A controller area network (CAN) module was included in the chassis to enable communications with the engine electronic control module (ECU). cRIO modules providing a variety of analog, digital and thermocouple I/O were selected based on operational performance requirements. The hardware system was based on a National Instruments' Compact RIO (cRIO) platform. The Client's main requirements, which were not met by the existing commercial system, were to achieve a better manual mode of operation (not built around “Automated Test Sequences”) with the operator in complete control of all parameters at all times, and provide a simple data output format readable by any data analysis program. They engaged DMC to help develop a competing, custom-built system that better suited their operational requirements, budget, and data analysis methods. The client had previously automated an existing test cell using a commercially available, off the shelf package for dynamometer testing. DMC started this project by listening carefully to the Client's specific needs for their dynamometer and emissions test cells.
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