Engine exhaust particulate trapping and particulate regenerating method

Abstract

The invention discloses an engine exhaust particulate trapping and particulate regenerating method. The engine exhaust particulate trapping and particulate regenerating method adopts a main filter element, an auxiliary filter element, a main microwave generator, an auxiliary microwave generator, a pressure sensor, a temperature sensor, a secondary air supply device and a channel opening and closing valve, and the method is divided into four steps corresponding to three working states: normal working state of a trapping device, synchronous working state of particle regenerating and particle trapping, and regenerating working state of an auxiliary trapping device. According to the engine exhaust particulate trapping and particulate regenerating method, through switching of two sets of filtering systems, design of the channel opening and closing valve, secondary air supply, carrying out control according to a back pressure measurement signal and other methods, the defect that the particulate trapping and regenerating process of an existing engine exhaust particulate trapping device cannot be carried out synchronously is overcome, particulate regenerating can be completed synchronouslywhile particulate trapping is achieved, and the particulate trap is suitable for large-scale popularization and application, the trapping device has the functions of particle trapping, noise elimination and noise reduction, and the method has the advantages that the trapping device is compact in structure, high in trapping efficiency, convenient to operate, safe and effective in process and the like.

Description

technical field [0001] The invention mainly relates to the capture and regeneration of particulates in diesel engine exhaust, and specifically relates to a device that can combine the capture of diesel exhaust particulates with the function of noise reduction and noise reduction, and can realize the synchronous completion of particulates while capturing particulates. The invention discloses a method for implementing a regeneration process, which belongs to the technical field of aftertreatment of diesel engine exhaust. Background technique [0002] Diesel engine particulate emissions seriously pollute the environment and endanger human health, and its purification technology has always been a research hotspot in the field of motor vehicle emission control technology. Particulate filter is currently recognized as the most effective post-treatment technology for diesel particulates. When the exhaust gas flows through the particle filter, the particles are captured by the filt...

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the defect that particle capture and regeneration cannot be carried out synchronously in existing engine exhaust particle traps, and can realize the method of synchronously completing the regeneration process of particles while capturing particles. Effective combination of set and noise canceling noise reduction function

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