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Onboard device and method for analyzing fluids in a heat engine

A technology to be analyzed and set point, applied in the direction of analyzing materials, material analysis by optical means, instruments, etc., can solve problems such as the influence of beam spectral characteristics

Active Publication Date: 2017-08-08
SP3H
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, it can be seen that the measured spectrum, which is characteristic of the quality and / or composition of the product to be analyzed, is influenced by external factors such as temperature, and by the spectral properties of the light beam interacting with the product to be analyzed. influences

Method used

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  • Onboard device and method for analyzing fluids in a heat engine
  • Onboard device and method for analyzing fluids in a heat engine
  • Onboard device and method for analyzing fluids in a heat engine

Examples

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Embodiment Construction

[0033] figure 1 A spectrometer specifically designed to meet the specific requirements of a sensor installed on a vehicle or in a heat engine is shown. The spectrometer includes:

[0034] - a light source LS emitting a light beam LB,

[0035] - a lens-based optical element CLS for shaping the light beam LB generated by the light source LS,

[0036] - the measuring cell FLC in which the product to be analyzed interacts with the light beam LB,

[0037] - a wavelength filter WFL which enables spatially spreading the light beams LB of different wavelengths at the output of the unit FLC, and

[0038] - A sensor OPS providing measurements enabling the composition of the light spectrum at the output of the filter WFL.

[0039] The light source LS covers at least one so-called "analysis" wavelength band in which spectral measurements must be performed. The optical element CLS converts the geometry of the light beam LB and introduces it into the measurement cell FLC. The optical ...

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Abstract

A method for controlling a spectrometer for analyzing a product includes steps of: acquiring a measurement representative of the operation of a light source, determining, depending on the measurement, a value of supply current of the light source, and / or a value of integration time of light-sensitive cells of a sensor, disposed on a route of a light beam emitted by the light source and having interacted with a product to be analyzed, and if the integration time and / or supply current value is between threshold values, supplying the light source with a supply current corresponding to the determined supply current value, adjusting the integration time of a light-sensitive cell to the determined integration time value, and acquiring light intensity measurements supplied by the sensor, enabling a spectrum to be formed.

Description

technical field [0001] The present invention relates to the analysis of fluids by spectrometry. The invention is particularly, but not only, applicable to the analysis of fluids in heat engines, and especially to the analysis of hydrocarbons used as fuel in such engines. This analysis concerns all heat engines, whether used for land, sea or air transport, whether military or stationary. Background technique [0002] Increasingly stringent environmental standards require various heat engine manufacturers and users to seek ways to save fuel consumption and reduce engine emission pollution. However, certain properties of the fuel, such as its composition, have been shown to have a direct impact on the performance and proper operation of the heat engine. It further shows that some of these properties are especially variable for hydrocarbon-based fuels, depending on the source of the fuel. In fact, it has been estimated that some properties, such as hydrocarbon-based fuel comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3577G01N21/27
CPCG01N21/3577G01N21/274G01N21/3504G01N2021/3181G01N2201/062G01N2201/0624G01N2201/121G01N2201/1211G01N2201/124G01N2201/1242G01N2201/1247G01N2201/127G01N2201/12723
Inventor S·欧博尔蒂J·富尔内尔
Owner SP3H
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