Pilot Study, Fault Identification and Effect of Maintenance

Diesel Vehicle Emissions – In-Service Emissions Testing – Pilot Study, Fault Identification and Effect of Maintenance - Appendices
Table A6-1
Categories 1+2 Fault Diagnosis Selection
NOx
Ranking
/115
PM
Ranking
/115
NOx
(% above
average)
PM
(% above
average)
Sum of
NOx & PM
Ranking
/115
Average
Opacity
Ranking
/115
Average
Opacity
(% above
average)
Test No
NOx
(g/km.t)
PM
(mg/km.t)
540 2.9 235 2 37 235 18 1 97 -53.7
1700 3.0 114 1 80 251 -42 2 97 -53.7
1372 1.1 522 13 4 29 163 4 16 61.8
1338 1.1 484 19 6 22 143 6 60 -7.0
1717 0.7 470 79 9 -22 136 12 8 93.4
1755 1.1 352 14 16 27 77 13 9 93.2
1744 1.0 330 32 18 11 66 18 18 52.7
1592 0.6 404 97 11 -35 103 21 1 162.2
546 0.4 415 110 10 -49 109 24 7 93.4
1711 0.9 298 46 20 3 50 26 20 49.5
1495 0.7 322 73 19 -18 62 31 14 69.2
1472 1.7 66 5 101 100 -67 34 71 -24.3
1341 0.9 262 50 26 2 32 35 49 8.4
1594 0.6 287 85 22 -26 44 39 12 70.9
1453 0.8 214 55 40 -3 8 44 38 15.9
1758 1.2 119 10 78 43 -40 48 100 -56.1
1572 1.1 150 16 67 23 -24 52 81 -36.3
976 0.8 206 63 46 -10 4 55 63 -16.5
1469 1.0 135 23 72 19 -32 58 39 15.5
1306 0.7 208 78 45 -22 5 61 111 -75.2
548 0.5 213 103 42 -40 7 64 59 -4.3
NOx Emissions (g/km .t)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Mass Normalised Emissions
MC & NA Vehicles < 3.5t GVM (1980 to 1995)
NOx A verage
PM A v erage
0 100 200 300 400 500 600 700 800
PM Emissions (mg/km.t)
Figure A6-1
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