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arbcombo -- Modification of Johnson Matthey CRT Verification

Posted: 16 Nov 2009 14:16:16
Modification of Johnson Matthey CRT Verification. 

The Air Resources Board verified the Johnson Matthey
Continuously Regenerating Technology (CRT) Particulate
Filter as a Level 3 Plus passively regenerating diesel emission
control system for use with on-road engines model years 1994
through 2006 and certified with particulate matter emissions of
0.1 grams per brake horsepower hour (g/bhp-hr) or less.  That
verification has since been modified requiring that on-road
engines be certified with oxides of nitrogen (NOx) or non-methane
hydrocarbons plus NOx emissions greater than 
3.2 g/bhp-hr.  Specific conditions for which the CRT has
been approved may be found in the Executive Order 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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