Patents by Inventor Markus POPP

Markus POPP 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).

  • Publication number: 20240186540
    Abstract: A blocking device for the recirculation loop in a fuel cell stack comprises a hydrogen inlet, a recirculation gas inlet, and a purge line. In order to dispense with the need for some valves, a recirculation loop blocking valve is provided which is switched by an upstream hydrogen switching valve, and a purge valve is integrated which is also configured as a pressure relief valve.
    Type: Application
    Filed: February 7, 2022
    Publication date: June 6, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Jan Pfannenmueller, Markus Popp
  • Publication number: 20240170694
    Abstract: A blocking device for a recirculation loop in a fuel cell stack comprises a hydrogen inlet and a recirculation gas inlet. In order to obtain an inexpensive blocking device for the recirculation loop, a recirculation loop blocking valve is provided, which is switched by an upstream hydrogen switching valve.
    Type: Application
    Filed: January 12, 2022
    Publication date: May 23, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Jan Pfannenmueller, Matthias Reum, Markus Popp
  • Patent number: 10563575
    Abstract: A switching valve module is provided in a connecting rod of a reciprocating internal combustion engine in order to control a distributing device for changing the compression ratio of a cylinder unit of the reciprocating internal combustion engine. In order to provide an arrangement of a mechanically actuated switching valve module which can be advantageously integrated into the connecting rod, the switching valve module should be arranged in a module housing of which at least partly has an outer cylindrical contour and a transverse through-bore for receiving a control slide valve, and the cylindrical section of the switching valve module can be inserted into a receiving bore in the connecting rod that is transverse to a longitudinal central axis of a connecting rod bearing eye.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: February 18, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus Popp, Michael Knorr, Jan Pfannenmüller
  • Publication number: 20190301364
    Abstract: A switching valve module is provided in a connecting rod of a reciprocating internal combustion engine in order to control a distributing device for changing the compression ratio of a cylinder unit of the reciprocating internal combustion engine. In order to provide an arrangement of a mechanically actuated switching valve module which can be advantageously integrated into the connecting rod, the switching valve module should be arranged in a module housing of which at least partly has an outer cylindrical contour and a transverse through-bore for receiving a control slide valve, and the cylindrical section of the switching valve module can be inserted into a receiving bore in the connecting rod that is transverse to a longitudinal central axis of a connecting rod bearing eye.
    Type: Application
    Filed: June 26, 2017
    Publication date: October 3, 2019
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Markus Popp, Michael Knorr, Jan Pfannenmüller
  • Patent number: 10184408
    Abstract: A device for changing a compression ratio of a cylinder unit of a reciprocating piston internal combustion engine has an eccentric bushing which is rotatably arranged in a bore of a connecting rod eye. Said eye encloses a crank pin of a crankshaft, and the bushing is rotatably guided in the bore and can be locked via locking openings, which are arranged to be offset from each other by preferably approximately 180°. The connecting rod has a locking apparatus which interacts optionally with the locking openings and via which the eccentric bushing can only ever be transferred from one position to the next. The locking apparatus has a sliding guideway extending parallel to the longitudinal axis of the bore of the connecting rod bearing eye. The sliding guide interacts with actuating pins arranged in the locking openings and can be displaced radially with respect to the bushing.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: January 22, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus Popp, Andreas Moeller, Swen Doerrie
  • Patent number: 10087834
    Abstract: A device for changing a compression ratio of a cylinder unit of a reciprocating piston combustion engine is provided. An eccentric bushing is rotatably arranged in a receiving bore hole of a bearing eye of a connecting rod (“conrod”). The conrod bearing eye is formed by a conrod upper part and a conrod lower part, and which surrounds a crankpin of a crankshaft. In addition, the eccentric bushing is rotatably guided in the receiving bore hole and can be locked preferably in two positions which are offset from one another by approximately 180° in the circumferential direction of the eccentric bushing. In order to achieve a targeted rotation of the eccentric bushing in the bore hole of the conrod bearing eye between the locking positions, a freewheel is arranged between an outer casing surface of the eccentric bushing and the receiving bore hole of the conrod bearing eye.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 2, 2018
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus Popp, Andreas Moeller, Swen Doerrie
  • Publication number: 20170276072
    Abstract: A device for changing a compression ratio of a cylinder unit of a reciprocating piston internal combustion engine has an eccentric bushing which is rotatably arranged in a bore of a connecting rod eye. Said eye encloses a crank pin of a crankshaft, and the bushing is rotatably guided in the bore and can be locked via locking openings, which are arranged to be offset from each other by preferably approximately 180°. The connecting rod has a locking apparatus which interacts optionally with the locking openings and via which the eccentric bushing can only ever be transferred from one position to the next. The locking apparatus has a sliding guideway extending parallel to the longitudinal axis of the bore of the connecting rod bearing eye. The sliding guide interacts with actuating pins arranged in the locking openings and can be displaced radially with respect to the bushing.
    Type: Application
    Filed: June 16, 2015
    Publication date: September 28, 2017
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus POPP, Andreas MOELLER, Swen DOERRIE
  • Publication number: 20170268422
    Abstract: A device for changing a compression ratio of a cylinder unit of a reciprocating piston combustion engine is provided. An eccentric bushing is rotatably arranged in a receiving bore hole of a bearing eye of a connecting rod (“conrod”). The conrod bearing eye is formed by a conrod upper part and a conrod lower part, and which surrounds a crankpin of a crankshaft. In addition, the eccentric bushing is rotatably guided in the receiving bore hole and can be locked preferably in two positions which are offset from one another by approximately 180° in the circumferential direction of the eccentric bushing. In order to achieve a targeted rotation of the eccentric bushing in the bore hole of the conrod bearing eye between the locking positions, a freewheel is arranged between an outer casing surface of the eccentric bushing and the receiving bore hole of the conrod bearing eye.
    Type: Application
    Filed: June 16, 2015
    Publication date: September 21, 2017
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus POPP, Andreas MOELLER, Swen DOERRIE
  • Patent number: 9540970
    Abstract: A method for operating an internal combustion engine with a sliding cam valve train that has a cam part (2) with three adjacent cams of different lifts (H, M, L) and a groove-shaped connecting link path with two path sections (S1, S2) that lift in both axial directions of the cam part and are arranged completely one behind the other around the circumference is provided. An actuator (10) selectively couples two actuator pins (7, 8) in the connecting link path, in order to move the cam part. The base position of the cam part should be moved into a desired axial position during the operation of the internal combustion engine through successive coupling of the actuator pins in the connecting link path.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: January 10, 2017
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus Popp, Jan Pfannenmuller
  • Patent number: 9334764
    Abstract: A sliding cam valve train for an internal combustion engine is provided. A cam piece (3) displaceably arranged on a carrier shaft (2) includes a cam group (4, 5) with differing cam lifts and an axial groove with two groove tracks (8, 9), which are arranged completely behind one another in the circumferential direction of the axial groove. An actuator pin (10) which may be introduced into the axial groove displaces the cam piece in the direction of both groove tracks. Each of the groove tracks end with a radially lifting ramp (17, 18) for extending the actuator pin from the axial groove. The radial lift of the exit ramps should be significantly smaller than the groove base depth of the axial groove between the exit ramps.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: May 10, 2016
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Markus Popp, Harald Elendt, Jan Pfannenmuller
  • Publication number: 20150308302
    Abstract: A sliding cam valve train for an internal combustion engine is provided. A cam piece (3) displaceably arranged on a carrier shaft (2) includes a cam group (4, 5) with differing cam lifts and an axial groove with two groove tracks (8, 9), which are arranged completely behind one another in the circumferential direction of the axial groove. An actuator pin (10) which may be introduced into the axial groove displaces the cam piece in the direction of both groove tracks. Each of the groove tracks end with a radially lifting ramp (17, 18) for extending the actuator pin from the axial groove. The radial lift of the exit ramps should be significantly smaller than the groove base depth of the axial groove between the exit ramps.
    Type: Application
    Filed: November 7, 2013
    Publication date: October 29, 2015
    Applicant: SCHAEEFFLER TECHNOLOGIES AG & Co, KG
    Inventors: Markus Popp, Harald Elendt, Jan Pfannenmüller
  • Publication number: 20150233271
    Abstract: A method for operating an internal combustion engine with a sliding cam valve train that has a cam part (2) with three adjacent cams of different lifts (H, M, L) and a groove-shaped connecting link path with two path sections (S1, S2) that lift in both axial directions of the cam part and are arranged completely one behind the other around the circumference is provided. An actuator (10) selectively couples two actuator pins (7, 8) in the connecting link path, in order to move the cam part. The base position of the cam part should be moved into a desired axial position during the operation of the internal combustion engine through successive coupling of the actuator pins in the connecting link path.
    Type: Application
    Filed: February 18, 2015
    Publication date: August 20, 2015
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus Popp, Jan Pfannenmuller
  • Publication number: 20140308115
    Abstract: A controllable coolant pump of a cooling circuit for an internal combustion engine, having a pump housing, in which a pump shaft with associated impeller is rotatably arranged. The impeller conveys a coolant as a volume flow via an intake connection in a pressure or spiral channel of the coolant pump. The volume flow can be influenced by a baffle plate which encloses the outside of the impeller, the push rod of the baffle plate being guided in the pump shaft. In connection with an actuator the baffle plate can be continuously adjusted between two limit positions against the force of a spring. A control element, which has an electro-hydraulic action and which is integrated into the pump shaft, serves as an actuator, wherein the pressurized coolant in the coolant pump is provided as a hydraulic fluid.
    Type: Application
    Filed: August 9, 2012
    Publication date: October 16, 2014
    Applicant: Schaeffler Technologies GmbH & Co. KG
    Inventors: Markus Popp, Eduard Golovatai-Schmidt
  • Patent number: 8671893
    Abstract: A controllable coolant pump, insertable in a coolant circuit of an internal combustion engine includes a pump housing, in which a hollow pump shaft is supported rotationally with an allocated impeller. Rotation of the impeller conveys coolant. To control a volume conveyed by the coolant pump an axially displaceable guide disk is provided, allocated to the impeller and cooperating with an actuating mechanism. The guide disk is connected to a push rod, guided in the pump shaft, and is displaceable between two end positions defined by a rear wall and a pump cover of the impeller. The actuating mechanism further includes a displacement pump integrated in the coolant pump, with a coolant flow of the displacement pump being supplied for adjustment of the guide disk via a control valve to an actuator, which includes a piston in a pressure chamber in the pump shaft connected to the push rod.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: March 18, 2014
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Markus Popp, Sebastian Hurst
  • Publication number: 20140003913
    Abstract: A coolant pump for a coolant circuit of an internal combustion engine, the coolant pump having a pump housingin which is mounted a drivable shaft, to one end of which is attached an impeller-which has vanes extending into a suction chamber and is connected to a cover plate. Fluid can be drawn into the suction chamber through an intake port of the pump housing by joint rotation of the impeller and the cover plate and can be conveyed by the vanes into the pump housing. A guide plate, which is axially displaceable by an actuation unit, is disposed between the impeller and the cover plate. The guide plate has a contour corresponding to the impeller and a collar oriented toward the impeller. The coolant pump is characterized in that the guide plate has at least one opening.
    Type: Application
    Filed: March 15, 2012
    Publication date: January 2, 2014
    Inventors: Sebastian Hurst, Markus Popp, Carsten Lueken
  • Publication number: 20130309103
    Abstract: A coolant pump of an internal combustion engine, with a pump housing and a hollow shaft rotatably mounted therein. Coolant is delivered via an impeller wheel from a suction connection. The flow is controlled by a guide plate on the impeller wheel that is variably displaceable axially between two end positions. The guide plate is adjustable by a push rod actuator guided in the pump shaft. The actuator has a radial piston pump integrated within the coolant pump with an intake piston and a counterpiston guided in the pump shaft, that are inserted lying opposite one another and delimit a pressure space. The pistons are enclosed outside by a linearly displaceable control element guided in the pump housing. Adjustment of the control element takes place as a function of a rotary angle of the pump shaft via an actuator unit having an electrically operated actuating element and a linear freewheel.
    Type: Application
    Filed: March 14, 2013
    Publication date: November 21, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus Popp, Andreas Nendel
  • Patent number: 8459215
    Abstract: A regulatable coolant pump for a cooling circuit of an internal combustion engine having a pump housing with a hollow pump shaft with an impeller. Rotation of the impeller moves coolant. An axially displaceable guide disk on the impeller controls a pump displacement volume and works via an actuating mechanism. The guide disk is rigidly connected to a connecting rod guided in the pump shaft. The actuating mechanism includes a displacement pump integrated in the coolant pump, and an actuator formed as a piston-cylinder unit with a pressure chamber in the pump housing that has a circular annular shape positioned to coincide with an outer region of the guide disk. A piston that works together with the guide disk is guided in linearly displaceable fashion in the pressure chamber. A coolant flow of the displacement pump controlled by a control valve charges the pressure chamber to displace the piston.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: June 11, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Sebastian Hurst, Markus Popp
  • Publication number: 20120291724
    Abstract: A controllable coolant pump, insertable in a coolant circuit of an internal combustion engine includes a pump housing, in which a hollow pump shaft is supported rotationally with an allocated impeller. Rotation of the impeller conveys coolant. To control a volume conveyed by the coolant pump an axially displaceable guide disk is provided, allocated to the impeller and cooperating with an actuating mechanism. The guide disk is connected to a push rod, guided in the pump shaft, and is displaceable between two end positions defined by a rear wall and a pump cover of the impeller. The actuating mechanism further includes a displacement pump integrated in the coolant pump, with a coolant flow of the displacement pump being supplied for adjustment of the guide disk via a control valve to an actuator, which includes a piston in a pressure chamber in the pump shaft connected to the push rod.
    Type: Application
    Filed: February 23, 2012
    Publication date: November 22, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus Popp, Sebastian Hurst
  • Publication number: 20120291723
    Abstract: A regulatable coolant pump for a cooling circuit of an internal combustion engine having a pump housing with a hollow pump shaft with an impeller. Rotation of the impeller moves coolant. An axially displaceable guide disk on the impeller controls a pump displacement volume and works via an actuating mechanism. The guide disk is rigidly connected to a connecting rod guided in the pump shaft. The actuating mechanism includes a displacement pump integrated in the coolant pump, and an actuator formed as a piston-cylinder unit with a pressure chamber in the pump housing that has a circular annular shape positioned to coincide with an outer region of the guide disk. A piston that works together with the guide disk is guided in linearly displaceable fashion in the pressure chamber. A coolant flow of the displacement pump controlled by a control valve charges the pressure chamber to displace the piston.
    Type: Application
    Filed: February 22, 2012
    Publication date: November 22, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Sebastian Hurst, Markus Popp
  • Publication number: 20120076640
    Abstract: A controllable coolant pump which has a pump housing. In the pump housing a pump shaft is arranged, which connects a drive wheel to an impeller wheel. In the operating state of the coolant pump, during a rotation of the impeller wheel, coolant is sucked in via a cover disk which is mounted in front of a suction space, and is conveyed into an annular channel of the pump housing. A delivery volume of the coolant pump can be influenced via an actuator which interacts with an axially displaceable guide plate assigned to the impeller wheel. An elastic sealing element is provided for effective sealing of an annular gap which is produced in a functionally required manner between the impeller wheel and the guide plate. The sealing element is inserted in an annular groove of the impeller wheel and is supported sealingly on a cylindrical section of the guide plate.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 29, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Markus POPP, Eduard GOLOVATAI-SCHMIDT