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

March and provided to the ORNL Program Office for Transportation Energy Efficiency as well as
Mr. Lee Slezak (DOE Office of FreedomCar and Vehicle Technologies – OFCVT). In follow-up to
the draft report, a conference call among project partners was held on April 7, 2005 to review the
Performance Measures. After some refinement, a finalized performance measurement commitment
sheet was prepared and circulated to the partners in mid-April, 2005. This sheet was used for
partners to commit to providing the associated sensors for collecting this data. The completed sheets
were received by ORNL from partners in May, 2005.
3.3.2.3 Data Bus Information: In May, 2005, the data buses (J1939 and J1708) on the test vehicle
(Peterbilt 379) were queried to determine the extent of performance measurement data available.
The following information was determined to be available from the data bus:
J1939 J1708
Electronic Engine Controller #2 Electronic Transmission Controller #1
Electronic Retarder Controller #1 Electronic Transmission Controller #2
Electronic Transmission Controller #2 Electronic Engine Controller #3
Electronic Engine Controller #3 Engine Temperature
Engine Temperature Engine Fluid Level/Pressure
Engine Fluid Level / Temperature Cruise Control / Vehicle Speed
Cruise Control / Vehicle Speed Inlet / Exhaust Conditions
Fuel Economy Electronic Engine Controller #2
Inlet / Exhaust Conditions Electronic Engine Controller #1
Electronic Transmission Controller #1
Electronic Engine Controller #1
3.3.2.4 Pilot Test Sensor Data: A meeting was held July 20, 2005 with ORNL engine’s specialists to
discuss the various engine sensors required for the project. It was determined that mass air flow will
be taken from the data bus, exhaust temperature will be taken using a type-K thermocouple installed
in the exhaust manifold and NOx will be measured in the combined exhaust stream.
A finalized set of 105 channels of data was completed in July, 2005. Appendix A lists the Pilot Test
Data Channels.
3.3.2.5 Aerodynamics Data: Several conference calls were conducted in October, 2005 between
ORNL, ANL, and Lawrence Livermore National Laboratory (LLNL) staff concerning the collection
of aerodynamic data, and the placement of the weather sensor. Timing and funding issues precluded
installation of any aero-sensors (a weather station intended to collect weather based data including
wind-speed and direction were already included). Additionally, some discussions focused on wind
tunnel calibration of a candidate vehicle, and the potential addition of pressure ports. It was
suggested that if LLNL could find additional funding, that the addition on aero-sensors could be
considered for the field test.
Discussions on the collection of aero-data from the field test were resumed in February, 2006.
Because the primary goal for the HVDC Project is to generate Duty Cycle information on a class-8
tractor-trailer operating in a long-haul mode for an extended period of time, detailed aero-data
collection was not required. Some additional data (e.g., geographic location, type of location,
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