Piston Temperature Measurement by Use of Thermographic Phosphors and Thermocouples in a Heavy-Duty Diesel Engine Run Under Partly Premixed Conditions 2005-01-1646
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.
Citation: Husberg, T., Gjirja, S., Denbratt, I., Omrane, A. et al., "Piston Temperature Measurement by Use of Thermographic Phosphors and Thermocouples in a Heavy-Duty Diesel Engine Run Under Partly Premixed Conditions," SAE Technical Paper 2005-01-1646, 2005, https://doi.org/10.4271/2005-01-1646. Download Citation
Tobias Husberg, Savo Gjirja, Ingemar Denbratt, Alaa Omrane, Marcus Aldén, Johan Engström
Chalmers University of Technology, Lund Institute of Technology, Volvo Technology Corporation
SAE 2005 World Congress & Exhibition
CI and SI Power Cylinder Systems and Power Boost Technology-SP-1964