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arbcombo -- Donaldson SEF Muffler System Posted: 06 Nov 2012 10:47:19
Verification of the Donaldson SEF Muffler System for On-road Applications. The Air Resources Board (ARB) has modified the verification of the Donaldson Semi-Active Electric Filter (SEF) Muffler System for diesel oxidation catalyst substrate change and emissions device monitor Phase 1 upgrades 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 emission standard when new. The SEF Muffler System employs a diesel oxidation catalyst, heating element and an un-catalyzed 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 along with the Executive Order will be posted within ten days on ARB website at: http://www.arb.ca.gov/diesel/verdev/companies/donaldson/sef.htm You are receiving this single arbcombo email because you are a subscriber to or have made a public comment to one or more of the following lists: diesel-retrofit, ms-mailings.