Methods and systems are provided for a cooling arrangement. In one example, a system comprises a separator arranged in a block coolant jacket. The separator fluidly separates an upper portion of the block coolant jacket from a lower portion of the block coolant jacket.

Disclosed is a cooling system comprising: a first cooling circuit with a first coolant pump; a second cooling circuit with a second coolant pump; an expansion tank provided with an expansion chamber for accumulation of coolant, wherein the expansion chamber is connected to the second cooling circuit to allow the expansion chamber to receive coolant from the second cooling circuit; and a deaeration device arranged in the first cooling circuit for separation of air bubbles from the coolant circulating therein. The deaeration device is located at a lower position than the expansion tank and connected to said expansion chamber via a static line to allow air bubbles separated from the coolant in the deaeration device to migrate upwards in the static line towards the expansion chamber.

Power system radiators and power systems having radiators are disclosed. An example power system includes: an engine; a generator configured to generate electrical power from mechanical power provided by the engine; power conversion circuitry configured to convert the electrical power from the generator to welding-type power; and a housing enclosing the engine, the generator, and the power conversion circuitry; and a radiator assembly configured to cool the engine and comprising a heat exchanger oriented substantially horizontally when the power system is installed.

An expansion tank for a cooling system of a motor vehicle has an inlet mouth and is provided with a shell in plastic material having a wall which defines a cavity for containing a coolant liquid; the shell has, in addition, a projecting collar, at the inlet mouth, and a first inner tubular wall, which protrudes downwards into the cavity and defines a passage with a lower outlet opening, to make the coolant liquid flow into the cavity; the shell has, in addition, a second tubular wall, projecting upwards into the cavity and defining a compartment which is vertically aligned with the passage and has an upper overflow opening vertically arranged at a height that is equal to or greater than that of the outlet opening.

A construction machine includes a cooling fan (10) and a shroud (11). The cooling fan (10) sends air drawn in via a radiator (30) to an engine. The shroud (11) is disposed on an outer peripheral side of the cooling fan and forms a passage for air to be drawn in via the radiator. The construction machine includes a tank (12) and a cover (14B). The tank (12) is disposed superior to an upper end portion of the radiator and stores cooling water to be supplied to the radiator and the engine. The cover (14B) is disposed openably in an opening (14A) formed in a top surface plate (11B) of the shroud. The tank (12) is disposed at a position adjacent to the shroud (11) on a side closer to the engine side than the cover (14B) is.

The invention relates to a tank used in an engine cooling system, the engine cooling system, and a work machine. The tank includes a housing and a partition which dividing the housing into an exhaust tank and an expansion tank which are sealed from each other. The exhaust tank includes a first connecting pipe and a second connecting pipe, the first connecting pipe being adapted to be fluidly connected to an engine cylinder jacket of the engine cooling system to introduce coolant into the exhaust tank, and the second connecting pipe being adapted to be fluidly connected to a heat exchanger of the engine cooling system to discharge the coolant into the heat exchanger. The expansion tank includes a third connecting pipe adapted to be fluidly connected to the engine cooling system. The tank further includes a guiding tube having a first end in communication with the exhaust tank, and a second end arranged in the expansion tank, so that gas contained in the coolant flowing through the exhaust tank is exported into the expansion tank through the guiding tube. The exhaust tank enables the gas in the coolant to be separated before entering the heat exchanger, and the thermal stress impact to the heat exchanger is reduced.

A degas bottle for a motor vehicle coolant system is provided. The degas bottle has a body defining an enclosed cavity bounded by an upper wall, a lower wall and a side wall extending between said upper and lower walls. An inlet extends into an upper region of the cavity proximate the upper wall and an outlet extending outwardly from a lower region of the cavity proximate the lower wall. An interior wall is disposed in the enclosed cavity. The interior wall extends from the upper wall toward the lower wall to a free end spaced from the lower wall. The interior wall has a vent opening proximate the upper wall and extends to the side wall on opposite sides of the inlet. A baffle is disposed between the interior wall and the inlet. The baffle extends from one of the upper wall or the lower wall to a free end spaced from the other of the upper wall or the lower wall.

A water-jacket structure of a cylinder head may include a plurality of intake side inlet passages installed at intake sides of the cylinder head, respectively, along a length direction of the cylinder head to introduce cooling water supplied from the water-jacket of a cylinder block into the water-jacket of the cylinder head, a combustion chamber cooling passage cooling a combustion chamber using the cooling water supplied from the intake side inlet passage, a plurality of exhaust side outlet passage disposed at exhaust sides of the cylinder head, respectively, along a the length direction of the cylinder head to discharge the cooling water passing through the combustion chamber cooling passage, and an exhaust side gallery communicating with the exhaust side outlet passage to gather the cooling water discharged from the exhaust side outlet passage.

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.

The reservoir tank includes: a tank body that stores cooling fluid; an inflow pipe for feeding the cooling fluid into the tank body; and a discharge pipe for discharging the cooling fluid from the tank body, in which the tank body has at least one tank chamber, a discharge port is provided in a bottom surface of the tank chamber or at a position adjacent to the bottom surface, the discharge pipe is connected to the discharge port, and a shield is disposed above the discharge port so as to cover the discharge port in a plan view.