Does BMW Have a Particulate Filter?
1 Answers
Some BMW models are equipped with particulate filters, but this depends on the specific model. For example, the 2020 BMW X3 comes with a particulate filter, while the 2021 BMW 5 Series does not. A particulate filter is a ceramic filter installed in the diesel engine's exhaust system that captures particulate emissions before they enter the atmosphere. It can reduce soot emissions from diesel engines by more than 90%, and the captured particulate matter is subsequently burned off during vehicle operation. 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 particulate filter through a dedicated pipe. The densely arranged bag-type filter inside captures the carbon particles on a metal fiber felt filter. When the accumulated particulate matter reaches a certain level, the burner at the end automatically ignites, burning off the captured carbon particles and converting them into harmless carbon dioxide. To check whether a BMW has a particulate filter, you can use the following three methods: 1. Check the Owner's Maintenance Manual and Owner's User Manual to see if there is a particulate filter function. Additionally, carefully review the fault codes in the manual to check for a "Particulate Filter" warning light. 2. Look at the label on the oil filler cap. If the cap clearly indicates 0W-20 grade oil, it means the vehicle is equipped with a particulate filter. 3. Check whether there is a cylindrical section behind the catalytic converter on the exhaust pipe. If present, it is the particulate filter.
