Doppler Global Velocimetry Measurement of Charge Motion Inside Piston Bowl of a Motored Diesel Engine and Correlation to CFD Results

Deepe, Roland; Tschiggfrei, Wolfgang; Seidel, Thomas; Gruenig, C.; Schramm, Christian

doi:10.4271/2012-01-1234

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2013

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“…Usually, such a device provides illumination or observation. Such systems have been developed in the context of laser diagnostics in internal combustion engines for the application of particle image velocimetry, planar laser-induced fluorescence and Doppler global velocimetry [17][18][19]. A common characteristic of these techniques is the perpendicular arrangement of excitation and emission.…”

Section: Optical Systemmentioning

confidence: 99%

Two-dimensional surface temperature diagnostics in a full-metal engine using thermographic phosphors

Fuhrmann¹,

Schneider²,

Ding³

et al. 2013

Meas. Sci. Technol.

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An optical system consisting of a rigid borescope was developed to measure surface temperatures inside full-metal internal combustion engines. The measurement principle is predicated on lifetime-based phosphor thermometry of the material Gd3Ga5O12: Cr. The system is designed to resolve the luminescence decay of thermographic phosphors temporally and two-dimensionally by the use of a CMOS high-speed camera. The device allows the visualization of the temperature distribution in an area of 9 mm in diameter. An application of this optical system inside an internal combustion engine is demonstrated, yielding temperature maps under fired and motored conditions in a full-metal engine for the first time.

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Section: Optical Systemmentioning

confidence: 99%