How an HHO generator works and helps you save gas

An HHO or Brown gas generator is an interesting and often misunderstood technology.
The Brown gas generator uses electrolysis to split water (H2O) into it´s base molecules, 2 hydrogen and 1 oxygen molecule.
This is why it is often referred to as an HHO gas generator.The HHO in itself is not an alternative to gasoline but a additive
to boost the efficiency of the engine. Gasoline engines are unfortunately not burning gasoline to its full potential. See http://en.wikipedia.org/wiki/Engine_efficiency
The average gasoline engine in a car is about 18% to 20% efficient. That leaves a lot of room for improvement and Brown gas is one good way of improving the efficiency. The reason for this is simple, the hydrogen is highly flammable much more so than gasoline so when your engine ignites the hydrogen the explosion ignites the gasoline with much better results (cleaner, less waste and fewer emissions) than it would otherwise have done.

Some basics the burn speed of hydrogen is 0.098 to 0.197 ft/min (3 to 6 cm/min) compared
gasoline´s 0.00656 to 0.0295 ft/min (0.2 to 0.9 cm/min).

The hydrogen explosion is so fast that it fills the combustion cylinder at least 3 times faster then the gasoline explosion and subsequent ignites the gasoline from all directions  (it is like putting flue on a fire), instead of just a spark in one end of the combustion cylinder, and we would like to do that because the gasoline only has a short time in the combustion cylinder and if its not fully burnt in that short amount of time then it just goes out the exhaust and is lost.It is also preferable to ignite all of the gasoline when it is under maximum compression in combustion cylinder to get the maximum amount of energy out of it (this is a small time window),whonce the piston starts going down the energy transfer from the explosion to the engine becomes less efficient.

The hydrogen´s higher burn temperature and explosive force is such that it cleans the soot that collects in the engine (it is like having the engine consistent maintains) and with a cleaner engine you get better mileage and fewer oil changes .

Step 1: Tools and main components


Glue gun
Drill and bits
Metal saw
Soldering iron
wire crimp
wire cutters


HHO Generator
Pulse width modulator (PWM)
Electronic Fuel Injection Enhancer (EFIE)
Electric wires
Air connector
On/Off switch
Cable connectors
One way air valve
Piece of sheet metal
Peace of rubber

<p>i have two sets of plates in container, one is taking 7 volts and 14.5 amp, where as second one is taking 8 volts and 9 amps. can any one of them be tried to run electric generator of 1 kw capacity?</p>
<p>how much amp and volts should be needed to run 1 kw electric power generator?</p>
<p>don't you only want to add the hydrogen to the gas and not the oxygen. i think if you just add the HHO as is, in it's perfect ratio the propensity it will take is to just reform a H20 molecule and not in acting as a catalyst or fuel accelerant of any kind. There should be ample oxygen in the air mixed with the gas to combust the H2 and ideally it doesn't just form a steam molecule that you paid to separate in your generator and reform in your engine. If you hydrogenate the gasoline, what occurs? I'm sure they've been done on saturating gas with hydrogen and oxygen separately and i'm certain they've been done trying to add peroxides. For God's sake don't try to add peroxides to any fuel to increase its efficiency, just ask a submariner.</p>
<p>Nice smart hydrogen generator i also making like this and i run my car and motorbike</p><p>http://www.instructables.com/id/How-to-Make-Hydrogen-Gas-and-Run-a-Car/</p>
I'm pretty sure the additional electricity your alternator has to provide to generate the hydrogen outweighs the additional efficiency provided (a.k.a. perpetual motion). Throw some large solar panels on the top of your car/truck to power the HHO generator exclusively and then you might have something.
Yeah he's got a rather poorly designed pseudo electric car. Forget the fact that even with a pretty good energy source thees devices can't produce that much gas/minute. producing the same amount of force from thees it take 3 times the mass of water then gasoline. You rarely see one of thees devices with more than a few gallons of water. And again is you have the perfect device at the theoretical best efficiency 94% (best devices ever made are in the range of 70%, I've not tested this device but a device in a lab under perfect conditions are working at 70% this ain't even close.)
For every gallon of water you can get 4707 litres of H2, thats at atmospheric pressure and freezing point. So, it would seem on the face of it that H2 production by electrolysis is worthwhile. I agree the main problem is producing enough to properly suppliment your current fuel, but this talk of inefficiencies and costing more to produce than it delivers is hogwash. The weight of an H2 generator is under 10kg fully loaded. The H2 generated will improve combustion, reduce emmissions and should save money long term. Thats 3 positive benefits. &quot;There are none so blind as those who will not see&quot;
<p>On an enegy level, there is no difference, no improvement.. but on the COST side, yes there could be a lot on money saved.. water cost a lot less then gasoline (unless you drink Perrier) but tap water in here is cheap, real cheap and if it can help some fuel.. that is where someone will save.. But not on the energy ratio created.</p>
<p>If the electrolysis of the water and combustion of the brown gas were 100% efficient (which physics tells us they aren't) there would be no net increase in energy produced by the engine. So no burning brown gas produced by electrolysis is more costly. IE it is infinitely more costly. You are wasting money to do nothing. But as said above that is if the system is 100% efficient, it only get's worse when we start talking about 30% efficient engines and 40% efficient alternators and a electrolysis device with no known measure.</p>
<p>Flat out no it doesn't. Messing with the O2 sensor changes compression increases pollution and damages the vehicle. Adding the trickle of brown gas does just about nothing either way. Don't trust me. Look up tests where the system is turned on and off without messing with the O2 censor. Hell do it yourself. Efficiency increases when the brown gas generator is off.</p>
3 ways to easily bypass the O2 sensors, remove them, remove the cat(s or fool the ecu into thinking your not running too lean. If you take off the cat(s) you gain a much free'r flowing exhaust. If you then are able to produce sufficient hydrogen to effect efficient combustion then you will have a cleaner burning more efficient SI/CI engine. Just bypassing or removing the O2 sensors wont have a detrimental effect on the engine, it will have a detrimental effect on the cat(s), so best to remove them.
<strong>That's </strong>the spirit!
You couldn't be more wrong. There is a lot of unused power generated by the alternator that simply gets sent to ground once 14.4v is achieved with the use of a properly tuned system one can make use of the otherwise &quot;waste energy&quot; for hho creation. Additional power will be created by the more complete burn of the already existing fuel in the combustion chamber. The use of a pwm (pulse with modulator) is ideal for such tuning. EFIE is used to resist the signal coming from the oxygen sensor. The oxygen sensor sees the additional oxygen (the &quot;o&quot; in your hho) and reacts by asking for more fuel.
<p>there is not waste energy, there is more energy potential. And alternator or gererator use mecanical energy to make electrical energy, the more power you ask at the generetor, the more mecanical energy it need to make it. Think of a small dynamo you had on your bike. When the light where off the dynamo was easy to turn and all was well, not turn the light on, and you had to work a lot harder to acheive the same speed.. </p>
<p>You may want to check your theromodynamics again. Every system has waste energy. And as the only energy source is the gassoline that's a problem.</p>
<p>Gio, Please learn how an alternator works as it charges the battery.</p><p>A lot of energy goes to waste when the alternator change the engines mechanical energy to electrical energy [used for electrolysis] and no electricity is <em>grounded</em> when the battery is fully charged.</p>
Actually, modern day alternators are designed in such a way with such thick windings that the average auto owner will never use more than 50% or 60% of the what the alternator is capable of producing. That includes when you have all your lights on and every accessory in the vehicle going simultaneously. Auto makers have put over sized alternators in their vehicles(at least the domestics) since the mid to late 80s. Which consequently is about when they started EFI (Electronic Fuel Injection) as a standard, which an HHO application would require to have any effect anyway. The alternators used in modern vehicle's use electro magnets and voltage regulators in order to be able to restrain the alternators way back as to not over charge the system. Your HHO generator would have to be putting quite a draw to really have much, if any, effect on your engine or fuel consumption. <br><br>Long and short, your analysis isn't INCORRECT entirely. There are clearly some variables to be considered in each case. However your line of thinking is more in line with the generators they used to put in vehicles in the 60s and earlier, which had permanent magnets and were affected by every extra voltage draw as opposed to the alternators of today with electro magnets. <br><br>Please excuse my rant, I'm by far no chemical expert, I'm just starting my research on HHO generators in automotive applications. I do however know cars and quite a bit about generators and building them, so I just wanted to throw my 2-cents in. Thanks, this rant was fun!
<p>Darkstar is correct, even though an alternator is capable of producing more than what the vehicle needs to run the electronics. It is only generating what is required. There isn't 100 amps of current being generated and simply waiting to get used. As you increase energy demands the magnetic field inside the alternator gets stronger, the engine uses more fuel to overcome the stronger field and in return outputs more energy to meet the demands of the system. The question at hand is, if you have a system that is running at 30A and you add an hho generator that wants and additional 10A. How much more fuel do you have to burn to overcome the additonal load? And how does that compare to the efficiency the hho adds to the combustion process?</p>
<p>Seems to me that no one knows how alternators work! An alternator deliver only what is asked by the complete electrical system.</p>
<p>I do however know cars and quite a bit about generators and building <br>them, so I just wanted to throw my 2-cents in. Thanks, this rant was <br>fun! ........To control voltage and current output of all car generators and alternators, the current flow through the field/rotor electro magnate is altered. No permanent magnets is/was used. Some residual magnetism of the generator field coil core is there to start a generator working [They must be polarized correctly]</p><p>A medium sized vehicle will use 1 liter more fuel in an 8 hour day driving with lights on on a smooth level surface at 60 mph with no wind blowing.....Think how much this system will waste.....Better just feed some water to the intake when the engine is hot and stop adding water 30 minutes before the engine is stopped. As very old motor mechanic and motor- teacher I advise that you stop wasting your time on this brown gas system.</p>
So u say that electrolysis of water takes up more energy than hydrogen explosions?<br>Hydrogen burning=Chemical energy harvested<br>Hydrogen separating=bonding energy destroyed<br>I know u are applying conservation of energy.<br>But the energy liberated after burning H was not the energy provided by electrolysis.It is chemical energy,it was already there.
Bond energy IS chemical energy. Breaking the bonds in water molecules requires exactly the same amount as is released when those same bonds form in an explosion. wikipedia enthalpy if you would like to know more.<br>The problem is though, that alternators are not 100% efficient, and nor is the electrolysis process, due to electrical resistance. Therefore, it takes more energy to split the water you get back from the combustion.<br>HOWEVER<br>To my understanding, correct me if I'm wrong, but using HHO as a fuel additive isn't as simple as getting only as much energy as the HHO provides, but I think it actually improves the efficiency of the petrol combustion, so you would end up getting more out of your engine despite working the alternator extra hard.<br>Can someone confirm this?
During electrolysis,H20 separates,so molecular bonds are broken.<br>during HYRDROGEN explosion,I don't know the actual REACTION EQUATION.So I maybe wrong there.But understanding the amount of energy evolved in a hydrogen gas explosion I don't really think it is supplied by the battery.
<p>Petrol consists of many different chains of molecules which ignite at different temperatures thus is burn very fast but it does not explode! If your engine detonates, you hear a pinking sound [part of the fuel mixture explodes]. This is bad for the engine.</p>
Sorry I didn't really understand your response, but am I right in thinking you meant to say:<br> &quot;Electrolysis supplies energy to breaks molecular bonds. Hydrogen gas explosions release a lot of&nbsp;energy, which was not originally put in by the battery&quot;.<br> If that's what you meant, then this is my reply:<br> <br> The equation for electrolysis of water is as follows<br> 2H<sub>2</sub>O&nbsp;+ energy =&gt; 2H<sub>2</sub> + O<sub>2</sub><br> <br> The equation for combustion of hydrogen is thus<br> 2H<sub>2</sub> + O<sub>2</sub> =&gt; 2H<sub>2</sub>O + energy<br> <br> It's the exact reverse.&nbsp;Hydrolysis&nbsp;is just a backwards explosion.<br> If you don't believe me there, here's something to ponder...<br> <br> The first law of thermodynamics states that &quot;energy can be neither created nor destroyed&quot;<br> This means that the total energy of the system, in all its forms, must be equal both before and after a reaction. So...<br> If the system has x amount of energy, provided by the battery to&nbsp;electrolyse&nbsp;the water, where does the extra energy come from which is released by the hydrogen explosion?<br> The energy has to be in there originally, to be released, so according to your explanation, if you electrolyse water, then combust the hydrogen, electrolyse that same water and repeat 100 times, then the hydrogen would eventually run out of energy because electrolysis doesn't put back in as much as combustion releases...<br>
All you say is right,provided the explosion reaction reaction of hydrogen is the same as you have written.I don't know,though that's logically right(the reaction).<br>So,yes if thats right then the combustion helps in the fuel burning properly.<br>:P Thanks :P
<p>Yes... I have tried a locally made fuel saving device which produces HHO, has given me an additional mileage of 30% in city and more than 50% on long drive in my 2 wheeler. I am from Mumbai, India.</p>
<p>can you share your schematics for my 2 wheeler Fi automatic scooter... 125cc...</p>
<p>Right on the head for the solar panels! Since the govenrment charges us for the water, maybe someday they might charge us for the solar rays we harvest! LOL!</p>
<p>Hi friends any one have a 2D diagram of diesel engine with hho kit</p>
To all the people saying stuff about your alternator having to work harder, and that this is all a gimmick basically, here's the deal; HHO generators improve the very inefficient gasoline air/fuel mixture via the very volatile nature of hydrogen, through electrolysis. It doesn't pump out pure hydrogen at all, it's a mixture of hydrogen and oxygen (both of which will help the air/fuel mixture ignite quicker and burn more completely.. Stay with me now. The PWM is used to pulse the electricity at a set frequency (which keeps the HHO production up, heat and waste down) and keep the amp drain down around 1 or so amps (there goes your alternator complaint :P). Charging your phone uses about the same amperage. <br>Now.. for the EFIE, it's a bought or built device, just like the PWM, you'll have about 20 bucks into building it, and this thing basically offsets the reading coming from your oxygen sensor. Now what that will do is make your car run lean, and be happy about it. This is the main misconception about supplemental HHO saving you gas mileage! The EFIE leans your fuel reading in your tailpipe via the oxygen sensor, so that the ADDED OXYGEN --FROM-- THE HHO MIXTURE DOESNT TELL THE ECU (via the O2 sensor) TO ADD MORE FUEL. The oxygen sensor (without the EFIE) WILL TELL the ECU that it's not fully burning the air/fuel mixture because it's sensing the oxygen (get it, oxygen ... sensor...) <br>Thus.. decreasing your gas mileage. Probably..<br>By the way, just tricking your computer to lean out by jumping your Intake Air Temperature sensor (with an ohm resistor, easy) WILL NOT WORK because, you guessed it, the Oxygen Sensor TRUMPS the IAT as the O2 is the final step in correcting your air/fuel ratio per your car's ECU to meet strict emissions laws, general performance and longevity of the motor.<br>Fun fact!: HHO enriched air/fuel mixture done correctly will essentially make your car almost ZERO EMISSIONS VEHICLE! Tested and proven, if yours is set up to produce enough HHO per liter of displacement, go get tested and get that tax credit! <br>If it's still available :P<br>And hey guys, perpetual motion machines have nothing to do with an engine that's about 25 percent efficient! Its about lowering friction, rotating mass, reducing restrictions on the intake and exhaust flow, and MOST OF ALL!! - Volumetric Efficiency!<br>
<p>&quot;Accepted&quot; ideas of fuel and energy - not to mention commonly believed &quot;laws&quot; of physics - are based on a physical model of reality that doesn't exist. And the bizarre thing about people's beliefs IN such things is that they KNOW that. They KNOW they don't KNOW and they fight ANYway. They compartmentalize information as if there are &quot;worlds like that&quot; and &quot;worlds like this&quot; that have nothing to do with one another. They believe that, sub-atomically, things happen randomly and chaotically despite the fact that trillions of mammals have hearts and eyes and not just for random moments of things falling into position and circling one another - chaos can't DO that. </p><p>Your own body transmutes a huge variety of atomic structures into all kinds of OTHER atomic structures. And it does that at a temperature of around 98.6 degrees, all day, EVERYday. </p><p>Discoveries aren't made about things we know. When we &quot;know&quot; something, we've STOPPED exploring it - we've killed our potential for discovery. We've stopped considering it and labeled all of the &quot;exceptions to the rules&quot; as anomalies and declared what we think we know is &quot;right&quot;, but it isn't. IT CANNOT BE. We cannot see, smell, feel, hear or taste enough to be &quot;right&quot;. It isn't possible. ALL we can do is explore and TO explore and to make DISCOVERIES requires a MORATORIUM on &quot;knowledge&quot;.</p><p>People crack me up. They fight about things they don't believe and they trash one another for brownie points - in hopes they will be perceived as &quot;knowing&quot; - as if &quot;knowing&quot; is a GOOD thing - as if it's logical, ROFL! It's insane!</p><p>If you're an explorer...and this is a piece of advice so, take it or not, it's your choice...if you're an explorer, then logic says that there is zero reason to give critics even one moment of your attention. ZERO. They're irrelevant. There is no need to try to explain anything to them or convince them, there is no need to answer to them and there is no need to worry about what they think because what &quot;knowers&quot; think is of no USE to an explorer, whatsoever, so go forth and explore and discover and try to avoid blowing up the garage!</p>
<strong>That's </strong>the spirit!
on some other comments below. Does it take alot of energy to release hydrogen? no. as little as 6vdc and a few amps will release hydrogen and oxygen. Now to correct another its not called hho for fun. Its hydrogen x2 and one oxygen, or O. not H2 and O2. If it were that would be hydrogen peroxide. LOL<br><br>And as far as energy goes. Its in what were releasing. Hydrogen is very powerful. And its THE most abundant fuel source. So it make perfect sense to use it. as our methods to extract it become more efficient its use will become more prevalent. <br>The reason I would presume its not being used as a primary fuel source yet, it no one would make money off of it. honestly ask your self, would would profit from it, and you have your answer as to why its not being researched!
The reason that it isn't used as a primary fuel source is that it isn't a fuel source at all. A fuel is something that takes less energy to create than it yields. <br><br>Gasoline passes that test easily. Hydrogen does not.
Solar and wind are free. Furthermore there is plenty of power sent straight to ground on all cars with proper charge systems. It makes perfect sense to make use of the otherwise &quot;waste energy&quot; created by your alternator.
According to Webster, a fuel is <br>&quot;a material used to produce heat or power by burning&quot; <br> <br>If something yielded more energy than it took to create, that would break the laws of physics (namely the first law of thermodynamics). <br> <br>The thing with fossil fuels is, the ground work was done millions of years ago, but the energy was still put in there. It just takes us less energy to EXTRACT it from the ground. We get about 3 times more energy than we put in for petrol. <br> <br>With hydrogen as a fuel, you have to create it, not just extract it, so you have to put in the initial energy.
Thank you for doing such a fine job of proving my point. <br> <br>BTW, I'm pretty sure that's the second law of thermodynamics.
ha interesting, looks like it breaks a couple of laws. <br> <br>I was taking it as &quot;energy can be neither created nor destroyed&quot; therefore, where did the extra energy come from in the reaction, if you didn't create any. <br> <br>But it also works with &quot;the entropy of a system always increases&quot; i.e. you can't end up with more energy in a system than you started with. <br> <br>Either way, perpetual motion is impossible (though that's on the list of things to do)
oh, wait! I'm not proving your point i'm trying to point out flaws in your argument! XD <br> <br>Your definition of 'fuel' breaks both those laws. So hydrogen is a fuel because it fits under webster's definition of 'something used to produce heat or power by burning' <br> <br>And it's not going to cause bad things to our planet if produced using green electricity because all its energy comes from energy that is here now. Using fossil fuels get energy that was taken out of our system millions of years ago and releases it, warming our system and increasing entropy
Baloney! My definition of &quot;fuel&quot; breaks NEITHER law. For instance, oil takes less energy to extract from the ground than the oil produces when you consume it. How it got to be that way, and how that is different than hydrogen &quot;fuel&quot;, is irrelevant. <br> <br>Your &quot;green energy&quot; malarkey is simply an ad hoc logical fallacy.
Well then you need to change your terminology. You said petrol takes less energy to CREATE than it produces. That is physically impossible. Taking less energy to EXTRACT is a completely different matter, and quite an important point in this argument, so please be careful which words you use. Especially if you're trying to say 'create' and 'extract' are synonyms, which they're not. <br> <br>'How it got to be that way' is extremely relevant. It is the whole basis of the green fuel vs. fossil fuel argument. How it got to be that way: <br>It took ~60-100 years of sunlight to grow a tree or animal (feeding off trees), then it took millions of years and a whole lot of geological pressure to turn that into oil. That is a huge amount of energy stored in the oil, and a huge amount of energy which has been locked away, out of our system, for a very long time. During which time the Earth developed to live without it. When you release all that energy back into the system in 50-100 years, the system can't take it and you screw things up. Hydrogen fuel is created on the spot, using energy (hopefully from the sun or wind or water) which is in the system now. It is used again days or years (but not millennia) later, releasing the energy back into the system. <br> <br>Please elaborate. Don't just say &quot;green energy is a logical fallacy&quot;, please give some examples and counter arguments.
error in the text about the PWM, I meant EEIE.
<p>So you make hydrogen from battery power which is generated by the alternator driven by your motor which is supplied by fuel? So you use more fuel to add some hydrogen to the fuel?</p>
No the car is started off of regular fuel the battery is already receiving enough energy from the alternator so the energy the energy that's being robbed is barely noticeable when the pressure in the hydrogen cell gets high enough the hydrogen fuel goes in through the air intake so when the engine opens to basically inhale air it pulls some hydrogen in too so the car isn't trying to do anything more than it was already doing the difference is is that the car won't have to use as much fuel in the combustion chamber to move the piston down it will use a smaller amount to receive the same input so imagine if this is how it was broken down.<br><br>Only an example not real values from an experiment<br>(1unit of gas + 1 unit of oxygen + spark= 2 units of power <br><br>With the hydrogen cell it'll be like this <br><br>1/2 unit of gas + 1/2 unit of hydrogen + 1 unit of oxygen + spark= 2 units of power)<br><br>In the end you received the same output power with less fuel input and we all know it's cheaper to put water in the tank than it'd be to put gas so the savings would be outstanding. Use this in your daily driver to save gas.<br>
<p>Tip: Attach water hose because it will consume some</p>
<p>I think some of the arguments of how HHO cannot work have <br>some validity, however, in real life, are not exactly accurate, let me try to <br>explain.</p><p>The argument I have the most trouble reconciling is the <br>power consumption of the HHO generator. Let's <br>use headlights as an example; my 79 Dodge has 4 Halogen headlights if I use the <br>high beams (65 watts each) It should be pulling about 20 amps. In order to keep the math simple let&rsquo;s call <br>it 60 watts each 60x4/12=20.I have <br>never heard anyone complain about their mileage dropping because they had their <br>headlights on. Have you?</p><p>Most of the demonstrations for HHO generators are running at <br>less than 10 amps and are producing more than a liter per minute.For ease of math let&rsquo;s say it&rsquo;s a quart. A quart is slightly less than as liter.</p><p>Another argument I have some problems with is that you <br>cannot produce enough HHO for it to improve fuel economy. For a car getting 40 miles per gallon at 60 <br>miles an hour (1 mile per minute), it is using 1/40 of a gallon of gas per <br>minute (or 1/10th of a quart).If we are pumping in a whole quart of a highly volatile fuel into the <br>engine, I could see how it could help with mileage. My understanding is that HHO has about 3.9 <br>times the energy as the same amount of gas.</p><p>The O2 sensor is an easy one, let&rsquo;s experiment on carbureted <br>vehicles. This also allows us to retard <br>the timing to accommodate the quicker burn rate of the HHO.</p><p>Yes I look at things differently, I&rsquo;m probably nuts, and don&rsquo;t <br>know if my logic is reasonable or not. I <br>don&rsquo;t know if it will work, but that doesn&rsquo;t mean we shouldn&rsquo;t try. A friend of mine frequently says &ldquo;people who <br>say it can&rsquo;t be done, should get out of the way of those who are actually doing <br>it&rdquo;.</p>

About This Instructable




More by Electrified:How to assemble a HHO Generator and why it works
Add instructable to: