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公开(公告)号：US09982766B2
公开(公告)日：2018-05-29
申请号：US14889359
申请日：2014-05-06
Applicant: THYSSENKRUPP PRESTA TECCENTER AG
Inventor： Jürgen Meusel , Uwe Dietel , Bernd Mann , Michael Kunz , Martin Lehmann
CPC classification number: F16H53/02 , F01L13/0036 , F01L2001/0473 , F01L2013/0052
Abstract: The invention relates to a camshaft comprising a support shaft formed as a hollow shaft. An inner shaft is arranged concentrically in the interior of the support shaft, wherein the inner shaft is rotatable relative to the support shaft. There is arranged on the support shaft a first cam segment with a first recess for receiving the support shaft, which cam segment is rotatable with respect to the support shaft and is connected in a rotationally conjoint manner to the inner shaft via a first opening in the support shaft. The first cam segment has at least two cam contours. The connection between the inner shaft and the first cam segment is furthermore configured such that the first cam segment is axially displaceable relative to the inner shaft and to the support shaft.
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2.发明申请公开(公告)号：US20170122142A1
公开(公告)日：2017-05-04
申请号：US15318950
申请日：2015-06-17
Applicant: ThyssenKrupp Presta TecCenter AG
Inventor： Uwe Dietel , Bernd Mann , Michael Kunz , Martin Lehmann
CPC classification number: F01L1/34413 , F01L1/047 , F01L1/053 , F01L1/08 , F01L13/0057 , F01L2001/0473 , F01L2001/0476
Abstract: A camshaft for a valve drive of an internal combustion engine having a variable valve opening time may include an outer shaft and an inner shaft that extends through the outer shaft, with the inner shaft being held rotatably with respect to the outer shaft. The camshaft may further include a cam having a multiple-piece configuration, comprising a first part cam and a second part cam. Either the first part cam or the second part cam may be connected fixedly to the outer shaft so as to rotate with it, and the other part cam may be connected fixedly to the inner shaft so as to rotate with it. The camshaft may also include a bearing inner ring of a shaft bearing that is held on the outer shaft, with one of two second part cams comprising an axial attachment that forms at least one part of the bearing inner ring.
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公开(公告)号：US10309269B2
公开(公告)日：2019-06-04
申请号：US15506535
申请日：2015-08-14
Applicant: ThyssenKrupp Presta TecCenter AG
Inventor： Martin Lehmann , Michael Kunz
Abstract: A camshaft adjusting device of a drive, such as a motor vehicle drive, for example, for adjusting a phase position of a cam segment may include a camshaft and a phase shifter that is operatively connected to the camshaft. The camshaft may comprise a shaft segment including an inner shaft and an outer shaft at least partially surrounding the inner shaft. The camshaft adjusting device may further comprise a drive segment for driving the shaft segment and a cam segment that is connected in a form-fitting and/or force-fitting manner to the outer shaft. The phase shifter may comprise a rotor element and a stator element. A compensating element for compensating for part tolerances between the camshaft and the phase shifter can be disposed at least in sections between the rotor element and the drive segment.
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公开(公告)号：US09926815B2
公开(公告)日：2018-03-27
申请号：US15039534
申请日：2014-11-27
Applicant: THYSSENKRUPP PRESTA TECCENTER AG
Inventor： Martin Lehmann , Bernd Mann , Michael Kunz , Uwe Dietel , Jürgen Meusel , Manfred Muster , Markus Niederlechner , Marko Curlic
CPC classification number: F01L1/047 , F01L1/34 , F01L1/34413 , F01L2001/0473 , F01L2001/0476
Abstract: An adjustable camshaft for a valve drive of an internal combustion engine may include an inner shaft extending through an outer shaft with a cam element disposed on the outer shaft. The cam element may be connected rotationally conjointly to the inner shaft. The cam element may have a shaft passage with an internal bearing surface, which, together with a bearing surface on an outer side of the outer shaft, forms a plain bearing arrangement for the rotatable arrangement of the cam element on the outer shaft. The bearing surface on the outer side of the outer shaft and/or the internal bearing surface of the shaft passage of the cam element may include one or more sections with a spherical shape.
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5.发明申请公开(公告)号：US20170183981A1
公开(公告)日：2017-06-29
申请号：US15314444
申请日：2015-04-30
Applicant: ThyssenKrupp Presta TecCenter AG
Inventor： Marcel Weidauer , Bernd Mann , Uwe Dietel , Juergen Meusel , Michael Kunz , Martin Lehmann
CPC classification number: F01L1/047 , F01L1/3442 , F01L2001/0471 , F01L2001/0473 , F01L2001/0475
Abstract: An adjustable camshaft may include an outer shaft that is hollow and an inner shaft received in the outer shaft and rotatable in the outer shaft. The inner shaft may include a cavity into which oil can be applied. At least a first radial opening may be configured in the outer shaft and at least a second radial opening may be configured in the inner shaft. Thus oil can flow between the cavity and an outside of the outer shaft during overlap of the first radial opening and the second radial opening. The first radial opening on an inside of the outer shaft may have a greater cross-section than on the outside of the outer shaft.
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Patent Agency Ranking
公开(公告)号：US10683781B2
公开(公告)日：2020-06-16
申请号：US15752328
申请日：2016-07-29
Applicant: THYSSENKRUPP PRESTA TECCENTER AG , thyssenkrupp AG
Inventor： Michael Kunz , Bernd Mann , Uwe Dietel , Martin Lehmann
Abstract: An adjustable camshaft for a valve train of an internal combustion engine may include an inner shaft that is rotatable in an outer shaft, a phase shifter by which the outer shaft and/or the inner shaft are/is adjustable in a phase position formed around an axis of rotation, and a bearing portion for bearing the camshaft, via which the phase shifter can be supplied with a pressurizing medium. The inner shaft may comprise an end on which a screw flange is arranged, and a rotor of the phase shifter may be connected to the screw flange. A free end of the inner shaft comprises a duct that coincides with the axis of rotation for at least partially supplying the phase shifter with a pressurizing medium. The duct may extend at least into the bearing portion.
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公开(公告)号：US10208632B2
公开(公告)日：2019-02-19
申请号：US15314444
申请日：2015-04-30
Applicant: ThyssenKrupp Presta TecCenter AG
Inventor： Marcel Weidauer , Bernd Mann , Uwe Dietel , Juergen Meusel , Michael Kunz , Martin Lehmann
Abstract: An adjustable camshaft may include an outer shaft that is hollow and an inner shaft received in the outer shaft and rotatable in the outer shaft. The inner shaft may include a cavity into which oil can be applied. At least a first radial opening may be configured in the outer shaft and at least a second radial opening may be configured in the inner shaft. Thus oil can flow between the cavity and an outside of the outer shaft during overlap of the first radial opening and the second radial opening. The first radial opening on an inside of the outer shaft may have a greater cross-section than on the outside of the outer shaft.
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公开(公告)号：US10358949B2
公开(公告)日：2019-07-23
申请号：US15310711
申请日：2015-04-14
Applicant: ThyssenKrupp Presta TecCenter AG
Inventor： Michael Kunz , Martin Lehmann
Abstract: A camshaft may have a bearing shaft configured as a hollow shaft in which an inner shaft is disposed concentrically relative to the bearing shaft. The inner shaft may be twistable relative to the bearing shaft. A first cam segment having a first recess for receiving the bearing shaft may be disposed on the bearing shaft, may be rotatable relative to the bearing shaft, and may be connected in a rotationally fixed and axially fixed manner to the inner shaft. A second cam segment having a second recess for receiving the bearing shaft may be disposed on the bearing shaft. The second cam segment may have at least two cam contours and may be fastened on the bearing shaft so that the second cam segment is rotationally fixed to the bearing shaft and arranged in an axially displaceable manner on the bearing shaft.
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9.发明授权公开(公告)号：US10316705B2
公开(公告)日：2019-06-11
申请号：US15318950
申请日：2015-06-17
Applicant: ThyssenKrupp Presta TecCenter AG
Inventor： Uwe Dietel , Bernd Mann , Michael Kunz , Martin Lehmann
Abstract: A camshaft for a valve drive of an internal combustion engine having a variable valve opening time may include an outer shaft and an inner shaft that extends through the outer shaft, with the inner shaft being held rotatably with respect to the outer shaft. The camshaft may further include a cam having a multiple-piece configuration, comprising a first part cam and a second part cam. Either the first part cam or the second part cam may be connected fixedly to the outer shaft so as to rotate with it, and the other part cam may be connected fixedly to the inner shaft so as to rotate with it. The camshaft may also include a bearing inner ring of a shaft bearing that is held on the outer shaft, with one of two second part cams comprising an axial attachment that forms at least one part of the bearing inner ring.
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公开(公告)号：US10132202B2
公开(公告)日：2018-11-20
申请号：US14901158
申请日：2014-06-24
Applicant: THYSSENKRUPP PRESTA TECCENTER AG
Inventor： Bernd Mann , Uwe Dietel , Michael Kunz , Jürgen Meusel , Martin Lehmann
IPC: F01L1/047
Abstract: An adjustable camshaft can be used in valve drives of internal combustion engines, amongst other places. The adjustable camshaft may include an outer shaft and an inner shaft that is concentric with and rotatably supported in the outer shaft. A cam having a cam bore may be rotatably supported on an outer surface of the outer shaft so as to form a slide bearing gap between the cam and the outer shaft. The cam may be rotatably-fixed to the inner shaft so that the inner shaft and the cam rotate with one another. Furthermore, the adjustable camshaft may include an oil channeling groove disposed beneath the cam in the outer surface of the outer shaft. In many cases, at least one side of the oil channeling groove may be exposed such that it extends beyond the slide bearing gap and the cam.
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