Piston's thermal fatigue testing device for thermal engine in motor vehicle, has optical pyrometer that measures maximum temperature in part of piston, and optical measurement unit that indicates structural damage of piston

Dispositif de test de fatigue thermique pour piston de moteur thermique et procédé de test associé

Fabien Szmytka (1) , Alexis Oudin (2) , Farhad Rezai-Aria (3) , Mehdi Salem (3)

1 PSA Peugeot-Citroen
2 PSA - PSA Peugeot - Citroën
3 ICA - Institut Clément Ader

The device has an electromagnetic induction based heating unit i.e. solenoid coil (12), arranged in a cup (21) of a piston, and adapted to realize heating cycles. A channel (13) of a cooling circuit is permanently supplied with a fluid at temperature lower than maximum temperature reached at the time of the heating cycles. The cooling circuit is placed at the level of a skirt (22) of the piston. An optical pyrometer (17) measures the maximum temperature in a part of the piston. An optical measurement unit indicates structural damage of the piston. An independent claim is also included for a method for testing thermal fatigue of a piston of a thermal engine.

Demandeurs : PEUGEOT CITROEN AUTOMOBILES SA Société anonyme - FR Titulaires : PEUGEOT CITROEN AUTOMOBILES SA Société anonyme Mandataires : PEUGEOT CITROEN AUTOMOBILES SA Date de dépôt : 25.02.2011 Date de mise à la disposition du public de la demande : 31.08.2012

Domaines: Sciences de l'ingénieur [physics]

Fabien Szmytka, Alexis Oudin, Farhad Rezai-Aria, Mehdi Salem. Piston's thermal fatigue testing device for thermal engine in motor vehicle, has optical pyrometer that measures maximum temperature in part of piston, and optical measurement unit that indicates structural damage of piston. France, Patent n° : FR2972052-A1. DOCA-NS; SUMO. 2011, pp.1-22. ⟨hal-02884829⟩