Diesel Oxidizing Catalyst (DOC) After exhaust first leaves the engine, its first stop is usually through the diesel oxidizing catalyst. The purpose of the DOC is to facilitate a chemical reaction that converts carbon monoxide and hydrocarbons into harmless carbon dioxide and water vapor before it is released into the atmosphere.

Nov 1, 2021 · With all the focus on DPFs, the DOC is often forgotten as a part of your aftertreatment system. The DOC is the first line of defense against harmful chemicals in diesel engine exhaust, and it should be cared for and maintained just like the rest of your truck's emissions system.

DPFXFIT is a line of aftermarket Diesel Particulate Filter (DPF) and Diesel Oxidation Catalysts (DOC) designed and manufactured by GESi® as a direct replacement to the most common OEM aftertreatment systems.

The Cummins Particulate Filter contains the Diesel Particulate Filter (DPF) which collects and oxidizes carbon to remove particulate matter (PM) by more than 90%; the Diesel Oxidation Catalyst (DOC) aids in this process and is also contained in the Cummins Particulate Filter.

Oct 8, 2024 · Both DPF and DOC filters play a critical role in your truck’s performance, fuel efficiency, and emissions compliance. Understanding the difference between these filters—and knowing when they need service—can save you time, money, and headaches down the line.

Aug 27, 2012 · Plumbed into the exhaust stream of many diesel powered off-road machines you buy today is either a diesel oxidation catalyst (DOC) or a diesel particulate filter (DPF) or both. Ultra-low...

Apr 18, 2018 · The DOC is the first device in the after treatment system. It is a flow-through filter that contains precious metals to start the oxidation of hydrocarbons, carbon monoxide and unburned fuel and oil. Both the DOC and the DPF are honeycomb ceramic filters.

Jun 25, 2021 · What Does the DOC Stand for in Diesel Engines? The DOC in a diesel engine stands for Diesel Oxidation Catalyst. The DOC is designed to convert carbon monoxide and hydrocarbons into carbon dioxide and water. It essentially breaks down pollutants in the exhaust system from a diesel engine which helps reduce particulate matter.

Sep 27, 2023 · To reduce the amount of diesel emissions, trucks built since 2007 are equipped with an aftertreatment system composed of a diesel particulate filter (DPF) and a diesel oxidation catalyst (DOC) that trap pollutants and remove them from a truck’s exhaust.

Feb 10, 2024 · The reduction of harmful emissions in diesel engines involves a complex, yet finely tuned system comprising the Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalytic Reduction (SCR), and Diesel Exhaust Fluid (DEF).