vielecustoms -
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Originally Posted by vielecustoms
my old landlord used to make and experiment with his own systems. he was just starting and the gains were not huge but he did get an extra 20 mpg, on a Saturn and neon, from the system he had built. supposedly now he is getting more. one big part is not just the HHO generator but being able to control the fuel system in the vehicle, to lean out the fuel mixture. (the o2 sensor will read the extra oxygen fron the generator and actually add more gas to the mix if there is no way to control it). he also changed all the fluids to synthetics, ran the tires at just above the max pressure and made this thing that heated the fuel before it was injected. and of course driving easily. I am sure his other mod's could have had helped with the overall gain. his website is Hydrogen-Boost I am not spamming, he has some information and videos on there that may be useful, there is some usual sales BS but you can make your own opinion. |
For post-carburetor gasoline engines, I think the big question in all these systems is that you always have to fool the 02 sensor into running lean for HHO to work. I think an argument can be made that MPG gains can come from running lean, period (i.e. Honda VX or HX). Running lean doesn't need an HHO generator to work. Another claim is better emissions. This may be possible, but juggling lean-burn with controlled HHO output implies the need for a more complex control system.
I got his system back in 2005, but I never got it work. He told me to install the whole system. In his defense, I didn't do that, so I can't claim I did the full test. I didn't do things like spoof the 02 sensor or attach the fuel heater. By the time I did get an 02 spoofer, I had removed the hydrogen system, and was too lazee to restart it.
In this post I noted that he actually shot down his system on a Metro where the driver is hypermiling :
http://ecomodder.com/forum/76143-post18.html
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This is consistent with the argument that hydrogen works best on a vehicle that is doing *work*, aka a trucker hauling goods or a stationary engine on a contruction site. I consider the following dude to be an "honest broker" on the subject :
Diesel Dynamometer Testing Analysis
Hydrogen-Boost
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In the charts below the light blue shaded area represents the possible savings with Hydrogen Boost. The yellow shaded areas represent the possible NEGATIVE savings with Hydrogen Boost. Notice that at idle there is always a negative savings and at low cruise the savings may be negative or slightly positive. As stated in recent newsletter and documents the Hydrogen Boost benefits are especially prevalent when high power and torque are being produced (when lots of fuel is being combusted). This really shows that Hydrogen Boost can be most valuable with vehicles that are heavily loaded or underpowered.
The conditions where Hydrogen Boost may improve mileage the least is when the driver is already implementing driving tips like slow acceleration and cruising at low speeds and throttle settings. It may be possible that the cost of the hydrogen production could be higher than the benefits of that hydrogen to the miniscule amounts of fuel that are being combusted while using these efficient driving techniques. This is exaggerated when the operator sets his hydrogen production too high for the engine he is operating. ...
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If I had a diesel, I would probably try this again because I wouldn't have to add a lot of the other doo-dads.
Also, from my POV, even if the system netted 0 MPG gain or loss, but improved emissions, it would be a net gain for me.
CarloSW2