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

Phase 1 – Pilot Test: Design, Testing and Evaluation of a Duty Cycle Data
Collection System.
Phase 2 – Field Test Launch: Fleet Instrumentation, Field Testing Begins,
Initial Data Collection and Data Verification
Phase 3 – Field Test Conduction: On-going Field Test, Data Analysis, and
Data Repository
This document will address the design of the data acquisition system and
sensor suite used in Phases 2 and 3. In addition, it will include all procedures
followed in these phases.
2. LIST OF DATA COLLECTED
The following 60 signals are collected through various sensors on six
instrumented Class-8 trucks.
Table 2.0: List of Signals Collected
Signal Sensor
1 Instantaneous Fuel Economy J1939 Vehicle Data Bus
2 Average Fuel Economy J1939 Vehicle Data Bus
3 Fuel Rate J1939 Vehicle Data Bus
4 Total Fuel Used J1939 Vehicle Data Bus
5 Total Idle Fuel Used J1939 Vehicle Data Bus
6 Current Gear J1939 Vehicle Data Bus
7 Selected Gear J1939 Vehicle Data Bus
8 Output Shaft Speed J1939 Vehicle Data Bus
9 Actual Engine - Percent Torque J1939 Vehicle Data Bus
10 Actual Gear Ratio J1939 Vehicle Data Bus
11 Driver's Demand Engine - Percent Torque J1939 Vehicle Data Bus
12 Percent Load at Current Speed J1939 Vehicle Data Bus
13 Engine Speed J1939 Vehicle Data Bus
14 Engine Oil Temperature J1939 Vehicle Data Bus
15 Fuel Temperature J1939 Vehicle Data Bus
16 Front Axle Speed J1939 Vehicle Data Bus
17 High Resolution Total Vehicle Distance J1939 Vehicle Data Bus
18 Accelerator Pedal Position J1939 Vehicle Data Bus
19 Total Idle Hours J1939 Vehicle Data Bus
20 Maximum Vehicle Speed Limit J1939 Vehicle Data Bus
21 Total Power Takeoff Hours J1939 Vehicle Data Bus
22 Clutch Switch J1939 Vehicle Data Bus
23 Brake Switch J1939 Vehicle Data Bus
24 Cruise Control Enable Switch J1939 Vehicle Data Bus
25 Cruise Control Active J1939 Vehicle Data Bus
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