Partition type reverse jet regenerative diesel engine exhaust particulate filter device

Abstract

The invention provides a separation-type reverse air injection regenerative diesel engine exhaust particle filter device. The separation-type reverse air injection regenerative diesel engine exhaust particle filter device comprises a main filtering system, a regenerative filtering system, an air injection system and a control system. The main filtering system is composed of two inlet valves, an inlet expansion tube, a main filter body, an outlet shrinkage tube, two air injection solenoid valves, two outlet valves, a partition plate and a main outlet pipe. The regenerative filtering system is located below the main filtering system, and is composed of two regenerative inlet valves, a regenerative inlet pipe, a regenerative filter body, a regenerative outlet pipe and a regenerative outlet valve. The air injection system is composed an air pump and a gas storage tank. The control system is mainly composed of two pressure sensors and a controller. As the filter bodies are separated, the durability of the filter bodies of the diesel engine exhaust particle filter is improved, and emission of the regeneration stage is reduced.

Description

technical field [0001] The invention relates to a diesel engine exhaust particle catcher device, in particular to a separated reverse jet regenerative diesel engine exhaust particle catcher device. Background technique [0002] Inhalable particulate matter is an important component of air pollution. Inhalable particulate matter can be suspended in the atmosphere for a long time, easily deposited in the lungs, and even enter the blood, which is extremely harmful to the human body. According to the survey, 20% of the inhalable particulate matter in the air in Beijing comes from motor vehicle emissions. In fact, compared with gasoline engines, diesel engine particulate (PM) emissions are 30-80 times that of gasoline engines. Therefore, improving diesel engine emissions is an important way to solve the pollution problem of inhalable particulate matter in the air. [0003] In order to meet the increasingly stringent emission regulations, two technical routes are needed to furthe...

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Problems solved by technology

However, there are still problems in the developed reverse jet regeneration system: during the regeneration process of the reverse jet system with a single filter body, the untreated exhaust gas will be directly discharged to the atmosphere, and this process will last for 15-30 minutes, causing pollution; The reverse air injection system of the filter body blows the particles back to the cylinder for combustion, which will deteriorate the environment in the cylinder and have a negative impact on the operation of the diesel engine

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