Device for Supplying a Fluid at Risk of Freezing to the Combustion Chambers of an Internal Combustion Engine

A device for supplying a liquid at risk of freezing to the combustion chambers of an internal combustion engine, in particular an internal combustion engine driving a motor vehicle, is designed to convey the liquid at risk of freezing at least from a section of a supply line, through which the liquid travels from a storage container to a supply unit to the internal combustion engine, back to the storage container. In addition, an aeration valve is provided near to the supply unit and branching off from the supply line, via which the supply line is connected to the environment in the open state. When viewed in the direction of the storage container, downstream of the aeration valve, an air separation/pressure reservoir structural unit connected to the supply line is provided, which is designed to at least proportionally discharge air content out of the supply line and out of the liquid located in the supply line in a section positioned at the top in the mounted state, and to act as a pressure reservoir acting on the liquid in the supply line.