DPF system

This is a post-treatment system used for purifying exhaust gases. DPFs use a filter to capture particulate matter (PM), soot, and ash. Exhaust gases such as carbon dioxide and nitrogen oxide are passed through this filter.
The DPF system consists of a filter element, a catalyst called a "diesel oxidation catalyst" (DOC), an exhaust gas temperature sensor, and a differential pressure sensor used to detect the amount of PM collected by the filter.

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