10 February 2005
The California Air Resources Board (ARB) has extended the verification of the Johnson Matthey’s CRT™ particulate filter system to include model year 2003-2004 diesel engines. The CRT™ filter was previously verified for use on model year 1994-2002 engines.
The Johnson Matthey CRT™ is now verified for most 1994-2004 model year diesel engines used in all on-road applications operating on ultra low sulfur diesel fuel (max. 15 ppm S). All of these engines are four-stroke, turbocharged, non-EGR equipped, and were certified in California to the 0.1 g/bhp-hr PM emission standard when new.
The CRT™ filter system employs a passively regenerated catalytic diesel particulate filter to achieve an 85% reduction in PM emissions. It has been verified as a “Level 3” device.
Source: California ARB