Patent ID: 6619379
Filing Date: 2003-09-16
Classification: B60K,F01P,F02B,F28D,Y02T,Y10S

Abstract:
A heat exchanger arrangement comprising:a coolant cooler exposed to ambient air and comprising a plurality of tubes through which coolant to be cooled flows and heat dissipating ribs connected to the tubes; and a charge-air cooler exposed to ambient air and comprising a plurality of tubes through which hot charge air flows and heat dissipating ribs connected to the tubes, the charge-air cooler having a charge-air inlet region from which hot charge air is introduced and a charge-air outlet region from which cooled charge air exits, wherein the charge-air cooler is positioned downstream of the coolant cooler relative to a direction of cooling air flow, wherein the charge-air cooler has an overlapping region in which the coolant cooler and the charge-air cooler overlap one another and a non-overlapping region in which a portion of the charge-air cooler projects substantially perpendicularly to the cooling air flow direction, beyond the coolant cooler, wherein the non-overlapping region is formed at least in the charge-air outlet region and is cooled directly by ambient cooling air, wherein the overlapping region is cooled by ambient cooling air that cools the coolant cooler, and wherein the density of the ribs of the charge-air cooler is greater in the non-overlapping region than in the overlapping region, and wherein the density of the ribs or the mutual spacing of the ribs on the outer surface and the interior of the charge-air cooler is varied.