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Device for measuring the pressure of gas in pollution control or energy storage system

An energy storage system and purification system technology, applied in the field of equipment for measuring gas pressure, can solve the problems of bulkiness, expensive pressure sensors and regulators, etc., and achieve the effect of accurate temperature measurement

Inactive Publication Date: 2015-07-01
INERGY AUTOMOTIVE SYST RES (SA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these pressure sensors and regulators are expensive and bulky

Method used

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  • Device for measuring the pressure of gas in pollution control or energy storage system
  • Device for measuring the pressure of gas in pollution control or energy storage system

Examples

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Embodiment Construction

[0038] In the following description, exemplarily, the gas whose pressure is desired to be measured is a gas for being injected into an exhaust line of a vehicle to reduce the amount of nitrogen oxides (NOx) in the exhaust gas. Exemplarily, consider the gas to be ammonia. Of course, in an embodiment variant, the gas can be of any other type, especially hydrogen.

[0039] As shown in the example of FIG. 1 , an engine 1 of a vehicle is controlled by an electronic computer 2 (sometimes referred to as an ECU, which is an abbreviation of "Engine Control Unit" in English, ie, an engine control unit). The engine 1 cooperates with the SCR purification system 3 . Exhaust gas 11 from the engine is directed to ammonia gas injection module 31 where ammonia gas 12 is mixed with exhaust gas 11 . The ammonia / exhaust gas mixture 13 then passes through an SCR catalyst 32 that enables the ammonia to reduce nitrogen oxides (NOx). The cleaned exhaust gas 14 is then directed towards the exhaust ...

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Abstract

A device for measuring a pressure of a gas in a pollution control or energy storage system, including: a housing including an inlet and an outlet; a compound disposed inside the housing and configured to absorb at least one portion of gas entering the housing through the inlet, the non-absorbed portion of gas exiting the housing via the outlet; at least one sensor configured to measure a temperature of the compound; a processing unit configured to determine the pressure of the gas by using the temperature measurement from the sensor and a predefined pressure / temperature ratio.

Description

technical field [0001] The invention relates to devices for measuring the pressure of gases. [0002] Non-exclusively, the invention is particularly applicable to measuring the pressure inside an energy storage system, such as a hydrogen storage vessel mounted on a motor vehicle. [0003] Non-exclusively, the invention is also applicable to measuring the pressure of a gas circulating in a purification system for reducing the amount of nitrogen oxides (NOx) in exhaust gases from motor vehicles. In the following part of the description, it is devoted to exemplarily describing this specific application case. [0004] Of course, the invention is applicable to measuring the pressure of any type of gas that may be present in a purification system or energy storage system. Background technique [0005] Nitrogen oxides present in the exhaust gases of vehicles, especially diesel vehicles, can be removed by purification systems using selective catalytic reduction (commonly known as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L11/00G01N33/00
CPCG01L23/24G01L11/002G01N33/0036G01N33/0054Y02A50/20
Inventor J-J·范夏夫汀根弗朗索瓦·道尼尔多米尼克·马杜让-克罗德·阿布姆汉伊
Owner INERGY AUTOMOTIVE SYST RES (SA)
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