Does the Envision S have a particulate filter?
3 Answers
Envision S has a particulate filter. The particulate filter can reduce the particles in the engine exhaust emissions, recycle them, reduce vehicle exhaust emissions, increase the environmental protection of the vehicle, and reduce pollution to the atmosphere. To check whether the vehicle is equipped with a particulate filter, you can use the following three methods: Check the "Owner's Maintenance Manual" and "Owner's User Manual" to see if there is a particulate filter function. In addition, you can carefully check the fault codes in the manual to see if there is a "particulate filter" fault light indicator. Check the label on the oil filler cap. If the oil filler cap clearly indicates 0W-20 grade oil, it means that a particulate filter is installed. Check whether there is a cylindrical section on the exhaust pipe behind the three-way catalytic converter. If there is, that is the particulate filter. Location of the particulate filter: The particulate filter is located behind the three-way catalytic converter and in front of the muffler, surrounded by the front and rear oxygen sensors.
As a long-time Buick owner who has driven several models, I can confirm that the Envision S is indeed equipped with a particulate filter. This device is installed on the exhaust pipe specifically to capture carbon particles from the exhaust, ensuring compliance with China's National VI-B emission standards. During my last maintenance, I specifically checked the service manual - all 1.5T and 2.0T variants come with it. Think of it as putting a mask on your exhaust pipe, though the downside is potential clogging over time. Special reminder for owners who frequently make short commutes: prolonged low-speed driving can easily trigger clogging warnings. If you see the engine light or notice sudden fuel consumption increases, it's likely time for particulate filter regeneration.
After studying the Envision S's emission system, I found its particulate filter is integrated behind the three-way catalytic converter. All new vehicles meeting China 6B standards must now be equipped with this, which is essentially a ceramic filter. In practical use, it's important to note that if you frequently drive in slow city traffic, it's recommended to take the car on a highway run weekly to raise exhaust temperatures above 550°C, which burns off carbon particles. Last winter, my cousin's vehicle experienced clogging due to low-temperature short-distance driving and ultimately had to pay 200 yuan at the dealership for active regeneration.
