Scania Cv Ab

Scania Cv Ab (publ)

Scania Cv Aktiebolag

Hans Wikström

Zoltan Kardos

Erik Söderberg

Rickard Pettersson

Rickard Eriksson

Pehr Söderberg

Björn Malmgren

Sofie Jarelius

Roland Ivarsson

Svante Johansson

A method for improving the performance of a motor vehicle which has a cooler and a fan for cooling the vehicle's engine, the method includes detecting (s) a temperature-related parameter which affects the engine's temperature during specific cooling conditions; and activating operation of the fan when the engine's temperature fulfils a predetermined condition; determining the (s) predetermined condition on the basis of outcome as regards engine temperature over a predetermined period of time, and/or outcome as regards the detected parameter over a predetermined period of time. A computer program product includes program code (P) for a computer () for implementing a method according to the invention. Also the device that performs the method and a motor vehicle equipped with the device are disclosed.

Device and method for improving performance of a motor vehicle

A method and a system for controlling a vehicle cooling system includes: a velocity prediction unit makes a prediction of at least one future velocity profile vfor the vehicle; a temperature prediction unit predicts at least one future temperature profile Tfor at least one component in the vehicle, based on at least tonnage for the vehicle; information related to a section of road ahead of the vehicle and on the at least one future velocity profile v. A cooling system control unit controls the cooling system based on the at least one future temperature profile Tand on a limit value temperature Tfor the respective at least one component in the vehicle so that a number of fluctuations of an inlet temperature Tfor the cooling fluid flow into the radiator is reduced and/or so that a magnitude of the flow into the radiator is reduced when a temperature derivative dT/dt for the inlet temperature Texceeds a limit value dT/dtfor the temperature derivative.

Method and system for control of a cooling system

A cooling system for a combustion engine () includes a pilot line () which has an inlet () to receive coolant from a line () of the cooling system and a thermostat () a sensing element () for monitoring the temperature of the coolant in the pilot line () and a valve (). A thermal device () in contact with the coolant in the pilot line () at a location upstream of the sensing element (). A control unit () estimates when it is appropriate to alter the coolant's operating temperature in the cooling system and, at such times, activates the thermal device () so that it warms or cools the coolant in the pilot line ().

Cooling system for cooling of a combustion engine

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.

Arrangement at a supercharged combustion engine

An arrangement for recirculation of exhaust gases of a combustion engine () in a vehicle (), including an exhaust line () to lead exhaust gases out from the combustion engine (), and a return line () for recirculating part of the exhaust gases in the exhaust line () to the combustion engine (). A high-temperature cooling system () containing a circulating coolant in the form of a liquid medium which, at an intended operating pressure in the high-temperature cooling system (), has a boiling point of at least&#xb0; C. An EGR cooler () subjects the recirculating exhaust gases in the return line () to a first step of cooling by the circulating high-temperature coolant. A radiator element () cools the high-temperature coolant by air. There is a second cooler cooled by engine coolant which cools gases in the return line. There is an optional third low-temperature cooling system and a further cooler in the third system cooling gases in the return line.

Arrangement for cooling of recirculated exhaust gases in a combustion engine

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.

Cooling arrangement for air or gas input in a vehicle engine

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.

Arrangement for recirculation of exhaust gases of a supercharged internal combustion engine

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.

Cooling arrangement at a vehicle

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.

Arrangement for heating oil in a gearbox

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.

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.

An arrangement and a method for recirculation of exhaust gases of a combustion engine. A return line extends from an exhaust line for engine exhaust gases to an inlet line for air to the combustion engine. An EGR valve in the exhaust line regulates the amount of exhaust gases led through the return line. A control unit controls the EGR valve. An EGR cooler cools the exhaust gases in the return line by means of a cooling system of the combustion engine. The control unit decides whether the coolant in the cooling system is at a too low a temperature and, if it is, controls the EGR valve so that a larger amount of exhaust gases is led through the return line with extra heating.

Arrangement and a method for recirculation of exhaust gases of an internal combustion engine

An arrangement for recirculation of exhaust gases of a supercharged combustion engine. A return line which connects an engine exhaust line to an air inlet line for air supply to the combustion engine, to recirculate exhaust gases via the return line. A first EGR cooler in which the recirculating exhaust gases in the return line are cooled, as a first step, by a first coolant in a first cooling system. A second EGR cooler in which the recirculating exhaust gases in the return line are cooled, as a second step, by a second coolant in a second cooling system, and the second coolant is adapted to be at a temperature substantially corresponding to the temperature of the ambient surroundings when it is led into the second EGR cooler. A charge air cooler for the inlet line, a radiator for the second cooling system to cool the exhaust gases and a radiator element for cooling the second coolant.

Arrangement for recirculation of exhaust gases of a super-charged internal combustion engine

Cooling device for a retarder of a vehicle engine, comprising a coolant circuit with a coolant cooler and a retarder cooler, and at least one further coolant circuit with a further coolant cooler and a further cooler. To allow more cooling capacity to be released for the retarder when the latter is activated, the cooling device has valves arranged to connect the coolant circuits together upon activation of the retarder so that at least two coolant coolers are then used for cooling the retarder, and to disconnect the coolant circuits from one another so that they revert to being separate circuits upon deactivation of the retarder.

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Johanneshov, Sweden

Hans Wikström