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Carbon black filtering and electric direct-heating type regeneration device for diesel truck

A technology for regeneration devices and diesel vehicles, which is applied to mufflers, exhaust devices, engine components, etc., can solve problems such as difficulty in promotion and complicated structure of traps, and can increase the filter area, reduce the dead angle of regeneration, and increase the probability of collision. Effect

Inactive Publication Date: 2006-11-22
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current regeneration technology often requires additional auxiliary equipment such as resistance wires, burners, and air injectors, which complicates the structure of the trap and makes it difficult to fully promote

Method used

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  • Carbon black filtering and electric direct-heating type regeneration device for diesel truck
  • Carbon black filtering and electric direct-heating type regeneration device for diesel truck
  • Carbon black filtering and electric direct-heating type regeneration device for diesel truck

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] The preparation process of diesel vehicle soot filter-electric direct heat regeneration device is as follows:

[0043] ① Using conductive silicon carbide foam ceramics made according to "A High-Strength and Dense Foamed Silicon Carbide Ceramic Material and Its Preparation Method" (applied by the Institute of Metal Research, Chinese Academy of Sciences, application number 03134039.3, application date: 030922) as diesel vehicle soot Filtration-filter body (foam ceramic main filter) and heating body (electric direct heating heating element) materials of electric direct heating regeneration device.

[0044] ②Process the ceramic foam material into a wall-flow structure, "king" or "sawtooth" shape as shown in Figure 3a-c, and use it as the main filter of the soot filter-electric direct heating regeneration device for diesel vehicles. The main filter has several meandering airflow passages, the volume of the main filter and the number and width of the passages can be adjusted ...

Embodiment 1

[0066] ① Take conductive silicon carbide foam ceramics 100×40×20mm, soak them in NaOH solution with a concentration of 3M for 8 minutes, remove oil stains and other impurities on the surface, then wash them with water, and then dry them in an air atmosphere at 120°C for 2 hours;

[0067] ②Take two pieces of graphite 10×40×20mm, and braze them to the two ends of the foamed silicon carbide ceramics mentioned in ①, as the base of the metal electrode;

[0068] ③ Brazing two stainless steel columns with a diameter of 6mm on the graphite base as electrodes connected to the wire;

[0069] ④ As shown in Figure 3a, the conductive silicon carbide foam ceramics are assembled into a wall-flow structure main filter with a volume of 2 liters;

[0070] ⑤ Connect the electric heating element and the main filter according to Figure 4a Packaged into a centralized heating diesel vehicle soot filter-electric direct heat regeneration device;

[0071] ⑥ The engine model used in the test is SOFIM...

Embodiment 2

[0073] The difference from Example 1 is:

[0074] Before the test, install the diesel vehicle soot filter-electric direct thermal regeneration device at the designated position of the diesel engine exhaust passage, keep the engine speed at 2160rpm, torque at 188Nm, and power at 42.5kW for 5 hours to filter the diesel vehicle soot -The electric direct heat regeneration device fully accumulates soot, then connects the electric direct heat heating circuit, and uses the on-board 12V battery to supply power for electric direct heat regeneration. After the regeneration, the diesel engine 13 operating condition test with the embodiment 1 was carried out.

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Abstract

The invention relates to a carbon smoke filter - electric heating regenerator of diesel vehicle, which comprises an electric controller, an electric heater, and a foam ceramic main filter. Wherein, the electric heater and the foam ceramic main filter are mounted inside the sealing frame of purifier connected with the ventilate tube; the electric heater is formed by one or several foam ceramic electric heating units, that uses integrated heating or dispersed heating method; the foam ceramic main filter is made from silicon carbide foam ceramic, with wall-flow or meshed tooth shape. The invention has controllable conductive property, which can effectively filter the carbon smoke; and it is powered by carrier power source. In addition, it ahs lower cost, on-site regeneration and long service life.

Description

technical field [0001] The invention relates to an electric direct heating diesel vehicle soot filter system, specifically a foamed silicon carbide ceramic as the carrier of the filter device and an electric heating body, which can effectively reduce the emission of diesel vehicle particles, and can quickly regenerate in situ, Recycled diesel vehicle filter purification device. Background technique [0002] The main objects of diesel vehicle emission control are HC, CO, NOx and particulate matter. Among them, the emissions of HC, CO, and NOx are much less than those of gasoline engines, while the emission of particulate matter is dozens of times or even more than that of gasoline engines. Difficulties in governance. [0003] Improving combustion chamber design and other in-engine purification technologies can greatly reduce the emission of particulate matter from diesel vehicles. However, as emission purification regulations become more stringent, it is difficult to meet t...

Claims

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Application Information

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IPC IPC(8): F01N3/027
Inventor 张劲松曹小明田冲刘强杨振明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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