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.

The invention relates to a cooling circuit (1) which comprises a first cooling loop I designed to provide thermal control of a first member and at least one second cooling loop II, III designed to provide thermal control of a second member; moreover, the cooling circuit (1) comprises a single degassing tank (6) in fluid connection with the first loop and with the at least one second cooling loop II, III and an isolating valve (70, 700) inserted between the degassing tank (6) and the at least one second cooling loop II, III designed for selectively blocking the flow between the degassing tank 6 and the at least one second cooling loop II, III.

The present invention relates to a reservoir tank for coolant that stores the coolant for cooling an internal combustion engine. The reservoir tank includes: a tank chamber that stores the coolant; an opening, which is disposed in an upper part of the tank chamber, through which the coolant flows in and flows out, and in a circumferential wall of which a breathing hole is formed; and a first communication passage, a second communication passage, and a third communication passage that respectively communicate with the opening and the tank chamber.

A manufacturing process for making different expansion tanks for different cooling systems and/or for different engines, each of said 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 said inlet mouth, said collar being outwardly projecting from said wall. Each of said expansion tanks further comprising a tubular insert engaging said collar and defining said inlet mouth; said tubular insert being made of plastic material colored in mass; and retention means which hold said tubular insert relative to said collar. The process comprising making shells identical in shape and size, for all of said 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 method for an engine is presented, wherein during a first condition, pressurized gas from an engine coolant degas bottle to an ejector positioned in a vent line coupled to a fuel vapor canister; and the contents of the fuel vapor canister are purged to an engine intake. The ejector may draw atmospheric air into the fuel vapor canister, thus enabling purging of the fuel vapor canister even when an engine intake vacuum is below a threshold. In this way, boosted engines and other engines configured to operate with reduced intake vacuum may execute canister purging events that are independent of engine intake pressure.

The present disclosure relates to an engine system having an engine and a cooling system. An engine vent line is fluidly connected to the engine for venting air from the engine system and bypassing the coolant flow circuit. The engine vent line has a hydraulic diameter and length selected to provide a predetermined engine head loss for the engine and a rate of flow of coolant in the at least one engine vent line at or below a maximum engine vent flow rate target during operation of the engine. The engine vent line comprises a helical section in which a portion is formed into a helix.

One or more techniques and/or systems are disclosed for a new coolant tank that may also provide a structural element to the frame of the engine compartment. The coolant tank is comprised of a rear wall that also makes up a portion of the firewall in the engine compartment. A structural coolant tank component is engaged with the rear wall to form the coolant reservoir. The coolant reservoir can provide support to attach structural elements of the vehicle, and can also allow for improved space efficiency in the engine compartment. Further, improved access to the filling port is provided, while continued operation and desired function is maintained even at extreme vehicle tilt.

Systems and apparatuses include a de-aeration tank for an engine system. The de-aeration tank including a single internal volume defined by walls, a diesel exhaust fluid (DEF) doser port configured to communicate coolant with a DEF doser module, and engine coolant ports configured to communicate coolant with an engine coolant system.

A liquid cooling system for cooling an electrical component, the liquid cooling system including a cooling circuit having at least one supply branch for supplying liquid coolant to an electrical component; and a de-aeration line to provide a connection between a high point and a junction point of the cooling circuit to bypass a part of the cooling circuit; wherein the pressure of the liquid coolant is lower in the junction point than in the high point during circulation of the liquid coolant in the liquid cooling system.

The invention relates to a cooling circuit (1) which comprises a first cooling loop I designed to provide thermal control of a first member and at least one second cooling loop II, III designed to provide thermal control of a second member; moreover, the cooling circuit (1) comprises a single degassing tank (6) in fluid connection with the first loop and with the at least one second cooling loop II, III and an isolating valve (70, 700) inserted between the degassing tank (6) and the at least one second cooling loop II, III designed for selectively blocking the flow between the degassing tank 6 and the at least one second cooling loop II, III.