Background of N2O measurement
・N2O…Around 310 times more impact per unit
weight on global warming than CO2
The factor of ozone layer depletion
・N2O emission gas from automobile occupies
over 90% in that of transportation.
・EPA will require N2O gas measurement from
2015, and issue standard (0.010g/mile)
・The amount of N2O gas generation depends on
after treatment systems for exhaust gas
emission.