Abstract: A radiator fan arrangement for a vehicle which is powered by a combustion engine. The radiator fan arrangement includes at least one cooling element for cooling a medium, and a first radiator fan for continuously generating a forced air flow through at least one first region of the cooling element in order to cool the medium during operation of the combustion engine. The radiator fan arrangement also includes at least one extra radiator fan for being activated to generate an increased air flow through at least one second region of said cooling element in situations where the first radiator fan cannot provide sufficient air flow to cool as necessary the medium in the cooling element.

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: A cooler arrangement of a vehicle includes a charge air cooler which itself includes at least one pipeline for guiding compressed air during cooling and a first tank for receiving the cooled compressed air from the first pipeline, and an EGR cooler which includes at least one second pipeline for guiding exhaust gases during cooling, and a second tank operable to receive the cooled exhaust gases from the second pipeline. A mechanical connection connects an end of the first tank of the charge air cooler to an end of the second tank of the EGR cooler so that the tanks constitute a composite tank unit in a fitted state in the vehicle.

Abstract: An arrangement for controlling cooling of a gaseous medium for a supercharged combustion engine (2): A low temperature cooling system with a coolant, a coolant pump (27) for circulating the coolant in the cooling system. A cooler (10, 15) in which a gaseous medium which contains water vapour is intended to be cooled by the coolant in the cooling system. At least one sensor (33, 35) for detecting a parameter which indicates whether the gaseous medium is cooled so much that there is ice formation or risk of ice formation in the cooler (10, 15). A control unit (31) for receiving information from the sensors (33, 35) and for deciding whether there is ice formation or risk of ice formation in the cooler (10, 15) and, if so, for controlling the coolant pump to be temporarily switched off or circulate a reduced flow of coolant through the cooler (10, 15) relative to a normal flow.

Abstract: An arrangement for a supercharged combustion engine (2), including at least one compressor (6a, 6b) for compressing air in a first cooling system, the first cooling system having a first circulating coolant, a second cooling system with a second circulating coolant which during normal operation of the combustion engine is at a lower temperature than the first coolant in the first cooling system, at least one charge air cooler (9a, 9c) applied in the air inlet line (8) and being cooled by coolant from the second cooling system. The second cooling system includes a first radiator element (24) and a second radiator element (36) arranged in series with the first radiator element (24) in the second cooling system, so that at least part of the coolant which circulates in the second cooling system undergoes two steps of temperature lowering during a single round of circulation in the second cooling system.

Abstract: An arrangement for a supercharged combustion engine including a first compressor (6a) subjecting air to a first compression step, a second compressor (6b) 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 (9a) applied to an air inlet line to the engine for cooling compressed air, the first cooler is located between the first compressor (6a) and the second compressor (6b) and is cooled by coolant from the second cooling system, a second charge air cooler (9b) applied to the air inlet line at a location downstream of the second compressor (6b) and is cooled by coolant from the first cooling system, and a third charge air cooler (9c) applied at a location downstream of the second charge air cooler (9b) and cooled by coolant from the second cooling system.

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: 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: 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 which is at above atmospheric pressure to the combustion engine, a compressor adapted to the inlet line so that it is possible, via the return line, to recirculate exhaust gases from the exhaust line to the inlet line. The arrangement comprises a first 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 downstream of the compressor in the inlet line with respect to the direction of flow of the air in the inlet line.

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: An arrangement for a supercharged combustion engine for preventing ice formation in a cooler. A first cooling system with a circulating coolant. A second cooling system with a circulating coolant which during normal operation of the combustion engine is at a lower temperature than the coolant in the first cooling system. The cooler in which a gaseous medium for the engine and which contains water vapour is intended to be cooled by the coolant in the second cooling system. A heat exchanger. A valve which can be placed in a first position wherein coolant from at least one of the cooling systems is prevented from flowing through the heat exchanger and in a second position wherein coolant from both of the cooling systems flows through the heat exchanger so that the coolant in the second cooling system is warmed by the coolant in the first cooling system.

Abstract: An arrangement for a supercharged combustion engine includes a first compressor compressing air in the engine air inlet line as a first stage and a second compressor compressing the air in the inlet line as a second stage, a first coolant-cooled charge air cooler cooling the air after it has been compressed in the first stage and before it is compressed in the second stage, and an air-cooled charge air cooler cooling the compressed air when it has been compressed by the first stage, a second coolant-cooled charge air cooler cooling the compressed air after it has been compressed in the second stage and before it is compressed in the air-cooled charge air cooler. Exhaust gases in an exhaust line from the engine drive turbines which operate the compressors. A return line from the exhaust line and connected into the inlet line has a cooler for the exhaust gases before mixing the gases with the inlet air.

Abstract: An arrangement and a method for recirculation of exhaust gases of a combustion engine. A return line returns exhaust gases to the combustion engine. An EGR cooler device cools the exhaust gases before the gases are led to the combustion engine. A container gathers condensate which forms in the EGR cooler device. A line connects the container to a flow section for the exhaust gases in the EGR cooler device. A driver leads condensate from the container into the flow section for the exhaust gases in the EGR cooler device.

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.

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: A cooler arrangement of a vehicle includes a charge air cooler which itself includes at least one pipeline for guiding compressed air during cooling and a first tank for receiving the cooled compressed air from the first pipeline, and an EGR cooler which includes at least one second pipeline for guiding exhaust gases during cooling, and a second tank operable to receive the cooled exhaust gases from the second pipeline. A mechanical connection connects an end of the first tank of the charge air cooler to an end of the second tank of the EGR cooler so that the tanks constitute a composite tank unit in a fitted state in the vehicle.

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: 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 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.