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: 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: Method and arrangement for providing an automatic gearshift procedure for a vehicle with engaged clutch-dependent power take-off (32) when the vehicle is in motion. The power take-off (32) is driven by an engine (1) via an automated disk clutch (3) and an automatic stage-geared gearbox (9) in which an intermediate shaft (11) for driving the power take-off (32) is arranged. The control unit (45) controls the gearbox (9), the disk clutch (3) and the engine (1) so that shifting when the vehicle is in motion can take place even with an engaged clutch-dependent power take-off (32).

Abstract: Method and device for controlling the position of an automatic disk clutch (3) as a function of the position of a throttle lever (48, 49) arranged in a vehicle is disclosed. In some preferred embodiments, the method is employed when starting the vehicle from stationary or virtually from stationary, in which a function (e.g., a primary function) of the disk clutch (3) is to transmit motive force from an internal combustion engine (1) arranged in a vehicle to an input shaft (7) of a stagegeared gearbox (9). The position (48, 49) of the disk clutch is also preferably controlled as a function of at least one of the parameters: vehicle weight; tractive resistance of the vehicle; and the selected transmission ratio between the gearbox input shaft and the driving wheels of the vehicle.

Abstract: Method and arrangement for automated control of a drive train (10) of a land vehicle to be executed when ground conditions exist that impede the initiation or continuation of travel of the vehicle such as being stuck on loose or slippery ground. The automated routine induces a rocking action in the vehicle purposed to aid in freeing the vehicle and permitting desired travel out of the area. As an initial step of the routine, it is determined whether such a ground condition exists. If so, drive power is applied, via a drive train (10) of the vehicle until the drive wheel (26, 30) bogs down or productive and continuous travel is established in the vehicle. A rocking-back action is permitted by a discontinuation of the drive power to the drive wheel (26, 30) of the land vehicle until a predetermined power resumption condition occurs. Reverse power can be optionally applied at this time. Otherwise, drive power is reapplied to the drive wheel (26, 30) for another attempt at forward progress.

Abstract: A stage-geared gearbox for motor vehicles, includes an unsynchronized basic gearbox, at least one synchronized auxiliary gear and at least one control unit for controlling engagement and disengagement of the gears of the gearbox and also neutral position. In the gearbox, the control unit is arranged so as, when input signals indicating that neutral position is selected are received, to put the synchronized auxiliary gear in neutral position.

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: Drivetrain for a motor vehicle including an engine (1), a gearbox (9) having an intermediate shaft (11) with intermediate shaft brake (17) and a friction clutch (3) coupled between the engine and the gearbox. A torque sensor (19) is provided, which detects the input torque to the gearbox. The intermediate shaft brake and the clutch are controlled by a control unit (12), which is programmed in predetermined instances, when the gearbox is in the neutral position, the clutch is engaged and the intermediate shaft brake is released, to measure and store the torque loss from the gearbox and then to set the brake to a predetermined level and to register and store the torque increase during the setting until constant torque is attained. This is registered and stored in the control unit together with the time for the torque increase.

Abstract: A drive unit for a motor vehicle, comprising a drive engine, a transmission having an intermediate shaft with intermediate shaft brake, and a friction clutch which is engaged between the engine and the transmission and which, via an electronic control unit, is operated by an operating cylinder. A torque transmitter is provided, which detects input torque to the transmission. The control unit is arranged so as, on predetermined occasions, when the transmission is in the neutral position, the friction clutch is disconnected and the intermediate shaft brake is applied, gradually to engage the friction clutch and to register and store, as a function of the position the operating piston of the operating cylinder, the torque measured by the torque transmitter.

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 combustion engine (1) for a motor vehicle, having electronic members (20, 23) with memory function for controlling the output torque of the engine at least in dependence on signals representing an injected quantity of fuel. Reference values of engine torque at different rev speeds are stored in the control members. A torque transmitter (24) detects and transmits to the control members a signal representing the current output torque. The control members compare the current torque with the stored reference value in order to determine whether the performance of the engine is normal.

Abstract: Method and arrangement for controlling a clutch coupling (3) via a brake control (17). The primary function of the clutch coupling (3) is to transmit motive force from an internal combustion engine (1) arranged in a vehicle to an automatic stage-geared gearbox (9) that is arranged in the vehicle, and in which the primary function of the brake control (17) is to control service brakes (16) of the vehicle. The method and the device are characterized in that at zero throttle opening, with a low gear engaged and no brake force required, a control function is activated in which the clutch coupling (3) is controlled via the brake control (17).

Abstract: Method and arrangement for facilitating hill-starting of a stationary motor vehicle. The method includes applying at least one braking device using a brake pedal and estimating the traveling resistance of the vehicle using a control unit (30). The control unit (30) determines a starting gear, a starting torque and a starting speed with regard to the estimated traveling resistance. The driver releases the brake pedal and the brakes are kept applied for a certain time. The driver operates an accelerator pedal to a position at least corresponding to the minimum transmitted torque and a clutch device (2) for a gearbox (3) is activated by the control unit (30) when the starting speed has been achieved. The control unit (30) releases the braking devices as a function of the increase in the transmitted driving torque of the clutch.

Abstract: The present invention relates to a motor vehicle comprising an internal combustion engine and a first electronic control unit (48) for controlling the engine depending on the setting of a manual throttle, an electronic control unit (45) for controlling the transmission, depending on a set position of a manual gear selector (46). The invention is characterized in that one of the control units is disposed, with fed-in parameters and thus at least knowledge of the target speed of the vehicle, the surrounding topology and the throttle opening position, to reduce the throttle opening, in those cases where the vehicle, relative to the target speed, has a speed below target speed and gravity can subsequently accelerate the vehicle. In a similar manner, the kinetic energy of the vehicle is used, in those cases where the vehicle has an above target speed and gravity can subsequently retard the vehicle.

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: Motor-driven cargo vehicle with an automated clutch (33) and gearbox (39) between the engine (31) and the vehicle drive wheels. The gearbox and the clutch are controlled by an electronic control unit (19) depending on a set position of a manual gear selector (53). The control unit is arranged, when starting off with the gear selector in the position for automatic shifting, to select the highest gear speed which makes starting off of the vehicle possible with the available torque at engine idle speed, introducing an amount of energy from the engine to the clutch which at most amounts to a predetermined maximum value.

Abstract: Method and apparatus for distributing brake torque between at least one first and one second brake device on a motor vehicle including at least two wheel pairs. The first brake device is a friction brake which acts on at least one wheel pair and the second brake device acts on at least the driven wheel pair via the transmission and is disposed before the clutch device of the transmission. Brake torque is distributed between the first and the second brake device in a manner that compensates for the loss of brake torque which occurs when the second brake device is disengaged by the clutch device of the transmission.

Abstract: Drivetrain for a motor vehicle including an engine (1), a gearbox (9) having an intermediate shaft (11) with intermediate shaft brake (17) and a friction clutch (3) coupled between the engine and the gearbox. A torque sensor (19) is provided, which detects the input torque to the gearbox. The intermediate shaft brake and the clutch are controlled by a control unit (12), which is programmed in predetermined instances, when the gearbox is in the neutral position, the clutch is engaged and the intermediate shaft brake is released, to measure and store the torque loss from the gearbox and then to set the brake to a predetermined level and to register and store the torque increase during the setting until constant torque is attained. This is registered and stored in the control unit together with the time for the torque increase. The control unit is programmed to then deactivate the brake and to register and store the torque reduction during deactivation down to the torque loss and the time taken for this.

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 apparatus for distributing brake torque between at least one first and one second brake device on a motor vehicle including at least two wheel pairs. The first brake device is a friction brake which acts on at least one wheel pair and the second brake device acts on at least the driven wheel pair via the transmission and is disposed before the clutch device of the transmission. Brake torque is distributed between the first and the second brake device in a manner that compensates for the loss of brake torque which occurs when the second brake device is disengaged by the clutch device of the transmission.