Patents by Inventor Markus Duesmann
Markus Duesmann 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: 7533640Abstract: The invention relates to a contoured body having an additional cam contour for effecting a valve control of a piston combustion engine that is used, in particular, for an internal exhaust gas recirculation.Type: GrantFiled: August 13, 2004Date of Patent: May 19, 2009Assignees: Fev Motorentechnik GmbH, Mahle Ventiltrieb GmbHInventors: Joachim Hahn, Helge Djie, Sven Lauer, Markus Duesmann, Falk Schneider, Christopher Steinmetz, Hermann Hoffmann, Martin Lechner
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Publication number: 20080115750Abstract: The invention relates to a contoured body having an additional cam contour for effecting a valve control of a piston combustion engine that is used, in particular, for an internal exhaust gas recirculation.Type: ApplicationFiled: August 13, 2004Publication date: May 22, 2008Inventors: Joachim Hahn, Helge Djie, Sven Lauer, Markus Duesmann, Falk Schneider, Christopher Steinmetz, Hermann Hoffmann, Martin Lechner
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Publication number: 20080029058Abstract: In a control arrangement with a control unit for activating and deactivating cylinders of a multi-cyliner internal combustion engine including throttle units assigned to the various cylinders of the internal combustion engine, the control unit provides for opening and/or closing of the throttle units assigned to the cylinder during the switching process in accordance with a predetermined timing function.Type: ApplicationFiled: March 30, 2007Publication date: February 7, 2008Inventors: Markus Duesmann, Thomas Stolk, Alexander Gaisberg-Helfenberg
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Patent number: 7249597Abstract: The invention relates to the internal exhaust-gas recirculation in an internal combustion engine with gas exchange valves periodically controlled by a camshaft (22) in accordance with the four-stroke principle, in which, during the gas exchange exhausting of exhaust gas from the respective cylinder (1) into the exhaust duct (5), an intake valve (2) associated with the respective cylinder (1) is open in a crank angle range after top dead center of the ignition of the gas mixture present in the cylinder (1), in order to exhaust part of the exhaust gas into an intake duct (3), so that during the next gas exchange intake both fresh gas and exhaust gas are taken in from the intake duct (3), the respective intake valve (2) being actuated during the gas exchange exhausting independently of the periodic gas exchange intake, and the additional opening of the respective intake valve (2) being carried out in the range from 110 to 150% of the opening angle of the start of opening of the exhaust duct (5) by the exhaust vaType: GrantFiled: April 14, 2004Date of Patent: July 31, 2007Assignee: FEV Motorentechnik, GmbHInventors: Jochen Müller, Bernd Kircher, Markus Duesmann, Enno Lohse
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Publication number: 20070101714Abstract: In an exhaust gas turbocharger for an internal combustion engine comprising a compressor and a turbine interconnected by a shaft in a rotationally fixed manner, and an electric machine which can be connected to the exhaust gas turbocharger via a clutch, the exhaust gas turbocharger can be driven at least temporarily by a disk-shaped flywheel rotatably supported on the shaft and being operable selectively by the turbine and by an electro-dynamic structure for improving the response behavior of the exhaust gas turbocharger.Type: ApplicationFiled: December 2, 2006Publication date: May 10, 2007Inventors: Markus Duesmann, Matthias Gregor, Jens Meintschel, Thomas Stolk, Alexander Gaisberg-Helfenberg
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Patent number: 7146953Abstract: The invention relates to a mechanical valve play compensation element for a valve drive on a piston combustion engine, comprising a first pressure part (1) which is axially displaceable in relation to a second pressure part (2) and which is fixed in such a way that it can turn about the axis of displacement; a torsion spring element (10) which acts between the first pressure part (1) and the second pressure part (2) and is axially flexible at least to a certain extent; and at least one helical surface (9.1) on the first pressure part (1), to which a corresponding helical surface (9.2) on the second pressure part (2) is allocated, these forming a pair of helical surfaces (9). The surfaces of the helical surface pair (9) are configured as a rough surface and are pressed against each other by the torsion spring element (10).Type: GrantFiled: December 3, 2004Date of Patent: December 12, 2006Assignee: Fev Motorentechnik GmbHInventor: Markus Duesmann
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Publication number: 20060102157Abstract: The invention relates to the internal exhaust-gas recirculation in an internal combustion engine with gas exchange valves periodically controlled by a camshaft (22) in accordance with the four-stroke principle, in which, during the gas exchange exhausting of exhaust gas from the respective cylinder (1) into the exhaust duct (5), an intake valve (2) associated with the respective cylinder (1) is open in a crank angle range after top dead center of the ignition of the gas mixture present in the cylinder (1), in order to exhaust part of the exhaust gas into an intake duct (3), so that during the next gas exchange intake both fresh gas and exhaust gas are taken in from the intake duct (3), the respective intake valve (2) being actuated during the gas exchange exhausting independently of the periodic gas exchange intake, and the additional opening of the respective intake valve (2) being carried out in the range from 110 to 150% of the opening angle of the start of opening of the exhaust duct (5) by the exhaust vaType: ApplicationFiled: April 14, 2004Publication date: May 18, 2006Applicant: REV Motorentechnik GmbHInventors: Jochen Müller, Bernd Kircher, Markus Duesmann, Enno Lohse
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Patent number: 7040267Abstract: The invention relates to a variably adjustable mechanical valve gear for at least one gas-reversing valve (1) provided with a closing spring (2) on a piston-type internal combustion engine having a drive mechanism (13) for generating a lifting movement that is effective counter to the force of the closing spring (2) on the gas-reversing valve (1) and with a stroke transfer means (4) in the form of a pivoting element (8), arranged between the driving mechanism (13) and the gas-reversing valve (1), which acts upon the gas-reversing valve (1) in the direction of its movement axis (14) and for which the lifting distance in the direction of the movement axis (14) can be changed via an adjustable guide element (11), wherein the pivoting element is connected to the gas-reversing valve with its end that is effective in the direction of the movement axis (14) and to the driving mechanism (13) with its end opposite the gas-reversing valve (1) and is guided to pivot back and forth on the guide element (11) designed as cType: GrantFiled: July 3, 2003Date of Patent: May 9, 2006Assignee: FEV Motorentechnik GmbHInventor: Markus Duesmann
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Publication number: 20050092277Abstract: The invention relates to a mechanical valve play compensation element for a valve drive on a piston combustion engine, comprising a first pressure part (1) which is axially displaceable in relation to a second pressure part (2) and which is fixed in such a way that it can turn about the axis of displacement; a torsion spring element (10) which acts between the first pressure part (1) and the second pressure part (2) and is axially flexible at least to a certain extent; and at least one helical surface (9.1) on the first pressure part (1), to which a corresponding helical surface (9.2) on the second pressure part (2) is allocated, these forming a pair of helical surfaces (9). The surfaces of the helical surface pair (9) are configured as a rough surface and are pressed against each other by the torsion spring element (10).Type: ApplicationFiled: December 3, 2004Publication date: May 5, 2005Applicant: FEV MOTORENTECHNIK GMBHInventor: Markus Duesmann
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Patent number: 6834628Abstract: The invention relates to a mechanical valve play compensation element for a valve drive on a piston combustion engine, comprising a first pressure part (1) which is axially displaceable in relation to a second pressure part (2) and which is fixed in such a way that it can turn about the axis of displacement; a torsion spring element (10) which acts between the first pressure part (1) and the second pressure part (2) and is axially flexible at least to a certain extent; and at least one helical surface (9.1) on the first pressure part (1), to which a corresponding helical surface (9.2) on the second pressure part (2) is allocated, these forming a pair of helical surfaces (9). The surfaces of the helical surface pair (9) are configured as a rough surface and are pressed against each other by the torsion spring element (10).Type: GrantFiled: October 2, 2002Date of Patent: December 28, 2004Assignee: FEV Motorentechnik GmbHInventor: Markus Duesmann
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Publication number: 20040103865Abstract: The invention relates to a variably adjustable mechanical valve gear for at least one gas-reversing valve (1) provided with a closing spring (2) on a piston-type internal combustion engine having a drive mechanism (13) for generating a lifting movement that is effective counter to the force of the closing spring (2) on the gas-reversing valve (1) and with a stroke transfer means (4) in the form of a pivoting element (8), arranged between the driving mechanism (13) and the gas-reversing valve (1), which acts upon the gas-reversing valve (1) in the direction of its movement axis (14) and for which the lifting distance in the direction of the movement axis (14) can be changed via an adjustable guide element (11), wherein the pivoting element is connected to the gas-reversing valve with its end that is effective in the direction of the movement axis (14) and to the driving mechanism (13) with its end opposite the gas-reversing valve (1) and is guided to pivot back and forth on the guide element (11) designed as cType: ApplicationFiled: July 3, 2003Publication date: June 3, 2004Applicant: FEV MOTORENTECHNIK GMBHInventor: Markus Duesmann
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Patent number: 6655331Abstract: A piston-type internal-combustion engine having deactivatable, mechanically actuated cylinder valves that are respectively actuated by at least one camshaft via a roller drag lever (5) comprising two partial levers (5.1, 5.2) that are hinged to one another via an articulated shaft (6), on which the roller (7) associated with a cam (8) of the camshaft is rotatably seated. A locking mechanism (13) is provided to selectively couple or decouple the two partial levers (5.1, 5.2) to activate or deactivate the force transmission between the camshaft and the cylinder valve. The free end 5.11 of one partial lever (5.1) is supported on the cylinder valve (2), and the free end 5.21 of the other partial lever (5.2) is supported on the engine block (11).Type: GrantFiled: February 10, 2003Date of Patent: December 2, 2003Assignee: FEV Motorentechnik GmbHInventors: Markus Duesmann, Joachim Hahn
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Patent number: 6652400Abstract: A chain drive for driving two adjacent parallel shafts, such as two overhead camshafts in an internal combustion engine, includes a drive chain guided by a drive mechanism and chain wheels mounted on the shafts. The chain wheels are axially offset and overlap each other. At least one support wheel on one shaft is associated with the chain wheel on the other shaft. An edge area of the part of the chain which does not engage a chain wheel is guided and supported on the shaft by the support wheel.Type: GrantFiled: November 9, 2001Date of Patent: November 25, 2003Assignee: FEV Motorentechnik GmbHInventors: Markus Duesmann, Lukas Wagener, Rainer Lach, Jürgen Buck
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Publication number: 20030159669Abstract: A piston-type internal-combustion engine having deactivatable, mechanically actuated cylinder valves that are respectively actuated by at least one camshaft via a roller drag lever (5) comprising two partial levers (5.1, 5.2) that are hinged to one another via an articulated shaft (6), on which the roller (7) associated with a cam (8) of the camshaft is rotatably seated. A locking mechanism (13) is provided to selectively couple or decouple the two partial levers (5.1, 5.2) to activate or deactivate the force transmission between the camshaft and the cylinder valve. The free end 5.11 of one partial lever (5.1) is supported on the cylinder valve (2), and the free end 5.21 of the other partial lever (5.2) is supported on the engine block (11).Type: ApplicationFiled: February 10, 2003Publication date: August 28, 2003Inventors: Markus Duesmann, Joachim Hahn
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Publication number: 20030089324Abstract: The invention relates to a mechanical valve play compensation element for a valve drive on a piston combustion engine, comprising a first pressure part (1) which is axially displaceable in relation to a second pressure part (2) and which is fixed in such a way that it can turn about the axis of displacement; a torsion spring element (10) which acts between the first pressure part (1) and the second pressure part (2) and is axially flexible at least to a certain extent; and at least one helical surface (9.1) on the first pressure part (1), to which a corresponding helical surface (9.2) on the second pressure part (2) is allocated, these forming a pair of helical surfaces (9). The surfaces of the helical surface pair (9) are configured as a rough surface and are pressed against each other by the torsion spring element (10).Type: ApplicationFiled: October 2, 2002Publication date: May 15, 2003Inventor: Markus Duesmann
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Publication number: 20020134336Abstract: A chain drive for driving two adjacent parallel shafts, such as two overhead camshafts in an internal combustion engine, includes a drive chain guided by a drive mechanism and chain wheels mounted on the shafts. The chain wheels are axially offset and overlap each other. At least one support wheel on one shaft is associated with the chain wheel on the other shaft. An edge area of the part of the chain which does not engage a chain wheel is guided and supported on the shaft by the support wheel.Type: ApplicationFiled: November 9, 2001Publication date: September 26, 2002Inventors: Markus Duesmann, Lukas Wagener, Rainer Lach, Jurgen Buck
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Patent number: 6425356Abstract: The present invention relates to a piston-type internal combustion engine comprising gas-exchange valves which can be driven in a completely variable manner by a motor control (2) and which communicate with an air supply channel (4) provided with a device (6) for generating a negative pressure using the energy components of the air flowing through said air supply channel (4). This device is provided with means that can be driven for adaptation to the modifications in the flow energy which are inherent to the operation, and communicates with at least one negative-pressure user (8, 9, 10) through at least one negative-pressure duct (7).Type: GrantFiled: September 5, 2000Date of Patent: July 30, 2002Assignee: FEV Motorentechnik GmbHInventors: Martin Pischinger, Markus Duesmann, Enno Lohse, Michael Schebitz, Wolfgang Salber
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Patent number: 6422185Abstract: A method for operating a piston-type internal-combustion engine having electromagnetic valve trains for actuating the cylinder valves, which respectively have an armature that can move back and forth between two electromagnets, counter to the force of restoring springs, with the valves being completely variably actuated by an electronic engine timing control unit. The functioning of the electromagnetic valve trains of each cylinder is detected in the engine timing control unit during operation, and when a functional failure of an electromagnetic valve train is detected at a cylinder, the electromagnet of the failed electromagnetic valve train is acted upon with a capturing current, which brings the armature into an end position at an electromagnet, and from this end position, the electromagnetic valve train is actuated for the ongoing work cycle of the cylinder.Type: GrantFiled: October 24, 2000Date of Patent: July 23, 2002Assignee: FEV Motorentechnik GmbHInventors: Markus Duesmann, Wolfgang Salber, Hans Kemper
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Patent number: 6184767Abstract: An electromagnetic actuator includes an electromagnet; and an armature movable toward the electromagnet by an electromagnetic force generated upon energization of the electromagnet. The armature is connectable to a setting member displaced as a function of armature motions. The electromagnetic actuator further has a resetting spring which opposes the electromagnetic force and which has a first end supported in a housing and a second end; and at least one jointed connecting arrangement interposed between the resetting spring and the armature for supporting the armature on the second end of the resetting spring.Type: GrantFiled: May 14, 1999Date of Patent: February 6, 2001Assignee: FEV Motorentechnik GmbHInventors: Martin Pischinger, Thomas Esch, Markus Duesmann
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Patent number: 5988124Abstract: An apparatus for reciprocating an engine valve between open and closed positions in an internal-combustion engine includes an electromagnetic actuator having first and second mutually spaced electromagnets for generating electromagnetic forces; and an armature disposed between the first and second electromagnets and movable in response to the electromagnetic forces. The armature is operatively coupled to the engine valve to cause it to reciprocate between its open and closed positions. First and second gas springs are coupled to the armature for opposing the electromagnetic forces generated by the first and second electromagnets, respectively. A pressurized gas source supplies the first and second gas springs with pressure and a control arrangement varies the pressure in the first and second gas springs. A positioning spring is coupled to the engine valve for moving the engine valve into its closed position when the first and second gas springs are in a depressurized state.Type: GrantFiled: March 15, 1999Date of Patent: November 23, 1999Assignee: FEV Motorentechnik GmbH & Co. KommanditgesellschaftInventor: Markus Duesmann