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arbcombo -- Verification of the Donaldson SEF

Posted: 09 Apr 2009 15:54:39
Donaldson SEF System for On-Road. 

The Air Resources Board has verified the Donaldson Semi-Active
Electric Filter (SEF) Muffler System for select 1991 through 2006
model year diesel engines used in on-road applications.  All of
these engines are four-stroke, turbocharged or naturally
aspirated, and were certified in California to the 0.25 grams per
brake horsepower-hour (g/bhp-hr) particulate matter (PM) emission
standard when new.  The SEF Muffler System employs a diesel
oxidation catalyst, heating element and an uncatalyzed diesel
particulate filter with a back pressure monitor to achieve an 85
percent reduction in particulate matter emissions, qualifying it
for Level 3 plus verification.  Specific engine families and
conditions for which the SEF Muffler System has been approved may
be found in the Executive Order on our webpage at:
http://www.arb.ca.gov/diesel/verdev/verdev.htm

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