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arbcombo -- Verification of ECS Purifilter for Off-road

Posted: 21 Oct 2008 14:16:41
Conditional Verification of the ECS PurifilterTM for Off-road

The Air Resources Board conditionally verified Engine Control
Systemsí PurifilterTM as a Level 3 Plus passively regenerated
diesel emission control system for use with off-road equipment
powered by certain off-road diesel engines with model years
between 1996 and 2008.  Approved engines are certified to a
particulate matter emission level equal to or less than 0.2
grams per brake horsepower-hour, are rated to at least 50
horsepower and at most 750 horsepower, and are not equipped with
exhaust gas recirculation systems.  PurifilterTM uses a catalyzed
silicon carbide wall-flow filter for regeneration to achieve an
85 percent reduction in emissions of diesel particulate matter. 
Specific conditions for which PurifilterTM has been approved may
be found in the conditional verification letter which will be
posted within ten days on the ARB website at
http://www.arb.ca.gov/diesel/verdev/verdev.htm . 

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