SYSTEM FOR COOLING A GASEOUS INTAKE FLUID FOR AN INTERNAL COMBUSTION ENGINE, INTEGRATED INTO A COOLING CIRCUIT OF THE ENGINE

摘要

Cooling apparatus for a supercharged internal combustion engine, comprising a circuit provided with a pump for circulating a cooling fluid between the internal combustion engine and a cooling radiator which exchanges heat with external atmospheric air; the cooling radiator has a main outlet connected to a suction side of the pump. The apparatus further comprises a conduit for cooling a gaseous intake fluid for the engine, the conduit comprising a low temperature radiator which exchanges heat with external atmospheric air, and which is connected to a secondary outlet of the cooling radiator, this outlet being different from the main outlet, and a cooler which cools the gaseous intake fluid by means of a heat exchange with the cooling fluid, connected to an outlet of the low temperature radiator, an outlet of the cooler being connected to a suction side of the pump, downstream of the main outlet of the cooling radiator.

主权项

1. Cooling apparatus for a supercharged internal combustion engine, comprising a circuit provided with a pump for circulating a cooling fluid between the internal combustion engine and a cooling radiator which exchanges heat with external atmospheric air, said cooling radiator having a main outlet connected to a suction side of said pump,
said apparatus further comprising a conduit for cooling a gaseous intake fluid for said engine, said conduit comprising a low temperature radiator which exchanges heat with external atmospheric air, and which is connected to a secondary outlet of said cooling radiator, this outlet being different from said main outlet, and a cooler which cools said gaseous intake fluid by means of a heat exchange with said cooling fluid, connected to an outlet of said low temperature radiator, an outlet of said cooler being connected to a suction side of said pump, downstream of the main outlet of the cooling radiator; wherein said cooling radiator and low temperature radiator are combined in a two-pass heat exchange unit comprising a first and a second header and a tube bundle extending between said headers; wherein said cooler further comprises a pre-cooling section having an inlet and an outlet connected, one downstream of the other, to a return conduit of the cooling circuit connected to an inlet of the cooling radiator.