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Function tester for DPF/GPF carrier

A technology of DPF and tester, which is applied in the field of vehicle exhaust purification, can solve problems such as complex methods, and achieve the effect of simple equipment

Inactive Publication Date: 2020-07-31
杭州一轩科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent estimates the fault of the DPF mainly through the accumulation amount, which is relatively complicated and prone to large deviations

Method used

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  • Function tester for DPF/GPF carrier
  • Function tester for DPF/GPF carrier
  • Function tester for DPF/GPF carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Example: Measuring the wind speed of a DPF

[0033] 1. Obtain the standard wind speed threshold of an unused DPF

[0034] Take 20 unused recrystallized silicon carbide DPFs manufactured by Guizhou Huangdi Technology Co., Ltd., 10 of which have a diameter of 191mm and the other 10 have a diameter of 286mm. The 20 DPFs are placed on the function tester according to the present invention, and the wind speed is tested for 5 times with a test head with a suitable diameter and a test head with a 1 / 4 fan-shaped section, and the average value obtained for each DPF is used as a standard Threshold, the standard threshold of 191mm is 1.52±0.23m / s, and the standard threshold of 286mm is 1.45±0.15m / s.

[0035] 2. Obtain the real-time wind speed value of the used DPF with blockage

[0036] Take 10 recrystallized silicon carbide DPFs sold by Guizhou Huangdi Technology Co., Ltd. that have passed the test and become clogged after use, of which 5 have a diameter of 191mm and the other ...

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Abstract

The invention discloses a function tester for a DPF / GPF carrier. The function tester is characterized by comprising a cabinet body, an air draft device arranged in the cabinet body and a test arm connected with the cabinet body. The cabinet body comprises a cabinet body I used for placing a DPF / GPF carrier and a cabinet body II provided with a functional panel, the air inlet end of the air draft device is communicated with a test carrier, the air outlet end of the air draft device is communicated with the outside through the side wall of the cabinet body, the test arm is communicated with theoutside through the side wall of the cabinet body, and an anemograph is arranged in the test arm. By utilizing the technical scheme provided by the invention, the wind speed in the DPF / GPF to be measured, especially the wind speed in part of small holes, can be effectively provided in real time, so that the blockage condition of the DPF / GPF can be integrally or locally known based on the wind speed, and a reliable reference standard is provided for maintenance of the DPF / GPF.

Description

technical field [0001] The invention relates to the field of vehicle exhaust gas purification, and more specifically relates to a function tester for DPF / GPF carriers. Background technique [0002] As environmental concerns intensify, regulations on vehicle emissions, especially diesel / gasoline vehicle emissions, are becoming increasingly stringent. However, in the current situation, there are not many ways to reduce the exhaust emissions of diesel / gasoline engine vehicles, which generally include adjusting engine parameters, using better oil products, and installing purification devices on engine exhaust pipes. [0003] However, adjusting engine parameters and improving oil quality can only improve exhaust emissions to a limited extent. The way to really purify the exhaust gas and gradually meet the National VI emission standard is to install a purification device on the engine exhaust pipe, that is, a diesel particle filter (DPF) or a gasoline vehicle particle filter (GPF...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/42G01P5/00
CPCG01D5/42G01P5/00
Inventor 黄黎敏黄利锦毛欣
Owner 杭州一轩科技有限公司
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