Pilot Study, Fault Identification and Effect of Maintenance

Diesel Vehicle Emissions – In-Service Emissions Testing – Pilot Study, Fault Identification and Effect of Maintenance - Appendices
% above group average
400
300
200
100
0
-100
-200
Ranked Mass Normalised Emissions
NB Vehicles 3.5t - 12t GVM (1980 to 1995)
Sum of NOx & PM
0 10 20 30 40 50 60 70 80 90 100 110
Rank of Emissions
Figure A6-8
% above group average
400
300
200
100
0
-100
-200
Ranked Mass Normalised Emissions
NB Vehicles 3.5t - 12t GVM (1980 to 1995)
0 10 20 30 40 50 60 70 80 90 100 110
Rank of Emissions
NOx
Sum of NOx & PM
PM
Average Opacity
Figure A6-9
Table A6-4
Category 6 Fault Diagnosis Selection
NOx
Ranking
/55
PM
Ranking
/55
NOx
(% above
average)
PM
(% above
average)
Sum of
NOx & PM
Ranking
/55
Average
Opacity
Ranking
/55
Average
Opacity
(% above
average)
Test No
NOx
(g/km.t)
PM
(mg/km.t)
1152 1.8 296 2 1 82 244 1 3 138.5
1105 1.6 147 3 9 63 71 4 45 -49.8
1162 1.2 182 13 5 17 112 5 9 55.6
1026 0.9 195 25 3 -5 127 6 5 83.6
1239 1.0 147 19 8 3 72 10 11 53.4
1330 0.8 162 44 7 -23 89 11 2 139.2
941 1.0 104 21 15 0 21 15 15 36.6
1244 0.9 110 29 13 -9 28 17 8 62.3
960 1.5 54 4 35 46 -37 19 53 -77.3
1221 1.3 45 7 41 34 -48 26 26 -5.1
933 1.2 19 8 54 25 -78 40 49 -69.6
1454 0.7 55 45 34 -25 -36 43 21 8.2
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