Class-8 Heavy Truck Duty Cycle Project Final Report - Center for ...

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2.8 CONDUCTION OF FOT The FOT lasted 12 months and required ongoing involvement of the test team in regular data collection, equipment maintenance, and preliminary data analysis to diagnose sensor problems. 2.8.1 Upload Procedure Data collected during the FOT was uploaded periodically from each test vehicle onto an ORNL project computer. An ORNL staff member would travel from Knoxville, Tennessee, to Jefferson City, Tennessee, a distance of about 50 miles (one-way), and would upload the collected data from the DAS of each of the instrumented tractors in the Schrader truck yard. Typically, all of the tractors would return to Jefferson City for the weekend which provided a good opportunity to upload the collected data. Initially, data was uploaded weekly in order to quickly diagnose and correct instrumentation and configuration problems early in the FOT. After several weeks of regular uploads without encountering any major problems with the instrumentation suite, data was uploaded approximately every two weeks. This procedure included verifying that the sensors were working, uploading the data, and archiving the data to prevent data loss. This procedure is detailed in the SDOD (Appendix D, Section 8.2.1). On several occasions, a tractor would not be available at the Schrader truck yard over the weekend. There was sufficient capacity in the DAS memory to allow about a month’s worth of data to be collected between data uploads. 2.8.2 Issues Encountered during the FOT During the FOT, the majority of the equipment functioned as expected. Preliminary testing of each DAS allowed most of the problems to be discovered and resolved before the actual FOT. The problems which were not foreseen during the early stages of the testing involved the long-term nature of the project which could not be simulated prior to the start of the FOT. On several occasions, the weather stations ceased to generate data, and were found to have been water-damaged in use. After the weather stations were repaired, they were mounted at a different location in order to avoid the damage that had been experienced. The weather stations were mounted on the driver’s side mirror rather than the front mirror. After re-deploying, water damage to the weather station was experienced again. Upon further investigation, it was discovered that all of the Schrader trucks were being power-washed regularly, and that this power-washing damaged the weather stations. It was requested that Schrader personnel cover the weather stations during washing, and by doing so, no further water-related weather station problems were encountered for the remainder of the FOT. Technical difficulties were also encountered with the VBOX. For several data collection periods, no data was being reported by the VBOX. Upon investigation, the problem was found to be the result of failing antennas, again from water infiltration. This problem was corrected by replacing the antennas on the failing units and restarting the VBOX. Because the channels were checked each time the data was uploaded, this problem was identified and corrected soon after deployment, resulting in a minimum loss of data. It is not clear if the water infiltration was due to the pressure washing of the Schrader trucks or from normal exposure to rain at highway speeds. 34
2.8.3 Test Routes Because the FOT resulted in the collection of an entire year’s worth of data for six test trucks, the data included a variety of weather conditions and terrain. A description of the routes traveled, along with interesting duty cycles obtained in the FOT, appear in Section 6, Data Analysis. 2.8.4 De-instrumentation Upon the completion of the FOT, the six test vehicles were de-instrumented from October 27, 2007, to February 16, 2008. This involved the removal of all DAS components and wiring with the exception of the Air-Weigh, which remained on each test vehicle. In accordance with the MOU, the tires supplied for the FOT remained with the test vehicles as well. Mounting brackets for the weather stations were removed, and the holes that had been drilled to accommodate wires were filled. 35
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Class-8 Heavy Truck Duty Cycle Proj
Page 3: Vehicle Systems Program ORNL/TM-200
Page 6 and 7: 2.7 LAUNCH OF THE FOT (OCTOBER 23,
Page 8 and 9: 40 Connection and Support Structure
Page 11: LIST OF TABLES Table Page 1 Pilot T
Page 15: ACKNOWLEDGEMENTS The Oak Ridge Nati
Page 18 and 19: Sixty channels of data were collect
Page 20 and 21: xviii
Page 22 and 23: The data analyses performed in Phas
Page 24 and 25: Fig. 2. HHDDT Transient Mode In add
Page 26 and 27: vehicle; 3) a transit bus; 4) a nei
Page 28 and 29: payload and accessory load would al
Page 30 and 31: Data # Performance Measure Benefit
Page 32 and 33: Data # Performance Measure Benefit
Page 34 and 35: Fig. 10. NGK NOx/O2 Sensors Fig. 11
Page 36 and 37: 1.3.4 De-instrumentation: Following
Page 38 and 39: Fig. 16. Pilot Test North-South Rou
Page 40 and 41: GPS information collected with the
Page 42 and 43: 2.1 REVIEW OF PERFORMANCE MEASURE R
Page 44 and 45: 2.3.2 Performance Measures Fig. 18.
Page 46 and 47: Signal Sensor 53 Road Grade Calcula
Page 48 and 49: 2.3.6 Tractor and Trailer Details F
Page 50 and 51: determined that the particular CANo
Page 52 and 53: Cable runs to and from sensors were
Page 57 and 58: 3. INTERNET DATA ACCESS TOOL The HT
Page 59: Fig. 30. Search Results The file se
Page 62 and 63: When the button “Extract Data”
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Page 72 and 73: vehicle was carrying a heavy load o
Page 74 and 75: Vehicle Speed [mph] Vehicle Speed [
Page 76 and 77: 5.2 REAL-WORLD DUTY CYCLES Informat
Page 78 and 79: Vehicle Speed [mph] 70 60 50 40 30
Page 80 and 81: Given the size and complexity of th
Page 82 and 83: data or out-of-range data. Therefor
Page 84 and 85: 6.1.1 Spatial Information Using the
Page 86 and 87: For those cases in which an instrum
Page 88 and 89: Fig. 56. DCGenT Prototype Search Cr
Page 90 and 91: at constant speed. Parameters m, b,
Page 92 and 93: weight. Notice that, as expected, m
Page 94 and 95: the loss of information, and conseq
Page 96 and 97: consumption per unit of distance tr
Page 98 and 99: q q ( − ) ( feb'− feb) 100 '
Page 100 and 101: Table 15. General Statistics: Total
Page 102 and 103: 70% 60% 50% 40% 30% 20% 10% 0% Idli
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Fig. 68. All Trips with Dual Tires
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The almost 700,000 miles logged dur
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Frequency 300 250 200 150 100 50 0
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Speed [mph] 80 70 60 50 40 30 20 10
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vehicle is hauling light or heavy l
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Frequency 350 300 250 200 150 100 5
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A summary of the statistics describ
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analysis controlling for the type o
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6.3.2.4 Summary of Fuel Efficiency
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Lesson Learned: A technology progre
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Lesson Learned: Adding external sen
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know if the vehicle was “filled u
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8. SUMMARY OF RESULTS AND CONCLUSIO
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9. FUTURE DIRECTIONS The Heavy Truc
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Appendix A PILOT TEST LETTER REPORT
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1.0 BACKGROUND 2.0 PROJECT OVERVIEW
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ACKNOWLEDGEMENTS The authors wish t
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evaluate the data collection system
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performance of their next generatio
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March and provided to the ORNL Prog
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Between January, 2005 and May, 2005
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Figure 4: NGK Sensor Figure 5: Omeg
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o Date and Time o Wind Speed o Wind
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Figures 28 through 31 show the ball
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Figure 22: Airweigh System Figure 2
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DVD. Figures 35 and 36 show some of
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3.3.7.1 Pre-Analysis Efforts: As th
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Task 1: Identification of Fleet(s)
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Data # Performance Measure Performa
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Sensor or eDaq Performance Performa
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45 46 47 48 49 50 51 52 53 Measure
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Data # 62 63 64 65-67 68-69 70-71 7
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Data # Performance Measure 87 Headi
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Appendix A-B Final Pilot Test Plan
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• DAS/sensor suite/cabling operab
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9 10 11 12 13 14 15 Lateral Velocit
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34 Rain Intensity 35 36 37 38 39 40
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59 60 61 62 63 64 65-67 68-69 70-71
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85 Longitude 86 Velocity 87 Heading
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3.2 Sensors The PMs listed in Table
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vehicles will be dedicated to the p
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DATE TEST ENGINEER: DRIVER: DEPARTI
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Jim Ridge, Dana Product Engineer, w
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Table 5.1 October Route and Schedul
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Table 5.2 December Route and Schedu
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Appendix A-C Field Test Signals 64
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9 Performance Measure Performance M
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Performance Measure 25 Rain Duratio
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Letter Report SUMMARY OF RELEVANT H
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Sensor or Performance Data Sensor o
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GAWR 44 lb AirWeigh 5800 Road Surfa
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Appendix B SCHRADER MEMORANDUM OF U
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MOU-UTB-2007001 Schrader Trucking C
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MOU-UTB-2007001 Schrader Trucking C
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Appendix C FIELD OPERATIONAL TEST P
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Collection, Analysis, and Archiving
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4.0 APPROACH Phases 2 and 3 of the
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Signal Sensor 60 Tractor-Trailer Ma
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Schrader Trucking will provide six
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Sensitive Information] [Partner Sen
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4.6 Sensor and DAS Integration to T
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5.5 Vehicle Deployment Methodology
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Start address: 2360 Cherahala Blvd
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Figure 6.2: Schrader Shop, Far Left
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Figure 6.7: eDAQ Lite with two Vehi
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6.5 Safety Information For Student
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Appendix D SYSTEM DESIGN AND OPERAT
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TABLE OF CONTENTS Collection, Analy
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9.1.2. Shutdown Procedure 9.1.3. SI
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Signal Sensor 26 Cruise Control Acc
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Figure 4.1: Air-Weigh System Compon
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4.5. EDAQ The eDAQ Lite is connecte
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the equipment inside from overheati
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5.4. Weather Station Connections Fi
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Figure 5.5.3: VBOX Cable Table 5.5.
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Figure 6.3: Weather Station Locatio
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6.6 Power Supply Use a second cable
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can also be changed from this windo
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on and the yellow light should begi
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Figure 7.1.3-1: Weather Station and
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Speed unit: m/s Sampling frequency:
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iii) Click on Browse to find and op
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c) Power Controller (Power) - no co
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1) Select the Transducer and Messag
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Figure 7.2.4-2: Adding Transducer C
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Figure 7.2.4-3: Editing DIO Vehicle
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A. Changing Units - Converting tran
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C. Coordinates - Assign correct sig
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switch) Table 7.2.5: Contents of Ti
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Trigger Delay Setup: Check Enable d
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Figure 7.2.5-6: Time Base Shifter S
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Units: Full Scale Estimate - Min: 0
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Figure 7.2.6-2: Burst History Data
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Press Ctrl+3 (or click Run in the T
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8.2. Procedures for Heavy Truck Dut
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d) Turn on the ignition. e) Turn on
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4) Change the IP address field to t
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5) Check to see that the computer c
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e) When all SIC files have been sav
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4) To verify the time setting, go t
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e) Alter the id, mask, value, etc.
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Longitudinal CAN 0x87FF 0x0304 Long
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ULSB 0x98EAFFFBC1FE00 MaxVehSpLm CA
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Figure 9.1.6-2: Performing a ColdSt
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Table 9.2.2-1: Descriptions and Uni
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Channel ID Sensor Format Integer? P
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Channel ID eDAQ Invalid Data Value
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Channel ID Resolution Accuracy Note
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9.3. Appendix C: Additional DAS Not
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e replicated and saved as five iden
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2) Type in “cmd” 3) Type “ipc
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Producing multiple setup files 1) G
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9.4. Appendix D: Checklists and For
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D-96
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9.5. Appendix E: References and Web
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E-3
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E-5
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