Patents by Inventor Claes Kuylenstierna
Claes Kuylenstierna 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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Publication number: 20230347895Abstract: A method for controlling a powertrain of a vehicle, the powertrain comprising: an engine comprising mutually independently operable valves, the engine being configured to be operated in a four-stroke operation mode, and a drivetrain comprising a transmission, the method comprising: while operating the engine in the four-stroke operation mode, identifying that a critical situation applies or is expected to apply, in which a fast downshift of the transmission is required, initiating a downshift process in response to the identification of the critical situation, during at least a part of the downshift process, increasing an engine speed by controlling at least the mutually independently operable valves of the engine such that the engine is temporarily operated in a two-stroke operation mode.Type: ApplicationFiled: March 13, 2020Publication date: November 2, 2023Inventors: Anders ERIKSSON, Claes KUYLENSTIERNA
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Patent number: 11619148Abstract: The invention relates to a cylinder valve assembly (19) comprising a pneumatic valve spring arrangement (25) including a first (29) and a second (31) valve spring member defining a valve spring cavity (33), and a valve spring venting arrangement (27) comprising a first venting cavity portion (37) in fluid flow connection with the valve spring cavity (33); a second venting cavity portion (39); a movable sealing member (41) arranged to allow a pressure difference between the first venting cavity portion (37) and the second venting cavity portion (39); a feedback channel fluid flow connecting the first venting cavity portion (37) and the second venting cavity portion (39); and a venting channel (53).Type: GrantFiled: August 23, 2018Date of Patent: April 4, 2023Assignee: VOLVO TRUCK CORPORATIONInventor: Claes Kuylenstierna
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Publication number: 20230021590Abstract: An internal combustion engine, ICE, system, includes a turbocharger having a turbine and a compressor for compressing intake air and feeding the intake air to the ICE. A turbo turbine unit is disposed in an exhaust gas path downstream the turbocharger to receive exhaust gas from the turbocharger. The turbo turbine unit having a turbine wheel, a bearing housing defining an inside volume for containing lubrication oil, and a sealing arrangement positioned in the vicinity of the turbine wheel for preventing lubrication oil from escaping from the inside volume of the bearing housing to an exhaust duct of the turbo turbine unit. A buffer air conduit extends between a selected position at the compressor and a buffer air inlet of the turbo turbine unit.Type: ApplicationFiled: July 19, 2022Publication date: January 26, 2023Applicant: VOLVO TRUCK CORPORATIONInventors: Claes KUYLENSTIERNA, Pontus ERIKSSON
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Publication number: 20230011920Abstract: A method for diagnosing a part of a powertrain system is provided. The powertrain system comprising an internal combustion engine system having an internal combustion engine provided with a plurality of cylinders, each cylinder being provided with an air inlet valve and an exhaust gas valve, the method comprising the steps of operating any one of the inlet valve and the exhaust valve for any one of the cylinders to adjust the frequency and/or duration of air pulses during different load conditions of the internal combustion engine; determining an operational behaviour of the part of the powertrain system in response to the adjusted frequency and/or duration of the air pulses; and comparing the determined operational behaviour of the part of the powertrain system with an expected behaviour of the part of the powertrain system.Type: ApplicationFiled: December 20, 2019Publication date: January 12, 2023Applicant: VOLVO TRUCK CORPORATIONInventors: Johan LINDBERG, Esteban GELSO, Claes KUYLENSTIERNA
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Publication number: 20210310383Abstract: The invention relates to a cylinder valve assembly (19) comprising a pneumatic valve spring arrangement (25) including a first (29) and a second (31) valve spring member defining a valve spring cavity (33), and a valve spring venting arrangement (27) comprising a first venting cavity portion (37) in fluid flow connection with the valve spring cavity (33); a second venting cavity portion (39); a movable sealing member (41) arranged to allow a pressure difference between the first venting cavity portion (37) and the second venting cavity portion (39); a feedback channel fluid flow connecting the first venting cavity portion (37) and the second venting cavity portion (39); and a venting channel (53).Type: ApplicationFiled: August 23, 2018Publication date: October 7, 2021Applicant: VOLVO TRUCK CORPORATIONInventor: Claes KUYLENSTIERNA
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Patent number: 11125124Abstract: The invention relates to a system (100) for operating a valve of an internal combustion engine (10), said system comprising a primary fluid circuit (60) configured to define a fluid passageway for circulating a compressible fluid medium there through being operatively connectable to an actuator (92) of an actuated flow control valve (90, 95) of said internal combustion engine, thereby capable of delivering a valve opening force.Type: GrantFiled: January 18, 2019Date of Patent: September 21, 2021Assignee: VOLVO TRUCK CORPORATIONInventors: Staffan Lundgren, David Carlson, Claes Kuylenstierna
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Publication number: 20200347757Abstract: The invention relates to a system (100) for operating a valve of an internal combustion engine (10), said system comprising a primary fluid circuit (60) configured to define a fluid passageway for circulating a compressible fluid medium there through being operatively connectable to an actuator (92) of an actuated flow control valve (90, 95) of said internal combustion engine, thereby capable of delivering a valve opening force.Type: ApplicationFiled: January 18, 2019Publication date: November 5, 2020Applicant: VOLVO TRUCK CORPORATIONInventors: Staffan LUNDGREN, David CARLSON, Claes KUYLENSTIERNA
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Patent number: 10364784Abstract: A fuel injector arrangement for supplying fuel into a cylinder of an internal combustion engine. The fuel injector arrangement includes a fuel injector and a sealing ring which is arranged around the circumference of the fuel injector. The sealing ring is located between a fuel inlet and/or outlet of the fuel injector located nearest to an injector tip of the fuel injector and the injector tip, wherein the sealing ring has an asymmetrical cross section with a narrow end extending towards the injector tip and a wider end extending away from the injector tip. The wider end has a recess therein creating two legs with a space there between.Type: GrantFiled: April 11, 2014Date of Patent: July 30, 2019Assignee: Volvo Truck CorporationInventors: Claes Kuylenstierna, Thomas Svanberg
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Publication number: 20170145973Abstract: A fuel injector arrangement for supplying fuel into a cylinder of an internal combustion engine. The fuel injector arrangement includes a fuel injector and a sealing ring which is arranged around the circumference of the fuel injector. The sealing ring is located between a fuel inlet and/or outlet of the fuel injector located nearest to an injector tip of the fuel injector and the injector tip, wherein the sealing ring has an asymmetrical cross section with a narrow end extending towards the injector tip and a wider end extending away from the injector tip. The wider end has a recess therein creating two legs with a space there between.Type: ApplicationFiled: April 11, 2014Publication date: May 25, 2017Applicant: VOLVO TRUCK CORPORATIONInventors: Claes KUYLENSTIERNA, Thomas SVANBERG
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Patent number: 6821447Abstract: A method of surface treatment of friction members includes providing a friction member made of PMMC material. A transfer layer is formed on the active surface of the friction member of removing the top layer of the matrix material to expose a surface with the embedded reinforcing particles.Type: GrantFiled: October 31, 2002Date of Patent: November 23, 2004Assignees: Norsk Hydro ASA, Volvo Car CorporationInventors: Torkil Storstein, Claes Kuylenstierna, Jouko Kalmi
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Patent number: 6143051Abstract: A friction material comprising a sintered mass of iron in which graphite particles are dispersed, which sintered mass is formed from between 13 and 22 vol. % of iron fibers, between 13 and 22 vol. % of iron particles having a particle size of 10-400 .mu.m, between 40 and 70 vol. % of graphite particles having a particle size of 25-3000 .mu.m, and between 10 and 15 vol. % of a metallic binder having a melting point of 800-1140.degree. C., and a method of preparing such a friction material, wherein a mixture of these components is compressed at a pressure of at least 100 MPa so as to form a compact having a desired form and size, and where the compact thus formed is sintered at a temperature between 800 and 1140.degree. C. for a period of time which is sufficiently long for achieving concretion of iron fibers, iron particles and metallic binder.Type: GrantFiled: May 20, 1999Date of Patent: November 7, 2000Assignees: A/S Roulunds Fabriker, Volvo Truck CorporationInventors: Ole Kr.ae butted.mer, Niels Brams.o slashed., Erik Simonsen, Noel De Leon, Knud Strande, Rolf Tornberg, Claes Kuylenstierna