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Measuring device for analyzing exhaust gases of a combustion engine

A technology for measuring devices and internal combustion engines, which is applied in the direction of measuring devices, internal combustion engine testing, engine testing, etc., and can solve problems such as pollution and influence of exhaust gas measuring devices and analysis units

Inactive Publication Date: 2010-06-23
AVL LIST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The biggest problem here is the contamination of the exhaust gas measuring device and the analysis unit by deposits of the exhaust gas, mainly caused by hydrocarbons and their decay products (Folgeprodukte)
Another concern is the effect of the exhaust gases flowing through these engine and vehicle test rigs on the operators and the operating environment

Method used

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  • Measuring device for analyzing exhaust gases of a combustion engine
  • Measuring device for analyzing exhaust gases of a combustion engine
  • Measuring device for analyzing exhaust gases of a combustion engine

Examples

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Embodiment Construction

[0045] Such as figure 1 As shown, a measuring device 1 is used to analyze exhaust gases from an internal combustion engine 2 (not described further here) which is arranged on an engine test stand. The measuring device 1 comprises two exhaust gas supply lines 4 and 4', which can be connected to different measuring points on the exhaust system 3 of the internal combustion engine 2 and can be switched via valves 5 and 5' to mutually parallel measuring branches 7, 8 and 9 . At the inlet ends of the valves 5 and 5' on each exhaust gas delivery line 4 and 4' is provided a conventional particle filter 10 and 10' respectively. In the schematically highlighted unit 6, the measuring branches 7 and 8 are in a constant temperature state of 191 ° C. The measuring branch 7 is provided with an analysis unit 12 for the determination of NO and NO X Similarly, the measurement branch line 8 is provided with an analysis unit 13 for determining the content of hydrocarbons.

[0046] The measurin...

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Abstract

The invention relates to a measuring device (1), preferably a test stand for engines and vehicles for analyzing exhaust gases of a combustion engine (2), comprising at least one exhaust gas supply line (3, 4), which can be connected to the exhaust system of the combustion engine (2) and which supplies at least one measuring branch (7, 8, 9) each provided with a respective analysis unit (12, 13, 14) for determining exhaust gas constituents. According to the invention, a filter device (16a to 16f) is provided in at least one cool measuring branch (9) upstream from the analysis unit (14) and / or between different components (14a, 14b) of the analysis unit (14) and / or on the output side of at least one analysis unit (12, 13, 14) of one of the measuring branches (7, 8, 9). This filter unit contains a filter material that is selective with regard to gaseous hydrocarbons, preferably a filter material selected from the group consisting of zeolites and / or silicates.

Description

technical field [0001] The present invention relates to a measuring device for analyzing the exhaust gas of an internal combustion engine, in particular to an engine and vehicle test bench, comprising at least one exhaust gas transmission line which can be connected to the exhaust system of an internal combustion engine, and on said at least one measuring branch line, each Each strip is provided with at least one analysis unit for determining the composition of the distributed exhaust gas. Background technique [0002] Hydrocarbons (combustible substances) are combusted together with air components in internal combustion engines, react with them, and on the one hand generate combustion products of the engine and vehicles that are restricted according to current regulations, such as CO, H X C Y , NO X and soot, etc. On the other hand, some unrestricted combustion products such as N 2 、H 2 O.CO 2 , O 2 Wait. At the same time, the combustion of fuel will also generate so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/10G01M15/00G01N21/15G01N21/35G01N21/84G01N21/85G01N33/00
CPCG01N33/004G01N21/3504G01N2021/8557G01N21/15G01N33/0004G01N2021/8411
Inventor A·霍兹科S·克斯鲍曼U·格斯巴斯E·斯尼佛
Owner AVL LIST GMBH
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