Pilot Study, Fault Identification and Effect of Maintenance

Diesel Vehicle Emissions – In-Service Emissions Testing – Pilot Study, Fault Identification and Effect of Maintenance - Appendices
Cost Benefit
Test No: 1380 & 1893 - Rank 34 / 110 (High PM & NOx)
10000
ME & NC Vehicles 12t - 25t GVM (1980 to 1995)
Injectors nozzles and pump parts replaced
$2,228
1000
Original Test
Results
100
10
1.3
1.2
62
62
17
23
A fter M ino r Repair
Catego ry A verage
3 2.5
24
1
0
NOx (g/km.t) PM (mg/km.t) A verage
Vehicle
Total Cost
Repair Time
Opacity (%)
Condition
($)
(hours)
Parameters Measured
Figure A7-49
Cost Benefit
Test No: 955 & 1890 - Rank 38 / 110 (High PM)
10000
1000
ME & NC Vehicles 12t - 25t GVM (1980 to 1995)
Injector nozzles, w ashers & seals replaced
Original Test
$785
Results
100
10
88
57
20
18
A fter M ino r Repair
Catego ry A verage
3 2.5
6
1
0.8
0.8
0
NOx (g/km.t) PM (mg/km.t) A verage
Vehicle
Total Cost
Repair Time
Opacity (%)
Condition
($)
(hours)
Parameters Measured
Figure A7-50
1000
Cost Benefit
Test No: 1206 & 1888 - Rank 41 / 110 (High NOx)
ME & NC Vehicles 12t - 25t GVM (1980 to 1995)
Pump to engine timing corrected (w as 6° retarded)
$165
Results
100
10
1
1.3
1.7
50
27
9
11
Original Test
A fter M ino r Repair
Catego ry A verage
1 1
3
0
NOx (g/km.t) PM (mg/km.t) Average
Vehicle
Total Cost
Repair Time
Opacity (%)
Condition
($)
(hours)
Parameters Measured
Figure A7-51
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