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A system and control method for alternately regenerating dpf using engine exhaust

A DPF and engine technology, which is applied to the electronic control of exhaust gas treatment devices, engine components, combustion engines, etc., can solve the problems of complex system structure and the need to improve reliability.

Inactive Publication Date: 2020-02-21
JIANGSU UNIV
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Problems solved by technology

However, this method uses a thermoelectric conversion device to provide heat energy for DPF regeneration to maintain a suitable regeneration temperature for the DPF. The entire system structure is relatively complicated, and the reliability needs to be improved.

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  • A system and control method for alternately regenerating dpf using engine exhaust
  • A system and control method for alternately regenerating dpf using engine exhaust
  • A system and control method for alternately regenerating dpf using engine exhaust

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0027] Such as figure 1 As shown, it is an overall schematic diagram of the system of the present invention, including diesel engine 100, NTP injection system 200, DPF parallel system 300, power supply device 400, temperature control system 500 and control module 600; said NTP injection system 200, power supply device 400 , the temperature control system 500 are all connected to the control module 600; the NTP injection system 200 includes an air pump 201, a mass flow controller 202, an NTP generator 203, an injection pipeline 204, a first nozzle 205, and a second nozzle 206 , cooling water tank 207; the DPF parallel system 300 includes a first DPF301 and a second DPF302; the power supply device 400 includes a vehicle power supply 401 and an inverter booster 402; the temp...

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Abstract

The invention relates to a system for alternatively regenerating DPF via engine exhaust and a control method for the same. The system mainly comprises a diesel engine, an NTP injection system, a DPF parallel system, a power supply feeding device, a temperature-control system and a control module, wherein the DPF parallel system has two DPFs mounted in a parallel way, so the engine can normally work upon alternative regeneration DPF; exhaust is introduced to the front end of the regenerated DPF via a bidirectional air pump; gas components of the exhaust cooperate with active substance producedby the NTP injection system to produce regenerated DPD; the DPFs are connected in a parallel way via the temperature control system; and the DPFs can be remained at an optimal regeneration temperaturerange during the regeneration process due to heat radiation bend pipes and fans of the temperature control system. Problems of low NTP utilization rate due to excessive exhaust and poor regenerationefficiency can be solved for online DPF regeneration; and the exhaust works as a part of reaction gas in the DPF parallel system, and DPF regeneration reaction features can be explored with cooperation between the engine exhaust and the NTP.

Description

technical field [0001] The invention belongs to the technical field of post-treatment of diesel engine exhaust, and in particular relates to a system and a control method for alternately regenerating a DPF by using engine exhaust. Background technique [0002] Due to its high fuel economy and power, diesel engines are widely used in transportation and industrial and agricultural production fields. In recent years, diesel engines have also become more and more popular in the field of light vehicles. Compared with gasoline engines, diesel engines have lower emissions of carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NO X ) emissions are comparable, while particulate matter (particulate matter, PM) emissions are very large. Particles will penetrate deep into the lungs of the human body, causing mechanical loads and damaging the self-purification mechanism of the lungs. In addition, PM2.5 (particulate matter with a diameter of ≤2.5um) is one of the main causes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/023F01N9/00F01N11/00
CPCF01N3/023F01N9/002F01N11/002Y02T10/40
Inventor 蔡忆昔崔应欣施蕴曦王静樊润林濮晓宇顾林波季亮
Owner JIANGSU UNIV
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