An expansion tank arrangement is for a cooling circuit. The expansion tank arrangement has: an expansion tank having a housing with an internal volume configured to receive a cooling fluid; a fluid connection configured to connect the expansion tank to the cooling circuit for supplying the cooling fluid; and a pneumatic connection configured to connect the expansion tank to a pneumatic supply device for pressurizing the expansion tank with a pneumatic medium using a pneumatic supply line. A valve that is configured to influence the pressurization of the expansion tank is in the pneumatic supply line between the expansion tank and the pneumatic supply device.

A coolant supply module includes a reservoir tank configured to store a coolant, a main body connected to the reservoir tank so that the coolant stored in the reservoir tank flows, at least one pump mounting portion formed in the main body so that at least one water pump is mounted, a valve mounting portion formed in the main body between the at least one pump mounting portion so that a valve device is mounted, and a controller mounted in the main body and electrically connected to the at least one water pump, wherein the main body includes a branch portion allowing a portion of a coolant introduced into one of the at least one pump mounting portion to flow into another pump mounting portion.

A cylinder head is disclosed herein to allow for temperature control of exhaust gases exiting from an associated exhaust manifold. The cylinder head includes a combustion section that defines a plurality of combustion chambers and an exhaust manifold coupled to the combustion section. The combustion section fluidly couples to exhaust inlets defined by the exhaust manifold. The exhaust manifold includes at least one exhaust passageway in fluid communication with the exhaust inlets and in fluid communication with an exhaust outlet to receive combustion gases from the combustion section and output the same via the exhaust outlet. The exhaust manifold further includes at least one coolant passageway that at least partially surrounds the at least one exhaust passageway to pass coolant therethrough in order to draw and reject heat from exhaust gases.

Provided is a reservoir tank which includes: a tank body that stores cooling fluid; an inflow pipe configured to feed the cooling fluid into the tank body; a discharge pipe configured to discharge the cooling fluid from the tank body; a columnar member erected inside the tank body; and a guide member provided inside the tank body, in which the inflow pipe is connected to the tank body at a position vertically below a liquid level of the cooling fluid stored inside the tank body, the guide member is configured to guide a flow of the cooling fluid flowing from the inflow pipe into the tank body, the flow being guided into a substantially horizontal direction toward the columnar member, the columnar member extends in a substantially vertical direction when viewed along the flow of the cooling fluid toward the columnar member, and a part of the columnar member is disposed on an extension line of the flow of the cooling fluid toward the columnar member.

A radiator filler neck for use with a radiator includes a core between upper and lower tanks and a pressure-valve radiator cap. The filler neck includes a hollow cylindrical body including a side wall between upper and lower openings. The upper opening includes an upper sealing seat for the radiator cap. The lower opening includes an internal sealing seat for the pressure valve of the radiator cap. The body has an interior within the side wall and between the upper and lower openings. An overflow aperture is provided in the interior of the body to permit transfer of overflow from the interior via an overflow passage to a concealed exterior overflow outlet; and the side wall does not include a visible exterior overflow outlet.

A water heating system for a vehicle includes, among other things, a container and an assembly of a vehicle. The assembly has a thermal energy level that increases as a result of operating the vehicle. The system further includes a path that communicates water back-and-forth between the container and the assembly to increase amount of thermal energy within water that is in the container, and an outlet configured to dispense water from the container for use by a user.

A reserve tank includes a vapor-liquid separator, an inlet portion, an outlet portion, and a protrusion. The vapor-liquid separator defines an inner space for separating a vapor phase and a liquid phase of a cooling water. The inlet portion defines a first opening through which the cooling water is supplied into the inner space and the outlet portion defines a second opening through which the cooling water is discharged from the inner space. The protrusion protrudes upward from a bottom surface of the vapor-liquid separator. An inner circumferential surface of the vapor-liquid separator and an outer circumferential surface of the protrusion are coaxially provided to define an annular passage in the inner space. The cooling water introduced from the first opening flows spirally in the annular passage.

An engine-and-electric-machine assembly is provided that includes an engine and an electric machine, a crankshaft being provided in the engine, the crankshaft including a main body and an extension section that extends out to the exterior of the engine, the extension section forming a rotation shaft of the electric machine, and a rotor of the electric machine being mounted on the extension section, wherein a terminal of the rotation shaft is connected to a coolant pump, a rotor of the coolant pump is mounted to the rotation shaft, and while the rotation shaft is rotating the rotation shaft drives the coolant pump to provide coolant to the electric machine. By connecting the rotation shaft of the electric machine to the coolant pump, the pump can be highly integrated into the system and reduce manufacturing cost.

A coolant supplying module of supplying a coolant stored in a reservoir tank to an electrical component cooling circuit and a battery cooling circuit may include a main body connected to the shared reservoir tank, at least one water pump mounting portion formed at the main body to mount at least one water pump provided in the electrical component cooling circuit and the battery cooling circuit, and a valve mounting portion formed at the main body such that a coolant valve for changing flow path of the coolant circulating through the electrical component cooling circuit and the battery cooling circuit is mounted, wherein a main connecting portion and a sub connection portion are respectively formed on the main body to be connected to the shared reservoir tank.

The present disclosure provides a device for preventing the backward air flow of a reservoir tank for a vehicle, which may mount an backward air flow prevention tube extending to coolant on a connector of a reservoir tank to which a degassing hose is connected, and form an air collection slit hole communicating with an upper space of the reservoir tank in the upper portion of the tube to be openable or closable, thereby easily preventing the phenomenon in which the air within the reservoir tank flows back toward an engine, and easily collecting the air introduced from the engine side.