turbine

iTrader: (1)

when you premix you increase your hydrocarbons in the exhaust how much does this affect the reading of a wideband? if any.

slpin

iTrader: (9)

co2 is really close to afr reading from what i have seen.............................................. ............
so no, it shouldnt affect reading

NZConvertible

Oxygen sensors (including wideband ones) detect oxygen, not hydrocarbons.

eriksseven

iTrader: (6)

duuuuude.... Tyler. What's up bro'?

How's the (now defunct) Stage IV treating you? I'm thinkin' about a stage III...

turbine

iTrader: (1)

An oxygen sensor doesn't detect oxygen. it actually detects the difference in the oxygen concentration between the atmosphere and the exhaust stream.

However that is not actually the question I asked.

What my question asked is how many waste hydrocarbons I can expect to find in my exhaust due to the addition of 2-cycle oil. Clearly, your lack of knowledge of oxygen sensor design makes any reply you might give on this topic suspect.

DerangedHermit

Holy crap, someone crossed NZConvertible. This should get good.

deadRX7Conv

Don't worry about it. Since you're premixing, you're displacing one fuel for another.

DerangedHermit

True, but they burn in different ways. Diesel and gasoline are both technically gases, but that doesn't mean they produce the same emissions.

prjct87rx7

iTrader: (7)

wheres nz's response to that? hes one of the smartest dudes on here,and you said his lack of knowledge??? lol

RotaryEvolution

iTrader: (30)

not enough to worry about, the hydrocarbons are trapped in the unburnt oil vapors. premixed cars hardly see any noticable change on smog so i can't see any major difference being seen with a wideband.

muythaibxr

actually, a wideband "consumes" either free O2 or free hydrocarbons in the exhaust stream.

A rich mixture will cause a pump current going in one direction to consume all the hydrocarbons, a lean mixture will cause the electronics controlling the sensor to produce a current in another direction to consume the oxygen. Which direction the current goes depends on the voltage of the "reference cell" which is basically a narrowband sensor that only senses rich or lean. The pump current required to neutralize all the hydrocarbons or oxygen in the mixture is what is used by the controller to determine the actual AFR.

So really if you think about it, it's detecting/consuming oxygen on the lean side, and detecting/consuming hydrocarbons on the rich side... how much of each determines how lean/rich the controller reports the mixture is.

My info comes from http://www.wbo2.com/lsu/default.htm under "How 5 Wire Pump Cell Sensors Work." You can go there if my explanation sucked too bad...


To answer the question... I don't think premixing changes anything enough to have an impact. You might end up with slightly more hydrocarbons, but I would think no more than you'd end up with if you were still burning the normal oil coming in through the oil injectors.

NZConvertible

Why should I bother? Technically he's right, but not because I'm wrong. I just didn't think this simple question neede a complicated answer. His snarky comment is probably just in response to the many times I've corrected BS he's posted.

RotaryEvolution

iTrader: (30)

well your original comment was actually false.

it's ok to admit you're wrong every now and then.

DerangedHermit

Lol. You've corrected me like 800 times so I know not to cross you .