Diesel Particulate Filters, also known as DPFs, are exhaust . aftertreatment devices that significantly reduce emissions from diesel fueled vehicles and equipment. DPFs typically use a porous ceramic or cordierite substrate or metallic filter, to physically trap particulate matter (PM) and remove it from the exhaust stream.
A diesel particulate filter (DPF) is a filter fitted to cars and it is made to capture and store exhaust soot. The soot is a naturally occurring part of the combustion process, but larger pieces can be dangerous for an engine, so the filter removes this risk.
A DPF is designed to collect the soot that is created when diesel is burned, preventing harmful particles from being pumped out into the atmosphere. All post-2009 diesel cars that comply with
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what is a diesel particulate filter
