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arbcombo -- Extension of the JM CRT

Posted: 12 Sep 2012 10:27:54
Johnson Matthey Incorporated’s Continuously Regenerating
Technology (CRT®) Verification Extension for On-Road

The Air Resources Board (ARB) has granted an extension for
Johnson Matthey Incorporated’s CRT® particulate filter for use
with certain 1994 through 2006 on-road diesel vehicles.  The
extension includes new diesel oxidation catalyst and filter
sizes, and expands the applicability of the CRT® particulate
filter to higher horsepower engines through upsizing.  The 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 CRT® particulate filter
system has been approved may be found in the Executive Order at: 


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