Abstract: A component housing unit for a vehicle thermal management system is configured for attachment to an exterior surface of an expansion tank having an interior surface defining an interior volume. The component housing unit is configured for connection to a first thermal control loop and a second thermal control loop. The component housing unit is configured for connecting the interior volume of the expansion tank to the first thermal control loop and the second thermal control loop respectively. The component housing unit includes a first component interface configured for direct attachment of a first system component connected to the first thermal control loop, and a second component interface configured for direct attachment of a second system component connected to the second thermal control loop.

Abstract: An expansion tank for a vehicle with dual cooling lines includes a first chamber with a first fluid pressure, wherein the expansion tank includes a first fluid connector in fluid connection with the first chamber for connection to a first cooling line, a second chamber with a second fluid pressure, wherein the expansion tank includes a second fluid connector in fluid connection with the second chamber for connection to a second cooling line, wherein the first chamber and the second chamber are in fluid connection via a pressure actuated two-way valve that acts as a one-way valve open in the direction towards the second chamber at differential pressures between the second fluid pressure and the first fluid pressure below a first predetermined differential pressure threshold and opens also in the direction towards the first chamber at differential pressures above the first predetermined differential pressure threshold.