1. test results and second proposal by Japan
NO2 Measurement Method
test results and second proposal by Japan
9 December 2011

2. NO -> NO2 reaction ratio
NO2 reaction ratio is less than 2% when NO concentration in bags is less than 4 ppm (=equivalent Euro 5 or 6 level) 3
Test results
(measured by CLD) ●
2.5
*: average CVS 12m3/min 2
Theoretical line of
NO->NO2 reaction ratio
D-Euro6*
NO -> NO2 reaction ratio
in Bag after 15 min. (%)
G-Euro5,6*
1.5 1
D-Euro5*
0.5 1 2 3 4 5 6
Bag-NO Concentration (ppm)
Remind:WLTP-DTP-AP japanese proposal NO2 (9/10 DEC. 2010)

3. 　NONO2 reaction ratio is less than 3% in 30 minutes, almost same results as in 15 minutes

4. 【Results】
NO2 reaction ratio was found to be very small, less than 3%, in sampling bags at the NOx level which comply with EURO6
【Japan Proposal】
Japan requests to adopt NO2 Measurement Method using bags as well as NO integration method