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

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Fig. 10. NGK NOx/O2 Sensors<br />

Fig. 11. Omega Temperature Probe<br />

In addition, a RaceLogic VBOX II was used to provide GPS-based in<strong>for</strong>mation including<br />

coordinates, velocity, and acceleration.<br />

1.3.2 Development of a Prototype Data Acquisition System (DAS).<br />

Four different DASs were identified as potentially suitable <strong>for</strong> the Pilot Test, and the SOMAT eDAQ<br />

was specified and selected as the Pilot Test DAS (shown in Fig. 12). This system was used to<br />

benchmark the potential Field Test DASs that were tested during the Pilot Test. Several features<br />

influenced its selection <strong>for</strong> the pilot test, including its modular <strong>for</strong>mat, its ability to interface with a<br />

variety of sensors, the number of channels available, its ability to synchronize multiple units, and its<br />

rugged housing.<br />

Fig. 12. SOMAT EDAQ DAS<br />

1.3.3 Installation of the DAS Prototype and Sensors in One Long-Haul <strong>Truck</strong><br />

Phase 1 sensor integration onto the test vehicle took place at Dana’s Tech <strong>Center</strong> in Kalamazoo,<br />

Michigan, and was completed in mid-October 2005. Further details regarding the instrumentation<br />

schedule and sensors are given in the Pilot Test Letter <strong>Report</strong> (Appendix A). Concrete ballast was<br />

also acquired to bring the test vehicle to 80,000 lbs Gross Vehicle Weight Rating (GVWR). During<br />

14

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