Optimization of internal combustion processes using an on-board fuel micro analyzer

Fournel, Johan; Lunati, Alain; Dementhon, J. B.

doi:10.4271/2007-01-1830

Cited by 6 publications

(2 citation statements)

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“…However, in the in-line environment, sensitive Fourier spectrometers are difficult and expensive to utilize [10]. Dispersive NIR spectrometers also have high requirements for component alignment [11], cooling, and the wide spectral range and high resolution cannot be obtained at the same time without increasing the size of the instrument. In the paper we examine the multichannel configuration of the spectrophotometer [12]- [14].…”

Section: Instrument Compositionmentioning

confidence: 99%

“…Described instrument allows analyzing the flow in the wide spectral range on the wavelengths that carry important information about the components in the flow channel or the state of the monitored process. When working with highly absorbing materials, such as oil, whose optical density reaches 𝑂𝑂𝑂𝑂 = 4.0 [11]- [13], it is necessary to ensure the possibility of rapid flow analysis (minimum signal integration time) and a wide dynamic range of the spectrophotometer system. The dynamic range is limited on one side by the noise of the radiation detector and on the other by the saturation of the detector.…”

Section: Instrument Compositionmentioning

confidence: 99%

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Design of multichannel NIR spectrophotometers for in-line process analysis of oil products

Bobe,

Voznesenskaya,

Polyakov

2023

Optical Design and Testing XIII

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The study of an in-line NIR multichannel spectrophotometer system is performed in terms of energy efficiency and uniformity of dynamic range in the fiber-optic bundle. Recommendations for choosing an optical design between the afocal and focal probing systems are formulated based on comparison of reflection and transmission operation principles as well as determination of working wavelength ranges and analysis of spectral characteristics of the entire system, from source to receiver. In result, for the afocal system, uniformity of 0.09 was achieved with an energy efficiency of 30.4 percent. A spectrophotometer with a combination of the focal forming system and sapphire windows in a flow cell can achieve a power variation coefficient of 0.165 with a power efficiency of 15.3%.

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Section: Instrument Compositionmentioning

confidence: 99%

Section: Instrument Compositionmentioning

confidence: 99%