Patents by Inventor Lena Larsson
Lena Larsson 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: 9272703Abstract: A vehicle traction system includes a first traction wheel forming part of a first propulsion system including a mechanical drive train, a second traction wheel forming part of a second propulsion system including a hydraulic pump for powering a hydraulic motor, one sensor indicating a take-off condition, and a control unit for controlling the second propulsion unit. The control unit is programmed to automatically detect a take-off condition by the sensor and send an input to the control unit that a take-off condition is fulfilled, automatically provide a traction force from the second propulsion system in response to the indication that there is a take-off condition of the vehicle present and an indication that a traction is or will be provided by the first traction system, and automatically control the second propulsion unit by the control unit in dependence of the manually controlled torque from the first propulsion unit.Type: GrantFiled: March 9, 2012Date of Patent: March 1, 2016Assignee: Volvo Lastvagnar ABInventors: Lena Larsson, Jan Öberg, Filip Alm
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Publication number: 20150283892Abstract: A heavy road vehicle provided with a hybrid propulsion system includes a mechanical propulsion system and a hydraulic propulsion system. The mechanical propulsion system is connected to at least one traction wheel which is powered by an internal combustion engine via a mechanical drive train and a gearbox. The hydraulic propulsion system is connected to at least one other traction wheel including a hydraulic motor powered by a hydraulic pump unit. The hybrid propulsion unit further includes a control unit for at least controlling the hybrid propulsion unit, optionally also controlling the mechanical propulsion system. The hydraulic propulsion system further includes a pressure accumulator which is connected to the hydraulic motor in order to maintain a pressure in the hydraulic motor even if the hydraulic pump unit is switched off.Type: ApplicationFiled: November 9, 2012Publication date: October 8, 2015Applicant: VOLVO TRUCK CORPORATIONInventors: Lena Larsson, Alfred Johansson
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Patent number: 9096213Abstract: A system and a method for operating an engine of a vehicle are provided wherein a transmission coupled to the engine has a freewheeling mode. The engine is switched off by setting the transmission into the freewheeling mode and interrupting fuel supply to the engine in the freewheeling mode depending on one or more operating conditions of the vehicle. A gear in the transmission is selected proactively depending on one or more operating actions of the vehicle anticipated to be required on or within a predefined time limit after restart of the engine.Type: GrantFiled: April 5, 2011Date of Patent: August 4, 2015Assignee: Volvo Lastvagnar ABInventors: Lena Larsson, Anders Eriksson, Jan Öberg
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Publication number: 20150105992Abstract: A vehicle traction system includes a first traction wheel forming part of a first propulsion system including a mechanical drive train, a second traction wheel forming part of a second propulsion system including a hydraulic pump for powering a hydraulic motor, one sensor indicating a take-off condition, and a control unit for controlling the second propulsion unit. The control unit is programmed to automatically detect a take-off condition by the sensor and send an input to the control unit that a take-off condition is fulfilled, automatically provide a traction force from the second propulsion system in response to the indication that there is a take-off condition of the vehicle present and an indication that a traction is or will be provided by the first traction system, and automatically control the second propulsion unit by the control unit in dependence of the manually controlled torque from the first propulsion unit.Type: ApplicationFiled: March 9, 2012Publication date: April 16, 2015Applicant: VOLVO LASTVAGNAR ABInventors: Lena Larsson, Jan Öberg, Filip Alm
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Publication number: 20150081190Abstract: In a method for controlling a traction system for a heavy road vehicle, the system includes a first mechanical propulsion system, a second hydraulic propulsion system, and a control unit. The method includes measuring a first parameter value, indicative of the rolling radius of a first traction wheel, measuring a second parameter value, indicative of the rolling radius of a second traction wheel, and the control unit using the first and second parameter values for determining a present relation between the rolling radii of the first and second traction wheels. The control unit provides an output signal based on the present relation to optimize the traction applied to the second traction wheel. A traction system and a heavy vehicle incorporating a traction system are also provided.Type: ApplicationFiled: May 8, 2012Publication date: March 19, 2015Applicant: VOLVO LASTVAGNAR ABInventors: Lena Larsson, Jan Öberg, Filip Alm
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Publication number: 20140324305Abstract: A system and a method for operating an engine of a vehicle are provided wherein a transmission coupled to the engine has a freewheeling mode. The engine is switched off by setting the transmission into the freewheeling mode and interrupting fuel supply to the engine in the freewheeling mode depending on one or more operating conditions of the vehicle. A gear in the transmission is selected proactively depending on one or more operating actions of the vehicle anticipated to be required on or within a predefined time limit after restart of the engine.Type: ApplicationFiled: April 5, 2011Publication date: October 30, 2014Applicant: VOLVO LASTVAGNAR ABInventor: Lena Larsson
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Patent number: 8863885Abstract: A wheel hub unit includes a wheel hub, a hydraulic motor and at least one bearing for supporting the wheel hub and the hydraulic motor. The wheel hub unit comprises a first seal for protecting the at least one bearing from hydraulic oil from the hydraulic motor.Type: GrantFiled: October 2, 2009Date of Patent: October 21, 2014Assignee: Volvo Lastvagnar ABInventors: Ingemar Dagh, Martin Sjöholm, Lena Larsson
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Patent number: 8684379Abstract: A cast steering knuckle for a vehicle such as a truck includes a knuckle body. One or more pipes, each including a pipe body, are molded into the knuckle body providing a duct for a fluid and/or one or more electrical harnesses.Type: GrantFiled: December 17, 2008Date of Patent: April 1, 2014Assignee: Volvo Lastvagnar ABInventors: Leon Fuks, Lena Larsson, Ingemar Dagh
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Publication number: 20130264136Abstract: A wheel-steered vehicle includes a frame and steerable wheels on at least one front axle, wherein the frame includes a front frame section including the at least one front axle and a rear frame section including at least one rear axle, the front and rear frame sections being arranged along a longitudinal direction and being connected by at least a first pivot joint wherein the at least first pivot joint has a first pivot axis oriented in the longitudinal direction, and wherein the wheels on the at least one front axle include a separate drive unit for each steerable wheel on the at least one front axle.Type: ApplicationFiled: December 17, 2010Publication date: October 10, 2013Applicant: Volvo Lastvagnar ABInventors: Lena Larsson, Jan Öberg
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Publication number: 20130264137Abstract: A frame-steered vehicle includes a front frame section including at least one front axle and a rear frame section including at least one rear axle. The front and rear frame sections are arranged along a longitudinal axis and are connected by at least a first pivot joint. The at least first pivot joint has a first pivot axis oriented transversal with respect to the longitudinal direction. The at least one front axle includes driven wheels and at least the at least one rear axle is suspended by a truck-type suspension.Type: ApplicationFiled: December 17, 2010Publication date: October 10, 2013Applicant: Volvo Lastvagnar ABInventors: Lena Larsson, Jan Öberg
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Publication number: 20130193659Abstract: A cast steering knuckle for a vehicle such as a truck includes a knuckle body. One or more pipes, each including a pipe body, are moulded into the knuckle body providing a duct for a fluid and/or one or more electrical harnesses.Type: ApplicationFiled: December 17, 2008Publication date: August 1, 2013Applicant: Volvo Lastvagnar ABInventors: Leon Fuks, Lena Larsson, Ingemar Dagh
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Publication number: 20120187747Abstract: A wheel hub unit includes a wheel hub, a hydraulic motor and at least one bearing for supporting the wheel hub and the hydraulic motor. The wheel hub unit comprises a first seal for protecting the at least one bearing from hydraulic oil from the hydraulic motor.Type: ApplicationFiled: April 2, 2009Publication date: July 26, 2012Applicant: VOLVO LASTVAGNAR ABInventors: Ingemar Dagh, Martin Sjöholm, Lena Larsson
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Patent number: 7954576Abstract: A vehicle includes a front axle and rear axle, where at least one of said axles is driven, an engine arranged in the vicinity of the rear or front end of said vehicle, the engine including an output shaft connected to the driven axle via a transmission system for transmitting driving power from the engine to the driven axle. The transmission system includes at least a multiple-speed gearbox for causing variable gear ratio between the engine and driven axle. The engine and at least a part of the gearbox are arranged on each side of the driven axle, and are connected only via a power transmitting device so that an engine block of the engine is separated from a gearbox housing of the gearbox.Type: GrantFiled: June 15, 2005Date of Patent: June 7, 2011Assignee: Volvo Lastvagnar ABInventors: Lars Bråthe, Anders Hedman, Hans Stervik, Lena Larsson
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Publication number: 20100156082Abstract: A method for manufacturing at least one frame member for use as a support element in a vehicle frame includes providing a tubular element. According to the method, a pressure is applied in the interior of the tubular element while the tubular element is positioned at least partly inside a mould, thereby causing the tubular element to conform to the internal shape of said mould so as to change the longitudinal extension direction and/or cross-section of the tubular element in at least one position along the tubular element. A frame member is also provided.Type: ApplicationFiled: April 24, 2008Publication date: June 24, 2010Applicant: VOLVO LASTVAGNAR ABInventors: Hans Adlersson, Lena Larsson
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Publication number: 20100063702Abstract: In a system and a method of stabilizing a vehicle combination of a towing vehicle and a trailer or a semi-trailer, wherein a trailer brake system on the trailer or semi-trailer which may be operated together with the a vehicle brake system on the towing vehicle as well as independent from said vehicle brake system, the system and method includes: detecting at least one signal corresponding to at least one driving condition; computing the detected at least one signal corresponding to said at least one driving condition and comparing the at least one detected signal with a corresponding predetermined values representing a critical driving condition; allowing independent operation of the trailer brake system in response to a detected critical driving condition; and automatically operating the trailer brake system in response to the activation means by applying temporary braking actions on the trailer. Hereby, a proactive stabilising trailer brake system, also known as stretch-braking, is provided.Type: ApplicationFiled: July 6, 2006Publication date: March 11, 2010Applicant: VOLVO LASTVAGNAR ABInventors: Mats Sabelström, Lena Larsson
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Patent number: 7464955Abstract: Method and arrangement including a vehicle having a first and a second vehicle section connected to an articulation that allows rotation about a vehicle longitudinal axis of the vehicle. A positioning arrangement is included that has at least one adjusting device in which the positioning arrangement includes operation by at least one adjusting device in order to rotate the first and second vehicle sections into a predefined basic position in relation to one another.Type: GrantFiled: December 17, 2003Date of Patent: December 16, 2008Assignee: Volvo Construction Equipment ABInventors: Jörgen Ahlberg, Ivar Aaboen, Rickard Nilsson, Lena Larsson
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Publication number: 20080245585Abstract: A vehicle includes a front axle and rear axle, where at least one of said axles is driven, an engine arranged in the vicinity of the rear or front end of said vehicle, the engine including an output shaft connected to the driven axle via a transmission system for transmitting driving power from the engine to the driven axle. The transmission system includes at least a multiple-speed gearbox for causing variable gear ratio between the engine and driven axle. The engine and at least a part of the gearbox are arranged on each side of the driven axle, and are connected only via a power transmitting device so that an engine block of the engine is separated from a gearbox housing of the gearbox.Type: ApplicationFiled: June 15, 2005Publication date: October 9, 2008Applicant: VOLVO LASTVAGNAR ABInventors: Lars Brathe, Anders Hedman, Hans Stervik, Lena Larsson
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Publication number: 20040212174Abstract: Method and arrangement including a vehicle having a first and a second vehicle section connected to an articulation that allows rotation about a vehicle longitudinal axis of the vehicle. A positioning arrangement is included that has at least one adjusting device in which the positioning arrangement includes operation by at least one adjusting device in order to rotate the first and second vehicle sections into a predefined basic position in relation to one another.Type: ApplicationFiled: December 17, 2003Publication date: October 28, 2004Applicant: VOLVO ARTICULATED HAULERS ABInventors: Jorgen Ahlberg, Ivar Aaboen, Rickard Nilsson, Lena Larsson
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Patent number: 4667538Abstract: A range gearbox of planetary type designed to be joined to a vehicle gearbox, a so-called basic gearbox. The ring gear of the planetary gear set is non-rotatably jointed to an engaging sleeve by which the ring gear can be locked to an engaging ring fixed to the rear end wall of the gearbox, or to an engaging ring joined to the planetary gear carrier. The engaging sleeve serves as a ring gear carrier displacing the ring gear axially when shifting range modes.Type: GrantFiled: November 28, 1984Date of Patent: May 26, 1987Assignee: AB VolvoInventor: Lena Larsson
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Patent number: RE33428Abstract: A range gearbox of planetary type designed to be joined to a vehicle gearbox, a so-called basic gearbox. The ring gear of the planetary gear set is non-rotatably jointed to an engaging sleeve by which the ring gear can be locked to an engaging ring fixed to the rear end wall of the gearbox, or to an engaging ring joined to the planetary gear carrier. The engaging sleeve serves as a ring gear carrier displacing the ring gear axially when shifting range modes.Type: GrantFiled: November 24, 1989Date of Patent: November 6, 1990Assignee: AB VolvoInventor: Lena Larsson