The Impact of Particulate Filters on Vehicles?
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A particulate filter is a ceramic filter installed in the exhaust system of diesel engines, designed to capture particulate emissions before they enter the atmosphere. It can reduce the soot produced by diesel engines by more than 90%, and the captured particulate emissions are subsequently burned off during vehicle operation. Diesel engine pollution mainly comes from three sources—particulate emissions, hydrocarbons (HCx), nitrogen oxides (NOx), and sulfur. Among these, particulate emissions (soot) are largely composed of tiny particles of carbon or carbon compounds (smaller than 4-20μm in size). How the particulate filter works: The diesel particulate filter is coated with metals such as platinum, rhodium, and palladium. The black smoke containing carbon particles emitted by the diesel engine enters the exhaust particulate filter through a dedicated pipe. After passing through densely arranged bag filters inside, the carbon particles are adsorbed onto a filter made of metal fiber felt. When the adsorption of particles reaches a certain level, the burner at the end automatically ignites, burning off the adsorbed carbon particles and converting them into harmless carbon dioxide for release. To check if your vehicle has a particulate filter, you can use the following three methods: Refer to the and to see if there is a particulate filter function. Additionally, carefully check the fault codes in the manual to see if there is a "Particulate Filter" warning light indicator. Check the label on the oil cap. If the oil cap clearly states 0W-20 grade oil, it indicates that a particulate filter is installed. Look behind the catalytic converter on the exhaust pipe to see if there is an additional cylindrical section. If present, that is the particulate filter.
