Abstract: A heat exchanger for transferring heat from a fluid to a coolant includes a core, an entry tank, and an exit tank. The core has a first port in fluid communication with a second port. The fluid flows between the first and second ports. The entry end tank forms an entry port and is attached to and in fluid communication with the first port. The exit end tank forms an exit port and is attached to and in fluid communication with the second port. One of the end tanks includes a duct therein attached to and in fluid communication with the respective port and configured to control the flow of the fluid in the end tank. The duct may be configured to allow the port to be positioned at any desired elevation on the end tank and/or to improve dispersion or mixing of the fluid in the end tank.

Abstract: An engine cooling system for an automotive vehicle including a liquid coolant deaeration and overflow bottle having plural cells constituting a degassing chamber assembly with the first cell having only an upper fluid inlet for initially receiving liquid coolant from the engine cooling system and a lower flow-through window which leads into an adjacent cell for receiving coolant from the first cell. The other cells are likewise connected together in series and the final cell has an outlet connected back into the engine cooling system. Coolant in the cells of the degassing chamber assembly creates a liquid trap arrangement to prevent any substantial back flow of accumulated air from the deaeration chamber assembly back into the engine's cooling system when engine operation is terminated. Most importantly, this prevents any formation of air bubbles in the heater core circuit which may restrict coolant flow and seriously degrade heater effectiveness, particularly at idle and low engine speed operation.