Pilot Study, Fault Identification and Effect of Maintenance

Diesel Vehicle Emissions – In-Service Emissions Testing – Pilot Study, Fault Identification and Effect of Maintenance - Appendices
Original
Test No
Rank
NOx
(g/km.t)
Table A7-3
Category 4 + 5 Minor Repair Results
Before Repair
After Repair
PM
(mg/km.t)
Average
Opacity
(%)
Vehicle
Condition
NOx
(g/km.t)
PM
(mg/km.t)
Average
Opacity
(%)
Vehicle
Condition
Total Cost
($)
1092 5 1.2 406 43 3 1.9 203 26 2 $945 7
1437 6 0.7 470 41 3 0.8 213 36 2 $890 6
1019 10 0.9 293 23 3 0.8 115 21 2 $770 5
958 12 1.6 168 13 3 1.3 93 17 2.5 $977 6
1086 15 1.1 202 12 3 1.4 179 18 2 $1,846 17
1080 18 1.1 189 14 2 1.3 107 11 2 $975 6
1028 21 1.1 181 12 3 1.0 91 15 2 $284 2
1439 32 1.5 86 9 3 1.3 73 15 3 $223 2
1085 38 1.0 140 14 2 0.8 93 16 2 $1,083 13
911 52 0.8 147 22 2 0.9 79 19 2 $987 5
1269 53 1.0 113 17 3 1.0 61 15 2.5 $816 7
1615 66 0.8 120 17 3 0.9 69 13 2.5 $878 10
Average 1.1 210 20 2.8 1.1 115 18 2.2 $890 7
Repair
Time
(hours)
Results
10000
1000
100
10
1
1.1
1.1
Cost Benefit
Average of 12 Vehicles Repaired
NB Vehicles 3.5t - 12t GVM (1980 to 1995)
Original Test
A fter M inor Repair
210
Catego ry A verage
115
20 18
2.8 2.2
$890
7
0
NOx (g/km.t) PM (mg/km.t) Average
Opacity (%)
Vehicle
Condition
Total Cost ($)
Repair Time
(hours)
Parameters Measured
Figure A7-19
% change (post/pre)
30
20
10
0
-10
-20
-30
-40
3.8
NOx
(g/km.t)
Cost Benefit
Average of 12 Vehicles Repaired
NB Vehicles 3.5t - 12t GVM (1980 to 1995)
$ 890 - Average Cost
$ 1846 - Max Cost
$ 223 - Min Cost
PM
(mg/km.t)
-6.7
Average
Opacity
(%)
-50
-45.3
-60
Parameters Measured
Figure A7-20
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