| 主权项 |
1) Device (1) for water circulation in a cooling circuit of an internal combustion engine (3), characterized in that said device (1) comprises:
a water circulation pump comprising a body (2) defining a housing (16) for a bladed impeller (15) rotating around an axis (4), said impeller (15) being driven by the shaft (3′) of said engine (7) by means of a mechanical transmission (101); suction chamber (8) defining an intake section (8′) for said impeller (15), said chamber (8) having a circular development around said axis (4); water manifold (50) that can be connected to the outlet of a radiator (40) of said cooling circuit; a first duct (5) feeding said chamber (8) connected to a first outlet of said manifold (50) in order to be passed through a first water flow, said first duct (5) being connected to said suction chamber (8′) by means of a first opening (5′) of said chamber (8) which defines an axial inlet for said first flow in said first chamber (8); a second duct (6) feeding said chamber (8) connected to a second outlet of said manifold (50) in order to be passed through a second water flow, said second duct (6) being connected to said suction chamber (8′) by means of a second opening (6′) of said chamber (8) which defines a tangential inlet so that said second water flow is subject to a rotation around said axis (4) within said chamber (8); flow rate partition means (9) suitable to vary the flow rate of the water circulating in said first duct (5) and in said second duct (6) as a function of the operating conditions of said engine. |
