Abstract: A drive system for a vehicle includes two electrical machines arranged between a combustion engine and an input shaft to a gearbox. The first electrical machine rotor is connected with a planetary gear component, and the input shaft of the gearbox is connected with another planetary gear component. The second electrical machine rotor is connected via a transmission with the output shaft of the combustion engine, which is connected with another planetary gear component. planetary gear's components may be locked together to rotate at the same rotational speed, and released wherein the components rotate at different rotational speeds. Further, the output shaft of the combustion engine may either be locked in position with or released from the additional planetary gear component.

Abstract: A method and an exhaust treatment system are provided for treatment of an exhaust stream that comprises nitrogen oxides NOx. The method comprises using a first slip-catalyst SC1, arranged at a first device to create a first impact on a first amount of nitrogen oxides NOx_1 An NOx-storing catalyst may store nitrogen oxides NOx. The first slip-catalyst SC1 may reduce nitrogen oxides NOx, and/or oxidize potential additive in the exhaust stream. This first impact is actively controlled, based on the first amount of nitrogen oxides NOx_1 reaching the first device. The method also comprises a second impact on a second amount of nitrogen oxides NOx_2 reaching a second device. The active control of the first impact may be by active control of the dosage of additive at the first device, and/or through an active control of an exhaust environment, for example, a temperature for the exhaust stream.

Abstract: A treatment system for providing treatment of an exhaust stream comprising nitrogen oxides NOx, in which nitrogen monoxide NO and nitrogen dioxide NO2 are comprised. When the exhaust stream passes through the treatment system, oxidation occurs of compounds comprising nitrogen, carbon and/or hydrogen. An amount of nitrogen oxides NOx reaching a reduction catalyst device downstream of the oxidizing component in the exhaust treatment system is reduced. A ratio (NO2/NOx)det between an amount of nitrogen dioxide NO2 reaching a reduction catalyst device and the amount of nitrogen oxides NOx reaching the reduction catalyst device is determined. An active control of at least one parameter related to the combustion engine is carried out, based on the determined ratio, so that the amount of nitrogen oxides NOx reaching the reduction catalyst device is increased, if the determined ratio (NO2/NOx)det exceeds an upper threshold value (NO2/NOx)threshold_high.

Abstract: An exhaust treatment system is provided for treatment of an exhaust stream, where the system comprises a first dosage device, arranged to supply a first additive into said exhaust stream and a first reduction catalyst device, arranged downstream for reduction of nitrogen oxides in said exhaust stream through the use of said first additive, and for the generation of heat through at least one exothermal reaction with said exhaust stream. A particulate filter arranged downstream of said first reduction catalyst device to catch soot particles. A second dosage device arranged downstream of said particulate filter to supply a second additive into said exhaust stream and a second reduction catalyst device, arranged downstream of said second dosage device for reduction of nitrogen oxides in said exhaust stream through the use of at least one of said first and said second additive.

Abstract: The present invention relates a control system and a method for controlling exhaust flow in an exhaust line of a combustion engine comprising at least one exhaust treatment component and an evaporator of a waste heat recovery system. The control system comprises a valve arrangement in the exhaust line control unit, a temperature sensor to sense a temperature of the exhaust treatment component and a control unit configured to position the valve arrangement in a first position, when the exhaust treatment component has a lower temperature than a specific temperature of exhaust gases directed flow through to the exhaust treatment component before being directed to flow through the evaporator, and in a second position, when the exhaust treatment component has a higher temperature than said specific temperature of exhaust gases that are directed to flow through the evaporator before being directed to flow through the exhaust treatment component.

Abstract: The present invention relates to a method to control a hybrid powertrain, comprising a combustion engine, an electric machine, a gearbox with input shaft and output shaft, wherein the combustion engine and the electric machine are connected to the input shaft. The method comprises the following steps: a) disconnecting the combustion engine from the input shaft with a coupling device, b) engaging a starting gear in the gearbox, which starting gear is higher than the gear at which the combustion engine's torque at idling speed is able to operate the input shaft, c) generating a torque in the input shaft with the electric machine, d) accelerating the electric machine, and e) connecting the combustion engine to the input shaft with the coupling device when the electric machine has reached substantially the same rotational speed as the combustion engine. The invention also relates to a hybrid powertrain and a vehicle.

Abstract: The present invention relates to a method for adapting engine control of a gas engine in a vehicle. The method comprises determining, during operation of the gas engine, the specific gas constant of a fuel gas for the gas engine. The method further comprises determining the stoichiometric air fuel ratio of the fuel gas for the gas engine. The control of the gas engine is adapted based on the determined specific gas constant and the determined stoichiometric air fuel ratio. The present invention also relates to a system for adapting engine control of a gas engine in a vehicle, to a vehicle, and to a computer program product.

Abstract: The present invention relates to a method for determining the specific gas constant and the stoichiometric air fuel ratio of a fuel gas for a gas engine. The method comprises keeping the pressure essentially constant in an inlet manifold of the gas engine, so that the pressure is not varying more than a pre-determined threshold. A first ? value is determined downstream the gas engine. The time period of gas injection into the inlet manifold is then changed. A second ? value downstream the gas engine is determined. The specific gas constant and the stoichiometric air fuel ratio of the fuel gas is then determined based on the determined first and second ? value. The present invention also relates to a system for determining the specific gas constant and the stoichiometric air fuel ratio of a fuel gas for a gas engine, a vehicle, and a computer program product.

Abstract: A method and a system for detection of torque deviations of an engine (101) in a vehicle (100). A measurement (201) is made of actual measured values Dact related to a behavior of at least one parameter which is related to an actual torque Meng_act delivered by the engine (101). This actual torque Meng_act is delivered here by the engine (101) in consequence of a torque Meng_req demanded from the engine (101). A comparison (202) is then made of the actual measured values Dact which are related to the behavior of the at least one parameter with previously determined measured values Dref of correspondingly at least one respective parameter related to the actual torque Meng_act. The previously determined measured values Dref will here have been determined during normal operation of the vehicle (100). Detection is then made of whether the actual measured actual torque Meng_act deviates from the demanded torque Mengj-eq.

Abstract: A drive system for a vehicle comprises an electrical machine, arranged between a combustion engine and an input shaft to a gearbox. The rotor of the electrical machine is connected with a component of a planetary gear, and the input shaft of the gearbox is connected with another component of such planetary gear. A first locking means may be moved between a locked position, in which the planetary gear's three components rotate at the same rotational speed, and a release position, in which the components are allowed to rotate at different rotational speeds. A second locking means is moveable between a locked position in which the output shaft of the combustion engine is locked together with a component in the planetary gear, and a release position, in which the combustion engine's output shaft is decoupled from such a component.

Abstract: The invention relates to a coupling arrangement for a gearbox, comprising a coupling sleeve, which is axially displaceable between a first and second position, a first and second rotatable element, which are connectable and disconnectable to each other by means of the coupling sleeve, an electrical machine connected to one of the first and second rotatable element, and a position indicator device for detecting the angular position of a rotor of the electrical machine. The position indicator device also is arranged to detect the axial position of the coupling sleeve.

Abstract: The present invention relates to a fuel system for an internal combustion engine, and a method to increase vaporization temperature of a fuel in the fuel system, which fuel system comprises a fuel tank, a fuel pump, a fuel filter device arranged downstream of the fuel pump, a first fuel conduit through which the fuel pump is arranged to supply fuel through the fuel filter device. A control valve, which opens and/or closes at a pre-determined pressure arranged upstream of the fuel filter device and downstream of the fuel pump, and a check valve arranged upstream of the fuel pump to prevent the fuel from flowing back to the fuel tank. A pressure, which is less than the pre-determined opening pressure of the control valve, is built up in the fuel pump after the internal combustion engine is turned off, for increasing vaporization temperature for hot start of the vehicle.

Abstract: A method for obtaining gear shifting of a vehicle, where the vehicle has a planetary gearing in the drive train, a combustion engine with an output shaft connected to a rotor of a second electric machine and to a first component of the planetary gearing, a first electric machine with a rotor connected to a third component of the planetary gearing and an input shaft of a gearbox connected to a second component of the planetary gearing. The method is started with the components of the planetary gearing interlocked by a locking means, in which they are released during the gear shifting and interlocked again after the gear shifting has been carried out.

Abstract: A method pertaining to braking of a vehicle combination (100) which combination comprises a tractor vehicle (110) with a towed vehicle (112), where both are configured to be braked. The tractor vehicle (110) is provided with a first control unit (200) having a function for regulation of coupling force between the tractor vehicle (110) and the towed vehicle (112). Regulation of coupling force includes adaptation data and the towed vehicle bears an ID specification. The method includes the steps of: transferring the ID specification from the towed vehicle (112) to the tractor vehicle (110); during a braking process, registering adaptation data associated with the braking process together with the ID specification. Also a computer program product includes program code (P) for a computer (200; 205) for implementing the method. Also a system pertaining to braking of a vehicle combination (100) and to a vehicle combination (100) is equipped with the system.

Abstract: Provided is a shift control arrangement in a gearbox, comprising a first shift rod with a first end part connectable to a first power means and second end part connected to a first shift fork; a second shift rod with first end part connectable to a second power means and second end part connected to a second shift fork; a first set of grooves in the first shift rod, a second groove in the second shift rod; and a lock pin between the first and second shift rods, which lock pin, with the first set of grooves and the second groove restrict and/or allow axial movement of the respective first and second shift rods. The first end part of the first shift rod is provided with an axial directed cut out for non-conflicting with the lock pin, and the first end part of the second shift rod is provided with a control surface for axial movement of the lock pin.

Abstract: Provided is a compressor arrangement in an air line supplying charged air to a combustion engine. The compressor arrangement comprises a compressor unit comprising a housing including an air intake passage, a compressor wheel arranged in said air intake passage, and an additional air passage allowing recirculation of air from the air intake passage in a position radially outwardly of a part of the compressor wheel. The additional air passage is configured to allow recirculation of air to an air conduit delivering an air flow to the air intake passage of the compressor unit.

Abstract: A method is provided to control a hybrid powertrain comprising an internal combustion engine, a gearbox, a range gearbox, and two electrical machines to achieve a shift operation from a low range position to a high range position with minimal to no torque interruption and optimal brake regeneration, on the one hand, and a large torque and a lame number of gear steps are achieved on the other hand.

Abstract: A method is provided to start a hybrid powertrain to optimize fuel consumption, wherein such hybrid powertrain comprises a combustion engine; a gearbox with input shaft and output shaft; a first planetary gear, connected to the input shaft and a first main shaft; a second planetary gear, connected to the first planetary gear and a second main shaft; first and second electrical machines respectively, connected to the first and second planetary gears; one gear pair connected with the first main shaft; and one gear pair connected with the second main shaft. The method comprising: ensuring that the moveable parts of each of the first and second planetary gears are respectively disconnected from each other; bringing the combustion engine to a predetermined engine speed (nice); and controlling the first and the second electrical machine in such a way that a desired torque (TDrv) is achieved in the output shaft.

Abstract: A fuel injector for a compression ignited engine comprises an injector nozzle with a nozzle body having at least one spray hole with a hole entry from a sack on the inside of the nozzle body and a hole exit on the outside of the nozzle body. The hole entry of the spray hole has a cross-section being elliptical and larger than the cross-section of the hole exit of the spray hole. The cross-sections of the hole entry and the hole exit of the spray hole are concentric as seen in the direction of a centre axis of the spray hole intersecting said cross-section.

Abstract: An engine system is provided that uses lubrication oil that forms water-soluble ash when combusted. The engine system comprises an internal combustion engine lubricated by the lubrication oil; an exhaust gas system for cleaning exhaust gases from the internal combustion engine, the exhaust gas system comprising a diesel particulate filter to capture particulate matter from the exhaust gases, wherein the particulate matter comprises the water-soluble ash; an exhaust gas conduit to lead exhaust gases from the internal combustion engine to the exhaust gas system; and condensation means to accumulate condensed water and/or to form an increased amount of condensed water and arranged in fluid connection with the exhaust gas flow upstream of the diesel particulate filter. The exhaust gas conduit is arranged to collect condensed water and lead the condensed water through the diesel particulate filter, thereby dissolving and thus removing the water-soluble ash from the diesel particulate filter.