Abstract: An arrangement for a supercharged combustion engine including a first compressor subjecting air to a first compression step, a second compressor subjecting the air to a second compression step, a first cooling system with a circulating coolant, a second cooling system with a circulating coolant which is at a lower temperature than the coolant in the first cooling system, a first charge air cooler applied to an air inlet line to the engine for cooling compressed air, the first cooler is located between the first compressor and the second compressor and is cooled by coolant from the second cooling system, a second charge air cooler applied to the air inlet line at a location downstream of the second compressor and is cooled by coolant from the first cooling system, and a third charge air cooler applied at a location downstream of the second charge air cooler and cooled by coolant from the second cooling system.

Abstract: An arrangement for maintaining an operating temperature of a battery (8) in a vehicle (1). A cooling system (12) with a circulating coolant. A radiator (14) to cool the coolant includes a heat-transfer region (12a) where the coolant is in contact with the battery (8). An AC installation with a circulating refrigerant includes a first circuit with a first evaporator (21) in which a refrigerant cools air in a driving cab space (2) of the vehicle (1), and a first condenser (17) where the refrigerant releases thermal energy; a second circuit with a second evaporator where the refrigerant cools the coolant in the cooling system (12), and a second condenser (24) where the refrigerant warms the coolant in the cooling system (12).

Abstract: An arrangement for a supercharged combustion engine (2) including a first cooling system with a circulating coolant, a second cooling system with a circulating coolant which is at a lower temperature than the coolant in the first cooling system, and a cooler (10, 15) in which a gaseous medium which contains water vapor is to be cooled by the coolant in the second cooling system. A first valve (32) which can be placed in a first position whereby it prevents coolant from the first cooling system from being led to the second cooling system via a first connecting line (30), and a second position whereby it allows warm coolant from the first cooling system to be led to the second cooling system via the first connecting line (30). The warm coolant from the first cooling system is intended to circulate at least a certain distance (26b, c) in the second cooling system so that it passes through the cooler (10, 15).

Abstract: An arrangement for a supercharged combustion engine (2), to prevent ice formation in a cooler (10, 15). The arrangement comprises a low-temperature cooling system with a circulating coolant and a cooler (10, 15) in which a gaseous medium which contains water vapour is cooled by the coolant in the cooling system. An electric circuit with an electric warming unit (28, 28a, 28b) is positioned in contact with the coolant in the second cooling system, a voltage source (36, 36a, 36b) and a circuit-breaker (30, 30a, 30b) which can be placed in a first position whereby it disconnects the warming unit (28, 28a, 28b) and the voltage source (36, 36a, 36b) and in a second position whereby it connects together the warming unit (28, 28a, 28b) and the voltage source (36) so that the warming unit (28, 28b, 28b) receives electrical energy and warms the coolant in the cooling system.

Abstract: A cooling fan (10) for a vehicle engine (50), having a fan casing (60) and a fan rotor (12) which is movable axially relative to the fan casing during operation. There is an actuator (20) for moving the fan rotor (12) to positions which represent various degrees of protrusion (a) from an end of the fan casing (60) in order to optimise the fan's suction capacity and efficiency on the basis of current operating parameters such as fan speed and vehicle velocity.

Abstract: A cooler arrangement for a vehicle which is powered by a supercharged combustion engine. The vehicle has at least one charge air cooler (10) for cooling of compressed air which is led to the combustion engine (2), and an energy recovery system. The vehicle also has a cooler arrangement of a first cooling circuit with a first cooler (20) for cooling a circulating coolant, a second cooling circuit with a second cooler (26) for cooling a circulating coolant to a lower temperature than the first cooler (20), and a third cooling circuit with a third cooler (29) for cooling a circulating coolant to a lower temperature than the second cooler (26). The coolant in the third cooling circuit cools the compressed air in the charge air cooler (10) and/or a medium in a condenser (45) in a cooling medium line (32).

Abstract: An expansion tank (28) comprising a passage (34) with a an inlet aperture (34a) for liquid replenishment of the expansion tank (28), a cover (32) which in a non-fitted state leaves the passage (34) clear and in a fitted state closes the passage (34), and a first expansion chamber (29) for receiving liquid which circulates in a first system (A). The expansion tank (28) includes a second expansion chamber (30) for receiving liquid which circulates in a second system (B) and said passage (34) divides, at a distance from the inlet aperture (34a), into a first branch (34b) which leads liquid to the first expansion chamber (29) and a second branch (34c) which leads liquid to the second expansion chamber (30).

Abstract: An arrangement for cooling oil in a gearbox in a vehicle which is powered by a combustion engine, the arrangement including an oil cooler, an oil system configured to circulate oil between the gearbox and the oil cooler, and a coolant circuit configured and operable to lead coolant to the oil cooler. The coolant circuit includes a radiator element for cooling the coolant and a line to lead the cooled coolant from the radiator element to the oil cooler. The coolant circuit has a flow-regulator to regulate the coolant flow through the radiator element for imparting to the coolant a temperature which makes possible a desired cooling of the oil in the oil cooler.

Abstract: The present invention relates to a cooler arrangement in a vehicle powered by a combustion engine. The cooler arrangement comprises a first cooling element for cooling a first medium in the form of a circulating coolant, and a radiator fan adapted to generating an air flow through the first cooling element for cooling the coolant when it circulates through the first cooling element. The cooler arrangement comprises also a tubular casing adapted to serving as a flow passage for the air which passes through the first cooling element and at least one further cooling element for cooling a second medium, which further cooling element is arranged in the flow passage at a position downstream of the first cooling element with respect to the intended direction of flow of the cooling air through the flow passage.

Abstract: The present invention relates to an arrangement for recirculation of exhaust gases of a supercharged combustion engine. The arrangement comprises an exhaust line intended to lead exhaust gases out from the combustion engine, an inlet line intended to lead air to the combustion engine, a compressor adapted to compressing the air in the inlet line to above atmospheric pressure, and return line which connects the exhaust line to the inlet line. The arrangement comprises an EGR cooler in which the recirculating exhaust gases in the return line are cooled by the air in a portion of the inlet line which is situated upstream of the compressor with respect to the direction of flow of the air in the inlet line.

Abstract: A cooling arrangement for a vehicle which is powered by a combustion engine. The cooling arrangement includes an air passage through which air flows in a specific direction, and at least three cooling elements to effect cooling of a medium. The three cooling elements are arranged one after another in the air passage such that at least part of the air which flows through the air passage flows successively through all of the cooling elements and cools the media in the respective cooling elements. The cooling elements are arranged one after another in the air passage in a sequence which is related to the temperature of the media in the respective cooling elements such that the air which flows through the cooling elements in the air passage cools a succession of media, each media in succession is at a higher temperature than the one preceding it.

Abstract: An arrangement for recirculation of exhaust gases of a supercharged combustion engine includes a return line for recirculating exhaust gases, an air-cooled EGR cooler and a bypass line having an extent such that it can lead recirculating exhaust gases past the EGR cooler. A valve is operable to be placed in a first position to lead the whole flow of recirculating exhaust gases through the EGR cooler during situations where there is no risk of ice formation in the EGR cooler, and in a second position to lead the whole flow of recirculating exhaust gases through the bypass line during situations where there is risk of ice formation in the EGR cooler.

Abstract: An arrangement for cooling oil in a gearbox of a vehicle which is powered by a combustion engine. An oil cooler is fitted in the vehicle close to the gearbox. An oil system circulates oil between the gearbox and the oil cooler. An oil circuit contains a circulating coolant to cool the oil in the oil cooler. A cooling element cools the coolant by air which flows through the cooling element. The cooling element is situated at a location in the vehicle where air at the temperature of the surroundings flows through it. The cooling circuit includes a line to lead the cooled coolant from the cooling element to the oil cooler. The oil in the oil cooler can thus be cooled to a temperature close to the temperature of the surroundings.

Abstract: A charge air cooler comprises at least one tubular element with an internal flow duct for guiding compressed air, and a tank for receiving the compressed air before it is led through the flow duct. The compressed air is cooled by a first cooling medium of ambient air as it passes through the flow duct. A cooling element at least partly situated inside the tank provides the compressed air in the tank with a first step of cooling before the air is led to the flow duct wherein the air undergoes a second step of cooling.

Abstract: A cooling arrangement for a vehicle engine including at least one cooling element which has flowing through it a gaseous medium operable to being cooled by an external air flow which flows in a specified direction through the cooling element during operation of the combustion engine. A heat-supplying element is fitted at a location upstream from the cooling element with respect to the direction of the cooling air flow so that at least part of the air flowing through the heat-supplying element also flows through the cooling element. A control device is operable to activate the heat-supplying element so that the air flowing through the heat-supplying element is warmed during situations where there is risk of the gaseous medium in the cooling element being cooled to below a lowest acceptable temperature. The heat-supplying element and the cooling element have a connection so that they constitute a composite unit.

Abstract: An arrangement for warming the oil in a gearbox in a vehicle powered by a combustion engine. A first pipe system with a first flow device which makes possible circulation of oil from the combustion engine through a heat exchanger. A second pipe system with a second flow device makes possible circulation of oil from the gearbox through the heat exchanger. A control device controls the flow devices so that flow of oil through the heat exchanger is obtained in situations in which the oil in the gearbox is at a too low temperature with respect to a desired temperature. The motor oil in the combustion engine can thus be used for heating the oil in the gearbox during cold starts of the combustion engine.

Abstract: A radiator element in a motor vehicle is disclosed, the motor vehicle including a body, a driver's space with at least one door for access to the driver's space, and a step element with at least one step and situated below the door. An engine cooling system includes a radiator element in which a circulating coolant is cooled by an airflow flowing through the radiator element. The radiator element is positioned close to the step element. An air inlet aperture is positioned between or behind the steps. The radiator element is a second radiator element of the vehicle, operable when the first radiator element cools insufficiently.

Abstract: An arrangement for cooling of recirculating exhaust gases of a combustion engine (2) in a vehicle (1). The arrangement comprises a first EGR cooler (14), a driving means (15, 31) adapted to driving air through the first EGR cooler (14) in order to cool the exhaust gases in a return line (11) which are subjected to a first step of cooling in the first EGR cooler (14), and at least one second EGR cooler (19, 20) in which the exhaust gases in the return line (11) are intended to undergo a second step of cooling. The arrangement comprises an air line (16) which extends at least from the first EGR cooler (14) to the exhaust pipe (4) at a location between the turbine (5) and the exhaust-treating component (18a, 18b), which air line (16) is adapted to leading warm air from the first EGR cooler (14) into the exhaust line (4) at said location.

Abstract: An arrangement for recirculation of exhaust gases of a supercharged combustion engine in a vehicle. A first EGR cooler effects a first step of cooling the recirculating exhaust gases in the return line by means of a cooling medium in the form of a cooling air flow, and a second EGR cooler effects a second step of cooling the recirculating exhaust gases in the return line by means of a cooling medium which is at substantially the temperature of the surroundings. The first EGR cooler is fitted in an internal region of the vehicle which is adapted to have the cooling air flow passing through it during operation of the combustion engine.

Abstract: A cooler device for a motor vehicle includes a charge air cooler with a first cooler element, an EGR cooler with a second cooler element, the first and second cooler elements are arranged beside and substantially in plane with one another. The cooler elements each comprise pipelines for the respective medium to be cooled. Air passages for a cooling air flow are arranged between the pipelines. A screening device is arranged in front of or behind the cooler elements to regulate the air flow through elements. A control mechanism switches the screening device to and from between an open position in which the screening device does not, or at least does not appreciably, limit air flow through the air passages of the cooler elements, and a closed position in which the screening device limits the air flow through the air passages between all of the pipelines of the second cooler element and the air flow through the air passages between only some of said pipelines of the first cooler.