Patents by Inventor Johan Bjernetun
Johan Bjernetun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11933630Abstract: A control arrangement for a vehicle, specifically adapted for use and creation of map data for improved operation of the vehicle. A corresponding method and computer program product is also provided.Type: GrantFiled: June 26, 2017Date of Patent: March 19, 2024Assignee: VOLVO TRUCK CORPORATIONInventor: Johan Bjernetun
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Publication number: 20230273787Abstract: A computer-implemented method for scheduling a vehicle software update in a vehicle, for example, in heavy-duty vehicle which may be operating in a defined area or site, and/or along a defined trajectory, the method comprising associating a probability of the vehicle having an updateable operational state with one or more time periods, wherein the probability of the vehicle being updateable is determined based at least partly on data representing behavioural states of one or more similar vehicles, in other words, other vehicles which have usage characteristics which have a relationship to the usage characteristics of the vehicle; scheduling a pending software update until the next time period of the one or more time periods where the probability of the vehicle having an updateable operational states meets a software update condition; and, enabling the vehicle to perform the software update when the vehicle probability having the updateable operational state meets the software update condition.Type: ApplicationFiled: February 23, 2023Publication date: August 31, 2023Applicant: VOLVO TRUCK CORPORATIONInventors: Martin WILHELMSSON, Johan BJERNETUN, Tobias SMIDEBRANT, Linus NORDHOLM
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Publication number: 20230020541Abstract: A method for thermal conditioning at least one thermal buffer of a thermal system of a vehicle, the thermal system being a rechargeable energy storage system, RESS, and/or an energy transformation system comprising fuel cells, the thermal buffer having an operating window defined by the preferred operating temperature of the thermal buffer. The method includes providing predictive power utilization of the thermal buffer as a function of time, conditioning the thermal buffer in response to the predictive power utilization, such that the thermal buffer is thermally conditioned to be within the operating window of the thermal buffer. The operating window is varying as a function of the predictive power utilization over time.Type: ApplicationFiled: July 15, 2022Publication date: January 19, 2023Applicant: VOLVO TRUCK CORPORATIONInventors: Linus NORDHOLM, Jens SAMSIOE, Anders MAGNUSSON, Johan BJERNETUN, Johan LINDBERG, Leo LAINE
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Publication number: 20200182628Abstract: A control arrangement for a vehicle, specifically adapted for use and creation of map data for improved operation of the vehicle. A corresponding method and computer program product is also provided.Type: ApplicationFiled: June 26, 2017Publication date: June 11, 2020Inventor: Johan BJERNETUN
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Patent number: 10648557Abstract: A method for automatic calibration of a position detection sensor of an automatic transmission including a gearshift actuator, the method including registering, using the position detection sensor, the position of the gearshift actuator upon power-up of the transmission; and performing a calibration of the position detection sensor if the registered position of the gearshift actuator is outside a predetermined expected position range of the gearshift actuator or within a predetermined abnormal position range of the gearshift actuator.Type: GrantFiled: March 3, 2019Date of Patent: May 12, 2020Assignee: VOLVO TRUCK CORPORATIONInventors: Lars Karlsson, Johan Bjernetun
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Patent number: 10640119Abstract: A method to control a powertrain in a vehicle during an acceleration is provided, the powertrain including a propulsion unit, a multi-clutch transmission drivingly connected to the propulsion unit, and a control unit for controlling at least the powertrain components, which control unit is provided with a prediction model including at least one simulated shift sequence for the multi-clutch transmission. The method involves monitoring at least one operating parameter of the powertrain; estimating the time (tE) between initiation of a first power upshift and initiation of a sequential second power upshift using the prediction model; and, if the estimated time is shorter than a predetermined time limit (tLIM), controlling the propulsion unit to limit the vehicle acceleration so that the time between the first and second power upshifts is increased to be at least equal to the predetermined time limit (tLIM).Type: GrantFiled: October 9, 2014Date of Patent: May 5, 2020Assignee: VOLVO TRUCK CORPORATIONInventors: Lars Karlsson, Johan Bjernetun, Anders Eriksson
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Patent number: 10377384Abstract: A method is provided for controlling a drivetrain of a vehicle, wherein the drivetrain comprises a multi-clutch transmission. The gear shift of the multi-clutch transmission is adapted to be performed either by power cut shift or by power shift dependent on predetermined vehicle shift conditions. The method includes detecting at least one of a plurality of indications of slippery road conditions and setting a slip risk factor, wherein the slip risk factor is dependent on the indication of slippery road conditions. If the slip risk factor is above a first predetermined threshold value the method further comprises controlling the multi-clutch transmission such that an upcoming gear shift is performed as a power-shift independently of if upcoming shift was determined to be performed as a power-cut shift or as a power shift.Type: GrantFiled: September 5, 2014Date of Patent: August 13, 2019Assignee: Volvo Truck CorporationInventors: Lars Karlsson, Johan Bjernetun
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Publication number: 20190195356Abstract: A method for automatic calibration of a position detection sensor of an automatic transmission including a gearshift actuator, the method including registering, using the position detection sensor, the position of the gearshift actuator upon power-up of the transmission; and performing a calibration of the position detection sensor if the registered position of the gearshift actuator is outside a predetermined expected position range of the gearshift actuator or within a predetermined abnormal position range of the gearshift actuator.Type: ApplicationFiled: March 3, 2019Publication date: June 27, 2019Applicant: VOLVO TRUCK CORPORATIONInventors: Lars Karlsson, Johan BJERNETUN
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Patent number: 10288170Abstract: A method for automatic calibration of a position detection sensor of an automatic transmission including a gearshift actuator, the method including registering, using the position detection sensor, the position of the gearshift actuator upon power-up of the transmission; and performing a calibration of the position detection sensor if the registered position of the gearshift actuator is outside a predetermined expected position range of the gearshift actuator or within a predetermined abnormal position range of the gearshift actuator.Type: GrantFiled: August 14, 2013Date of Patent: May 14, 2019Assignee: Volvo Truck CorporationInventors: Lars Karlsson, Johan Bjernetun
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Patent number: 10077049Abstract: A method is provided for adapting the starting gear of an automated manual transmission in a heavy vehicle, where a pre-selected starting gear is selected by a transmission control unit depending on vehicle parameters of the heavy vehicle, where the starting gear is lowered from the pre-selected starting gear depending on a movement behavior of a vehicle in front of the heavy vehicle. The pre-selected starting gear can be adapted to the traffic in front of the vehicle, which makes it possible to avoid unnecessary gear changes and which allows for a smooth starting cycle of the vehicle.Type: GrantFiled: October 2, 2013Date of Patent: September 18, 2018Assignee: Volvo Truck CorporationInventors: Johan Bjernetun, Anders Eriksson
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Patent number: 10046765Abstract: A method is provided to control an engine braking operation of a vehicle provided with a dual clutch transmission. The dual clutch transmission is adapted to be set into different gear-combinations, each including an active gear selection through which torque can be transmitted, and a passive gear selection through which no torque can be transmitted. In a pre-set number of gear-combinations, the first input shaft and the main shaft have a synchronised rotation. When an engine braking operation is performed when the transmission is set in one of the pre-set number of gear-combinations modifying said engine braking operation such that a damaging load upon said spigot bearing is reduced.Type: GrantFiled: November 19, 2013Date of Patent: August 14, 2018Assignee: Volvo Truck CorporationInventors: Klas Bergström, Lars Karlsson, Johan Bjernetun, Lennart Brusved
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Patent number: 10018233Abstract: A method for automatic detection of need for clutch calibration includes registering and storing in a data memory, before or in connection with engine shut down, a value of a clutch operating parameter, registering a corresponding value of the clutch operating parameter in connection with subsequent engine start up, and determining need for clutch calibration if the difference between the stored value of the clutch operating parameter and the corresponding value of the clutch operating parameter exceeds a predetermined threshold value.Type: GrantFiled: June 27, 2013Date of Patent: July 10, 2018Assignee: Volvo Truck CorporationInventors: Lars Karlsson, Johan Bjernetun
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Publication number: 20170305431Abstract: A method to control a powertrain in a vehicle during an acceleration is provided, the powertrain including a propulsion unit, a multi-clutch transmission drivingly connected to the propulsion unit, and a control unit for controlling at least the powertrain components, which control unit is provided with a prediction model including at least one simulated shift sequence for the multi-clutch transmission. The method involves monitoring at least one operating parameter of the powertrain; estimating the time (tE) between initiation of a first power upshift and initiation of a sequential second power upshift using the prediction model; and, if the estimated time is shorter than a predetermined time limit (tLIM), controlling the propulsion unit to limit the vehicle acceleration so that the time between the first and second power upshifts is increased to be at least equal to the predetermined time limit (tLIM).Type: ApplicationFiled: October 9, 2014Publication date: October 26, 2017Applicant: VOLVO TRUCK CORPORATIONInventors: Lars KARLSSON, Johan BJERNETUN, Anders ERIKSSON
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Publication number: 20170232971Abstract: A method is provided for controlling a drivetrain of a vehicle, wherein the drivetrain comprises a multi-clutch transmission. The gear shift of the multi-clutch transmission is adapted to be performed either by power cut shift or by power shift dependent on predetermined vehicle shift conditions. The method includes detecting at least one of a plurality of indications of slippery road conditions and setting a slip risk factor, wherein the slip risk factor is dependent on the indication of slippery road conditions. If the slip risk factor is above a first predetermined threshold value the method further comprises controlling the multi-clutch transmission such that an upcoming gear shift is performed as a power-shift independently of if upcoming shift was determined to be performed as a power-cut shift or as a power shift.Type: ApplicationFiled: September 5, 2014Publication date: August 17, 2017Applicant: VOLVO TRUCK CORPORATIONInventors: Lars KARLSSON, Johan BJERNETUN
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Patent number: 9643610Abstract: A method is provided for controlling an automatic transmission unit including at least a transmission with different selectable gear ratios and a clutch and being associated with a propulsion unit for a vehicle. The method includes operating the vehicle at a prevailing vehicle speed (v) in a downslope with the automatic transmission unit in a neutral gear or disengaged from the propulsion unit; operating the propulsion unit in an idle mode of operation; controlling the automatic transmission unit so as to select a gear which is a relatively low gear with regard to the prevailing vehicle speed (v), while maintaining the automatic transmission unit in a neutral gear or disengaged from the propulsion unit; and engaging the clutch to be slipping between the propulsion unit and the automatic transmission unit in order to adapt the rotational speed of the propulsion unit to the gear ratio of the relatively low gear.Type: GrantFiled: April 10, 2015Date of Patent: May 9, 2017Assignee: Volvo Truck CorporationInventors: Johan Bjernetun, Henrik Ryberg
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Publication number: 20160297446Abstract: A method is provided to control an engine braking operation of a vehicle provided with a dual clutch transmission. The dual clutch transmission is adapted to be set into different gear-combinations, each including an active gear selection through which torque can be transmitted, and a passive gear selection through which no torque can be transmitted. In a pre-set number of gear-combinations, the first input shaft and the main shaft have a synchronised rotation. When an engine braking operation is performed when the transmission is set in one of the pre-set number of gear-combinations modifying said engine braking operation such that a damaging load upon said spigot bearing is reduced.Type: ApplicationFiled: November 19, 2013Publication date: October 13, 2016Inventors: Klas BERGSTRÖM, Lars KARLSSON, Johan BJERNETUN, Lennart BRUSVED
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Publication number: 20160297445Abstract: A method is provided for controlling an automatic transmission unit including at least a transmission with different selectable gear ratios and a clutch and being associated with a propulsion unit for a vehicle. The method includes operating the vehicle at a prevailing vehicle speed (v) in a downslope with the automatic transmission unit in a neutral gear or disengaged from the propulsion unit; operating the propulsion unit in an idle mode of operation; controlling the automatic transmission unit so as to select a gear which is a relatively low gear with regard to the prevailing vehicle speed (v), while maintaining the automatic transmission unit in a neutral gear or disengaged from the propulsion unit; and engaging the clutch to be slipping between the propulsion unit and the automatic transmission unit in order to adapt the rotational speed of the propulsion unit to the gear ratio of the relatively low gear.Type: ApplicationFiled: April 10, 2015Publication date: October 13, 2016Applicant: Volvo Truck CorporationInventors: Johan BJERNETUN, Henrik RYBERG
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Publication number: 20160229400Abstract: A method is provided for adapting the starting gear of an automated manual transmission in a heavy vehicle, where a pre-selected starting gear is selected by a transmission control unit depending on vehicle parameters of the heavy vehicle, where the starting gear is lowered from the pre-selected starting gear depending on a movement behaviour of a vehicle in front of the heavy vehicle. The pre-selected starting gear can be adapted to the traffic in front of the vehicle, which makes it possible to avoid unnecessary gear changes and which allows for a smooth starting cycle of the vehicle.Type: ApplicationFiled: October 2, 2013Publication date: August 11, 2016Applicant: VOLVO TRUCK CORPORATIONInventors: Johan BJERNETUN, Anders ERIKSSON
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Publication number: 20160160943Abstract: A method for automatic detection of need for clutch calibration includes registering and storing in a data memory, before or in connection with engine shut down, a value of a clutch operating parameter, registering a corresponding value of the clutch operating parameter in connection with subsequent engine start up, and determining need for clutch calibration if the difference between the stored value of the clutch operating parameter and the corresponding value of the clutch operating parameter exceeds a predetermined threshold value.Type: ApplicationFiled: June 27, 2013Publication date: June 9, 2016Applicant: VOLVO TRUCK CORPORATIONInventors: Lars KARLSSON, Johan BJERNETUN
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Publication number: 20160153553Abstract: A method for automatic calibration of a position detection sensor of an automatic transmission including a gearshift actuator, the method including registering, using the position detection sensor, the position of the gearshift actuator upon power-up of the transmission; and performing a calibration of the position detection sensor if the registered position of the gearshift actuator is outside a predetermined expected position range of the gearshift actuator or within a predetermined abnormal position range of the gearshift actuator.Type: ApplicationFiled: August 14, 2013Publication date: June 2, 2016Applicant: VOLVO TRUCK CORPORATIONInventors: Lars KARLSSON, Johan BJERNETUN