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Author Topic: Forced Induction Engines and HHO  (Read 6629 times)

Offline boostmr2

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Forced Induction Engines and HHO
« on: March 24, 2008, 06:49:05 AM »
I want to turn my 1991 Turbocharged Toyota MR2 into an HHO hybrid monster.  I know many cars run on HHO gas right now, and turbo deisel vehicles run on HHO as well, but I have yet to see an example of a gas-turbo running with HHO in a hybrid manner.

My main concern for this application is recondsensing of the HHO gas.  I understand that if the gas cools or becomes compressed it can turn back into liquid H20.  This can and will destroy any engine.

Turbo Deisels are running this setup anyways without any issues, so I am wondering if this will be a problem at all.  If the HHO gas stays in gas form in a 10-20 psi environment, I can only see it having positive effects.  Better gas milage, performance increase, cleaner burning, and will keep the motor in good condition with less wear.

I think the best way is to pump the HHO gas into the intake just before the compressor of the turbo.  It will mix with air, then get compressed in the intake system (ie intercooler through tot he throttle body).

Not much different from a Naturally aspirated setup, just the worry of the boost pressure (mine runs at 11psi) causing water or condensation to form.

ANy ideas?

Offline Chaoticside

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Re: Forced Induction Engines and HHO
« Reply #1 on: March 26, 2008, 06:30:39 PM »
I'd like hear some answers to this also.  I've got a turbocharged CRX which is running 11psi. 

As far as I understand, in this process you're not creating a water vapor that would condense back to form liquid water, but rather splitting water into seperate elements then when it is burned it recombines to form water again.  Keep in mind I'm just an amateur with HHO and electrolysis so there is a good chance I'm mistaken but it's something to think about.

The problems I came up with didn't really have to do with water forming since it would most likely vaporize in the combustion chamber and would thus be steam out the exhaust, but more with actually introducing the HHO into the engine.  Since it's running with positive pressure then traditional means of using engine vacuum to draw the HHO into the cylinders won't work unless you're at idle (look at a vac/boost gauge when you're driving) so most likely you'll end up leaking boost into the HHO input tubes and pressurizing the reactor (wouldn't happen with some heavy check valves but you're still not using HHO except for idle).  The solution to this would be to introduce the HHO before the turbocharger which is dangerous itself... think about how hot the turbo gets (enough to glow during some hard laps) then introduce a highly flammable gas into that and you get a disaster in my mind.  Two ways I can conceive running this is with a pump that produces more pressure than your turbo (in my case it would have to be able to overcome 11psi) or have a reactor that can produce HHO fast enough to create the necessary pressure (which is unlikely at this point).

**EDIT** Just had a thought about utilizing a venturi of sorts in the intake piping after the intercooler - although I have no idea how/if that'll work in a pressurized environment.

Tuning it is a whole other monster.

Anyway I'd like to hear how others are dealing with using HHO in turbocharged applications.  BoostMR2 can you link me to some examples of turbo-diesels using HHO... might be able to figure out how they're introducing it on those motors.  Funny thing about diesels is they'll be content burning a variety of fuels... except gas and the more explosive things so I'd like to see how they modified the tuning to be able to handle the extremely fast burning HHO... since depending on how much of it is being burned, gas engines benefit from ignition timing changes (could pose another problem with turbocharged cars... detonation/preignition).