3 ปีที่แล้ว +8

    Good job,best video on this subject I have seen on TH-cam 😊

  • @waterfuel
    @waterfuel 2 ปีที่แล้ว +3

    Briggs 18HP Lawn mower engine ran on water in carb 2008. 6-10amp pulses THROUGH SPARK PLUG from on board ring dual alternator with late ATDC timing, Small Hydrogen formed at plug + water vapor pressure same time. S1R9A9M9 discovered this new process. Self sustained as ignition high volts is by Magneto - not battery coil. Triple hand wound coil forms magnetic field over plug wire extending timeing 0-minus 34 degrees. Accessory spark gap required while EGR of embedded nitrogen compoinnds increases efficiency if used. Battery start, then disconnected. See videos 1+2!

  • @alhwaity2
    @alhwaity2 3 ปีที่แล้ว +5

    Great job, but if you let the engine suck vacuum from hho it's will work better and the production of hho under vacuum more higher than normal, the more vacuum the lower current.

  • @BC-uu6iz
    @BC-uu6iz หลายเดือนก่อน

    thank you for the details, maybe would be great if another vid on four-cylinder / carburetor cars? thanks

  • @peterjeffries8298
    @peterjeffries8298 2 ปีที่แล้ว +3

    The plastic plate is to stop heat sink into the carb. That can cause fuel vapourisation in petrol/2 stroke engines..

  • @wesleycastner4860
    @wesleycastner4860 3 ปีที่แล้ว +5

    Try advanced timing just before tdc for knock correction i believe it could be cause in ur valve issues hydrogen has slight imploding effect just before explosion

    • @brenohighland1168
      @brenohighland1168 7 หลายเดือนก่อน

      hydrogen burns soooo fast that the spark needs retarding

  • @truethought369
    @truethought369 4 หลายเดือนก่อน +1

    If there is a plastic plate as you call it? Also looks like a spacer, it is normally there as a heat sink, so that the carburettor
    does not get too hot. This is to stop the petrol evaporating from the carburettor before use!
    Looking at your drawing, it looks like there would not be enough diameter to feed the engine?
    Mind you, this is probably not to scale.
    I do like the way you have made it nice and simple to understand. Thanks for your drawing, have a great day.🤪

  • @mikewalton7615
    @mikewalton7615 3 ปีที่แล้ว +4

    Hi James,
    Nice video you have helped me a lot.
    Have you thought about injecting the HHO directly into the combustion chamber and welding the intake valve closed?

    • @Wingnut_Stickman
      @Wingnut_Stickman 2 ปีที่แล้ว +7

      I want to say "Remove the intake push rod, leave the welder on the shelf." as a simpler means to accomplish the same thing.

  • @-_-unseen-_-
    @-_-unseen-_- ปีที่แล้ว +4

    A gas engine is also an air pump, since your design restricts most air flow it will be interesting to see how it performs.

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว +1

      you can see the engine running in one of our videos, it did run well but consumed alot of fuel.

    • @brettjasonheadinventor
      @brettjasonheadinventor ปีที่แล้ว

      Yes ICE are air pumps that generate lots of heat. Any restriction in the air intake will decrease the efficiency of the engine.

    • @Scotty-vs4lf
      @Scotty-vs4lf ปีที่แล้ว

      @@brettjasonheadinventor or in the exhaust

    • @vahagnmelikyan2906
      @vahagnmelikyan2906 ปีที่แล้ว +1

      Hho already comes with air

    • @IrishSpyHD60
      @IrishSpyHD60 8 หลายเดือนก่อน

      ​@@brettjasonheadinventorso it seems we need a better hho generator 🤔
      I wonder if a SLS metal printer made lattice structure would provide adequate surface area. To the best of my understanding efficiency of the generator is what holds this back from mainstream use.

  • @redzkyorsky1748
    @redzkyorsky1748 2 ปีที่แล้ว +1

    Combustion stroke both valve intake and exhaust are normally close,so much better you install one way valve from the hho line,to avoid flash back thats it.

  • @polyfoamcoats1650
    @polyfoamcoats1650 2 ปีที่แล้ว +6

    How do you calculate how much hho gas volume you need based on the specific engine and cylinder size, along with a rough estimation for how long you can run it.

    • @zephyrtolliver4113
      @zephyrtolliver4113 2 ปีที่แล้ว +1

      I found an HHO generator model that puts out about 2.5 LPM, I think if I doubled the model 5 LPM would be enough to fuel an engine like this. He runs the engine at 50 PSI in a later video, so I think I would need a generator that produces 4.2 LMP, if I can get an output of 5 it would be perfect.
      Based on my calculations 4.2 liters/minute at 50 PSI will produce 2.1 LMP per cylinder.
      Since the flashback arrestor has a diameter of 1/4", so the max flow of gas at 50 PSI is about 2.1 but your gonna need one per cylinder, and lawnmower engines usually have 2.
      TDLR: 4.2 liters/minute at 50 PSI will produce 2.1 LMP per cylinder. You should shoot for a gas flow of 5 LMP though to be safe.

    • @AirGunPoland
      @AirGunPoland ปีที่แล้ว +1

      @@zephyrtolliver4113 Hello, if I understood well, you need 6LPM of HHO for a 7kM motor elec generator. Am I right?

    • @zephyrtolliver4113
      @zephyrtolliver4113 ปีที่แล้ว +1

      @@AirGunPoland I beleive so. Those calculations were based off of this particular 2 cylinder lawnmower engine. 6LPM would take a lot of power, so if you're planning on powering the HHO generator with the electricity from the electric generator, while it should work, don't expect to have much extra power in reserve.

  • @seungbumlee2647
    @seungbumlee2647 2 ปีที่แล้ว +1

    This is perfect equation i needed

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว +1

      glad you liked the video.

  • @ghettocowboy993
    @ghettocowboy993 ปีที่แล้ว +1

    100 percent.... Your check valve needs to be closest to where source of flame is

  • @javiercordoba5543
    @javiercordoba5543 11 หลายเดือนก่อน +2

    I wonder if the timing of the spark can be advanced to after top dead center to prevent flash back, due to the nature of the way HHO burns

    • @Hydrogenguys
      @Hydrogenguys  11 หลายเดือนก่อน +1

      Hi. Thankyou for the comment.
      The timing should be retarded to Top dead centre for safe operation, but to get the most out of the fuel I found that timing can be just before top dead centre, but if you go to far then piston slap can occur.
      Hope this helps

    • @joeyduncan5804
      @joeyduncan5804 11 หลายเดือนก่อน

      So the engines retarded..a few degrees for best efficiency 😅

  • @plasmahawk3693
    @plasmahawk3693 2 ปีที่แล้ว

    Thank you that was what I needed and I'll build a flashback arestr for my generator and that's one way to check if it back fiers.

  • @ukirfan
    @ukirfan 3 ปีที่แล้ว +2

    why is it easy to get distracted with Nox emissions. when the advantage of hydrogen is that the IC engine needs to be redesigned , it should not be air breathing ,
    1. you can remove the inlet valve as HHO mixture already contains proportionate hydrogen and oxygen mixture 2:1 as a provision through fuel injectors or carburetors (whichever is efficient for ignition)
    2. with only a exhaust valve meaning less complexity and wear and tear of valves is reduced by half .
    3. for lean or rich fuel mixture ratios - the HHO generator using electronically calculated ratios with a minimal buffer storage of oxygen in isolated chambers.
    (probably modifying fuel injectors to create HHO truly at the last mile or on-demand. )
    with fuel injectors based hho production just like inkjet i believe the you get nascent hydrogen and , nascent oxygen.

  • @paulcole1171
    @paulcole1171 2 ปีที่แล้ว +1

    Have you tried using a small car LPG gas regulator because it worked for me but as you have already noticed that the HHO unit does not produce enough pressure and gas to keep the engine running if we can work that out it would run.

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว

      yes LPG carb does work but for pure hydrgen only, we used a LPG carburettor in one of our other videos.
      using a LPG carb for HHO didnt work so well for us.

  • @troytron7562
    @troytron7562 ปีที่แล้ว +1

    You need a 2-stroke engine two separate intakes and a small exhaust
    One for hydrogen, one for oxygen
    Pressurized h and o
    Run
    Watch HP
    This needs to be developed

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว +1

      Sounds like an interesting idea!
      Thankyou for sharing.

  • @Atimar01
    @Atimar01 5 หลายเดือนก่อน

    did you realise youre actually running an implosion engine in this setup ?
    the pre-ignition in these engines is usually hard set on several deg before tdc
    pure HHO implodes
    so when the HHO enters the cylinder, it has a "high" volume.
    when ignited, HHO converts back to water
    water has 1/1800th the volume of HHO and thus you het a vacuum at several deg before TDC ....
    its strong enough to make the engine run :)

  • @pistonwhisperer
    @pistonwhisperer 2 ปีที่แล้ว +1

    Any advice for non asperated diesal engines trying to reduce fuel consumption by adding hho to the airintake
    Ta very much

  • @johnmccabe4596
    @johnmccabe4596 13 วันที่ผ่านมา +1

    Three problems to fix , more vavle lash = less overlap , retard timing to before top dead center, or leave timing alone and add co2 too slow the burn .

  • @joemason9187
    @joemason9187 2 ปีที่แล้ว

    Absolutely great strait forward vid

  • @SunHarvest
    @SunHarvest 7 หลายเดือนก่อน +1

    When obtaining hydrogen from hydrolysis for energy storage and to run an engine at a later time to generate electricity, would you store is as HHO or Hydrogen?

    • @Hydrogenguys
      @Hydrogenguys  7 หลายเดือนก่อน

      I would recommend pure hydrogen gas, it’s harder to get but is safer.

  • @TheodoreAndor
    @TheodoreAndor ปีที่แล้ว

    What about choke 100% and feed gas into fuel line that should be about the same thing? The other thing i was planning is the HHO bubbles through bottle of gasoline?

    • @brenohighland1168
      @brenohighland1168 7 หลายเดือนก่อน

      run your hho line into the fuel feed hose is looking for trouble -carby bowl willfill up with hho and will ignite blowing the carby off the engine

  • @PraveenUnnithan
    @PraveenUnnithan ปีที่แล้ว +1

    Hi,
    Can you tell me what kinda arrestor did you use? Can we use acetylene flashback arrestor too?

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว

      Some Acetylene ones say they are compatible with hydrogen up to 3bar so don’t see why you couldn’t use them,

  • @tnunn3023
    @tnunn3023 3 ปีที่แล้ว +2

    Just use steel wool in a fuelfilter as arrestor

    • @Hydrogenguys
      @Hydrogenguys  3 ปีที่แล้ว +5

      I'm sure you could, but makes more sense to use an actual flashback arrestor for safety.

  • @danzokenzo8017
    @danzokenzo8017 8 หลายเดือนก่อน +1

    do you think you could create the engine in a vacuum reducing noise?

    • @Hydrogenguys
      @Hydrogenguys  7 หลายเดือนก่อน

      It would operate fine in a vacuum as the oxygen is present in the fuel.

    • @Hydrogenguys
      @Hydrogenguys  7 หลายเดือนก่อน

      It would operate fine in a vacuum as the oxygen is present in the fuel.

  • @practicaltesting
    @practicaltesting 3 ปีที่แล้ว +1

    Does not it create a vacuum at first start, (if you block air intake) that prevents it from turning over at the pull of the pull start?

    • @Hydrogenguys
      @Hydrogenguys  3 ปีที่แล้ว

      I'm sure it would do. I tested the method and it did work, and was very easy to turn over by the pull cord still.

  • @harissohail-lh7
    @harissohail-lh7 5 หลายเดือนก่อน

    can you run 100% on HHO gas? May be if you know your create HHO kit according to Car AMPS

  • @Volkyno
    @Volkyno 2 ปีที่แล้ว +1

    I was thinking of such a project.
    One in which HHO was produced by photovoltaic panels via electrolysis, then the HHO to be used by power generator converted to burn hydrogen like yours.
    And replacing a battery storage with a HHO balloon.
    Will that work fine?

    • @Hydrogenguys
      @Hydrogenguys  2 ปีที่แล้ว +2

      Personally I would use pure hydrogen not hho gas.
      So like you said, you could use solar to make electricity to make pure hydrogen, then store the pure hydrogen safely in a gas tank (you shouldn't store hho gas). Then run the generator on the hydrogen when needed.

    • @Volkyno
      @Volkyno 2 ปีที่แล้ว

      @@Hydrogenguys yes this sound logical. Thank you and good luck with your project. 🤝🏻

  • @blinkboys21
    @blinkboys21 หลายเดือนก่อน

    How long can it run straight?

  • @Yogo73731
    @Yogo73731 3 ปีที่แล้ว +1

    Yes

  • @vahagnmelikyan2906
    @vahagnmelikyan2906 ปีที่แล้ว

    Would it work in car if injected in air intake mixed with gasoline? Do I have to mess with ecu sensors?

  • @tnunn3023
    @tnunn3023 3 ปีที่แล้ว +1

    Is yours blocked? For that to work, your HHO production has to volumetrically match the cylinder volume, right? Maybe match it as propane air/fuel ratio..

    • @Hydrogenguys
      @Hydrogenguys  3 ปีที่แล้ว +1

      Good point, but the engine will run with a small amount off HHO at a time, but yes you will need to make alot of gas per minute, for example a 200cc Engine will need at least 8 to 10lpm of gas.
      If you mix it with air from the atmosphere the gas will become less powerful.

    • @peterjeffries8298
      @peterjeffries8298 2 ปีที่แล้ว

      Hydrogen tends to run very lean. JCB found that an issue with their diesels. But they got it working perfectly 👍

  • @devenzope
    @devenzope 2 ปีที่แล้ว +2

    Can we use hydrogen in petrol car?

    • @Volkyno
      @Volkyno 2 ปีที่แล้ว

      The modern cars have a lot of sensors which makes the use of HHO pretty challenging.

  • @ne1cup
    @ne1cup 2 ปีที่แล้ว

    adding more air to the burn helps, so you got that part wrong , 0ther wise it would be a closed system

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว +1

      HHO is made up from 'Hydrgen, Hydrogen and Oxygen' this is the perfect ratio for combustion, therfore no extra air is needed.

  • @protein.planet-uae
    @protein.planet-uae 3 ปีที่แล้ว

    Nice job..love to see..can we use HHO from a tank instead of ballon so it runs longer ??

    • @TrueHelpTV
      @TrueHelpTV 3 ปีที่แล้ว +7

      the problem im discovering with bottling hho is that pressure will just re condense back into water. so what you need is to configure a dry fuel cell to separate its manufacture of hydrogen and oxygen, then you can bottle either separately. I think the highest psi I've heard of before weird stuff starts to happen to the hydrogen is around 2000-2800psi. anything past that and you're entering the realm of liquid hydrogen and that requires liquid nitrogen to keep cool otherwise as it heats back up in the bottle at 3000psi, that pressure will continue to increase and now you have a pipe bomb. So just separate the hho into h2 and oxygen and then you can use valves to remix at the combustion source. make sure you have flashback arrestors, and somethign to dial down the released gas, because hydrogen can self ignite from its own friction generated from leaving the bottle. The dream is to make a system where you can generate your own gas at home (maybe solar powered), and bottle it yourself. This lets us circumnavigate the need for $10k batteries or expensive gasoline. NEVER USE CO2 BOTTLES TO STORE HYDROGREN OR OXYGEN>>> CO2 BOTTLES ARE RECYCLED/AGED BOTTLES ON THEIR LAST LEG OF LIFE> NOT SAFE>

    • @protein.planet-uae
      @protein.planet-uae 3 ปีที่แล้ว

      @@TrueHelpTV if we use a compresser to bottle it up so it can store in a tank with enough PSI?

    • @TrueHelpTV
      @TrueHelpTV 3 ปีที่แล้ว

      @@protein.planet-uae i would assume that the pressure would cause the h2 and O to recombine into h2o=water.. you have to separate them. plus i've always heard because they do different stuff at different pressures, you can have spontaneous combustion if you pressurize hho. so yeah.. split your hydrogen and oxygen production before bottling or you're gonna have a bad time seems to be the general consensus.. don't go past like 2800psi either.. and don't use recycled co2 bottles.

  • @andredupont
    @andredupont 8 หลายเดือนก่อน +1

    Where do you get the flash back arrestor in the U.S.

    • @Hydrogenguys
      @Hydrogenguys  7 หลายเดือนก่อน

      Feel free to contact me on the 'Hydrogen Guys' Facebook page for the Hydrogen Flashback Arrestor used in this video
      facebook.com/hydrogenguys

  • @manikandarajan7928
    @manikandarajan7928 4 ปีที่แล้ว +1

    Good content....

  • @NoName-gb9gp
    @NoName-gb9gp 8 หลายเดือนก่อน +1

    Inject it directly into cylinder

  • @bktechnologies88
    @bktechnologies88 2 ปีที่แล้ว +1

    You should put a link

  • @farukhr
    @farukhr 2 ปีที่แล้ว

    Did you run on pure Hydrogen as well?

  • @wook4757
    @wook4757 6 หลายเดือนก่อน +1

    Wouldn't straight hho melt the engine

    • @Hydrogenguys
      @Hydrogenguys  6 หลายเดือนก่อน

      It ran fine on HHO, check out the short video of it running, it just drank a lot of fuel

  • @jpferreira8936
    @jpferreira8936 4 หลายเดือนก่อน

    Where do you get the backflash thingie?

    • @Hydrogenguys
      @Hydrogenguys  4 หลายเดือนก่อน

      You can find them online, or you can message me on the ‘hydrogen guy’s’ facebook page where you can buy one from me to support the channel.

  • @mohammadhashemi1771
    @mohammadhashemi1771 3 ปีที่แล้ว

    Good content

  • @bktechnologies88
    @bktechnologies88 2 ปีที่แล้ว +1

    Guy where can I buy the no return valve

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว

      you can find the HHO valve online, 'HHO flash back arrestor'

  • @bmohanta6701
    @bmohanta6701 ปีที่แล้ว +1

    Vary good

  • @brad2548
    @brad2548 2 ปีที่แล้ว

    Why are other videos showing the methods they are

  • @Keegsbruh413
    @Keegsbruh413 4 หลายเดือนก่อน

    How would I add oil if I wanted to run a 2 stroke?

    • @Hydrogenguys
      @Hydrogenguys  4 หลายเดือนก่อน

      HHO on a 2 stroke would be very difficult, as any flashbacks from the combustion chamber would into the crankcase igniting the HHO in there too, not impossible though.

  • @parakhgavel981
    @parakhgavel981 3 ปีที่แล้ว

    Thanks

  • @michaelfixedsys7463
    @michaelfixedsys7463 3 ปีที่แล้ว +1

    I have a question. If I have separate hydrogen and oxygen should I still reduce the air intake?

    • @hamdawgms
      @hamdawgms 3 ปีที่แล้ว

      not if youre just putting hydrogen in.

  • @faizanaslam8687
    @faizanaslam8687 2 ปีที่แล้ว +1

    Are you talking about running a engine entirely on hho kit

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว

      yes, but the HHO kit would have to make alot of gas to keep this engine running

  • @timjonson5763
    @timjonson5763 8 หลายเดือนก่อน

    You need large production HHO , with out resonance it is impossible. You need more learn Nikola Tesla patents, other way you are in Dead End

  • @ibrahimal_oudat7284
    @ibrahimal_oudat7284 3 ปีที่แล้ว

    I want to search for this topic, I want to analyze a thermodynamic calculation of the engine

  • @zachsheffield1325
    @zachsheffield1325 ปีที่แล้ว

    Why not direct inject the HHO?

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว

      You could, that’s would be a lot better too, but more complicated to make, this was just an easy alternative.

  • @martincstee5335
    @martincstee5335 2 ปีที่แล้ว

    I wonder if it is possible to implement this concept on a modern car.

    • @ghettocowboy993
      @ghettocowboy993 ปีที่แล้ว

      Of coarse...

    • @ghettocowboy993
      @ghettocowboy993 ปีที่แล้ว

      You might get some computer error messages and codes screaming at you . But there are ways to correct for this problem

    • @ghettocowboy993
      @ghettocowboy993 ปีที่แล้ว +1

      I suggest you do alot of research first... Hydrogen is one of the safest gases out there but can also be one of the deadliest...

  • @troytron7562
    @troytron7562 ปีที่แล้ว

    Hho mixed is too dangerous
    That's why it needs separation.
    Its all about timing.

  • @sinuemedina2550
    @sinuemedina2550 2 ปีที่แล้ว

    I bought a kit from Labellahho but they are no help at all. Anyone knows it can recommend me a shop in southern California where I can install the kit. I'm have a 2018 Chevy Silverado

  • @PhysicsViolator
    @PhysicsViolator 2 ปีที่แล้ว +1

    You can’t store large quantities of HHO since it’s way too dangerous , I can’t imagine a scuba tank filled with this stuff at 200 psi going off .. that’s worse than a bomb .

    • @Hydrogenguys
      @Hydrogenguys  ปีที่แล้ว

      yes storing HHO gas is very bad. would only ever recommend storing pure hydrgen gas.

  • @brenohighland1168
    @brenohighland1168 7 หลายเดือนก่อน

    problem no 1 hho flash back arrestor --where to find

    • @Hydrogenguys
      @Hydrogenguys  7 หลายเดือนก่อน +1

      This is an old video, but you can get the flashback arrestor from the Facebook page, ‘Hydrogen guys’, the link is in the description. Hope this helps

  • @brenohighland1168
    @brenohighland1168 7 หลายเดือนก่อน

    hho over fuel dont work--forget that idea folks hho or fuel only

    • @Hydrogenguys
      @Hydrogenguys  7 หลายเดือนก่อน

      HHO can be used along side petrol, but this demonstration was showing an engine running purely on HHO gas.

  • @davidsmith6080
    @davidsmith6080 3 ปีที่แล้ว +1

    Dude where's your car running..and no you need 13H to 87O. It can vent to atmosphere if hho hose is not by the carb.yip put your hho into by the butterfly as close as possible.also H can escape a 2mm gap and octane cannot. Dude are you sure an erred your model!!!!!!!

  • @iritantNL
    @iritantNL 2 ปีที่แล้ว

    A little bit over engineered IMHO.. Can just make a metal block for the carburetor hole with a 3/8 8mm quick hose connector..

  • @AzizAkbiyik
    @AzizAkbiyik 3 ปีที่แล้ว +2

    2 hydrogen and 1 oxygen alone, so a lot of hydrogen gas is needed. More oxygen is needed for economy.

  • @mabihinafff942
    @mabihinafff942 3 ปีที่แล้ว

    فولتارين مسكن جيد يا ترامب

  • @spectrumofreality
    @spectrumofreality หลายเดือนก่อน

    You most certainly do want air to enter in on top of the oxygen produced, about 29.3:1 as in twenty nine point three parts atmospheric air at sea level for every one part hydrogen you are producing and or feeding into the engine as the optimal stoichiometric air fuel ratio is thirty four point three to one. Minus the one part oxygen you are producing per two parts hydrogen of course will give you about twenty nine point four to one. (Air fuel ratio accounts for oxygen being 21 percent of the atmosphere already) This ratio will facilitate a complete burn and give you the most efficiency and potential energy possible.
    You also want to ensure that your apparatus is designed to seperate the oxygen and hydrogen immediately as it is produced to avoid having an explosive mixture of gasses while they can be safely piped separately and recombined at your intake. This will prevent any accidental explosions from happening and ruining your day and or killing you!
    This also prevents the need for a "flashback arrestor" as well as in the absence of oxygen hydrogen will not combust so you do not need to worry about the a flame traveling up the gas line or hose. The most simple design you can produce to accomplish this is building your apparatus in the shape of a uppercase H with the cross bar below the level of your electrolytic solution.
    Also your solution should most certainly not be salt water or you will not be producing Hydrogen and Oxygen you will produce Hydrogen at the cathode and chlorine gas at the anode. Your electrolytic solution should be either sodium or potassium hydroxide or in the very least sodium bicarbonate. Chlorine gas is highly toxic and can kill you.