Working Together for Cleaner Air
Formerly Verified Technologies List
| Manufacturer | Technology | Applicability | Reductions (%) | |||
|---|---|---|---|---|---|---|
| PM | NOx | HC | CO | |||
| Clean Diesel Technologies, Inc. (CDTi) (Formerly Engine Control Systems Limited) |
AZ Purimuffler or AZ Purifier Diesel Oxidation Catalyst (DOC) with ECS Closed Crankcase Ventilation (CCV) system with Low Sulfur Diesel Fuel (LSD) |
Highway, heavy heavy-duty, 4-cycle, mechanically or electronically injected, turbocharged or naturally aspirated, originally manufactured from 1991 through 2004 model years which meet a 5 or 4 g/bhp-hr NOx standard with open crankcase ventilation and no after treatment engines | 402 | n/a | 75 | 60 |
| Clean Diesel Technologies, Inc. (CDTi) (Formerly Engine Control Systems Limited) |
AZ Purimuffler or AZ Purifier Diesel Oxidation Catalyst (DOC) with Low Sulfur Diesel Fuel (LSD) |
Highway, heavy heavy-duty, 4-cycle, model years 1991 - 1993 Cummins engines originally manufactured without exhaust after treatment, turbocharged or naturally aspirated, non-EGR engines | 35 | n/a | 70 | 40 |
| Clean Diesel Technologies, Inc. (CDTi) (Formerly Engine Control Systems Limited) |
AZ Purimuffler AZ Purifier |
Highway, heavy duty, 2-cycle engines | 20 | n/a | 50 | 40 |
| Clean Diesel Technologies, Inc. (CDTi) (Formerly Engine Control Systems Limited) |
AZ Purimuffler AZ Purifier |
Highway, heavy duty, 4-cycle engines | 20 | n/a | 50 | 40 |
| Manufacturer | Technology | Applicability | Reductions (%) | |||
|---|---|---|---|---|---|---|
| PM | NOx | HC | CO | |||
| Clean Diesel Technologies, Inc. (CDTi) (Formerly Engine Control Systems Limited) |
AZM Purimuffler or AZM Purifier Diesel Oxidation Catalyst (DOC) | Highway, heavy-duty, 4 cycle engines 1991 through 2006 | 20 | n/a | 50 | 40 |
| Clean Diesel Technologies, Inc. (CDTi) (Formerly Engine Control Systems Limited) |
AZM Purimuffler or AZM Purifier Diesel Oxidation Catalyst (DOC) with ECS Closed Crankcase Ventilation (CCV) System | Highway, heavy-duty, 4-cycle, mechanically or electronically injected, turbocharged or naturally aspirated, originally manufactured from 1991 through 2006 model years which meet a 5 or 4 g/bhp-hr NOx standard. | 25 | n/a | 50 | 40 |
| Clean Diesel Technologies, Inc. (CDTi) (Formerly Engine Control Systems Limited) |
Purifilter Plus (Diesel particulate filter on the engine, electrical panel for active regeneration at the garage/maintenance yard) Original verification letter (PDF) (1 pg; 500K, March 25, 2009) Verification removal letter (PDF) (1 pg; 300K, May 26, 2010) |
Highway; heavy, medium, and light heavy-duty; Urban Bus; 4-cycle; model years 1994 - 2006; turbocharged or naturally aspirated; EGR engines | 90 | n/a | 85 | 75 |
| Manufacturer | Technology | Applicability | Reductions (%) | |||
|---|---|---|---|---|---|---|
| PM | NOx | HC | CO | |||
| Caterpillar, Inc. | Catalyzed Converter/Muffler (CCM) | Highway, heavy-heavy and medium-heavy duty, 4 cycle, non-EGR, model year 1998 - 2003, turbocharged or naturally aspirated engines | 20 | n/a | 40 | 20 |
| Clean Diesel Technologies, Inc. | Platinum Plus Purifier System (fuel borne catalyst plus DOC) |
Highway, medium heavy- and heavy heavy-duty, 4 cycle, model year 1988 - 2003, turbocharged or naturally aspirated engines | 25 to 50 | 0 to 5 | 40 to 50 | 16 to 50 |
| Clean Diesel Technologies, Inc. | Platinum Plus Fuel Borne Catalyst/Catalyzed Wire Mesh Filter (FBC/CWMF) System | Highway, medium heavy-duty, 4 cycle, model year 1991 - 2003, non-EGR, turbocharged or naturally aspirated engines | 55 to 76 | 0 to 9 | 75 to 89 | 50 to 66 |
| Engelhard | DPX Catalyzed Diesel Particulate Filter | Highway, heavy-duty, 4 cycle, model year 1994 - 2002, turbocharged or naturally aspirated engines | 60 | n/a | 60 | 60 |
| Engelhard | CMX Catalyst Muffler | Highway, heavy-duty, 2 cycle engines | 20 | n/a | 50 | 40 |
| Johnson Matthey | Partial Continuously Regenerating Technology2 (PCRT2) Particulate Filter | Highway, heavy-heavy and medium-heavy duty, 4 cycle, non-EGR, model year 1988 - 2003, turbocharged or naturally aspirated non-urban bus engines | 50 (MY1988-1993) 45 (MY1994-2003) |
n/a | 92 | 68 |
| Johnson Matthey | Catalyzed Continuously Regenerating Technology (CCRT) Particulate Filter | Highway, heavy-duty, urban bus, 4 cycle, non-EGR model year 1994 - 2006, turbocharged or naturally aspirated engines. | 90 | n/a | 95 | 85 |
| Johnson Matthey | Continuously Regenerating Technology (CRT) Particulate Filter | Highway, heavy-duty, 4 cycle, model year 1994 - 2006, turbocharged or naturally aspirated engines | 90 | n/a | 95 | 85 |
| Johnson Matthey | CEM Catalyst Muffler | Highway, heavy-duty, 2 cycle engines | 20 | n/a | 50 | 40 |
| Paceco Corporation | MES diesel particulate filter (MES-DPF) | Pre-1996 nonroad, 4-cycle, heavy-duty diesel engines in the 225 - 450 kW (NR7) power range in electrical generation applications | 39 | n/a | 95 | 90 |
| PUREM | PMF Green-Tec Particulate Filter/Catalyst | Highway, medium-heavy duty up to 280 hp, 4 cycle, non-EGR, model year 1998 - 2003, turbocharged or naturally aspirated engines | 90 | n/a | 90 | 85 |
| PUREM | PMF Green-Tec 230 Particulate Filter/Catalyst | Highway, medium-heavy duty up to 230 hp, 4 cycle, non-EGR, model year 1998 - 2003, turbocharged or naturally aspirated engines | 90 | n/a | 95 | 80 |
Note: For after-treatment devices the reductions are based on the installation of the retrofit technology on engines that were originally produced without diesel oxidation catalysts or diesel particulate filters.