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arbcombo -- Verification of Johnson Matthey Reformulated CRT™

Posted: 31 Dec 2008 13:06:58
 Verification of the Johnson Matthey Reformulated CRT™ for
On-road Applications


The Air Resources Board has verified the Johnson Matthey
reformulated CRT™ Particulate Filter system for specific 1994
through 2006 model year diesel engines used in on-road
applications. All of these engines are four-stroke, turbocharged,
and were certified in California to the 0.1 gram per brake
horsepower-hour (g/bhp-hr) particulate matter (PM) emission
standard when new. The reformulated CRT™ Particulate Filter
system employs a catalyst and a wall-flow 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 reformulated CRT ™ Particulate Filter
system has been approved may be found on the Verification webpage
within 10 days. 

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