TDLAS (Tunable Diode Laser Absorption Spectroscopy) measuring air chamber device simulating operating conditions of internal combustion engine

A technology for working conditions and internal combustion engines, which is applied in the field of measuring gas chamber devices and TDLAS measuring gas chamber devices simulating the working conditions of internal combustion engines, can solve the problems of inability to realize on-line measurement and poor test accuracy of TDLAS testing technology, and achieves compact and high-quality design. The effect of similarity

Inactive Publication Date: 2018-11-20
HARBIN ENG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

Suitable for complex pollutant emission characteristics of marine diesel engines, it can realize high-precision online measurement of pollutant emission concentration, and can effectively solve the problem that existing test methods and instruments canno

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  • TDLAS (Tunable Diode Laser Absorption Spectroscopy) measuring air chamber device simulating operating conditions of internal combustion engine
  • TDLAS (Tunable Diode Laser Absorption Spectroscopy) measuring air chamber device simulating operating conditions of internal combustion engine
  • TDLAS (Tunable Diode Laser Absorption Spectroscopy) measuring air chamber device simulating operating conditions of internal combustion engine

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] In the figure: 1 is the absorption air chamber, 2 is the mirror cavity, 3 is carbon nano-particles, 4 is the guide rail, 5 is the base, 6 is the air inlet hole, 7 is the air outlet hole, 8 is the sensitive probe of the TEC temperature controller, and 9 is the Circulation pipe, 10 is air pump, 11 is air valve, 1 is 2 agitator, 13 is pressure gauge, 14 is heating wire, 15 is power supply, 16 is visualization window, 17 is He:Ne laser collimator, 18 is can Tuned diode laser, 19 is a detector, 20 is a heat shield, 21 is a bracket, 22 is a knob, 23 is a nut, 24 is a medium optical path output port, and 25 is a long optical path output port.

[0024] Inside the gas chamber device is an absorption gas chamber, which is used to store target gases and particles, and an adjustable high-reflection optical cavity is placed inside to increa...

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Abstract

The invention provides a TDLAS (Tunable Diode Laser Absorption Spectroscopy) measuring air chamber device simulating operating conditions of an internal combustion engine. The device comprises an absorption air chamber, carbon nanoparticles, a variable optical path system, a circulating system and a temperature control system, wherein the carbon nanoparticles are arranged in the absorption air chamber; the variable optical path system comprises guide rails, a rotary base, rotary knobs, nuts and a mirror cavity; the guide rails are arranged in the absorption air chamber face to face; the rotarybase is connected with the guide rails; the rotary knobs and the nuts are arranged on the base; the mirror cavity is formed in the nuts; visual windows are formed in two sides of the absorption air chamber; a tunable diode laser and a detector are respectively arranged in the visual windows; a He: Ne laser collimator and a power supply are arranged on one side of the detector. According to the device disclosed by the invention, temperature and pressure control is realized in the limited space, the particles are purged by utilizing the circulation device, the combustion conditions of the internal combustion engine are simulated, and the device is compact in whole design structure, reasonable and high-efficiency, and has extremely high similarity for simulating emission of the internal combustion engine.

Description

technical field [0001] The invention relates to a measuring gas chamber device, in particular to a TDLAS measuring gas chamber device for simulating the working condition of an internal combustion engine, and belongs to the field of diesel engines. Background technique [0002] In recent years, environmental issues have become the focus of people's increasing attention, especially with the introduction of green, energy-saving, low-carbon and other concepts, environmental awareness has become more and more popular, and we feel more and more that environmental issues are closely related to our daily life. Air pollution is particularly prominent in environmental issues, such as the growing greenhouse effect, global warming, melting glaciers, and rising sea levels. The shipbuilding industry developed rapidly at the end of the last century and the beginning of this century, and the discharge of pollutants from ships has become one of the focal issues of air pollution. In the fut...

Claims

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Application Information

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IPC IPC(8): G01N21/39G01N21/01
CPCG01N21/01G01N21/39G01N2021/399
Inventor 李立杨乐乐杨晓涛穆彦龙姜子印
Owner HARBIN ENG UNIV
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