Un Brésilien construit un moteur à eau pour sa moto !



Ricardo Azevedo est un officier publique brésilien résidant à São Paulo. Dans son garage il a développé un moteur où il récupère l’hydrogène comme propulseur. Avec une autonomie de 500km/L, cela pourrait-il être une alternative au pétrole ?

Avec un peu de connaissances en mécanique, et beaucoup d’imagination, cet inventeur brésilien a créé, dans son garage de Sao Paulo, la Moto H2O. Ricardo Azevedo a transformé une Honda de 1993 en une moto futuriste, qui fonctionne à l’hydrogène, à faible coût. L’engin utilise une batterie de voiture pour produire de l‘électricité, et avec l‘électrolyse, l’hydrogène est isolé. La combustion fait avancer la moto.

Six mois après avoir lancé son concept, et après plusieurs tests et améliorations, Azevedo pense que son projet pourrait contribuer à réduire le niveau de pollution : seule de la vapeur d’eau s‘échappe, au lieu du monoxyde de carbone.

Pour tester sa technologie maison, l’inventeur brésilien a utilisé plusieurs types d’eau, comme l’eau potable, l’eau minérale ou même l’eau d’une rivière locale très polluée. Et le résultat n’a pas varié.

Si l’hydrogène n’est peut-être pas la seule réponse aux besoins énergétiques mondiaux, c’est au moins une alternative à la combustion de combustibles fossiles. Marcelo Alves est professeur de génie mécanique à l’Université de São Paulo, et il apprécie le procédé.

L’hydrogène est l‘élément le plus abondant dans l’Univers, mais sur terre, l’hydrogène gazeux pur est très rare, car il est trop léger. L’hydrogène en général est lié à d’autres atomes, comme de l’oxygène dans l’eau.

Les recherches sur la combustion de l’hydrogène se sont multipliées ces dernières années, et de nombreux constructeurs automobiles ont lancé différents types de véhicules.

Un moteur à hydrogène, comme celui de Ricardo Azevedo, ne crée pas de pollution, comme les émissions de carbone des moteurs à essence classiques. Bien que le marché potentiel soit énorme, il est encore freiné par les moyens de contenir en toute sécurité le gaz d’hydrogène qui reste hautement inflammable.

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