Quote:
Originally Posted by ttoyoda
I wonder if the emissions test are done with the EPA drive cycle. If not, lean burn and to hades with the NOX here we come  |
I think they are. I read somewhere that they don't measure fuel used, just a full analysis on all collected emissions during the drive cycle and calculate fuel used from carbon emissions. This averages the concentrations of pollutants over the cycle since 2-stage catalysts alternate between high NOx and high HC/CO ppms during operation.
I just can't remember if that was the EPA or EU test...