Bugatti - aluminium water pomp - Al Cu Sn Zn Si Alloy - First World War - France

Granget. Elodie (, None) & . (MNAM (Musée National de l'Automobile de Mulhouse), Mulhouse, Alsace, France)

Complementary information

A combustion engine  transforms thermal energy into kinetic energy. This process is imperfect and releases a lot of heat through the block of the engine. Therefore, these parts need to be cooled down. A cooling system circulating water between the block [hot] and a heat exchanger (or radiator) [cold] is frequently used to fulfill this function. The water flow in this circuit can be optimised by the use of a water pump. The water is conducted from the engine to the radiator by a system of pipes.

Generally, the aluminium water pipes are located at the entrance and exit of the engine, as shown on Fig. 2

Fig. 6: Stratigraphic representation of the external surface of the water pipe in cross section using MiCorr
Fig. 7: Stratigraphic representation of the internal surface of the water pipe in cross section using MiCorr