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説明:

We have developed a time-resolved Compton-scattering imaging technique for visualizing gas behaviours in operating internal combustion engines. This technique employs a digital processing system to record both the pulse height and the timing of detected X-rays, enabling the derivation of Compton-scattered X-ray spectra for each crank angle, which corresponds to the piston position. The observed crank-angle dependency of Compton-scattered X-ray intensity allowed us to successfully capture the density changes of the gas in the combustion chamber associated with piston motion and combustion. In addition, the capability of temperature estimation is discussed with a combination of X-ray Compton-scattering experiments and pressure measurements. This study demonstrates that time-resolved Compton-scattering imaging is a powerful and unique technique for characterizing gas behaviours in an operating internal
combustion engine.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: x-ray Compton scattering, combustion, time-resolved technique, reciprocating engine

刊行年月日: 2026-05-01

出版者: International Union of Crystallography (IUCr)

掲載誌:

• Journal of Synchrotron Radiation (ISSN: 16005775) vol. 33 issue. 3 S1600577526002031

研究助成金:

• Acquisition, Technology & Logistics Agency JPJ004596

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1107/s1600577526002031

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更新時刻: 2026-09-11 10:28:23 +0900

MDRでの公開時刻: 2026-09-11 14:26:04 +0900