Same as the MAF, calculate the fueling error and multiply the commanded AFR as required. Need 5% less fuel, multiply the table value by 1.05.
Quote:
Originally Posted by Tor
I had to read this several times and my head is about to explode thinking about what unburnt fuel may do to an O2 reading.  You say "it can read leaner" i.e it's actually richer, where Wayno say it "may actually be lean". If the O2 sensor just reads the oxygen ratio, isn't all what unburnt fuel can do just to dilute the remaining composition of the exhaust gasses? Which in terms would mean the sensor reads less oxygen (rich?) - In that the reading is rich and the actual combustion is leaner than the reading? Or where is the fallacy? |
The Lambda sensor is a gas sensor. Unless you were to literally flood the exhaust with fuel, unburnt fuel is not detected. Think about it like this, if you have a lot of cam overlap there can be air bypassing the cylinder and therefore the reading can be lean. But you can't have a reading that is richer than the mixture in the cylinder. Unburnt fuel reaching the exhaust will be almost always be when there is cam overlap and therefore a lean reading will occur.