Do Japanese Cars Have Particulate Filters?
1 Answers
Not all Japanese cars are equipped with particulate filters. Most Japanese cars do not have particulate filters installed because these Japanese engines use natural aspiration, and their exhaust emissions are not highly polluting. However, a small number of vehicles do have particulate filters installed, particularly for those with higher emission levels. 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 matter is subsequently burned off during vehicle operation. How a 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 filters inside capture 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 if a Japanese car has a particulate filter, you can use the following three methods: 1. 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. 2. Check the label on the oil filler cap. If the cap clearly indicates the use of 0W-20 grade oil, it means the vehicle is equipped with a particulate filter. 3. Look at the exhaust pipe behind the three-way catalytic converter to see if there is an additional cylindrical section. If present, that is the particulate filter.
