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Emissions Measurement

Discover a New Way of Particulate Emissions Measurement for Light-Duty Vehicles
 


New article from Sierra in Automotive Testing International Magazine entitled "Emissions Measuremen" explores how combining partial flow sampling and direct exhaust flow measurement provides an ideal solution for particulate emissions measurement from light-duty vehicles.

With the phase-in of LEV-3 this year targeting a 3mg/mile PM limit, followed by a 1mg/ mile PM limit phasing-in by 2025, light-duty (LD) vehicle manufacturers are well aware that traditional constant volume system (CVS)-based particulate matter (PM) measurement methods are not sufficiently robust. Is an all new measurement technology required? No. It turns out that the ideal technology has been in use for decades in the heavy-duty diesel (HDD) engine industry.
 

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