Pilot Study, Fault Identification and Effect of Maintenance

Diesel Vehicle Emissions – In-Service Emissions Testing – Pilot Study, Fault Identification and Effect of Maintenance - Appendices
10000
1000
Cost Benefit
Test No: 1115 & 1824 - Rank 3 / 55 (High PM)
ME & NC Vehicles 12t - 25t GVM (1996 to 2000)
Injector w ashers replaced & nozzles ultrasonically cleaned
$580
Results
100
10
1
0.9
0.9
61
43
8
7
Original Test
A fter M ino r Repair
Catego ry A verage
2 2
8
0
NOx (g/km.t) PM (mg/km.t) Average
Vehicle
Total Cost ($)
Repair Time
Opacity (%)
Condition
(hours)
Parameters Measured
Figure A7-55
Cost Benefit
Test No: 1124 & 1808 - Rank 4 / 55 (High PM)
Results
10000
1000
100
10
ME & NC Vehicles 12t - 25t GVM (1996 to 2000)
Injector nozzles & pump gaskets and parts replaced
Original Test
65
45
A fter M ino r Repair
Catego ry A verage
10
7
$2,129
18
1
0.7
0.7
1
1
0
NOx (g/km.t) PM (mg/km.t) Average
Vehicle
Total Cost ($)
Repair Time
Opacity (%)
Condition
(hours)
Parameters Measured
Figure A7-56
Cost Benefit
Test No: 956 & 1782 - Rank 6 / 55 (High PM)
1000
ME & NC Vehicles 12t - 25t GVM (1996 to 2000)
Results
100
10
1
0.7
0.6
57
Throttle adjusted
25
7 8
Original Test
A fter M ino r Repair
Catego ry A verage
2
1
$60
1
0
NOx (g/km.t) PM (mg/km.t) Average
Vehicle
Total Cost ($)
Repair Time
Opacity (%)
Condition
(hours)
Parameters Measured
Figure A7-57
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