Abstract: A method is provided to control a drivetrain of a vehicle, especially a utility vehicle, wherein the drivetrain includes an engine with a cooling system. The cooling system includes a fan. The cooling system and the drivetrain are controlled by an electronic control unit (ECU). The ECU has access to a navigation system with topographic data. The method includes determining a topology of an upcoming route of the vehicle, estimating the load of the engine dependent of the topology of the upcoming route, estimating a temperature variation of the cooling system during the upcoming route, and controlling the drivetrain dependent on the estimated temperature variation, such that an actual temperature of the cooling system is kept below a temperature threshold value during the upcoming route of the vehicle. The temperature threshold value is dependent on a temperature at which said fan is activated.

Abstract: A method for regenerating an exhaust gas purification unit arranged in an internal combustion engine system includes setting a predefined minimum engine speed such that the exhaust gas mass flow exceeds a predefined flow value during the regeneration process. An internal combustion engine system including an exhaust gas purification unit adapted to be operated according to the method is also provided.

Abstract: A method is provided to control a drivetrain of a vehicle, especially a utility vehicle, wherein the drivetrain includes an engine with a cooling system. The cooling system includes a fan. The cooling system and the drivetrain are controlled by an electronic control unit (ECU). The ECU has access to a navigation system with topographic data. The method includes determining a topology of an upcoming route of the vehicle, estimating the load of the engine dependent of the topology of the upcoming route, estimating a temperature variation of the cooling system during the upcoming route, and controlling the drivetrain dependent on the estimated temperature variation, such that an actual temperature of the cooling system is kept below a temperature threshold value during the upcoming route of the vehicle. The temperature threshold value is dependent on a temperature at which said fan is activated.

Abstract: An engine driven vehicle includes at least one engine, and control devices that are arranged to control a transmission that is driven by the engine. The control devices are arranged to receive at least two sets of data, each set including at least one of a first signal that includes information about the gradient of the surface on which the vehicle is being driven sent from a first sensor, and at least one second signal that includes information about the vehicle's speed sent from a second sensor, and at least one third signal that includes information about the vehicle's acceleration. The control devices are also arranged to calculate at least one of two different resistance to travel constants k1 and k2, in response to the first, second and third signals, and to control the transmission in response to at least one of the constants k1 and k2.

Abstract: A motor vehicle includes a clutch and an automated transmission between the engine and the drive wheels of the vehicle. A method for shift control in the motor vehicle when starting off or under way includes continuously performing computer simulations of the future driving of the vehicle, at least in response to information on road incline and throttle opening position, for a set of different shift schedules with combinations of engine speeds when shifting and shift steps, and selecting a shift schedule from the set of shift schedules which is optimal with regard to a selected criterion.

Abstract: An engine driven vehicle includes at least one engine, and control devices that are arranged to control a transmission that is driven by the engine. The control devices are arranged to receive at least two sets of data, each set comprising at least one of a first signal that comprises information about the gradient of the surface on which the vehicle is being driven sent from a first sensor, and at least one second signal that comprises information about the vehicle's speed sent from a second sensor, and at least one third signal that comprises information about the vehicle's acceleration. The invention is characterized in that the control devices are also arranged to calculate at least one of two different resistance to travel constants k1 and k2, in response to the first, second and third signals, and to control the transmission in response to at least one of the constants k1 and k2.

Abstract: A method for regenerating an exhaust gas purification unit arranged in an internal combustion engine system includes setting a predefined minimum engine speed such that the exhaust gas mass flow exceeds a predefined flow value during the regeneration process. An internal combustion engine system including an exhaust gas purification unit adapted to be operated according to the method is also provided.

Abstract: A motor-driven vehicle includes at least an engine, control devices arranged to control a transmission driven by the engine, a first sensor that is arranged to communicate with the control devices, and a second sensor that is arranged to communicate with the control devices, with the control devices being arranged to receive a first signal sent from the first sensor that includes information about the gradient of the surface on which the vehicle is being driven, and with the control devices being arranged to receive a second signal sent from the second sensor that includes information about torque. The control devices are arranged to correct the first signal in response to the second signal, and to control the transmission in response to the corrected first signal, and thereby compensate for the effect of the torque on the first sensor.

Abstract: A motor vehicle with a clutch (3) and an automated transmission (9) between the engine and the drive wheels of the vehicle. The vehicle has control elements (45,48) for engine function and transmission function depending on a set position of an electronic gear selector (46). The control elements, with the gear selector in its position for automatic shifting, selects a gear for starting off or under way, which is determined by the gear selection strategy stored in the control means as a function of various parameters fed into the control elements. The control elements, are arranged to perform, firstly, a simulation process related to the gear selection strategy with at least one alternative set of parameters (U2-UN) and, secondly; a comparative analysis based on a first set of control parameters (U1).

Abstract: An automatic gearshifting process and/or disengagement process of a coupling-dependent power take off for a vehicle with the power take off engaged and when the vehicle is in motion. The power tapping at the power take off is minimized before a gearshift and/or disengagement of the claw clutch of the power take off takes place. One advantage is that gearshifting can be realized with engaged coupling-dependent power take off. Comfort is increased and coupling teeth wear is minimized, whilst, at the same time, a gear and the claw clutch of the power take off are able to be securely disengaged.

Abstract: Vehicle (A) with an internal combustion engine (1), an automated transmission (2) coupled to the engine, and electronic control elements (3) which control the supply of fuel to the engine combustion chambers and recirculation of exhaust from the engine exhaust side (7) to its intake side (6). The control elements are disposed to compute, while the vehicle is moving, future driving resistance and the time until a future shifting between gears and to control valve elements (9) which regulate exhaust return flow during this time to optimize fuel consumption and emissions, when the gearshifting takes place.

Abstract: Method and arrangement for controlling actual torque in a driveline of a land-based motor vehicle. Taking a direct, non-predictive measure of actual torque induced in the driveline of the motor vehicle and ascertaining a magnitude thereof. Ascertaining a magnitude of a torque demand being requested to be instituted in the driveline. Comparing the ascertained magnitude of the direct, non-predictive measure of actual torque taken is compared with a driveline-configuration dependent maximum torque threshold; in this way, an over-threshold torque condition is ascertained in the driveline based thereupon if such a condition exists. In multi-geared transmissions, the variability can be accounted for through the engagement of different ratio gears. In the event that such an over-threshold torque condition is detected, at least one of several possible over-threshold torque compensating effects will be applied to reduce or diminish the excessive portion of the torque.

Abstract: Method and arrangement for achieving lower emissions during operation of a vehicle that includes comprising a combustion engine (10) that emits exhaust gases into an exhaust system (140) having a catalyzes (320). An injection device (310) is arranged to inject a substance into the exhaust system and a transmission (90) is provided that is driven by the engine. The method includes selecting a gear in the vehicle's transmission in response to at least information about whether catalytic conversion is required and information about the temperature (T) in the exhaust system so that the selected gear regulates the temperature in the exhaust system.

Abstract: A method for identifying a road condition during driving of a vehicle. The vehicle includes an engine with an engine output shaft connected to an automated mechanical transmission via a clutch. A transmission output shaft is connected to at least one driven wheel of the vehicle, and the system further includes a vehicle suspension system with sensors for measuring the vertical movement of wheels of the vehicle relative vehicle bodywork, at least one control unit adapted to receive a variety of input signals and process those signals in accordance with programmed logic rules to issue command output signals to the engine, for torque request, to the transmission for gear shifting and to the clutch.

Abstract: A method of producing lower emissions in the operation of a vehicle includes an internal combustion engine which gives off exhaust gases to an exhaust system comprising a catalytic converter, injectors which are designed to inject hydrocarbon into at least one of the exhaust system and the engine combustion chamber, and a transmission that can be driven by the engine. The method includes a step in which a gear in the vehicle transmission is selected as a function at least of information that catalytic conversion is required and information on the temperature in the exhaust system, so that the gear selected regulates the temperature in the exhaust system. The catalytic converter is preferably of the LNC (Lean NO, Catalyst) type.

Abstract: A motor-driven vehicle includes at least an engine, control devices arranged to control a transmission driven by the engine, a first sensor that is arranged to communicate with the control devices, and a second sensor that is arranged to communicate with the control devices, with the control devices being arranged to receive a first signal sent from the first sensor that includes information about the gradient of the surface on which the vehicle is being driven, and with the control devices being arranged to receive a second signal sent from the second sensor that includes information about torque. The control devices are arranged to correct the first signal in response to the second signal, and to control the transmission in response to the corrected first signal, and thereby compensate for the effect of the torque on the first sensor.

Abstract: A method for optimizing a braking sequence in a vehicle with automatic transmission (3) and gearbox (9) and automatic cruise control, which cruise control controls acceleration and braking to achieve a set speed, taking into account the distance to the vehicle in front. Data simulations are carried out continually of how the vehicle will be driven in the future, for a set of different combinations of engine speed at which a gear change takes place, gear change step and braking sequence, and a braking sequence with associated gear change schedule is selected that will be optimal. The vehicle is equipped with at least two different braking systems, for example service brake and auxiliary brake (48, 6). The system selects to brake primarily with the braking system that has the least tendency to wear.

Abstract: Method and arrangement for providing a vehicle having an internal combustion engine and a drivetrain coupled to the internal combustion engine. A control unit is utilized for automatic gear selection, based on a function of the current rotational speed of an input shaft to the gearbox, and in which the control unit is designed to assume a first operating mode having a first working speed range with a first lower limit for downshifting to a gear with a higher transmission ratio.

Abstract: Method for regulating the rotational speed of a clutch-independent power take-off. The power take-off is driven by an engine arranged in a vehicle. The engine is connected to an automatic stagegeared transmission by way of an automated vehicle clutch. At least one control unit is provided for controlling the transmission, the vehicle clutch and the engine. The control unit controls the rotational speed of the engine as a function of the position of the throttle lever and controls the transmission as a function of the position of a gear selector. The rotational speed of the engine is regulated by way of a control and the degree of engagement of the vehicle clutch is regulated by way of the throttle lever when the power take-off is engaged and a drive position is selected by way of the gear selector. The rotational speed of the engine is automatically reduced when equipment engaged to the power take-off approaches a limit position.

Abstract: Automatic engaging method (and disengaging method) for a coupling-independent power take-off (32), which power take-off (32) is driven by an internal combustion engine (1) arranged in a vehicle. The vehicle is equipped with an automatic stage-geared gearbox (9) and an automated disk clutch (3). The control unit (45) registers that engagement of he power take-off (32) is requested; the control unit (45) disengages the disk clutch (3); the control unit (45) reduces the engine speed or stops the engine (1); the control unit (45) engages the power take-off (32); the control unit (45) couples the disk clutch (3) together or, if the engine (1) is stopped, starts the engine (1) and couples the disk clutch (3) together.