PHOTOGRAPHS OF ON-BOARD EMISSIONS SAMPLING SETUP FOR PARTICULATE MATTER MEASUREMENTS

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1 APPENDIX D PHOTOGRAPHS OF ON-BOARD EMISSIONS SAMPLING SETUP FOR PARTICULATE MATTER MEASUREMENTS Table of Contents FIGURE D-1. EXTERIOR VIEW OF HYBRID-ELECTRIC DIESEL BUS H FIGURE D-2. EXTERIOR VIEW OF REAR OF HYBRID BUS AND TRAILER. 2 FIGURE D-3. TOP OF HYBRID BUS SHOWING BATTERY PACK (WHITE, BACK), ROOF HATCH AND EXHAUST PIPE EXTENSION. 3 FIGURE D-4. ROOF HATCH 3 FIGURE D-5. EXHAUST PIPE EXTENSION AND TAILPIPE ADAPTER 4 FIGURE D-6. EXHAUST TAILPIPE ADAPTER SECTION. 4 FIGURE D-7. EXHAUST PIPE ELBOW SHOWING CONNECTION TO HEATED PM TRANSFER LINE 5 FIGURE D-8. TRAILER CARRYING AIR COMPRESSOR AND 15KW GENERATOR 5 FIGURE D-9. INTERIOR OF BUS DURING ON-ROAD SAMPLING 6 FIGURE D-10. MINIDILUTION SYSTEM. 6 FIGURE D-11. DE-AQUAVATOR. 7 FIGURE D-12. PM FILTER AND ANDERSEN PUMP. 7 FIGURE D-14. THE 3-DRUM INSTRUMENT. 9 FIGURE D-15. FRONT VIEW OF SCANNING MOBILITY PARTICLE SIZER (SMPS). 9 FIGURE D-16. SMPS MOUNTED ON ITS VIBRATION PLATFORM. 10 FIGURE D-17. THE ELECTRICAL LOW PRESSURE IMPACTOR (ELPI) MOUNTED ON ITS VIBRATION BOARD. 11 D-1

2 Figure D-1. Exterior view of hybrid-electric diesel bus H301. Figure D-2. Exterior view of rear of hybrid bus and trailer. D-2

3 Figure D-3. Top of hybrid bus showing battery pack (white, back), roof hatch and exhaust pipe extension. Figure D-4. Roof Hatch showing heated PM transfer line (black), air compressor hose (red) and Horiba heated line (grey) entering interior of bus. D-3

4 Figure D-5. Exhaust pipe extension and tailpipe adapter section where pitot tube measured exhaust flow rate, thermocouple measured exhaust temperature, and Horiba gas measurements were made. Figure D-6. Exhaust tailpipe adapter section. Aluminum plate was installed to avoid wind effects on flow rate measurement. D-4

5 Figure D-7. Exhaust pipe elbow showing connection to heated PM transfer line (black). The PM sampling probe was a perforated stainless steel pipe across entire 6-inch diameter of the elbow. Figure D-8. Trailer carrying air compressor and 15kW generator. A white plastic hood was constructed over the generator for rain protection. D-5

6 Figure D-9. Interior of bus during on-road sampling. Figure D-10. Minidilution system. Magnehelics and mass flow meters are visible for diluter A (right side) and diluter B (left side). The overhead handrails were used to support both diluters. D-6

7 Figure D-11. De-aquavator. Compressed air hose from compressor entered system on right (red hose). PM Filter Holder Figure D-12. PM Filter and Andersen pump. D-7

8 PM Filter Holder Andersen Pump Figure D-13. PM Filter and Andersen pump. The platform for the pump was located in the first seat behind the rear door of bus. The 3-DRUM is shown open behind the Andersen pump. D-8

9 Figure D-14. The 3-DRUM instrument. A three-stage cascade impactor was located behind the PM filter Andersen pump. Figure D-15. Front view of Scanning Mobility Particle Sizer (SMPS). D-9

10 Figure D-16. SMPS mounted on its vibration platform. The classifier is on the left, long DMA is the stainless steel column and CPC has laptop on top of it. ELPI is visible in background. D-10

11 Figure D-17. The Electrical Low Pressure Impactor (ELPI) mounted on its vibration board. A three-passenger seat in the center of the bus was removed to install the ELPI instrument platform. D-11

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