DEVICE FOR PREHEATING FLUID, IN PARTICULAR COOLANT FOR A COMBUSTION ENGINE

摘要

The invention relates to a device for heating a fluid (2), comprising a heating body (4) having a through passageway (6, 8) for the fluid and provided with at least one groove (14) on its outer surface; at least one electrical resistance (24) housed in the at least one groove (14) of the heating body. The device further comprises at least one closure plate (20) of the at least one groove (14) overlying the at least one resistance (24).