Patents by Inventor Volker Gniesmer
Volker Gniesmer 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: 11320007Abstract: A method is disclosed for monitoring the functions of a friction clutch which is arranged in a vehicle between a drive motor and a compressor of a compressed air supply system and which can be disengaged and engaged pneumatically. In a delivery mode of the compressor, at least one operating parameter is detected by sensor and evaluated in an electronic control unit. When a slipping condition of the friction clutch is identified, a value for a cut-off pressure of the compressor stored in the electronic control unit is reduced. When a slipping condition has been identified, the delivery mode of the compressor is ended by disengagement of the friction clutch, and a warning signal and/or warning information is outputted.Type: GrantFiled: February 19, 2019Date of Patent: May 3, 2022Assignee: ZF CV SYSTEMS HANNOVER GMBHInventors: Stefan Brinkmann, Dirk Hillbring, Konrad Feyerabend, Volker Gniesmer, Ralf Stoffels
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Publication number: 20210381560Abstract: A method is disclosed for monitoring the functions of a friction clutch which is arranged in a vehicle between a drive motor and a compressor of a compressed air supply system and which can be disengaged and engaged pneumatically. In a delivery mode of the compressor, at least one operating parameter is detected by sensor and evaluated in an electronic control unit. When a slipping condition of the friction clutch is identified, a value for a cut-off pressure of the compressor stored in the electronic control unit is reduced. When a slipping condition has been identified, the delivery mode of the compressor is ended by disengagement of the friction clutch, and a warning signal and/or warning information is outputted.Type: ApplicationFiled: February 19, 2019Publication date: December 9, 2021Inventors: Stefan BRINKMANN, Dirk HILLBRING, Konrad FEYERABEND, Volker GNIESMER, Ralf STOFFELS
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Patent number: 10359000Abstract: A cylinder of an internal combustion engine, in which cylinder liner an oscillating piston is guided on a running surface wherein the cylinder line is fixed vertically by means of a collar between a cylinder housing and a cylinder head. The wet cylinder includes an outer side which deviates from a circular shape and/or a rotationally asymmetrical outer contour of the collar. The cylinder liner is fitted in a positionally oriented manner in a corresponding receptable of the cylinder housing.Type: GrantFiled: September 20, 2017Date of Patent: July 23, 2019Assignee: KS Kolbenschmidt GmbHInventor: Volker Gniesmer
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Patent number: 10066579Abstract: A cooling channel piston for an internal combustion engine which includes a piston bottom and a piston shaft that are joined thereto of a friction welding process. The piston bottom and the piston shaft jointly form a cooling channel. An annular wall which radially delimits the cooling channel towards the outside is formed by the piston bottom and/or the piston shaft. The annular wall can be sealed by a welding process once the piston bottom and the piston shaft have been joined together.Type: GrantFiled: July 9, 2015Date of Patent: September 4, 2018Inventors: Volker Gniesmer, Gerhard Luz, Jochem Müller, Christian Schaller
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Publication number: 20180010549Abstract: A cylinder of an internal combustion engine, in which cylinder liner an oscillating piston is guided on a running surface wherein the cylinder line is fixed vertically by means of a collar between a cylinder housing and a cylinder head. The wet cylinder includes an outer side which deviates from a circular shape and/or a rotationally asymmetrical outer contour of the collar. The cylinder liner is fitted in a positionally oriented manner in a corresponding receptable of the cylinder housing.Type: ApplicationFiled: September 20, 2017Publication date: January 11, 2018Inventor: Volker Gniesmer
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Publication number: 20170173665Abstract: A method for producing a cooling channel system for an internal combustion engine, which has a cooling channel in the piston crown. The piston crown is adjoined by a lower piston part having a piston boss, pin bores and piston skirts. Firstly, a piston blank having a peripheral collar projecting radially in the region of the piston crown is produced, wherein the collar, forming a subsequent ring zone wall is then reshaped and, in a transition area between the piston crown and the lower piston part, a contact area for the collar is formed, and the collar is reshaped in such a way until the outer radially peripheral edge comes very close to or completely into contact with the contact area in order to form a closed cooling channel. Following the reshaping, the end region of the ring zone wall forms a defined gap (X) with respect to the upper edge of the piston skirt.Type: ApplicationFiled: March 6, 2017Publication date: June 22, 2017Inventor: Volker Gniesmer
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Patent number: 9605758Abstract: A stroke piston for a stroke piston compressor for generating compressed air for a vehicle, such as a commercial vehicle, includes a piston body with a piston floor, a piston skirt with piston skirt walls and pin hubs for receiving a piston pin, and at least two piston rings, which can be inserted into circumferential ring grooves of the piston body. Ridges of the piston body are provided between each two ring grooves and between the piston floor and the first ring groove arranged closest to the piston floor and the ring groove arranged closest to the piston skirt facing away from the other ring groove or grooves. At least one of the ridges is recessed at least over a partial section of its ridge height, which is measured parallel to the axis of the piston body, with at least one recess relative to the diameter of the piston body.Type: GrantFiled: July 7, 2012Date of Patent: March 28, 2017Assignee: WABCO GmbHInventors: Volker Gniesmer, Folkhard Holzel, Christian Schwarze, Christoph Wilken
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Patent number: 9518531Abstract: A piston of an internal combustion engine, includes a piston upper part and a piston lower part which are supported via corresponding joining webs, in each case forming a joining zone connected in a material-to-material manner by means of a multi-orbital rotary friction weld. The joining webs and which are in each case directly connected have a wall thickness S1, S2 which is identical as far as possible. The piston encloses a combustion-chamber recess and at least one cooling duct which are made centrally or eccentrically in the piston. The combustion chamber recess and the cooling duct form a circular contour or a contour which deviates from a circular shape.Type: GrantFiled: November 6, 2012Date of Patent: December 13, 2016Assignee: KS Kolbenschmidt GmbHInventors: Volker Gniesmer, Emmerich Ottliczky, Gunter Bayer
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Publication number: 20160326980Abstract: A method for producing a piston of an internal combustion engine and to a piston produced according to the method having a piston crown with annular grooves, a combustion-chamber bowl, and piston shaft having a pin bore for receiving a pin, wherein both a combustion-chamber rim and a combustion-chamber bowl base are melted and thereafter solidified.Type: ApplicationFiled: July 21, 2016Publication date: November 10, 2016Inventor: Volker Gniesmer
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Publication number: 20160222909Abstract: A cooling channel piston for an internal combustion engine which includes a piston bottom and a piston shaft that are joined thereto of a friction welding process. The piston bottom and the piston shaft jointly form a cooling channel. An annular wall which radially delimits the cooling channel towards the outside is formed by the piston bottom and/or the piston shaft. The annular wall can be sealed by a welding process once the piston bottom and the piston shaft have been joined together.Type: ApplicationFiled: July 9, 2015Publication date: August 4, 2016Inventors: Volker Gniesmer, Gerhard Luz, Jochem Muller, Christian Schaller
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Patent number: 9238283Abstract: A piston of an internal combustion engine includes a top part produced from steel and a bottom part, which are integrally bonded in the region of a contact geometry via joining webs by a friction weld to form a structural unit. At least one cooling duct permeated by a coolant is integrated in the piston, wherein a lubricating oil of the internal combustion engine passes as the coolant into an inlet opening via a free jet of an injection nozzle, flows through the cooling duct and leaves the cooling duct via an outlet opening. For the introduction of the coolant into the cooling duct, the inlet opening is assigned a flow pipe which is inserted in the bottom part and protrudes from a cooling duct base, the opening of the flow pipe being arranged above the weld beads of the friction weld.Type: GrantFiled: April 7, 2009Date of Patent: January 19, 2016Assignee: KS KOLBENSCHMIDT GMBHInventor: Volker Gniesmer
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Publication number: 20150345421Abstract: A method for producing a piston of an internal combustion engine and to a piston produced according to the method having a piston crown with annular grooves, a combustion-chamber bowl, and piston shaft having a pin bore for receiving a pin, wherein both a combustion-chamber rim and a combustion-chamber bowl base are melted and thereafter solidified.Type: ApplicationFiled: June 24, 2015Publication date: December 3, 2015Inventor: Volker Gniesmer
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Publication number: 20150233321Abstract: A method for producing a cooling channel system for an internal combustion engine, which has a cooling channel in the piston crown. The piston crown is adjoined by a lower piston part having a piston boss, pin bores and piston skirts. Firstly, a piston blank having a peripheral collar projecting radially in the region of the piston crown is produced, wherein the collar, forming a subsequent ring zone wall is then reshaped and, in a transition area between the piston crown and the lower piston part, a contact area for the collar is formed, and the collar is reshaped in such a way until the outer radially peripheral edge comes very close to or completely into contact with the contact area in order to form a closed cooling channel. Following the reshaping, the end region of the ring zone wall forms a defined gap (X) with respect to the upper edge of the piston skirt.Type: ApplicationFiled: January 28, 2015Publication date: August 20, 2015Inventor: Volker Gniesmer
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Publication number: 20150176522Abstract: A piston of an internal combustion engine, includes a piston upper part and a piston lower part which are supported via corresponding joining webs, in each case forming a joining zone connected in a material-to-material manner by means of a multi-orbital rotary friction weld. The joining webs and which are in each case directly connected have a wall thickness S1, S2 which is identical as far as possible. The piston encloses a combustion-chamber recess and at least one cooling duct which are made centrally or eccentrically in the piston. The combustion chamber recess and the cooling duct form a circular contour or a contour which deviates from a circular shape.Type: ApplicationFiled: November 6, 2012Publication date: June 25, 2015Applicant: KS KOLBENSCHMIDT GMBHInventors: Volker Gniesmer, Emmerich Ottliczky, Gunter Bayer
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Publication number: 20150047597Abstract: In order to machine at least one workpiece on a lathe, where the workpiece rotates in the lathe and the at least one region to be machined of the workpiece is machined with the aid of at least one tool of the lathe, where the tool is moved at least parallel to the rotation axis of the workpiece, where the tool is moved parallel to the rotation axis of the workpiece such that the machined region of the workpiece is formed in a rotationally asymmetrical manner with respect to the rotation axis of the workpiece after machining. Furthermore, the invention disclosure relates to a cooling duct to a piston wall, and to a combustion-chamber hollow of a piston and also to a lathe.Type: ApplicationFiled: September 11, 2012Publication date: February 19, 2015Applicant: KS KOLBENSCHMIDT GMBHInventor: Volker Gniesmer
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Publication number: 20150027401Abstract: The invention relates to a piston (1) of an internal combustion engine, which piston (1) has a piston head (2) with a ring field (3) and a skirt part which is arranged on the piston head (2), wherein the skirt part has at least two load-bearing skirt-wall sections (4a, 4b), and the load-bearing skirt-wall sections (4a, 4b) are connected to one another via at least two obliquely positioned box walls (5) which are set back with respect to the piston external diameter. In each case one pin boss (9) for receiving a piston pin is arranged in the box wall (5) and one skirt-wall section (4a) forms the pressure side and the other skirt-wall section (4b) forms the counter-pressure side. According to the invention that the inner surface of the pin boss (9), in relation to the piston centre, runs flushly with respect to the surface of the associated box wall (5), and the box wall (5) has a concave profile in the transverse extent with respect to the direction of the pin boss (9).Type: ApplicationFiled: August 3, 2012Publication date: January 29, 2015Applicant: KS KOLBENSCHMIDT GMBHInventor: Volker Gniesmer
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Publication number: 20150020681Abstract: A stroke piston for a stroke piston compressor for generating compressed air for a vehicle, such as a commercial vehicle, includes a piston body with a piston floor, a piston skirt with piston skirt walls and pin hubs for receiving a piston pin, and at least two piston rings, which can be inserted into circumferential ring grooves of the piston body. Ridges of the piston body are provided between each two ring grooves and between the piston floor and the first ring groove arranged closest to the piston floor and the ring groove arranged closest to the piston skirt facing away from the other ring groove or grooves. At least one of the ridges is recessed at least over a partial section of its ridge height, which is measured parallel to the axis of the piston body, with at least one recess relative to the diameter of the piston body.Type: ApplicationFiled: July 7, 2012Publication date: January 22, 2015Applicant: WABCO GmbHInventors: Volker Gniesmer, Folkhard Hölzel, Christian Schwarze, Christoph Wilken
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Publication number: 20140326130Abstract: A cylinder of an internal combustion engine, in which cylinder liner an oscillating piston is guided on a running surface wherein the cylinder line is fixed vertically by means of a collar between a cylinder housing and a cylinder head. The wet cylinder includes an outer side which deviates from a circular shape and/or a rotationally asymmetrical outer contour of the collar. The cylinder liner is fitted in a positionally oriented manner in a corresponding receptable of the cylinder housing.Type: ApplicationFiled: September 14, 2012Publication date: November 6, 2014Applicant: KS KOLBENSCHMIDT GMBHInventor: Volker Gniesmer
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Piston for internal combustion engines, produced by means of a multi-orbital friction welding method
Patent number: 8789273Abstract: A method for producing a piston of an internal combustion engine, designed as a one-piece cooling channel piston. The piston includes an upper part and a lower part supported by corresponding circumferential joining bosses together forming a joining zone. In order to produce a bonded joint of the upper part and the lower part, the joining bosses are connected by means of multiorbital friction welding in the region of a rotationally symmetrical or rotationally asymmetrical joining zone.Type: GrantFiled: January 30, 2009Date of Patent: July 29, 2014Assignee: KS Kolbenschmidt GmbHInventors: Michael Albert Janssen, Gerhard Luz, Volker Gniesmer, Steffen Stork, Martin Weissert -
Publication number: 20130263814Abstract: produced according to the method having a piston crown with annular grooves, a combustion-chamber bowl, and piston shaft having a pin bore for receiving a pin, wherein both a combustion-chamber rim and a combustion-chamber bowl base are melted and thereafter solidified.Type: ApplicationFiled: October 5, 2011Publication date: October 10, 2013Applicant: KS KOLBENSCHMIDT GMBHInventor: Volker Gniesmer