Johnson Matthey’s Mining CRT is the most advanced and cost-effective way to reduce particulate AND NO2 for the healthiest underground work environment.
Johnson Matthey was the first to develop and patent the Continuously Regenerating Trap (CRT®) technology, which combines:
A properly functioning DPF will have excess NO2 emissions to ensure continuous regeneration of the DPF. The Mining CRT adds on a specially formulated catalyst to reduce NO2 to levels below engine out emissions.
The intervals at which ash cleaning has been shown to extend well beyond engine service intervals, minimizing equipment downtime.
Mining CRT system | Model A | Model B | Model C | Model D | Model E |
Active NO2 control | Yes | Yes | Yes | No | No |
Number of filters | 2 | 1 | 1 | 1 | 1 |
Typical tailpipe NO2 | < baseline | < baseline | within 20% of baseline | within 40% of baseline | within 60% of baseline |
Verification for on and off highway |
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| CARB tested and verified | CARB and VERT tested and verified | CARB tested and verified |
Regeneration requirements | 260°C for 40% of duty cycle | 260°C for 40% of duty cycle | 230°C for 40% of duty cycle, or 300°C for 10% of duty cycle | 260°C for 40% of duty cycle | 230°C for 40% of duty cycle, or 300°C for 10% of duty cycle |
 | Mining CRT technology for low-NO2 control |
