In order to meet the requirements of National V emissions, some diesel vehicles have started to be equipped with DPF since National IV emissions. Therefore, starting from the National Emission Standard V, DPF has become a standard configuration for small diesel vehicles. DPF has only been used in China for nearly two years, and many people think it is a new technology. In fact, DPF has become an international standard as early as 2009, and this technology has been applied before it became an international standard, so we are not guinea pigs. It can also be said that the technology is already very mature. It can be said with certainty that as long as diesel and engine oil are used according to the prescribed specifications, DPF can have the same lifespan as a car.

What is DPF ?

DPF is a diesel particulate filter installed in the exhaust system of diesel engines to reduce particulate matter in the exhaust through filtration. The pollution of diesel engines mainly comes from three aspects - particulate emissions, hydrocarbons (HCx), nitrogen oxides (NOx), and sulfur. Most of the particulate emissions (cigarette ash) are composed of tiny carbon or carbide particles (with a size less than 4-20 μ m). DPF is a device specifically designed to collect and process particulate emissions.

There are two technical routes for DPF, one is active combustion regeneration used on MUX, which requires a temperature of over 500 degrees Celsius. Another type is called CDPF, such as the CDPF used in Mercedes Benz and Korean SsangYong cars, which uses catalysts and relies on exhaust temperature (200-300 degrees) to complete regeneration. However, the regeneration speed is slow and some environments cannot be used normally, such as when the altitude is above 3500 meters, blockage may occur, affecting normal driving.