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: Method and arrangement for providing a vehicle having a combustion engine (1) with valves (7, 8) adapted to have variable valve timing and/or valve lift height. The valves are provided with operating devices (9,10) that are controlled by electronic controlling devices (3), which are arranged, while the vehicle is being driven, with the aid of entered information about at least the gradient of the road and the throttle position, to calculate future resistance to forward motion and the period of time to a future transient in the engine's operating condition, for example in association with a future change of engine operating mode and/or a future gear change in a gearbox (2) connected to the engine. The controlling devices are arranged to control valve timing and/or the valve lift height during the period of time for optimization of the engine's performance, once the transient has arisen.

Abstract: A method and a system for automatic freewheeling of a vehicle, where in the vehicle is arranged a speed-lowering arrangement, including an engine, a wheel driven by the engine via an automated stage-geared gearbox, a gas pedal for regulating the driving torque of the engine, and a control unit. The control unit is arranged to, when the freewheel function is activated and in the presence of an input signal indicating that a predetermined vehicle speed limit is exceeded, to automatically deactivate the freewheel function and brake the vehicle with the speed lowering arrangement. The control unit is arranged to reactivate the freewheel function in the presence of an input signal indicating that the vehicle speed has fallen to close to the predetermined vehicle speed limit. The future progression of the vehicle may be simulated with a view to optimizing the freewheel function in terms of good fuel economy and/or increased comfort.

Abstract: Method and arrangement for selecting a starting gear for a vehicle having an engine (3), an AMT-type transmission (5) and a power take-off (9) for maneuvering at least one body device on the vehicle. The method includes the steps of generating a first signal upon activation of the power take-off (9) for the maneuvering of at least one body device mounted on the vehicle. The gear selection strategy of the transmission (5) is controlled for selection of a predetermined starting gear in dependence on at least the first signal and maintaining the predetermined starting gear for as long as at least one predetermined condition is met.

Abstract: A method of cleaning a filter during operation of a vehicle, having an internal combustion engine, which during operation sends exhaust to an exhaust system including the filter, and a transmission drivable by the engine. The method is characterized by the step of selecting a gear ration in the vehicle transmission so that a first temperature within a first temperature interval is obtained, the first interval being dependent on a degree of plugging of the filter with regard to a first particle type. The method further includes selecting a gear ration so that a second temperature within a second temperature interval is obtained, the second temperature interval being dependent on another degree of plugging of the filter with regard to a second particle type. The first particle type and the second particle type are different from each other. The selections achieve regeneration of the filter.

Abstract: A method and a system for automatic freewheeling of a vehicle, where in the vehicle are is arranged a speed-lowering arrangement, include an engine, a wheel driven by the engine via an automated stage-geared gearbox, a gas pedal for regulating the driving torque of the engine, and a control unit. The control unit is arranged to, when the freewheel function is activated and in the presence of an input signal indicating that a predetermined vehicle speed limit is exceeded, to automatically deactivate the freewheel function and brake the vehicle with the speed lowering arrangement. The control unit is arranged to reactivate the freewheel function in the presence of an input signal indicating that the vehicle speed has fallen to close to the predetermined vehicle speed limit. The future progression of the vehicle may be simulated with a view to optimizing the freewheel function in terms of good fuel economy and/or increased comfort.

Abstract: Method for improved automatic control of a function in a terrestrial vehicle that includes an automatic control of the function, determination of the position of the vehicle on the ground (x, y) and comparison of the position of the vehicle with one or several previously stored positions. The previously stored positions are positions in which it has been determined that the control automation has carried out a control that was outside a predetermined permitted range on previous occasions, and if the determined position of the vehicle conforms with one of the previously stored positions, special previously stored control information is used to reduce the risk of the control being outside the predetermined permitted range yet again.

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 providing a vehicle having a combustion engine (1) with valves (7, 8) adapted to have variable valve timing and/or valve lift height. The valves are provided with operating devices (9,10) that are controlled by electronic controlling devices (3), which are arranged, while the vehicle is being driven, with the aid of entered information about at least the gradient of the road and the throttle position, to calculate future resistance to forward motion and the period of time to a future transient in the engine's operating condition, for example in association with a future change of engine operating mode and/or a future gear change in a gearbox (2) connected to the engine. The controlling devices are arranged to control valve timing and/or the valve lift height during the period of time for optimization of the engine's performance, once the transient has arisen.

Abstract: Method and arrangement for selecting a starting gear for a vehicle having an engine (3), an AMT-type transmission (5) and a power take-off (9) for maneuvering at least one body device on the vehicle. The method includes the steps of generating a first signal upon activation of the power take-off (9) for the maneuvering of at least one body device mounted on the vehicle. The gear selection strategy of the transmission (5) is controlled for selection of a predetermined starting gear in dependence on at least the first signal and maintaining the predetermined starting gear for as long as at least one predetermined condition is met.

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: 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: A vehicle having a combustion engine supercharged by a turbocharger (6) with variable turbine geometry and having electronic control members (3) controlling the supply of fuel and air to the combustion chamber of the engine. The control members are designed, during forward travel of the vehicle, on the basis of input information on at least road gradient and gas pedal position, to estimate future road resistance and the time period up to a future transient in the operating condition of the engine. The control members are designed to control changes in the turbine geometry during the time period so as to optimize the response of the engine when the transient arises.

Abstract: The invention relates to a method for up-shifting of an automatic or semiautomatic gearbox which is connected to an engine equipped with an additional engine brake, which method comprises determining an expected value of the speed derivative (ESGe) of said engine during said gear-shifting. The invention is characterized in that said method comprises measuring the speed derivative (ESGm) of the engine during said gear-shifting (21), calculation of a difference value which corresponds to the difference between the measured value of the speed derivative (ESGm) and the expected value of the speed derivative (ESGe), and updating the expected value of the speed derivative (ESGe) to a new value which more closely corresponds to said measured value of the speed derivative (ESGm) if said difference value exceeds a predetermined threshold value (x). The invention also relates to a device for such engine braking.

Abstract: The invention relates to a method for up-shifting of an automatic or semiautomatic gearbox which is connected to an engine equipped with an additional engine brake, which method comprises determining an expected value of the speed derivative (ESGe) of said engine during said gear-shifting. The invention is characterized in that said method comprises measuring the speed derivative (ESGm) of the engine during said gear-shifting (21), calculation of a difference value which corresponds to the difference between the measured value of the speed derivative (ESGm) and the expected value of the speed derivative (ESGe), and updating the expected value of the speed derivative (ESGe) to a new value which more closely corresponds to said measured value of the speed derivative (ESGm) if said difference value exceeds a predetermined threshold value (x). The invention also relates to a device for such engine braking.

Abstract: Method and arrangement for engine breaking in motor vehicles having an internal combustion engine with at least one cylinder, at least one exhaust valve at the cylinder and a rocker arm (4) for activation of the exhaust valve. The rocker arm (4) is arranged on a hollow rocker arm shaft (5) and arranged to be effected by ridges (2a, 2b, 2c) on a camshaft (2), the device additionally having a control valve (15, 16) for controlling the oil pressure in the rocker arm shaft (5), and means (6; 14) receptive to an increase of the oil pressure in the rocker arm shaft (5) being integrated in the rocker arm (4) for absorbing a play between the rocker arm (4) and the exhaust valve in the case of increase oil pressure. At least one of the ridges (2b, 2c) causes opening of the exhaust valve with an engine breaking effect.

Abstract: Method and arrangement for engine breaking in motor vehicles having an internal combustion engine with at least one cylinder, at least one exhaust valve at the cylinder and a rocker arm (4) for activation of the exhaust valve. The rocker arm (4) is arranged on a hollow rocker arm shaft (5) and arranged to be effected by ridges (2a, 2b, 2c) on a camshaft (2), the device additionally having a control valve (15, 16) for controlling the oil pressure in the rocker arm shaft (5), and means (6; 14) receptive to an increase of the oil pressure in the rocker arm shaft (5) being integrated in the rocker arm (4) for absorbing a play between the rocker arm (4) and the exhaust valve in the case of increase oil pressure. At least one of the ridges (2b, 2c) causes opening of the exhaust valve with an engine breaking effect.

Abstract: Methods for controlling intake air flow to an internal combustion engine having an output shaft driven by the internal combustion engine, an intake air pipe, an exhaust gas pipe, a compressor located in the intake air pipe, a turbine located in the exhaust gas pipe, a transmission system connecting turbine, compressor, and output shaft for energy transfer between the turbine and compressor, between the turbine and output shaft, and between the output shaft and compressor. The transmission system includes a variable transmission between the output shaft and compressor and a control means for controlling the gear ratio in the variable transmission.

Abstract: Method and arrangement for regulating the rotational speed of a crankshaft included in an internal combustion engine during a gear changing process of a gearbox connected to the internal combustion engine. The arrangement includes a compressor mounted in connection with the air inlet of the internal combustion engine. A transmission having a variable gear ratio is located between the crankshaft and a driving shaft arranged in connection with the compressor, and a control unit is arranged to control the gear ratio between the crankshaft and the compressor. When changing from a higher to lower gear, the control unit is arranged to control the gear ratio between crankshaft and compressor so that the gear ratio between these components is reduced, and wherein moment of inertia is transferred from compressor to crankshaft resulting in an acceleration of the crankshaft.

Abstract: Methods for controlling intake air flow to an internal combustion engine having an output shaft driven by the internal combustion engine, an intake air pipe, an exhaust gas pipe, a compressor located in the intake air pipe, a turbine located in the exhaust gas pipe, a transmission system connecting turbine, compressor, and output shaft for energy transfer between the turbine and compressor, between the turbine and output shaft, and between the output shaft and compressor. The transmission system includes a variable transmission between the output shaft and compressor and a control means for controlling the gear ratio in the variable transmission.