CRT® Continuously Regenerating Technology Data Sheet (PDF 139 KB)

The CRT® Filter—Continuously Regenerating Technology—Johnson Matthey’s signature technology has revolutionized modern diesel emissions reduction. The first filter verified for the EPA’s voluntary retrofit program, the CRT filter has become the industry benchmark for Heavy Duty Diesel Retrofit Technology. The CRT system reduces HC, CO and PM by 90% or more.Technology DrivenThe CRT particulate filter utilizes Johnson Matthey’s patented process which oxidizes soot in the presence of NO2 at a lower temperature than with oxygen. This lower temperature is compatible with typical diesel exhaust temperatures, so no supplemental heat is required.The device is made up of two chambers. The first contains a substrate coated with a proprietary, highly-active platinum oxidation catalyst designed to oxidize a portion of the NO in the exhaust to NO2.NO2 generation is the key to the oxidation of soot collected by the wall flow filter and the heart of the Johnson Matthey patent. The catalyst also converts CO and HC into CO2 and H2O.In the second chamber, exhaust flows through a wall-flow filter, where gaseous components pass through, but soot is trapped on the walls of the filter. The trapped soot is then destroyed by the NO2 produced by the catalyst in the first chamber. Featuring• Reduces HC, CO & PM over 90%.• Verified by EPA and CARB.• Modular design for ease of installation and routine service.• No supplemental heat or fuel required. • Operates with Ultra Low Sulfur diesel, <50ppm, now widely available nationally. • Available with the CRTdm diagnostic module, the only device with data-logging and alarm capability.• Maintenance is minimal. Clean the filter element approximately every 60,000 - 100,000 miles or as signaled from the CRTdm.Proven SuccessFor 40 years, Johnson Matthey has been the global leader in the emission control industry. And when it comes to performance, JM’s CRT System has proven itself where it matters most – on the road. With 80,000 CRT systems worldwide, Johnson Matthey retrofit systems offer s performance and confirmed durability. CRT® Filter SystemJohnson Matthey Sets the Standardfor Diesel Particulate FiltersCUTAWAY VIEW OFTHE CRT® DIESEL PARTIUCLATE FILTER100806040200CRT® TEST RESULTS% ReductionHC CO PM NOxHEAVY DUTY DIESEL TRANSIENT FTPTYPICAL TEST RESULTS FOR THE CRT®DIESEL PARTICULATE FILTERTest Engine Emission Reductions (%)MY Make THC CO PM 1999 Caterpillar 3126 88% 99% 88%1995 Cummins M11 91% 89% 95% 1998 DCC Series 60 95% 94% 87% 1999 DCC Series 50 100% 72% 90%DIESEL RETROFIT EMISSION CONTROL SOLUTIONSJohnson Matthey