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NissanTaylor Profile
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Date Registered: 06-2008
Location: Canberra, ACT
TOTAL POSTS: 244
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Cheap fuel saving gizmo?


Recently i stumbled across this O2 sensor spacer. It moves the tip of the o2 sensor back so its not directly in the path of the exhaust gases, the o2 sensor senses less oxygen in the exhaust gases and leans out the air/fuel mixture a little. Hence saving fuel. it shouldnt have any affect on the engine because the car runs a little rich anyway.
This spacer can also be used by people that have a twin o2 sensor setup and they dont have or have smashed the monolith out of their cat converter. install it on the second sensor and it will sense a drop oxygen between the to sensors and the cpu thinks there is a cat there and its doing it job. I have not yet purchased one of these but am very interested.

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X-897
My Old Platium 07 STS Xtreme - Click Here to check out my mods and pics
Now own a Black C34 Nissan Stagea RS4-S
27/Jun/2008, 7:40 pm Link to this post Send Email PM   Send Private Message
 
Snoopy6 Profile
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Date Registered: 03-2008
Location: Port Kennedy, West Australia
TOTAL POSTS: 30
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Re: Cheap fuel saving gizmo?


Surely fooling the ECU into providing the engine with an artificially lean mixture would be asking for trouble in the form of detonation of the fuel/air mix instead of an even burn.

I am, however, very interested in learning about the use of supplemental hydroxy gas (HHO) as a means of fuel saving by allowing each fuel mix charge to FULLY burn, thus reducing exhaust emissions to near zero (water in fact) and allowing the vehicle to benefit from the extra power obtained from the higher efficiency combustion.

Now, I know I'm opening a can of worms here as HHO gas is obtained by electrolyzing water but there are many, many DIYers (here and overseas) putting these systems together in backyard garages and achieving worthwhile gains in fuel economy. There is a wealth of information and discussion on the internet, some of the claims are wildly exaggerated and of course the knockers are out there in force too. We just have to use our nous to sort the wheat from the chaff.

The simplest engines to convert are the old normally carburetted non computerised models of yesteryear, but modern EFI and ECU equipped cars can also be successfully converted albeit with a higher level of technical complexity ... i.e. we then have to fool the computer as the oxygen content is higher. This, in turn, prompts the ECU to supply more fuel to the engine, effectively nullifying the savings. This is where your suggestion of an O2 sensor spacer would be of benefit, to prevent this extra (wasted) fuel from being sent to the engine.

I have no commercial interest in this subject ... indeed, my interest stems from the ever rising fuel prices ... and I think it's time we brought this (previously covered up) technology into public awareness where it can be properly evaluated. Let the debate begin!

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John ... 2008 Ti, CVT, Twilight, factory nudge, roof bars, canoe/kayak carrier, colour coded door protection mouldings, tow bar, K&N air filter, HID (4300K) headlights.
4/Jul/2008, 1:31 am Link to this post Send Email PM   Send Private Message MSN
 
ceasar M Profile
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Date Registered: 12-2005
Location: sydney australia
TOTAL POSTS: 97
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Re: Cheap fuel saving gizmo?


This might also good thing to start a debate, as its proven worked in some combustion engines before.

http://en.wikipedia.org/wiki/Water_injection_(engines)
Ceasar

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Ti-L 03
Ceasar- X256
Hi Tech dual exhaust,OBA stainless steel extractor,OBA cold air intake with K&N pod filter,7in. monitor with bluetooth ,GPS iGO8,,MP3,MP4.245x40x18
7/Jul/2008, 12:29 pm Link to this post Send Email PM   Send Private Message Blog
 
Snoopy6 Profile
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Date Registered: 03-2008
Location: Port Kennedy, West Australia
TOTAL POSTS: 30
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Re: Cheap fuel saving gizmo?


Hi Ceasar M! Thanks for replying to my "tongue in cheek" post. I am quite familiar with water injection ... it is quite common in turbo prop aircraft engines ... in fact some aircraft can't operate out of marginal airstrips if the "water meth" is inoperative. HHO gas (hydroxy) though, is a different subject from water injection.

Having spent many intriguing hours researching HHO use as a supplemental fuel, I am convinced that it is an excellent short term (i.e. until some completely new form of energy can totally replace fossil fuels) simple method of reducing both fuel consumption and exhaust emissions. Again, the principle involves separating water into it's constituent gases, namely hydrogen and oxygen (a highly combustible combination) by electrolysis.

The electrical power required comes from the vehicles own battery/alternator system. It is important to realize that the aim isn't to completely power the vehicle on HHO, but to use the gas as a supplement to allow the petrol to be totally burnt in the combustion chambers, i.e. raising the efficiency of the burn resulting in more power and less unburnt hydrocarbons in the exhaust. As the gas is produced in an "on demand" system, there is no requirement for dangerous high pressure storage tanks. Electrical supply to the HHO generator is controlled through the vehicle's ignition switch (and preferably also via an oil pressure switch) so gas is only made when the engine is running.

I am so convinced of the potential of this system that I'm purchasing a DIY kit and will try it out on my Mitsubishi express van which is normally aspirated and has no ECU. If that is successful, I will then fit a more advanced kit to my wife's Nissan Pulsar (which is fuel injected, does have an ECU and is out of warranty). It will be some time before my new Ti Exy gets a kit but that is not out of the question down the track dependent on the pulsar results. I will post more info including internet links when I have a system working on the Mitzi van.

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John ... 2008 Ti, CVT, Twilight, factory nudge, roof bars, canoe/kayak carrier, colour coded door protection mouldings, tow bar, K&N air filter, HID (4300K) headlights.
9/Jul/2008, 11:41 am Link to this post Send Email PM   Send Private Message MSN
 
NissanTaylor Profile
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Date Registered: 06-2008
Location: Canberra, ACT
TOTAL POSTS: 244
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Re: Cheap fuel saving gizmo?


i doubt highly it would affect the air/fuel ratio so much that it would cause detonation, thats what the knock sensor is there for anyway. Most EFI cars run rich from standard. some manufacturers are making all alloy engines with good cooling systems to cope with higher combustion temps so they can run leaner burns. if anything fitting this spacer to a slightly rich running vehicle could give closer to a stoichiometric (100% complete combustion of fuel) burn. Id like to see someone do a before and after with an exhaust gas analyser and see the effect on the level of hydrocarbons coming out the tailpipe.

Il have to look in to the HHO gas, have seen kits on ebay but never read up about it.

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X-897
My Old Platium 07 STS Xtreme - Click Here to check out my mods and pics
Now own a Black C34 Nissan Stagea RS4-S
9/Jul/2008, 6:22 pm Link to this post Send Email PM   Send Private Message
 


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