Why can't the Fengjun 5 complete the stationary self-cleaning?

[LeLuke]

Fengjun 5 cannot complete the stationary self-cleaning for the following reasons: 1. Particulate filter clogged: At this time, due to internal clogging of the DPF, the exhaust flow resistance is very high, which affects the normal operation of the engine. 2. Particulate filter full. Due to the generation of soot particles, the soot particles inside the DPF gradually increase, increasing the exhaust resistance, and the engine's fuel consumption and power are affected by the increase in exhaust back pressure. Below is an expansion of the particulate filter regeneration process: A large amount of soot particles accumulate inside the DPF, affecting the exhaust back pressure, making it difficult for the exhaust gas to be discharged, greatly limiting the engine's power and fuel economy. The engine control unit, based on the signal from the exhaust pressure sensor, controls the engine to perform the soot cleaning and regeneration process on its own, burning the soot particles accumulated inside the DPF at high temperatures.