Patents by Inventor Markus Lengfeld
Markus Lengfeld 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: 11047269Abstract: A valve train device, in particular for an internal combustion engine, includes a support element secured to a housing, at least one axially moveable cam unit associated with a valve, and at least one switch unit for axially moving at least one part of the cam unit having at least one displacement body which is provided to be introduced for axial movement at least functionally between the support element and the cam unit. The cam unit has at least three cam paths.Type: GrantFiled: September 20, 2017Date of Patent: June 29, 2021Assignee: Daimler AGInventors: Alexander Von Gaisberg-Helfenberg, Markus Lengfeld, Jens Meintschel, Thomas Stolk
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Publication number: 20200116050Abstract: A valve train device, in particular for an internal combustion engine, includes a support element secured to a housing, at least one axially moveable cam unit associated with a valve, and at least one switch unit for axially moving at least one part of the cam unit having at least one displacement body which is provided to be introduced for axial movement at least functionally between the support element and the cam unit. The cam unit has at least three cam paths.Type: ApplicationFiled: September 20, 2017Publication date: April 16, 2020Applicant: Daimler AGInventors: Alexander VON GAISBERG-HELFENBERG, Markus LENGFELD, Jens MEINTSCHEL, Thomas STOLK
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Patent number: 10344633Abstract: An adjusting device, in particular for adjustment of a camshaft of an internal combustion engine, is disclosed. The adjusting device includes a brake unit which has at least one brake disc and at least one electromagnet for actuating the brake unit. The electromagnet has a yoke and an armature formed separately from the brake disc, where the brake disc is disposed at least partially spatially between the yoke and the armature of the electromagnet.Type: GrantFiled: March 15, 2014Date of Patent: July 9, 2019Assignee: Daimler AGInventors: Alexander Gaisberg-Helfenberg, Markus Lengfeld, Jens Meintschel, Thomas Stolk
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Patent number: 9759099Abstract: In a valve drive train device for an internal combustion engine of motor vehicle, wherein at least one axially movably mounted cam element including at least one cam set with at least two cam parts and a shifting gate with at least two gate track for converting a rotary movement of the cam element into an axial shifting motion, at least one of the cam parts and the adjacent gate track are disposed in an at least partially axially overlapping relationship for reducing thereby the axial length and the mass of the cam element or permitting the use of a larger, highly durable, actuating mechanism.Type: GrantFiled: September 26, 2015Date of Patent: September 12, 2017Assignee: DAIMLER AGInventors: Markus Lengfeld, Jens Meintschel, Thomas Stolk, Alexander Von Gaisberg-Helfenberg
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Publication number: 20160069228Abstract: An adjusting device, in particular for adjustment of a camshaft of an internal combustion engine, is disclosed. The adjusting device includes a brake unit which has at least one brake disc and at least one electromagnet for actuating the brake unit. The electromagnet has a yoke and an armature formed separately from the brake disc, where the brake disc is disposed at least partially spatially between the yoke and the armature of the electromagnet.Type: ApplicationFiled: March 15, 2014Publication date: March 10, 2016Applicant: Daimler AGInventors: Alexander GAISBERG-HELFENBERG, Markus LENGFELD, Jens MEINTSCHEL, Thomas STOLK
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Publication number: 20160017763Abstract: In a valve drive train device for an internal combustion engine of motor vehicle, wherein at least one axially movably mounted cam element including at least one cam set with at least two cam parts and a shifting gate with at least two gate track for converting a rotary movement of the cam element into an axial shifting motion, at least one of the cam parts and the adjacent gate track are disposed in an at least partially axially overlapping relationship for reducing thereby the axial length and the mass of the cam element or permitting the use of a larger, highly durable, actuating mechanism.Type: ApplicationFiled: September 26, 2015Publication date: January 21, 2016Applicant: DAIMLER AGInventors: Markus LENGFELD, Jens MEINTSCHEL, Thomas STOLK, Alexander VON GAISBERG-HELFENBERG
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Patent number: 8893674Abstract: In a valve train device, particularly of an internal combustion engine, which device has an actuating device for displacing at least one axially displaceable cam element and a cam element shifting gate for axially displacing the cam element and furthermore at least one switch unit with a switch element and an actuator for operating the switch element so as to engage the cam element shifting gate at least in one switching position and to move the switch element into a desired switching position, the cam element shifting gate has at least one intermediate segment for terminating a switching action.Type: GrantFiled: November 5, 2010Date of Patent: November 25, 2014Assignee: Daimler AGInventors: Markus Lengfeld, Jens Meintschel, Thomas Stolk, Alexander von Gaisberg-Helfenberg
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Patent number: 8813701Abstract: In a phase adjustment device for a valve drive mechanism of an internal combustion engine, in particular a camshaft adjustment device, with a phase adjustment unit which, for adjusting a phase position in a normal operating mode, comprises a coupling unit for controlling an adjustment gear element by applying a braking force, and with a failsafe adjustment arrangement for setting a defined fail-safe phase position in a fail-safe operating mode, the adjustment unit includes mechanical means for varying the braking force of the coupling unit of the phase adjustment unit for setting the phase angle to a controllable failsafe phase angle position.Type: GrantFiled: April 16, 2011Date of Patent: August 26, 2014Assignee: Daimler AGInventors: Markus Lengfeld, Thomas Stolk, Alexander von Gaisberg-Helfenberg
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Publication number: 20140026861Abstract: An internal combustion engine for a motor vehicle, having at least one adjusting device by means of which at least one compression ratio of the internal combustion engine is variably settable. At least one detection device is provided by means of which at least one signal (20, 22) which characterizes an actuation effort for setting the compression ratio is detectable. The invention further relates to a method for checking an adjusting device of such an internal combustion engine.Type: ApplicationFiled: December 8, 2011Publication date: January 30, 2014Applicant: DAIMLER AGInventors: Martin Bechtold, Jochen Betsch, Klaus Fieweger, Gerd Kroener, Markus Lengfeld, Alexander Scheindlin, Dietmar Schroeer, Georg Seidel
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Publication number: 20130055976Abstract: In a phase adjustment device for a valve drive mechanism of an internal combustion engine, in particular a camshaft adjustment device, with a phase adjustment unit which, for adjusting a phase position in a normal operating mode, comprises a coupling unit for controlling an adjustment gear element by applying a braking force, and with a failsafe adjustment arrangement for setting a defined fail-safe phase position in a fail-safe operating mode, the adjustment unit includes mechanical means for varying the braking force of the coupling unit of the phase adjustment unit for setting the phase angle to a controllable failsafe phase angle position.Type: ApplicationFiled: April 16, 2011Publication date: March 7, 2013Inventors: Markus Lengfeld, Thomas Stolk, Alexander von Gaisberg-Helfenberg
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Patent number: 8307794Abstract: In an internal combustion engine valve drive switching device with a switching unit, the switching unit includes an implementation unit for implementing a first switching process based on at least one signal and thereafter, to implement a second switching process independently of an electronic evaluation.Type: GrantFiled: February 8, 2010Date of Patent: November 13, 2012Assignee: Daimler AGInventors: Markus Lengfeld, Jens Meintschel, Thomas Stolk, Alexander von Gaisberg-Helfenberg
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Patent number: 8235011Abstract: In an actuating device with at least one electrical or electromagnetic actuation unit, at least two activation sequences performed by different actuation elements of the actuation unit are associated with at least two different electrical and/or electromagnetic states of the actuation unit via electric coil units energized by current flowing in different flow directions.Type: GrantFiled: February 5, 2010Date of Patent: August 7, 2012Assignee: Daimler AGInventors: Markus Lengfeld, Jens Meintschel, Thomas Stolk, Martin Ströer, Alexander von Gaisberg-Helfenberg
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Publication number: 20110079191Abstract: In a valve train device, particularly of an internal combustion engine, which device has an actuating device for displacing at least one axially displaceable cam element and a gear shifting gate for axially displacing the cam element and furthermore at least one switch unit with a switch element and an actuator for operating the switch element so as to engage the gear shifting gate at least in one switching position and to move the switch element into a desired switching position, the gear shifting gate has at least one intermediate segment for terminating a switching action.Type: ApplicationFiled: November 5, 2010Publication date: April 7, 2011Inventors: Markus Lengfeld, Jens Meintschel, Thomas Stolk, Alexander von Gaisberg-Helfenberg
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Publication number: 20100237264Abstract: In a valve operating mechanism of an internal combustion engine, with an actuation device including at least two shifting elements which are driven by actuators for engaging a shifting gate of a cam control element, a safety device is provided to prevent the shifting elements from being deployed simultaneously.Type: ApplicationFiled: April 30, 2010Publication date: September 23, 2010Inventors: Markus Lengfeld, Jens Meintschel, Thomas Stolk, Alexander Von Gaisberg-Helfenberg
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Publication number: 20100199935Abstract: In an internal combustion engine valve drive switching device with a switching unit, the switching unit includes an implementation unit for implementing a first switching process based on at least one signal and thereafter, to implement a second switching process independently of an electronic evaluation.Type: ApplicationFiled: February 8, 2010Publication date: August 12, 2010Inventors: Markus Lengfeld, Jens Meintschel, Thomas Stolk, Alexander von Gaisberg-Helfenberg
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Publication number: 20100180850Abstract: In an actuating device with at least one electrical or electromagnetic actuation unit, at least two activation sequences performed by different actuation elements of the actuation unit are associated with at least two different electrical and/or electromagnetic states of the actuation unit via electric coil units energized by current flowing in different flow directions.Type: ApplicationFiled: February 5, 2010Publication date: July 22, 2010Inventors: Markus Lengfeld, Jens Meintschel, Thomas Stolk, Martin Ströer, Alexander von Gaisberg-Helfenberg