27-03-2012, 01:22 PM
But NOx is almost impossible to measure reliably...
NOx is a sign of a HEALTHY engine, if you catch my point, the fact it produces NOx is a GOOD thing as far as the engine is concerned, it means the combustion temperatures are good and you won't get much unburnt/part burnt HC, it's just that the earth doesn't like it so much!
I can't see a way they're going to measure if the NOx output is too high on an engine any time soon... Thing is, if you delete the Cat without removing the EGR system, you're likely to produce loads of CO - as the engine is burning very close to stoichiometric, any slight deviation will cause HC and CO with no Cat to rectify that...
NOx is a sign of a HEALTHY engine, if you catch my point, the fact it produces NOx is a GOOD thing as far as the engine is concerned, it means the combustion temperatures are good and you won't get much unburnt/part burnt HC, it's just that the earth doesn't like it so much!
I can't see a way they're going to measure if the NOx output is too high on an engine any time soon... Thing is, if you delete the Cat without removing the EGR system, you're likely to produce loads of CO - as the engine is burning very close to stoichiometric, any slight deviation will cause HC and CO with no Cat to rectify that...
