Multi-compartment liquid reservoir (10), for a motor vehicle, including a first fluid compartment (14) equipped with a fluid inlet (18) and with a fluid outlet (22), and a second fluid compartment (16) equipped with a fluid inlet (20) and with a fluid outlet (24), the reservoir including a liquid-filling neck (12) and the compartments in fluid communication via at least one passage (30) allowing one of the compartments to be filled via the other of the compartments, the reservoir further including at least one shut-off system (44), able to move between a first position of opening of the at least one passage and a position of closure of the at least one passage, wherein the shut-off system is configured to adopt the first position by default and in the free state, and to be urged into the second position when the reservoir is in operation.

To ventilate a heat management system of an internal combustion engine, in which coolants circulate in several coolant circuits, connected inlets of a rotary valve may be opened and closed in a predetermined sequence, in order to ventilate one or more of the coolant circuits in the direction of the compensation tank, by means of at least one ventilation circuit which is in fluid connection with a coolant compensation tank. The rotary valve may be controlled by means of a control unit, wherein a non-connected inlet of the rotary valve is in fluid connection with the coolant compensation tank.

A deaeration valve includes a housing and a ball in fluid communication with housing. The ball can include a body, a seat defining a bleed passage therein, and a deaeration pin slidably disposed within the bleed passage. Further, the deaeration pin may include a head, a retention feature, and a shaft positioned between the head and the retention feature.

Systems, methods, and non-transitory computer-readable media provide a provide an apparatus for initializing cooling circulation with a de-gas pumping system in a vehicle. The apparatus includes a de-gas tank filled with cooling liquid, disposed at a first height within a chamber of the vehicle, a pump connected with the de-gas tank via a pipe, disposed at a second height lower than the first height within the chamber, and a filling reservoir disposed in proximity to the pump and at a substantially similar height with the second height within the chamber.

The present invention relates to a cooling system comprising a first cooling circuit cooling a first object, a second cooling circuit cooling a second object, an expansion tank, a first deaeration line directing coolant and air from the first cooling circuit to the expansion tank, and a second deaeration line directing coolant and air from the second cooling circuit to the expansion tank. The cooling system comprises further a deaeration valve configured to control the flow through the first deaeration line, a single expansion tank outlet line configured to direct all coolant in the expansion tank to the second cooling circuit and a connection line configured to direct coolant from the second cooling circuit to the first cooling circuit.

An engine coolant separator may include a housing having an inlet and an outlet; and a guide member fixedly mounted inside the housing, and having a spiral channel inducing a spiral flow of an engine coolant, wherein the spiral channel communicates with the inlet of the housing.

A two-stage piston in a thermostat's thermal actuator is configured for degassing entrained air from a coolant system. The first-stage part has a cylindrical shape and is terminated at one end with a rounded-conical shape and having a cylindrical cavity at an opposite end. A second-stage part has a cylindrical shape with a diameter sufficient to fit within the cylindrical cavity. A sacrificial plug is formed of a wax-like substance with a melting temperature such that the entrained air escapes from the coolant system through the thermostat. The diameter of the sacrificial plug allows placement of the sacrificial plug in a bottom of the cylindrical cavity and a length of the two-stage piston with the sacrificial plug in place forces the valve to remain open. After the sacrificial plug has melted, the length of the two-stage piston will open and close the valve with a change in coolant temperature.

A reservoir tank includes: a tank chamber for storing a cooling fluid; a gas-liquid separation chamber provided adjacently below the tank chamber in a vertical direction; a partition wall for partitioning the tank chamber and the gas-liquid separation chamber; an inflow pipe for sending the cooling fluid into the reservoir tank; and a discharge pipe for discharging the cooling fluid from the reservoir tank. The inflow pipe and the discharge pipe are connected to the gas-liquid separation chamber, the gas-liquid separation chamber has a cylindrical outer peripheral wall, the cooling fluid sent in from the inflow pipe to the gas-liquid separation chamber flows along the cylindrical outer peripheral wall in a curved manner so as to rotate around a vertical axis, and is guided to the discharge pipe, the partition wall is provided with a communication hole communicating the tank chamber with the gas-liquid separation chamber, and the communication hole is provided at a position closer to a central axis of the cylindrical outer peripheral wall than to the cylindrical outer peripheral wall when viewed in the vertical direction.

A manufacturing process for making different expansion tanks for different cooling systems and/or for different engines, each of the expansion tanks having an inlet mouth and comprising: a plastic shell comprising a) a wall defining a cavity for containing a coolant liquid; and b) at least one collar at the inlet mouth, the collar being outwardly projecting from the wall. Each of the expansion tanks further comprising a tubular insert engaging the collar and defining the inlet mouth; the tubular insert being made of plastic material; and retention means which hold the tubular insert relative to the collar. The process comprising making shells identical in shape and size, for all of the expansion tanks; and making inserts that differ in the value of their inner diameter; each inner diameter value being determined at the design stage depending on the type of cooling system and/or the type of engine.

A thermal management device for a vehicle includes heat medium circuits, a reserve tank, and a connector. The heat medium circulates through the heat medium circuits separately. The reserve tank is configured to separate an air bubble contained in the heat medium from the heat medium. The connector allows the reserve tank to come in communication with the heat medium circuits selectively. As such, an occurrence of the heat loss in the degassing performed in the reserve tank can be suppressed with the thermal management device for a vehicle including the heat medium circuits.