Patent ID: 8132408

Claim:
A method for cooling compressed charge air with an air-to-fluid intercooler, the air-to-fluid intercooler including a core assembly defining a central axis, an outer circumference, and an inner circumference, the method comprising: directing a flow of cooling fluid to the core assembly though a first annular tube body via an inlet and via a first circumferential passage fluidly connected to a second circumferential passage, the flow of cooling fluid exiting the annular tube body via an outlet, the second circumferential passage being circumferentially larger than the first circumferential passage, wherein the inlet is located closer to the central axis than the outlet, the inlet being angularly offset from the outlet with respect to the central axis; directing a flow of cooling fluid to the core assembly through a second annular tube body; and directing a flow of compressed charge air through a passage, a first surface of the passage being formed by an exterior surface of the first annular tube body, a second surface of the passage opposite the first surface being formed by an exterior surface of the second annular tube body, third and fourth surfaces of the passage being formed by two curved fins coupled to the exterior surface of at least one of the first annular tube body or the second annular tube body.