So i purchased this combustion analyzer, and i tested an older whole house generator that runs on natural gas.
Question: what is the normal gas levels for this type of engine?
Lambda was lean and the o2 level was around 6%..
Just curious if this is normal?
I will try and test a new generator tomorrow.
Cheers
Yes 100% normal the analyzer isn't designed for engines running on natural gas. However there is a correction multiplyer -- I don't have to hand but I will try to find it.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
So i checked a brand new kohler yesterday and it was 10% O2. So yeah. About the same.
The analyzer has fuel options in the menu; gasoline, cng, lpg, and diesel.
I thought this was to adjust for the different hydrocarbons. I guess the o2 is a percentage and has to add them all together. Maybe if i read it as ppm it would be more helpful?
I called briggs and Stratton and kohler and neither could give me emissions standards:(
So i ran a test on a 12kw kohler 12RESV and it was running rich. Lambda was 0.89
They don't give an adjustment, but it shows these units are not tuned properly. I will try some other brands when i get the chance.
Don't they have to report those emission standards to the EPA or state EPA in some instances?
IF so that may be a direction to try for that information as those machines have to comply before allowed to be sold I'd think with all the restrictions these days?
