摘要:
The present invention relates to an arrangement for a supercharged combustion engine (2). The arrangement comprises at least one compressor (6a, 6b) adapted to compressing air in 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, and at least one charge air cooler (9a, 9c) applied in the inlet line (8) and adapted to being cooled by coolant from the second cooling system. The second cooling system comprises 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.
摘要:
A cooling fan (10) for a vehicle engine (50), comprising a fan casing (60) and a fan rotor (12) which is movable axially relative to the fan casing during operation. According to the invention 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.
摘要:
The present invention relates to an arrangement for a supercharged combustion engine (2). The arrangement comprises a first compressor (6a) adapted to compressing the air in the inlet line (8) as a first stage and a second compressor (6b) adapted to compressing the air in the inlet line (8) as a second stage, a first coolant-cooled charge air cooler (9a) adapted to 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 (9c) adapted to cooling the compressed air when it has been compressed by the second stage. The arrangement comprises a second coolant-cooled charge air cooler (9b) adapted to cooling the compressed air after it has been compressed in the second stage and before it is cooled in the air-cooled charge air cooler (9c).
摘要:
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.
摘要:
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.
摘要:
The present invention relates to an arrangement for a supercharged combustion engine (2), which arrangement comprises a first cooling system with a circulating coolant, a second cooling system with a circulating coolant which during normal operation of the combustion engine (2) 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 vapour is intended to be cooled by the coolant in the second cooling system. The arrangement comprises a heat exchanger (28) adapted to having coolant from the second cooling system flowing through it, and a valve means (30) which can be placed in a closed position whereby exhaust gases from the combustion engine are prevented from flowing through the heat exchanger (28), and an open position whereby exhaust gases from the combustion engine (2) flow through the heat exchanger (28) so that the coolant in the second cooling system is warmed by the exhaust gases.