Universal Diesel Oxidation Catalyst (DOC Purifier)

Universal Diesel Oxidation Catalyst (DOC Purifier)

Diesel Oxidation Catalysts (also known as a DOC) is a filter that is installed in the Exhaust system of diesel engines, these are designed to remove high levels of Carbon Monoxide (CO) and Hydrocarbons (HC) and some diesel particulate matter (DPM).

Why should we be concerned about Carbon Monoxide, Hydrocarbons and DPM?

Carbon Monoxide is a poisonous, colourless, odorless and tasteless gas. In large amounts this can overcome you in minutes, and without warning, causing you to lose consciousness and suffocate.

Hydrocarbons can penetrate deep into the respiratory system, producing inflammation, narrowing of the airways leading to deprivation of oxygen for ever day body functions.

Diesel Particulate Matter (DPM) can be so fine (less than 1 micron in diameter) that it penetrates deep into the respiratory system which can lead to heart and lung damage.

These three toxic elements can cause considerable damage to the human body. Therefore that is our aim of emission control - to provide a solution for eliminating toxic exhaust emissions.

Advantages of DOC:

• Highly durable metallic core
• Simple yet cost effective solution
• Low maintenance (effectively maintenance free) (back pressure is your guide)
• Available as an add-in unit to an existing system on a project based requirement. Because of this they are excellent for a temporary solution when Hiring Equipment and needing to follow site regulations/requirements when completing projects.
• Can be adapted to suit bespoke OEM applications.
• Can be incorporated into a Flowtech silencer - please contact us about these.

Typical Analysis:

90%+ reduction in Carbon Monoxide (CO)

80%+ reduction in Hydrocarbons (HC)

25%+ reduction in Diesel Particulate Matter (DPM)

*Best catalyst performance occurs between 250 & 300 degrees celcius.

*Designed primarily for 4 stroke diesel engines. 

Applications in which DOC's can be a solution to your requirements:

• Operating machinery in confined spaces.
• Operating machinery in areas with high pedestrian activity.
• Governmental and site specific regulations/requirements.
• OEM bespoke solutions.

Generally used in:

• Industrial generators
• Smaller generators
• Firepumps
• Mobile Equipment

Available in many different Inlet/Outlet sizes, from 1½" (38mm) to 6" (152mm).

If you need help selecting the correct DOC for your application, please contact us, and have answers to the below questions.

What is the engine displacement (litres)?

Does it have a turbo?

Does it have an aftercooler or charge-air cooler?

What is the current exhaust pipe size?

What is the application of vehicle/machine?

What is the emission reduction you are trying to achieve?

Please look at the table below to work out which DOC is suitable for your equipment/machinery. If you have any questions, please don't hesitate to contact us.