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DPF DOC Diesel Oxidation Catalyst Washcoat Monolith HC CO Removal

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DPF DOC Diesel Oxidation Catalyst Washcoat Monolith HC CO Removal

Brand Name : WEIFU

Model Number : DOC

Certification : ISO9001, IATF16949

Place of Origin : Wuxi, China

MOQ : 50 PCS

Price : Negotiable

Payment Terms : T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Supply Ability : 7,000,000 PCS per year

Delivery Time : 30-60 days after receiving the deposit

Packaging Details : cartons and plywood cases

Product Name : Catalyst In Truck

Material : Ceramic, metal

Shape : Round, oval, racetrack-shaped

Size : Can be customized

Cell Density : 300/400/600 CPSI

Application : Exhaust treatment

Model : Universal

Emission Standard : Euro 4/5/6

Type : DPF DOC Diesel Oxidation Catalyst Washcoat Monolith HC CO Removal 240x100mm

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DOC Diesel Oxidation Catalyst EU4/5/6 Ceramic/Metal Honeycomb Substrate

DOC (Diesel Oxidation Catalyst)

Used as stand-alone emission control devices, most commercial DOCs were optimized for the reduction of diesel particulate matter emissions. The DOC accomplishes that goal through the removal of the particulate matter’s heavy organic fraction (OF). Certain emission regulations—for instance EU standards for diesel passenger cars—include stringent limits for gaseous HC and CO emissions, which must be reduced over the catalyst as well, often with high efficiencies. DOCs designed for PM/HC/CO control also reduce several unregulated emissions, such as aldehydes and PAHs, as well as the diesel odor.

In their auxiliary catalyst capacity in DPF/SCR systems, DOCs are used primarily as (1) NO2 generating catalysts, and/or (2) “heat-up” catalysts for thermal management of DPF/SCR aftertreatment. An increased NO2/NOx ratio promotes passive DPF regeneration (i.e., oxidation of soot collected in the filter), and can enhance NOx reduction efficiency in SCR catalysts. The role of the heat-up catalyst is to oxidize hydrocarbons—introduced via diesel fuel injection into the exhaust system or post-injection in the engine—to increase the exhaust gas temperature and facilitate active DPF regeneration. If both of these functions are required on a given engine, they are typically combined in one DOC by zone-coating of two DOC formulations optimized for the respective activity.

Emission Legislation PM Limit DOC Application
Light-Duty Vehicles
Euro 2 (1996) PM = 0.08 g/km DOCs introduced on larger size diesel cars.
Euro 3-4 (2000-2005) PM = 0.05-0.025 g/km The main aftertreatment strategy, used on most diesel passenger cars and light trucks.
Euro 5a (2009.09) PM = 0.005 g/km Many cars could meet Euro 5a using a DOC, but DPFs became adopted in some markets (e.g., Germany) for political reasons.
Heavy-Duty Engines
US 1994 PM = 0.10 g/bhp-hr DOC introduced on many light and medium heavy-duty engine models, most with mechanical fuel injection systems. DOCs widely used on urban bus engines due to a more stringent PM limit of 0.07-0.05 g/bhp-hr.
US 1998 PM = 0.10 g/bhp-hr DOC remained common in many light and medium heavy-duty engine models. In some cases, a DOC was no longer required as in-cylinder control was enabled by the replacement of remaining mechanical fuel injection systems with electronically controlled systems required for the lower NOx limits. Urban bus engines continued to rely heavily on DOCs.
US 2004 PM = 0.10 g/bhp-hr The DOC continued to remain popular for light and medium heavy-duty engine models using EGR to comply with NOx limits. Used for all on-highway engines that did not use external EGR (e.g. Caterpillar ACERT engines). Continued to be used on urban bus engines.
Euro IV/V (2005/2008) PM = 0.02 g/kWh DOC technology used on some truck engines with EGR (without urea-SCR).
Nonroad Tier 4i/Stage IIIB (2011-2012) PM = 0.02 g/kWh DOC technology introduced on selected nonroad engine models (mostly those using EGR for NOx control).

WFEC has developed a series of DOCs to meet China Stage VI or Euro 6, non-road mobile machinery Tier IV, and above emission regulations. The DOCs shows more excellent catalytic performance with improving coat materials and coating process technology.

Specification of
Ceramic DOC		 Cell Density (CPSI) Emission Standard
101.6*123.3 300/400/600 Euro 4/5/6
101.6*152.4 300/400/600 Euro 4/5/6
101.6*50 300/400/600 Euro 4/5/6
101.6*90 300/400/600 Euro 4/5/6
110*100 300/400/600 Euro 4/5/6
110*147.3 300/400/600 Euro 4/5/6
118*100 300/400/600 Euro 4/5/6
118*127 300/400/600 Euro 4/5/6
118*152.4 300/400/600 Euro 4/5/6
118*60 300/400/600 Euro 4/5/6
118.4*100 300/400/600 Euro 4/5/6
118.4*127 300/400/600 Euro 4/5/6
118.4*138 300/400/600 Euro 4/5/6
118.4*152.4 300/400/600 Euro 4/5/6
118.4*60 300/400/600 Euro 4/5/6
118.4*70 300/400/600 Euro 4/5/6
130*130 300/400/600 Euro 4/5/6
130*80 300/400/600 Euro 4/5/6
132*125 300/400/600 Euro 4/5/6
143.8*101.6 300/400/600 Euro 4/5/6
143.8*127 300/400/600 Euro 4/5/6
143.8*148 300/400/600 Euro 4/5/6
143.8*152.4 300/400/600 Euro 4/5/6
143.8*76.2 300/400/600 Euro 4/5/6
150*100 300/400/600 Euro 4/5/6
151*115 300/400/600 Euro 4/5/6
158*110 300/400/600 Euro 4/5/6
158*90 300/400/600 Euro 4/5/6
165.1*139.7 300/400/600 Euro 4/5/6
170*100 300/400/600 Euro 4/5/6
190*100 300/400/600 Euro 4/5/6
190.5*100 300/400/600 Euro 4/5/6
190.5*101.6 300/400/600 Euro 4/5/6
190.5*152.4 300/400/600 Euro 4/5/6
197*85 300/400/600 Euro 4/5/6
240*100 300/400/600 Euro 4/5/6
266.7*101.6 300/400/600 Euro 4/5/6
266.7*152.4 300/400/600 Euro 4/5/6
330.2*152.4 300/400/600 Euro 4/5/6
Remark: Other sizes can be customized.

Specification of
Metal DOC		 Cell Density (CPSI) Emission Standard
63.5*100*90 200/300 Euro 4/5/6
63.5*50*40 200/300 Euro 4/5/6
80*90*90 200/300 Euro 4/5/6
89*100*90 200/300 Euro 4/5/6
101.6*115*100 200/300 Euro 4/5/6
130*140*130 200/300 Euro 4/5/6
151*150*140 200/300 Euro 4/5/6
177.8*114.3*127 200/300 Euro 4/5/6
184.5*110*100 200/300 Euro 4/5/6
209.9*110*100 200/300 Euro 4/5/6
209.9*110*100 200/300 Euro 4/5/6
221*150*140 200/300 Euro 4/5/6
235.3*110*100 200/300 Euro 4/5/6
250*100*90 200/300 Euro 4/5/6
260.7*110*100 200/300 Euro 4/5/6
274*160*150 200/300 Euro 4/5/6
277*160*150 200/300 Euro 4/5/6
293*160*150 200/300 Euro 4/5/6
296*200*180 200/300 Euro 4/5/6
350*100*90 200/300 Euro 4/5/6
450*100*90 200/300 Euro 4/5/6
Remark: Other sizes can be customized.

Product Tags:

DPF DOC Diesel Oxidation Catalyst

      

DOC Diesel Oxidation Catalyst

      

porous monolith catalyst

      
Wholesale DPF DOC Diesel Oxidation Catalyst Washcoat Monolith HC CO Removal from china suppliers

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