/ 155 IN-VEHICLE OPACITY TESTING AVL On-The-Road Opacimeter Satisfying the stringent exhaust emissions limits requires sophisticated aftertreatment systems and combustion technologies, which increases the number of parameters to be optimized during development. Vehicle optimization during real-world driving on the road is one important approach for achieving short development times and keeping vehicle quality at a high level. One important criteria for the vehicle quality perceived by the customer is the visible smoke produced during cold start and during acceleration. MEASUREMENT PRINCIPLE The AVL OTR is a pressure-filled partial-flow opacimeter with a special sampling probe for the mobile and online emission measurement of smoke density. The sensor unit (chamber for opacity measurement) is pressure-filled with exhaust gas. This sensor unit is mounted with a special box close to the open tail pipe. A control cable connects the sensor unit with the 24 to 12 VDC voltage converter and the PC’s serial COM interface. The new PC program makes it easy to control the instrument during the tests. Perfect online monitoring with the display of graphs and data post-processing after a test run using the saved data file are now provided by the AVL Instruments PC software. APPLICATION Easy handling, short installation times for the complete system on the vehicle and low power consumption make the OTR Opacimeter the perfect tool for mobile opacity recording during real-world driving tests. BENEFITS AT A GLANCE • Mobile online opacity measurement with high measurement dynamic • Option of two user-defined output channels • Short installation time (plug and play system) • Built-in calibration (linearity check) • Easy handling thanks to small dimensions and light weight • Low power demand (OTR can draw its power from a cigarette lighter) • Easy control and data display via standard notebook PC • Powerful software for easy data post-processing The new PC software makes it easy to display and save time-resolved measurement values on a standard notebook during a test drive. Available online via AVL ePRODUCTS https://shop.avl.com
Solutionskatalog2014_E
To see the actual publication please follow the link above