Test state for the investigation of the thermal fatigue of cylinder heads of internal combustion engines and method of production thereof

摘要

The invention concerns a thermal fatigue test stand for combustion engine cylinder heads comprising in combination: a cylinder head (C) support (14) having at least a cylinder head zone capable of being exposed to the engine combustion; at least a burner (11) for directing a flame on the whole said zone; and at least a heat flux sensor (171) located in said cylinder head thickness at said zone to verify whether the heat flux produced by the flame is at least approximately in conformity with a predetermined value. The invention also concerns a method for calibrating such a test stand, and a method for testing cylinder heads. The invention is particular useful for developing, both from the metallurgical and geometrical viewpoints, aluminium alloy cylinder heads.