Ammonia mixing test device for automobile exhaust system

A technology of automobile exhaust system and test device, which is applied in the direction of measuring device, vehicle test, machine/structural component test, etc. It can solve the problems of destroying internal flow field, destroying product structure, low efficiency, etc., and achieves good measurement effect , Improve measurement efficiency and high measurement accuracy

Pending Publication Date: 2022-03-25
保定市屹马汽车配件制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First, part of the product structure behind the catalytic converter is removed, and then a mechanical arm is used to control the measuring head to perform point-by-point measurement on the end face of the catalytic converter. This method seriously damages the product structure, resulting in relatively large deviations in measurement results
[0005] Second, a probe is arranged at each measuring point inside the catalytic converter, and then recorded. This scheme seriously

Method used

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  • Ammonia mixing test device for automobile exhaust system
  • Ammonia mixing test device for automobile exhaust system
  • Ammonia mixing test device for automobile exhaust system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0044] Example 1

[0045] like Figure 1-3 As shown, this embodiment discloses an ammonia mixture test device for an automobile exhaust system. The component to be tested is a catalyst 1. The catalyst 1 has an air inlet and an exhaust port, including: a flexible base 2, an outer surface of the catalyst 1 The surface is provided with a group of air intake parts 3, and there are two air intake parts 3, which are respectively set close to the air inlet and the exhaust port of the catalyst 1; Until it is communicated with the inner cavity of the catalyst 1; the two ends of the flexible base 2 are respectively fixed and detachable with the two gas taking parts 3; The channels correspond one by one; the synchronizing rod 5 is located above the flexible base 2, and its two ends are respectively connected to the two air intake pipes 4 fixedly or detachably; the motor base 6, the motor base 6 is located in the synchronizing rod 5 Above, the two ends of the motor base 6 are provided w...

Example Embodiment

[0053] Example 2

[0054] like Figure 4 As shown, the present embodiment adopts two sets of air intake equipment. Compared with Embodiment 1, the air inlet and the air outlet can be simultaneously taken in two positions at the same time. While improving the efficiency, it also realizes a single exhaust operation and different points. At the same time, take the air from the air inlet and outlet below the position.

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PUM

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Abstract

The invention discloses an ammonia mixing test device for an automobile exhaust system. The ammonia mixing test device comprises a flexible base, a gas taking pipe, a synchronous connecting rod, a motor base, a servo motor, a guide optical axis and a gas detection mechanism. The air taking pipe is driven to move along the air taking channel in a servo motor and lead screw transmission mode, so that the air taking pipe moves to a preset air taking point to achieve the purpose of air taking detection; each group of gas taking pipes are simultaneously driven by the synchronous connecting rod, the same group of gas taking pipes at the gas inlet and the gas outlet of the to-be-measured catalyst can realize simultaneous gas taking under one-time exhaust operation, the to-be-measured catalyst has no structural damage except the additional gas taking piece, the measurement effect is good, the measurement precision is high, and the measurement efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of automobile testing equipment, in particular to an ammonia mixing testing device for an automobile exhaust system. Background technique [0002] In my country, due to the high sulfur content of diesel oil, SCR technology is considered to be the most feasible post-treatment technology for NOx emission control of heavy-duty diesel engines because of its good sulfur resistance. As large cities take the lead in implementing the National IV emission regulations, more and more passenger cars equipped with SCR after-treatment systems have appeared in China. There is an important evaluation parameter in the SCR structure--ammonia distribution (ammonia mixing), ammonia Uneven mixing will seriously affect the performance of the product, which will lead to unqualified discharge and the failure of product calibration. [0003] During the research process, it was found that the results of ammonia mixing at this stage ...

Claims

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Application Information

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IPC IPC(8): G01M17/007G01N33/00
CPCG01M17/007G01N33/0054
Inventor 史涛李帅李立彦董占勇刘少卿
Owner 保定市屹马汽车配件制造有限公司
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