Active regeneration type diesel particulate filter based on pressure regulation and control

Abstract

The invention relates to an active regeneration type diesel particulate filter based on pressure regulation and control. The active regeneration type diesel particulate filter comprises a combustion cavity, a DPF body, an ECU control unit, a spark plug, an exhaust pipe arranged at the rear end of the DPF body, a front-end pressure sensor, a middle pressure sensor, a rear-end pressure sensor, a first pressure regulating pipeline, a second pressure regulating pipeline, a third pressure regulating pipeline and a fourth pressure regulating pipeline, wherein the front-end pressure sensor, the middle pressure sensor and the rear-end pressure sensor are arranged in the DPF body, and the first pressure regulating pipeline, the second pressure regulating pipeline, the third pressure regulating pipeline and the fourth pressure regulating pipeline are arranged on the periphery of the DPF body. The ECU control unit is separately connected with the first pressure regulating pipeline, the second pressure regulating pipeline, the third pressure regulating pipeline, the fourth pressure regulating pipeline, the front-end pressure sensor, the middle pressure sensor, the rear-end pressure sensor and the spark plug. Compared with the prior art, the active regeneration type diesel particulate filter based on pressure regulation and control has the advantages that the pressure difference of the front end and the rear end in the diesel particulate filter can be adjusted, and the device is compact in structure.

Description

technical field [0001] The invention relates to the field of engine tail gas particle emission control, in particular to an active regenerative diesel engine particle filter based on pressure regulation. Background technique [0002] With the upgrading of motor vehicle emission regulations, the emission requirements of vehicles are getting higher and higher, and it is very important to effectively deal with the harmful components in vehicle exhaust. [0003] Diesel particulate filter is an important part of treating particulate matter in exhaust gas. During the use of diesel particulate filter, it is inevitable that the particle filter will be clogged, so the filter needs to be regenerated. Generally, in the active regeneration process, the active regeneration process due to combustion will produce a large temperature change, which will lead to a sudden increase in the air pressure difference between the front and rear ends, which will affect the exhaust gas emission and the...

AI Technical Summary

Problems solved by technology

Generally, in the active regeneration process, the active regeneration process due to combustion will produce a large temperature change, which will lead to a sudden increase in the air pressure difference between the front and rear ends, which will affect the exhaust gas emission and the service life of the components. The large pressure difference brings a series of problems

Images