Pilot Study, Fault Identification and Effect of Maintenance

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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 A7-1 Category 1 + 2 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 ($) 1338 6 1.1 484 13 3 1.6 330 16 2 $2,619 18 1717 12 0.7 470 27 3 1.2 385 23 2 $2,007 18 1755 13 1.1 352 27 3 1.3 117 21 2.5 $772 6 1744 18 1.0 330 21 3 0.8 367 25 3 $169 1 1592 21 0.6 404 37 4 0.8 219 22 3 $2,600 19 1711 26 0.9 298 21 3 0.8 141 17 2 $596 5 1495 31 0.7 322 24 2 1.0 169 21 2 $350 4 1341 35 0.9 262 15 3 0.9 57 5 2 $1,797 18 1594 39 0.6 287 24 2 0.8 28 4 2 $414 4 1453 44 0.8 214 16 2 0.5 208 16 1.5 $414 4 1572 52 1.1 150 9 2 1.0 178 13 2 $757 6 976 55 0.8 206 12 2 1.0 140 16 2 $518 5 Average 0.8 315 20 2.7 1.0 195 17 2.2 $1,084 9 Repair Time (hours) 10000 1000 Cost Benefit Average of 12 Vehicles Repaired MC & NA Vehicles < 3.5t GVM (1980 to 1995) Original Test 315 A fter M ino r Repair 195 Catego ry A verage $1,084 Results 100 10 1 0.8 1.0 20 17 2.7 2.2 9 0 NOx (g/km.t) PM (mg/km.t) Average Opacity (%) Vehicle Condition Total Cost ($) Repair Time (hours) Parameters Measured Figure A7-1 % cha nge (post/pre) 30 20 10 0 -10 -20 -30 -40 -50 13.9 NOx (g/km.t) Cost Benefit Average of 12 Vehicles Repaired MC & NA Vehicles < 3.5t GVM (1980 to 1995) $ 1084 - Average Cost $ 2619 - Max Cost $ 169 - Min Cost PM (mg/km.t) -38.1 Average Opacity (%) -18.2 -60 Parameters Measured Figure A7-2 Page 59
Diesel Vehicle Emissions – In-Service Emissions Testing – Pilot Study, Fault Identification and Effect of Maintenance - Appendices Results 10000 1000 100 10 1 Cost Benefit Test No: 1338 & 1853 - Rank 6 / 115 (High PM & NOx ) MC & NA Vehicles < 3.5t GVM (1980 to 1995) Replaced major pump parts, injector nozzles and air & fuel filters $2,619 484 330 Original Test A fter M ino r Repair 13 16 Catego ry Average 3 1.6 1.1 2 18 0 NOx (g/km.t) PM (mg/km.t) A verage Vehicle Total Cos t Repair Time Opacity (%) Condition ($) (hours) Parameters Measured Figure A7-3 Cost Benefit Test No: 1717 & 1842 - Rank 12 / 115 (High PM) 10000 MC & NA Vehicles < 3.5t GVM (1980 to 1995) Calibration of fuel pump, repair injectors and replace fuel & air filter $2,007 1000 470 385 Original Test Results 100 10 1 0.7 1.2 27 23 A fter M ino r Repair Category Average 3 2 18 0 NOx (g/km.t) PM (mg/km.t) A verage Vehicle Total Cos t Repair Time Opacity (%) Condition ($) (hours) Parameters Measured Figure A7-4 Cost Benefit Test No: 1755 & 1825 - Rank 13 / 115 (High PM & NOx) Results 10000 1000 100 10 1 1.1 1.3 MC & NA Vehicles < 3.5t GVM (1980 to 1995) Drain fuel tank, replace injector nozzles & air & fuel filters 352 117 Original Test A fter M ino r Repair 27 21 Category Average 3 2.5 $772 6 0 NOx (g/km.t) PM (mg/km.t) Average Vehicle Total Cost ($) Repair Time Opacity (%) Condition (hours) Parameters Measured Figure A7-5 Page 60
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Pilot Study, Fault Identification and Effect of Maintenance

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