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Exhaust gas dilution device and exhaust gas measuring system using the same

A technology of dilution device and measurement system, which is applied in the direction of exhaust device, diagnostic device of exhaust treatment device, sampling device, etc., and can solve the problem that the flow range is difficult to expand

Inactive Publication Date: 2017-08-11
HORIBA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Therefore, as described above, it is difficult to expand the dilutable flow rate range of the conventional exhaust gas dilution device beyond a certain range.

Method used

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  • Exhaust gas dilution device and exhaust gas measuring system using the same
  • Exhaust gas dilution device and exhaust gas measuring system using the same
  • Exhaust gas dilution device and exhaust gas measuring system using the same

Examples

Experimental program
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Embodiment Construction

[0039] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

[0040] Such as figure 1 As shown, the exhaust dilution device 100 of this embodiment is a full-flow dilution system, and is used as a part of the exhaust gas measurement system X. As shown in FIG.

[0041] Specifically, the exhaust gas dilution device 100 includes: an exhaust gas sampling pipe 1, which is connected to an exhaust pipe (not shown) of an internal combustion engine, and introduces a full amount of exhaust gas; a circular tubular dilution channel 2 (hereinafter, Also referred to simply as channel 2), it is a dilution pipe, which introduces the exhaust gas through the exhaust gas sampling pipe 1, and introduces air as a dilution gas, and mixes the exhaust gas with the air to dilute the exhaust gas. and a flow control device (CVS) 9 to make the flow of the mixed gas flowing through the channel 2 constant.

[0042] Additionally, in the figure 1 In , ref...

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PUM

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Abstract

In order to provide an exhaust gas dilution device (100) capable of making a flow rate range wider than before, the exhaust gas dilution device (100) is adapted to include: a dilution tunnel (2) through which diluent gas such as air flows; an orifice member (51) adapted to block the dilution tunnel (2) except for an orifice hole (5a) provided in a central part; and an exhaust gas introduction pipe 1 of which a discharge port 1a is disposed so as to face to the orifice hole (5a) and face to a downstream side and through which exhaust gas is discharged from the discharge port (1a into the dilution tunnel (2). In addition, in the exhaust gas dilution device (100), the orifice member (51) is formed with a concave part (S) that is gradually concaved from an outer circumferential edge part toward the orifice hole (5a) as viewed from an upstream side.

Description

technical field [0001] The present invention relates to an exhaust dilution device for diluting exhaust gas discharged from an internal combustion engine or the like for the purpose of analyzing the composition of the exhaust gas, and an exhaust gas measurement system using the exhaust gas dilution device. Background technique [0002] In the case of analyzing the components of the exhaust gas of an internal combustion engine, the analysis will be hindered by agglomeration and the like in the original state of the exhaust gas. Therefore, the exhaust gas is diluted with a diluent gas such as air and then introduced into the analysis equipment. The device used for said dilution is a full-flow dilution device using a full-flow channel or a partial dilution device using a micro-channel. [0003] For example, taking a full-flow dilution device as an example, the entire amount of exhaust gas discharged from an internal combustion engine is introduced into the passage, and a flow-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
CPCG01N1/2252G01N2001/2255F01N11/007F01N13/008F01N13/082F01N2550/14G01M15/102
Inventor 熊谷树
Owner HORIBA LTD