As automakers begin to develop and certify vehicles that meet the California Air Resources Board LEV II and Environmental Protection Agency Tier II Regulations, emissions test cells must be designed and implemented that are capable of accurate low-level measurements. A new test cell has been installed at Ford Motor Company for use in testing vehicles that meet the stringent Partial Zero Emission Vehicle (PZEV) tailpipe requirements (NMOG = 10 mg/mile, NOx = 20 mg/mile). This test cell includes a redesigned Bag Mini-Diluter (BMD), improved analytical benches, an ultrasonic exhaust flow meter with an integrated tailpipe pressure control system, a conventional Constant Volume Sampler (CVS), and a moveable electric dynamometer. The Bag Mini-Diluter will be used as the primary sampling system for the tailpipe measurements. The technical evolution of the Bag Mini-Diluter sampling system continues at a rapid pace. As discussed in various papers in the past, the BMD has several inherent advantages over the traditional CVS system. The moveable electric dynamometer enables the test cell to be configured so that the vehicle is moved to the test equipment rather than moving the test equipment to the vehicle.
Advanced emissions test site for confident PZEV measurements
Fortschrittliche Emissionsprüfzelle für Vertrauensmessungen des Partialnullemissionsfahrzeuges (PZEV)
2002
16 Seiten, 15 Bilder, 96 Tabellen, 8 Quellen
Aufsatz (Konferenz)
Englisch
Advanced emissions test site for confident PZEV measurements
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British Library Conference Proceedings | 2002
|Advanced Emissions Test Site for Confident PZEV Measurements
SAE Technical Papers | 2002
|Update on emissions measurement performance of a PZEV test cell
Kraftfahrwesen | 2006
|Update on Emissions Measurement Performance of a PZEV Test Cell
SAE Technical Papers | 2006
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