Quote:
Originally Posted by Chabadnik
Because HHO is part oxygen... Why would it not see it, because after combustion it immediately bonds back to water?
|
Almost right. Combustion IS the process of bonding it back into water. The O2 sensor looks for O2, not H2O.
Quote:
|
Even if it doesn't see it, why keep injecting extra fuel if there is already increased power from 'extra' HHO, this is asking for leaning the mixture, no?
|
Assuming that it works as one might wish it to (I share the skepticism expressed by the others, but I can speak theoretically), it wouldn't inject extra fuel; you are the one injecting extra fuel (two atoms of Hydrogen) along with the oxygen necessary to burn that fuel and produce water.
Come to think of it, after you split it into HHO, would the oxygen bind to itself to become O2 or would it just be O? I don't know if an O2 sensor would even measure any O (that could be an interesting question actually), and I also don't know if O will combine with the two atoms of H; the H might burn with O2 from the air rather than the O that came in along with the H.
Either way, if HHO is operating as promised then there's no reason to think that the ECU will inject more gasoline. If "there is already increased power from 'extra' HHO" then the driver will reduce air intake (and therefore fuel injected) by closing the throttle until only enough power is being produced. That is supposed to be the whole reason to use HHO.
In reality, any power gained from HHO doesn't come from magic, it comes from the alternator which drags more on the engine to produce the electricity used to split the water. That drag, in turn, means opening the throttle more -- and since the processes of splitting water and burning HHO back into water are not 100% efficient, energy is lost in those conversions, you'll have to produce more energy by burning more gasoline.
Quote:
in any case, how is AFR leaned out by remapping? which AFR table is a root table, and generally what has to be done to actually change it if it requires changing more than one table?
Thanks for your response.
|
The answer is different depending on what ECU you have. I don't know details about changing the tables but I can tell you about some of the tools used...
Modern GM V8 engines can be adjusted with an expensive system called
EFILive. There are professional tuning companies that will tune you with EFILive for a few hundred bucks if you don't want to purchase the system yourself.
For modern Volkswagens there is a similar system called
Vag-Com/VCDS.
Vag Tool Finder may be able to hook you up with someone who has it and will help you. (Before posting this message I noticed your other post; this should answer that question.)
I bet similar stuff exists for other manufacturers.
Otherwise, you could go a different direction:
Megasquirt. Then you're completely in control.
However, if you're not looking to customize everything and
only want a simple way to destroy your engine by running very lean in an engine not designed to run that way, the term you need to google is EFIE (as mentioned by BEEF). I'm not sure how well they work since AFAIK they only affect the signal from the O2 sensors; the ECU should see spurious data from the O2 sensors and ignore them, using whatever good data it can find (MAF, etc) and throwing a code.
__________________
Linear Mode
