Piston temperature measurement by use of thermographic phosphors and thermocouples in a heavy-duty diesel engine run under partly premixed conditions
Journal article, 2005

Piston temperature experiments were conducted in a single-cylinder heavy-duty Diesel research engine, based on the Volvo Powertrain D12C engine both by use of optical temperature sensitive phosphor and of thermocouples mounted on the piston surface. In the former case, a thin coating of a suitable thermographic phosphor was applied to the areas on the piston surface to be investigated. The optical measurements of piston temperatures made involved use of an optical window and of an endoscope. The possibility of using optical fibres into guide light in and out of the engine was also investigated. Results of the optical and of the thermocouple measurements were compared and were also related to more global data with the aim of exploring the use of thermographic phosphors for piston- temperature measurements in Diesel engines. Thermographic phosphors thermometry was found to represent an alternative to the thermocouple method since it easily can be applied to various piston geometries. The method was seen to have a clear potential for production-type engine applications, particularly with use of fibre optics. Copyright © 2005 SAE International.


Tobias Husberg

Chalmers, Applied Mechanics, Combustion and Multiphase Flow

Savo Gjirja

Chalmers, Applied Mechanics, Combustion and Propulsion Systems

Ingemar Denbratt

Chalmers, Applied Mechanics, Combustion and Propulsion Systems

Alaa Omrane

Lunds tekniska högskola

M. Alden

Lunds tekniska högskola

Johan A Skifs Engström

Volvo Group

SAE Technical Papers

01487191 (ISSN) 26883627 (eISSN)


Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Other Materials Engineering



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