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Emissions Measurement Advancement

Southwest Research Institute (SwRI) and Sierra-CP Partner To Bring Industry Breakthrough

Emissions Measurement SPNS

Regulatory activity surrounding solid particle number has become one of the more difficult challenges for engine and vehicle manufacturers today. 

Sierra and Southwest Research Institute (SwRI) have entered into an agreement to commercialize and produce SwRI’s fully ECE R49-compliant particle number dilution system to provide a solution for  manufacturers and researchers of automobiles, diesel engines, turbines, exhaust aftertreatment systems, motorcycles and mopeds are affected by the new regulations.

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