SYSTÈME DE VÉHICULE ET PROCÉDÉ D'INJECTION D'UNE SOLUTION AQUEUSE DANS LA CHAMBRE DE COMBUSTION D'UN MOTEUR À COMBUSTION INTERNE

摘要

The present invention relates to a vehicle system (80) configured for injecting an aqueous solution in an air intake line (12) upstream of a combustion chamber (14) of an internal combustion engine, or in the combustion chamber (14) of the internal combustion engine, said vehicle system (80) comprising the following constituents: ⋅ a tank (16) to store an aqueous solution; ⋅ a pump (18); ⋅ an air intake line (12) upstream of a combustion chamber (14) of an internal combustion engine; ⋅ one or more injectors (20) configured for injecting aqueous solution in the air intake line (12), in the combustion chamber (14) or both; ⋅ a feed line (22) configured for feeding said injector (20) with aqueous solution pumped by the pump (18). In the vehicle system, at least a portion of at least one of the vehicle system constituents (16, 18, 12, 20, 22) or of a tank (16) component (24) is made of a polymer material. The polymer material - comprises an effective amount of at least one antimicrobial agent, or - has on its surface a surface coating containing at least one antimicrobial agent, the surface coating comprising between 0.001 % by weight and 0.25 % by weight of the at least one antimicrobial agent.