Novel Additive for Particulate Trap Regeneration
نویسنده
چکیده
Une des voies les plus prometteuses pour la régénération des filtres à particules diesels consiste à additiver le carburant avec des composés organo-métalliques. Cet article s'intéresse à un nouveau dérivé alcalin, capable de favoriser des régénérations spontanées pour des températures à l'échappement descendant jusqu'à 200 °C, et pour des teneurs en métal aussi faibles que 5 ppm. Des essais ont été réalisés sur un réacteur à suies et sur un moteur au banc, avec différentes localisations des filtres à l'échappement, montrant que le déclenchement de la régénération dépend de la température, de la masse de suie accumulée dans les structures poreuses et des conditions opératoires du moteur. Le nettoyage complet du filtre nécessite encore des températures de gaz supérieures à 400 °C, qui peuvent être atteintes lors des fonctionnements à fortes charges du moteur.
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