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A dpf regeneration system and control method for optimizing thermal management

A regeneration system, DPF technology, applied in the direction of electronic control of exhaust treatment device, diagnosis device of exhaust treatment device, exhaust gas treatment, etc., can solve problems such as low regeneration efficiency, eliminate energy loss, increase residence time, The effect of prolonging the service life

Active Publication Date: 2021-05-25
JIANGSU UNIV
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  • Application Information

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Problems solved by technology

However, the exhaust temperature of a diesel engine is usually higher than 300°C. In this high temperature environment, the main active substance O in NTP is 3 Will decompose in large quantities, resulting in low regeneration efficiency

Method used

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  • A dpf regeneration system and control method for optimizing thermal management
  • A dpf regeneration system and control method for optimizing thermal management
  • A dpf regeneration system and control method for optimizing thermal management

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Embodiment Construction

[0033]The present invention is made in conjunction with the accompanying drawings and specific examples, but the scope of the invention is not limited thereto.

[0034]Joinfigure 1 As shown, the optimized thermal management of the present invention includes a DPF system, an NTP system, a temperature control system, and a control system. The low-temperature plasma system 200 is mounted upstream of the DPF system 100, and provides an active gas for the DPF system 100; the temperature control system 400 provides a target operating temperature of the particulate matter.

[0035]Joinfigure 2 As shown, the DPF system includes a main exhaust pipe 101, a DPF 102, and a pressure valve 103. The temperature control system includes an incubator 301, a heat sink 302, a water pump 303, a water tank 304, and a thermostat valve 305. The control system includes a first valve 401, an NTP valve 402, a control module 403, a differential pressure sensor 404, and a temperature sensor 405. The exhaust gas in th...

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Abstract

The invention discloses a DPF regeneration system and a control method for optimizing thermal management, and relates to the technical field of post-treatment of diesel engine exhaust. Adjust the working state of the diesel engine; open the NTP valve when the diesel engine is stopped, inject NTP into the DPF, and the active material oxidizes the PM in the DPF to achieve the purpose of regenerating the DPF; during the operation of the diesel engine, the temperature control system is controlled by the control system. The DPF system is cooled, and the temperature of the DPF is appropriately reduced; when the DPF is shut down to regenerate, the heat medium is used as a heat source, so that the regeneration process proceeds smoothly. By using the temperature control system, the temperature of the DPF can be maintained in an appropriate temperature range during the regeneration process of the diesel engine, so as to achieve the purpose of regenerating the DPF smoothly and efficiently; The high-temperature impact of the exhaust gas temperature on the DPF prolongs the service life of the DPF.

Description

Technical field[0001]The present invention relates to the field of diesel exhaust gas treatment techniques, and in particular, to an optimized thermal management DPF regeneration system and a control method.Background technique[0002]Particular Matter, PM produced by diesel engines will have great harm to the atmospheric environment and human health. Diesel Particular Filter, DPF is one of the most effective means to reduce PM emissions, becoming an important part of the rear treatment system after the diesel engine. The overall trapping efficiency of the DPF is about 90%, but as the diesel operating time increases, the PM captured in the DPF has gradually increased, and the exhaust back pressure is increased. It affects the performance of the diesel engine during severe, so it takes timely oxidation. Remove the DPF in the DPF, the DPF is regenerated.[0003]Non-thermal plasma, NTP) technology is an emerging technique applied to a diesel exhaust aftertreatment system. The gas source is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N9/00F01N3/023F01N11/00
CPCF01N3/0238F01N9/002F01N11/002F01N2260/022F01N2260/024Y02T10/40
Inventor 蔡忆昔赵楠施蕴曦崔应欣陈祎季亮
Owner JIANGSU UNIV
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