Patents by Inventor Sascha-Oliver Boczek

Sascha-Oliver Boczek 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).

  • Patent number: 9339898
    Abstract: A method for the production of a piston made of steel, for an internal combustion engine, in which the upper piston part is produced using the forging method, and the lower piston part is produced using the forging or casting method, and they are subsequently welded to one another. To simplify the production method and make it cheaper, the upper piston part is forged using the method of hot forming and of cold calibration, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: May 17, 2016
    Assignee: MAHLE International GmbH
    Inventors: Rainer Scharp, Gerhard Berr, Sascha-Oliver Boczek, Reiner Mueller
  • Publication number: 20150247475
    Abstract: A piston for an internal combustion engine includes a piston head and a piston skirt, wherein the piston head has a piston base, a circumferential ring part and, in the region of the ring part, a circumferential closed cooling channel or sealed cavity. An inner side of the piston has two lower surfaces which transform continuously in the region of the piston central axis (M) to form an arched surface. The piston skirt has piston hubs provided with hub bores which are interconnected by means of running surfaces which have inner surfaces facing the inside of the piston. Starting from the free ends of the piston skirt, inside the piston on the pressure side (DS) and/or counter pressure side (GDS), an inner surface of a running surface continuously transforms into a guiding surface for a coolant which transforms continuously on the side thereof into a lower surface.
    Type: Application
    Filed: August 27, 2013
    Publication date: September 3, 2015
    Applicant: MAHLE INTERNATIONAL GmbH
    Inventors: Ulrich Bischofberger, Sascha-Oliver Boczek
  • Patent number: 9108274
    Abstract: A piston may include a piston upper part and a piston lower part. The piston upper part may be welded via a contact surface with the piston lower part forming a cooling duct therebetween. The cooling duct may define an inlet opening and an outlet opening extending from the piston lower part in the cooling duct. A welding bead may be formed within the cooling duct at each of the inlet opening and the outlet opening.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 18, 2015
    Assignee: Mahle International GmbH
    Inventor: Sascha-Oliver Boczek
  • Publication number: 20150176523
    Abstract: The invention relates to a method for producing a piston (1) for an internal combustion engine, characterised by the following method steps: producing an upper piston part (2) and a lower piston part (3) having one or more recesses (4, 4?) for forming a closed cavity (5); introducing a heat transfer medium (6), in particular one or more alkali metals, that is solid or paste-like at ambient temperature and liquid at the intended operating temperature of the piston, into the recesses (4, 4?) of the lower piston part (3) and/or of the upper piston part (2), wherein the heat transfer medium (6) is provided in order, during the operative state of the piston (1), to effect heat transport within the piston (1) by convection; closing the recesses to form the closed cavity (5) which encloses the heat transfer medium (6); and connecting the upper piston part (2) to the lower piston part (3). This enables the piston (1) to be produced in a simplified manner.
    Type: Application
    Filed: July 18, 2013
    Publication date: June 25, 2015
    Applicant: MAHLE International GmbH
    Inventors: Sascha-Oliver Boczek, Ulrich Bischofberger, Rainer Scharp
  • Publication number: 20150101191
    Abstract: A method for the production of a piston made of steel, for an internal combustion engine, in which the upper piston part is produced using the forging method, and the lower piston part is produced using the forging or casting method, and they are subsequently welded to one another. To simplify the production method and make it cheaper, the upper piston part is forged using the method of hot forming and of cold calibration, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.
    Type: Application
    Filed: December 19, 2014
    Publication date: April 16, 2015
    Applicant: MAHLE INTERNATIONAL GMBH
    Inventors: Rainer SCHARP, Gerhard BERR, Sascha-Oliver BOCZEK, Reiner MUELLER
  • Publication number: 20150090215
    Abstract: A piston for an internal combustion engine may include an encircling ring section in a region of a piston crown. The piston may include a convection region, which has at least one cavity containing a heat transfer medium for dissipation of heat from the piston crown to an underside of the piston. The piston may include a heat insulating region, which is arranged between the ring section and the convection region and thermally insulates the ring section.
    Type: Application
    Filed: April 15, 2013
    Publication date: April 2, 2015
    Inventor: Sascha-Oliver Boczek
  • Publication number: 20150060526
    Abstract: The present invention relates to a method for the production of a piston (1), composed of a piston upper part (2) and a piston lower part (3), of an internal combustion engine, in which the piston upper part (2) is welded with the piston lower part (3) via a contact surface (4) and thereby a cooling duct (5), delimited therebetween, is formed. It is essential to the invention here that for the production or keeping free of an inlet opening (6) and/or of an outlet opening (7) of the cooling duct (5) during or immediately after the welding of the piston upper part (2) with the piston lower part (3) at least one pin (8) is held out from the piston lower part (3) in the cooling duct (5) or is pushed therein and is drawn out again after the welding process, so that a welding bead (9) occurring on the welding process does not constrict a cross-section of the inlet opening (6) and/or of the outlet opening (7). Hereby, the piston (1) can be produced at a comparatively favourable cost.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 5, 2015
    Inventor: Sascha-Oliver Boczek
  • Patent number: 8943687
    Abstract: A method for the production of a piston made of steel, for an internal combustion engine, in which the upper piston part is produced using the forging method, and the lower piston part is produced using the forging or casting method, and they are subsequently welded to one another. To simplify the production method and make it cheaper, the upper piston part is forged using the method of hot forming and of cold calibration, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: February 3, 2015
    Assignee: MAHLE International GmbH
    Inventors: Rainer Scharp, Gerhard Berr, Sascha-Oliver Boczek, Reiner Mueller
  • Patent number: 8631781
    Abstract: A piston for an internal combustion engine has an upper piston part and a lower piston part, which form an outer circumferential cooling channel. The piston has pin boss connections that lie opposite one another, at which pin bosses are provided, which have pin bores that define a center axis (M). The upper piston part and the lower piston part are connected with one another by way of outer joining surfaces and inner joining surfaces. A bridge that runs essentially parallel to the center axis (M) is configured in the lower piston part, in the region of the pin boss connections. The bridge has two longitudinal sides that delimit an upper bridge surface.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: January 21, 2014
    Assignee: MAHLE International GmbH
    Inventors: Sascha-Oliver Boczek, Rainer Scharp
  • Patent number: 8528206
    Abstract: A method for the production of a piston (1) made of steel, for an internal combustion engine, in which the upper piston part (3) is produced using the forging method, and the lower piston part (4) is produced using the forging or casting method, and they are subsequently welded to one another. To simplify the production method and make it cheaper, the upper piston part is forged using the method of semi-hot forming, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: September 10, 2013
    Assignee: MAHLE International GmbH
    Inventors: Rainer Scharp, Gerhard Berr, Sascha-Oliver Boczek, Reiner Mueller
  • Publication number: 20130008404
    Abstract: A piston for an internal combustion engine has an upper piston part and a lower piston part, which form an outer circumferential cooling channel. The piston has pin boss connections that lie opposite one another, at which pin bosses are provided, which have pin bores that define a center axis (M). The upper piston part and the lower piston part are connected with one another by way of outer joining surfaces and inner joining surfaces. A bridge that runs essentially parallel to the center axis (M) is configured in the lower piston part, in the region of the pin boss connections. The bridge has two longitudinal sides that delimit an upper bridge surface.
    Type: Application
    Filed: August 30, 2011
    Publication date: January 10, 2013
    Applicant: MAHLE International GmbH
    Inventors: Sascha-Oliver Boczek, Rainer Scharp
  • Publication number: 20120279390
    Abstract: A piston may include a piston upper part and a piston lower part. The piston upper part may be welded via a contact surface with the piston lower part forming a cooling duct therebetween. The cooling duct may define an inlet opening and an outlet opening extending from the piston lower part in the cooling duct. A welding bead may be formed within the cooling duct at each of the inlet opening and the outlet opening.
    Type: Application
    Filed: September 23, 2011
    Publication date: November 8, 2012
    Inventor: Sascha-Oliver Boczek
  • Publication number: 20120240881
    Abstract: A multi-part piston for an internal combustion engine has an upper piston part having a piston crown, and a lower piston part having pin boss supports and pin bosses connected with them. The upper piston part and lower piston part each have an inner and an outer support element, which delimit an outer circumferential cooling channel. The inner support elements delimit a cavity that is open toward the pin bosses, and the cavity is provided with a separate cooling oil collector that has at least one cooling oil opening.
    Type: Application
    Filed: June 6, 2012
    Publication date: September 27, 2012
    Applicant: MAHLE INTERNATIONAL GMBH
    Inventors: Rainer SCHARP, Klaus KELLER, Volker WEISSE, Sascha-Oliver BOCZEK
  • Publication number: 20120222305
    Abstract: What is proposed is a method for the production of a piston (1) made of steel, for an internal combustion engine, in which the upper piston part (3) is produced using the forging method, and the lower piston part (4) is produced using the forging or casting method, and they are subsequently welded to one another. To simplify the production method and make it cheaper, the upper piston part is forged using the method of hot forming and of cold calibration, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.
    Type: Application
    Filed: April 18, 2011
    Publication date: September 6, 2012
    Applicant: MAHLE International GmbH
    Inventors: Rainer Scharp, Gerhard Berr, Sascha-Oliver Boczek, Reiner Mueller
  • Publication number: 20120222304
    Abstract: What is proposed is a method for the production of a piston (1) made of steel, for an internal combustion engine, in which the upper piston part (3) is produced using the forging method, and the lower piston part (4) is produced using the forging or casting method, and they are subsequently welded to one another. To simplify the production method and make it cheaper, the upper piston part is forged using the method of semi-hot forming, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.
    Type: Application
    Filed: April 18, 2011
    Publication date: September 6, 2012
    Applicant: MAHLE International GmbH
    Inventors: Rainer Scharp, Gerhard Berr, Sascha-Oliver Boczek, Reiner Mueller
  • Publication number: 20120000439
    Abstract: A piston for an internal combustion engine has an upper and a lower piston part. The upper piston part has a cooling cavity on its underside, and the lower piston part has a ceiling element with a cover hood, which closes off the cooling cavity. The cover hood is securely attached on the ceiling element if the central part of the cover element has an oil drain opening, the top of which is formed as a neck, the upper edge of which neck has a circumferential bead having an underside configured as a circumferential undercut, and if the cover hood has a centrally located opening, the edge of which has slits that are distributed over the circumference and lie radially. The cover hood is attached on the neck so that the sheet-metal tabs are snapped in below the undercut, between the slits, and form a secure snap-in connection with the neck.
    Type: Application
    Filed: June 27, 2011
    Publication date: January 5, 2012
    Applicant: MAHLE International GmbH
    Inventors: Rainer Scharp, Sascha-Oliver Boczek
  • Publication number: 20100147250
    Abstract: A piston for an internal combustion engine has a piston crown and a cooling channel disposed close to the piston crown and radially on the outside. The cooling channel is delimited on the underside by ribs uniformly distributed over the circumference, with openings lying between them. The openings of the cooling channel are closed off with two metal cover sheets attached to its underside, in the shape of a half circle. There is at least one oil inflow opening and at least one oil outflow opening in or between the cover sheets.
    Type: Application
    Filed: November 19, 2009
    Publication date: June 17, 2010
    Inventors: Sascha-Oliver Boczek, Rainer Scharp
  • Publication number: 20100108001
    Abstract: A multi-part piston for an internal combustion engine has an upper piston part having a piston crown, and a lower piston part having pin boss supports and pin bosses connected with them. The upper piston part and lower piston part each have an inner and an outer support element, which delimit an outer circumferential cooling channel. The inner support elements delimit a cavity that is open toward the pin bosses, and the cavity is provided with a separate cooling oil collector that has at least one cooling oil opening. In a method for producing a piston, the upper and lower piston parts are manufactured, the cooling oil collector is inserted into one of the upper and lower piston parts in a region of the cavity, and the upper and lower piston parts are connected together at their support elements.
    Type: Application
    Filed: October 19, 2009
    Publication date: May 6, 2010
    Inventors: Rainer Scharp, Klaus Keller, Volker Weisse, Sascha-Oliver Boczek