Patent application number | Description | Published |
20080234905 | Method for Identifying a Road Condition During Driving of a Vehicle - 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. The control unit, when sensing driving conditions, sends signals indicative of a first road condition and is programmed to change gear shifting strategy for the transmission to a gear shifting strategy optimized for the first road condition if present gear shifting strategy is a second gear shifting strategy for a second road condition. One of the road conditions can be off-road. | 09-25-2008 |
20080242503 | Method for Activating a Freewheel Function in a Vehicle - A method for activating a freewheel function of a vehicle, where the vehicle is equipped with an auxiliary brake, an auxiliary braking control for controlling the braking power of the auxiliary brake between an auxiliary brake not-active position and at least one auxiliary brake active position, at least one engine, at least one wheel driven by the engine via an automated mechanical transmission, an accelerator pedal for controlling the driving torque of the engine. When deactivation of the auxiliary brake occurs due to manual positioning of the auxiliary braking control to the auxiliary brake not-active position, the freewheel function is automatically activated if a freewheeling condition is sensed. | 10-02-2008 |
20080248920 | Method for Operating an Automatic or Semi-Automatic Manual Transmission of a Heavy Vehicle When in Idle-Driving Mode - A method for operating a semi-automatic or automatic manual transmission of a heavy truck when driving at idle speed. The method includes supplying fuel to the engine of the heavy truck at a rate that facilitates engine-idle operation. In another step, the method engages the automatic or semi-automatic transmission in a gear higher than the starting gear of the transmission and permits the truck to operate at a first substantially uniform driving velocity under engine-idle power. Depending upon traffic and environmental requirements which require a slower or higher speed, the driver downshifts or upshifts the semi-automatic or automatic transmission by depressing a control pedal of the truck and then drives the truck at a second substantially uniform driving velocity under engine-idle power. For a downshift, the second substantially uniform driving velocity is less than the first substantially uniform driving velocity. For an upshift, the second substantially uniform driving velocity is greater than the first substantially uniform driving velocity. | 10-09-2008 |
20080300105 | Method for Exiting an Engine-Idle Driving Mode in a Heavy Land Vehicle - Method for exiting an engine-idle driving mode in a heavy land vehicle having an automatic transmission. The engine-idle driving mode is established in the vehicle when the engine is running substantially constantly at idle speed and a gear is engaged propelling the vehicle at a corresponding substantially constant, relatively slow vehicle speed. The method includes receiving a driver request, when in engine-idle driving mode, to accelerate from the prevailing substantially constant, relatively slow vehicle speed. The engine torque requirement is assessed for delivering the requested acceleration that can be developed from the engine while maintaining the automatic transmission in the same gear in which engine-idle driving is taking place. The requested acceleration is delivered by increasing the engine's torque output and without downshifting the automatic transmission. | 12-04-2008 |
20090023551 | METHOD FOR ADAPTING GEAR SELECTION IN A VEHICLE - A method for adapting gear selection in a vehicle, the vehicle including an engine with an engine output shaft connected to an automated mechanical transmission via a clutch, a transmission output shaft connected to at least one driven wheel of the vehicle, an arrangement for registering whether a towed vehicle is connected to said vehicle, and at least one control unit for receiving input signals including signals indicative of the towed vehicle connection, and for processing the signals in accordance with programmed logic rules to issue gear selection command output signals to the transmission for gear shifting, where the control unit, when sensing that a towed vehicle has been connected to the vehicle, changes an originally selected first gear to a lower second gear having a higher starting gear ratio compared to the first gear. The towed vehicle connection registering arrangement registers at least bounce from when the vehicle bounces into the towed vehicle for connecting the towed vehicle to the vehicle. A more sure registration of whether a towed vehicle is connected to the vehicle or not is obtained. | 01-22-2009 |
20090221399 | METHOD FOR ADAPTING AN AUTOMATED TRANSMISSION OF A HEAVY VEHICLE IN CONSIDERATION OF A SPEED SENSITIVE PTO - Method for adapting an automated transmission of a heavy vehicle in consideration of a speed sensitive PTO. The method selects appropriate gears based on the constraint that the engaged PTO should remain below a set speed limit. The information about the speed limit of the PTO is used by the transmission control unit to ensure that the engine does not drive the PTO at a speed higher than the given speed limit. The engine speed may also be limited to reduce the engine speed to prevent it from exceeding the allowable PTO speed. | 09-03-2009 |
20090222181 | METHOD FOR INSTRUCTING A COLLECTIVE GEAR SHIFT REQUEST IN A GEAR BOX AND A METHOD FOR COMMUNICATING A GEAR SHIFT INSTRUCTION TO A GEAR BOX - Method and arrangement for providing an electronic gear shift selector associated with an automatic mechanical transmission for a heavy vehicle. The gear shift selector includes a toggle switch for asserting at least one gear shift request, a counter receiving the at least one gear shift request, and a time delay for preventing communication of the at least one gear shift request from the counter until a predefined time period has passed. A method for communicating a collective gear shift request to a gear box includes asserting one or more gear shift requests with a gear shift selector, communicating the gear shift requests to a counter, determining the collective gear shift requests occurring within a predefined time period, communicating the gear shift requests occurring within the predefined time period to a gearbox. | 09-03-2009 |
20100063697 | METHOD FOR ADAPTING AN AUTOMATIC MECHANICAL TRANSMISSION ON A HEAVY VEHICLE - System and method for adapting an automatic mechanical transmission (AMT) on a heavy vehicle. The method includes assessing at least one driving characteristic of an operator of the vehicle. Specific examples are detailed below, but in general these will be driving traits that demonstrate the driver's proficiency at executing certain driving tasks. This is taken as a predictor of his or her ability to handle and properly use advanced vehicle features that are beneficial when used properly, but that typically also have a capacity for misuse. Based on the assessment, the operator is classified as being either entitled to enhanced transmission features or not entitled to enhanced transmission features. If the classification is positive, that is the driver is classified as being entitled to enhanced transmission features; at least one enhanced transmission feature is enabled for the operator. | 03-11-2010 |
20100152990 | METHOD FOR INCREASING ACTIVE DURATION TIME OF AN AUTOMATIC FREEWHEELING FUNCTION IN A VEHICLE - A method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control and during a cruise control active period is provided. The function includes an arrangement for determining a vehicle set speed (Vset speed) for when the function is allowed to be activated and means for calculating a predetermined allowable vehicle speed drop to a first under speed value (Vunderspeed) below the vehicle set speed (Vset speed). The function is controlled based on said under speed value, in order to extend active duration time of the function. | 06-17-2010 |
20100179737 | METHOD FOR ADJUSTMENT OF AN AUTOMATICALLY SELECTED GEAR SHIFTING ROTATIONAL SPEED LIMIT IN A VEHICLE - A method is provided for adjustment of an automatically selected gear shifting rotational speed limit when an automatic step geared vehicle transmission is in an automatic gear shifting drive mode, and where the transmission includes a drive mode selector for selection of at least the automatic gear shifting drive mode and a neutral mode. The adjustment of the automatically selected gear shifting rotational speed limit is performed temporarily by a driver of the vehicle when the automatic gear shifting drive mode is selected. Driving flexibility in automatic drive mode increases. | 07-15-2010 |
20100262343 | METHOD FOR A MORE EFFICIENT USE OF A COMBUSTION ENGINE IN A VEHICLE - A method for a more efficient use of a vehicle combustion engine during driving, the vehicle including an automatic step geared transmission. The method includes the steps of sensing current engine rotational speed and engine rotational speed increase, estimating necessary minimum upshift engine rotational speed for a coming gear upshift, registering that the engine rotational speed stops increasing without reaching the minimum upshift engine rotational speed, and where the engine rotational speed stops increasing relatively close to a maximum engine rotational speed where engine efficiency is relatively low and, automatically controlling engine output torque in order to limit the engine rotational speed to a first predetermined engine speed where engine efficiency is relatively high. | 10-14-2010 |
20110066340 | METHOD AND DEVICE FOR SECURING LUBRICATION OF AN AUTOMATED MANUAL TRANSMISSION IN A VEHICLE - A method and device are provided for securing lubrication of an automated manual transmission, AMT, in a vehicle, when towing the vehicle, and where a transmission lubrication system is drivingly connected to and driven by rotation of an intermediate shaft of the AMT. The following steps can be executed in mentioned order and starting from when ignition of the vehicle is switched on: registering a signal that towing of the vehicle is demanded, disengaging all gears that are arranged to drivingly engage or disengage an input shaft to the intermediate shaft of the automated manual transmission, and engaging one gear that is arranged to drivingly engage or disengage the intermediate shaft to an output shaft of the automated manual transmission. | 03-17-2011 |
20110144871 | METHOD AND DEVICE FOR SELECTING A STARTING GEAR IN A VEHICLE - A method and a vehicle transmission for selecting a starting gear in a vehicle are provided, the method including steps of measuring a starting gear selection parameter, and selecting a starting gear for the next coming vehicle take-off in dependence of the measured starting gear selection parameter, wherein the starting gear selection parameter is the number of vehicle take offs per time unit. Additionally the parameter can be acceleration in movement of an accelerator pedal being depressed by a driver, accelerator pedal position and clutch wear. Benefits are increased clutch endurance for a vehicle that during at least a period has to perform frequent take-offs and at the same time enhancing take-off comfort for a vehicle that during at least a period goes long-distance. | 06-16-2011 |
20110190993 | METHOD AND SYSTEM FOR CONTROLLING A VEHICLE POWERTRAIN - A method and system for controlling a powertrain in a vehicle includes steps including registering a road condition. If the registered road condition corresponds to normal road conditions then a first gear selection control algorithm is used intended for driving the vehicle in a normal mode corresponding to the conditions on an ordinary road. If the registered road condition corresponds to soft surface road conditions then a second gear selection control algorithm is used intended for driving the vehicle in a soft surface mode corresponding to the conditions on an soft surface road. In this way, a vehicle can be adapted to be provided with an AMT to work in a satisfactorily way under an increased diversity of conditions. | 08-04-2011 |
20110307151 | METHOD AND DEVICE FOR PREVENTING A SURGING OF FLUIDS IN A TANK OF A TANK TRUCK - A method and device for preventing a surging of fluids in a tank of a tank truck, during transportation, the tank truck having a drive train including an internal combustion engine, a clutch device and an automatic or automated transmission device, and the drive train is controlled by an electronic control unit (ECU), which prepared to receive input data from an arrangement for detecting a tank drive mode and sensors for sensing, a load status of the tank truck. The method includes detecting a tank drive mode, calculating a launch gear, and limiting the clutch device torque gradient. | 12-15-2011 |
20120065852 | METHOD AND DEVICE FOR CONTROLLING AN AUTOMATIC FREEWHEELING FUNCTION IN A VEHICLE - A method and device for controlling an automatic freewheeling function in a vehicle where a freewheeling function is active due to a prevailing freewheeling condition and where a control unit is programmed to:
| 03-15-2012 |
20120101698 | METHOD AND DEVICE FOR CONTROLLING A VEHICLE CRUISE CONTROL - A method and device are provided for controlling a vehicle cruise control in a vehicle, the method including registering a starting point and an end destination for a possible traveling route of the vehicle, registering a desired traveling time for the traveling route, calculating and setting limits for parameters of the cruise control in order to arrive at the end destination on the desired traveling time with as low fuel consumption as possible. | 04-26-2012 |
20120271524 | METHOD AND SYSTEM FOR CONTROLLING A VEHICLE CRUISE CONTROL - A method and cruise control system for controlling a vehicle cruise control includes driving the vehicle with the cruise control active and set to maintain a vehicle set target speed, and registering a current vehicle condition, which includes at least a current vehicle position, a currently engaged gear ratio, available gear ratios, current vehicle speed, available maximum propulsion torque and road topography of coming travelling road comprising a next coming uphill slope. Based on the current vehicle condition a downshift is predicted at a coming vehicle position in the coming uphill slope due to vehicle speed decrease and at least one activity is selected which results in that the downshift can be postponed or avoided. The cruise control is controlled according to the selected activity in order to postpone or avoid, for example a downshift from a direct gear and thereby saves fuel. | 10-25-2012 |
20120283928 | METHOD AND SYSTEM FOR CONTROLLING A VEHICLE CRUISE CONTROL - A method and cruise control system are provided and include a control unit arranged for maintaining a vehicle set target speed. The control unit is programmed to register a first parameter, which is vehicle gross weight, and a second parameter, which is current road inclination. The control unit is further programmed to, based on the registered first and second parameters, adjust as set vehicle overspeed for a brake cruise control in the cruise control to a new value. A vehicle speed increase resulting in a vehicle speed that exceeds due to delays in the cruise control and braking devices can be avoided. | 11-08-2012 |
20130030668 | METHOD AND SYSTEM FOR CONTROLLING A VEHICLE CRUISE CONTROL - A method and a vehicle cruise control system performing the steps of driving with the cruise control active and set to maintain a set target speed, registering a first position when driving in an uphill slope of a hill where vehicle retardation has decreased vehicle speed to a first speed below the set target speed and where the retardation has decreased to zero or acceleration has just started in order to increase speed to the set target speed, registering a desired speed in a second position downhill of the crest at a first distance after the crest, based on the desired speed calculating a minimum speed at the crest with which the vehicle has to pass the crest in order to be able to reach the desired speed with zero fuel consumption during the first distance, controlling speed between the first position and the crest so that the vehicle reaches the minimum speed when passing the crest. | 01-31-2013 |
20130116907 | METHOD FOR INCREASING ACTIVE DURATION TIME OF AN AUTOMATIC FREEWHEELING FUNCTION IN A VEHICLE - A method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control and during a cruise control active period is provided. The function includes an arrangement for determining a vehicle set speed (Vset speed) for when the function is allowed to be activated and means for calculating a predetermined allowable vehicle speed drop to a first under speed value (Vunderspeed) below the vehicle set speed (Vset speed). The function is controlled based on said under speed value, in order to extend active duration tune of the function. | 05-09-2013 |
20130172147 | METHOD FOR OPERATING A MULTI-CLUTCH TRANSMISSION - A method and device for operating a dual clutch transmission connectable to an internal combustion engine provided in a vehicle includes providing a control unit for managing at least the internal combustion engine and the transmission, providing a prediction model including at least one simulated shift sequence for the transmission, predicting the time between a first power upshift/downshift and a second power upshift/downshift for the transmission by using the at least one prediction model, modifying at least one parameter for operating the transmission if the predicted time between the first power upshift/downshift and the second power upshift/downshift for the transmission is shorter than a predetermined time. | 07-04-2013 |
20130211695 | METHOD AND DEVICE FOR CONTROLLING A CRUISE CONTROL GOVERNOR IN A VEHICLE - A method for controlling a cruise control operable to maintain a set speed of a vehicle according to a plurality of goal droop curves is provided. The goal droop curves include: an isochronous droop curve; a top droop curve; and a bottom droop curve. The method includes performing command according to the droop curves; registering that the vehicle soon will enter an uphill slope; estimating in a vehicle position before entering the uphill slope if a downshift in a transmission of the vehicle will occur when traveling the uphill slope during a coming time period (testimation); if the downshift is estimated to occur then performing a fuel saving action during the time period in order to avoid the downshift. The fuel saving action is one of an adaptation of transmission downshifting limits or to during the time period performing command according to a second isochronous curve. | 08-15-2013 |
20140148993 | TORQUE CALIBRATION METHOD - A method is provided for verifying an engine torque estimation and includes estimating the engine torque based on the amount of fuel injected into the engine, where the engine torque is obtained from a fuel injection table, estimating a first vehicle weight value by a calculation based on acceleration of the vehicle and the estimated engine torque, estimating an auxiliary brake torque by using an auxiliary brake table, estimating a second vehicle weight value by a calculation based on the estimated auxiliary brake torque, and comparing the first vehicle weight value with the second vehicle weight value. The method facilitates detecting if an actual engine torque value deviates from the original engine torque value of a vehicle without measuring the engine torque with a separate torque sensor. | 05-29-2014 |
20140149006 | METHOD TO CONTROL A DRIVETRAIN OF A VEHICLE - 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. | 05-29-2014 |
20140172264 | METHOD FOR INCREASING ACTIVE DURATION TIME OF AN AUTOMATIC FREEWHEELING FUNCTION IN A VEHICLE - A method for increasing active duration time of an automatic freewheeling function in a vehicle with cruise control and during a cruise control active period is provided. The function includes an arrangement for determining a vehicle set speed (Vset speed) for when the function is allowed to be activated and means for calculating a predetermined allowable vehicle speed drop to a first under speed value (Vunderspeed) below the vehicle set speed (Vset speed). The function is controlled based on said under speed value, in order to extend active duration time of the function. | 06-19-2014 |
20140200788 | ARRANGEMENT AND METHOD FOR ADAPTING A CRUISE CONTROL SYSTEM IN A VEHICLE - An arrangement for adapting a cruise control system in a vehicle includes a cruise control modifier unit connected to a cruise control system, where the cruise control modifier unit includes a position input arrangement adapted to receive actual position information from a position source, a map input arrangement adapted to receive road information from a map database for a predefined section ahead of the vehicle, where the arrangement is adapted to modify cruise control parameters for a road section within the predefined section depending on the received position and map information. Behavior of the cruise control of a vehicle can be adapted to upcoming road profile changes, which makes it possible to optimize the fuel consumption of the vehicle. | 07-17-2014 |
20140236448 | ARRANGEMENT AND METHOD FOR ADAPTING A CRUISE CONTROL SYSTEM IN A VEHICLE - A cruise control arrangement for a vehicle includes a cruise control speed function, a cruise control brake function and at least one selectable economy level, having a set maximum speed value corresponding to a maximum allowed vehicle speed, a set brake speed value corresponding to a brake cruise speed and a set cruise speed value corresponding to a cruise speed, where a temporary brake speed value replaces the set brake speed value as the actually used brake speed value, and where the temporary brake speed value is dependent on the selected economy level. The behaviour of the cruise control of a vehicle can be adapted to take account of economy, which makes it possible to optimize the fuel consumption of the vehicle. | 08-21-2014 |
20140302966 | METHOD FOR OPTIMISED LAUNCH OF A VEHICLE - A method for optimised launch of a vehicle is provided wherein a driveline of the vehicle at least includes an engine, an automatic transmission, a system for exhaust gas recirculation, which are controlled by a driveline management system, wherein the management system is able to determine the mass of the vehicle, and whereby a launching, gear of the transmission is calculated dependent at least on the determined mass of the vehicle, whereby a launching gear is chosen dependent of the power loss caused by the EGR and wherein the power loss caused by the EGR is determined, the available power to launch the vehicle is determined, and the launching gear is recalculated dependent of the available power, and selecting said recalculated launching gear before launch of the vehicle, launch the vehicle with the recalculated launching gear. | 10-09-2014 |
20140324337 | METHOD OF ENRICHMENT OF ROAD INFORMATION DATA - Road information data is enriched and a vehicle drive train is controlled on basis of this data. Based on vehicle position, data about possible routes which may be taken is collected from at least three sources (A, B, C). Data with the highest quality is chosen for controlling the drive train. When running, information about the traveled route is recorded and saved, thus providing a continuous update. | 10-30-2014 |
20150012203 | METHOD AND SYSTEM FOR CONTROLLING A DRIVING DISTANCE - A method is provided for controlling a driving distance between a host vehicle and a first vehicle driving in front of the host vehicle, the host vehicle driving at a driving speed and at the driving distance to the first vehicle. The host vehicle includes a system for controlling the driving distance and a fuel saving system, wherein the system for controlling the driving distance is adapted to retain the driving distance at not less than a preset minimum safety distance, and wherein the fuel saving system includes an automatic speed increasing function which in case of fulfillment of a set of conditions automatically increases the driving speed in order to utilise kinetic energy inherent in the host vehicle to save fuel. The method includes retrieving information that the set of conditions is fulfilled such that the activation of the automatic speed increasing function is enabled, generating an altered safety distance by altering the preset safety distance by an offset distance, and if the driving distance is less than the altered safety distance, adapting the driving speed until the altered safety distance is reached, whereafter activation of the automatic speed increasing function is allowable, and, upon the activation, resetting the preset minimum safety distance such that the offset distance is available during the activity of the speed increasing function. | 01-08-2015 |