Glossary / General

diesel oxidation catalyst

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A diesel oxidation catalyst is an emissions device that helps clean up exhaust gases. It works with other emissions parts to reduce harmful stuff coming out of the tailpipe.

Technical Definition

A diesel oxidation catalyst (DOC) is an emissions-control component that helps convert certain exhaust pollutants into less harmful compounds. It’s often used alongside a diesel particulate filter (DPF) and can assist with exhaust chemistry for regeneration.

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