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公开(公告)号：US10570818B2
公开(公告)日：2020-02-25
申请号：US15737423
申请日：2016-06-20
Applicant: AVL LIST GMBH
Inventor： Helmut Melde-Tuczai , Stefan Lichtenegger , Gerhard Heimel , Bernhard Hoedl
IPC: F02B75/04 , F16K11/18 , F16K11/048 , F16K11/056 , F02D15/02 , F16C7/06 , F16C7/04
Abstract: A length-adjustable connecting rod has a first rod part and a second rod part, with the rod parts being displaceable telescopically toward and/or in one another by means of a length-adjusting means, and with the length-adjusting means being chargeable via a hydraulic channel with a hydraulic medium. The hydraulic channel is fluidly connectable by means of a control device to a hydraulic medium supply channel. The control device has a first and a second valve, each with a valve chamber and each with a valve body that can be pressed by a restorative force against a valve seat. The valve chamber of the first valve is fluidly connected to a first hydraulic channel, and the second valve chamber of the second valve to a second hydraulic channel. The valve bodies are operatively interconnected via a connecting device that can be displaced between a first position and a second position.
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公开(公告)号：US20140366834A1
公开(公告)日：2014-12-18
申请号：US14367993
申请日：2012-12-13
Applicant: AVL LIST GmbH
Inventor： Helmut Melde-Tuczai
CPC classification number: F16C7/06 , F02B75/045 , F02B75/32 , F16C7/04 , F16C2360/22
Abstract: A length-adjustable connecting rod for a reciprocating-piston engine. At least one first rod part and second rod part are telescopically displaceable relative to and/or into one another. The second rod part forms a guide cylinder and the first rod part forms a piston element which is longitudinally displaceable in the guide cylinder. Between the first and second rod parts is a high-pressure chamber into which at least one first oil duct opens. At least one control valve is arranged in the first oil duct, with an actuator thereof to be displaced into a first position by a spring and into a second position by oil pressure against the force of the spring. To permit adjustment of the compression ratio, a second oil duct formed as a feed duct opens into the high-pressure chamber and in which a check valve is arranged which opens in the direction of the high-pressure chamber.
Abstract translation: 用于往复活塞发动机的长度可调的连杆。 至少一个第一杆部分和第二杆部分可相对于彼此和/或彼此可伸缩地移位。 第二杆部分形成引导圆筒，第一杆部分形成可在引导筒中纵向移位的活塞元件。 第一和第二杆部分之间是至少一个第一油管打开的高压室。 至少一个控制阀布置在第一油道中，其致动器通过弹簧移动到第一位置，并通过抵抗弹簧的力的油压进入第二位置。 为了允许压缩比的调节，形成为进料管的第二油道通向高压室，并且其中设置有在高压室的方向上开口的止回阀。
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公开(公告)号：US11066988B2
公开(公告)日：2021-07-20
申请号：US16338382
申请日：2017-09-29
Applicant: AVL LIST GMBH , IWIS MOTORSYSTEME GMBH & CO. KG
Inventor： Helmut Melde-Tuczai , Abdelkarim Redouane , Siegfried Hartwig
IPC: F02B75/04 , F02D15/02 , F16K31/122 , F16C7/04 , F15B15/12 , F16C7/06 , F15B21/041 , F01B31/14
Abstract: A length-adjustable connecting rod for a reciprocating piston machine, which may be a reciprocating piston internal combustion engine, is disclosed as well as a reciprocating piston machine and a vehicle. The connecting rod comprises a hydraulic length-adjusting device for adjusting an effective connecting rod length and a control device that can switch between two switching states, for controlling the length-adjusting device. The length-adjusting device comprises a hydraulic cylinder with a piston and a first hydraulic working chamber and a second hydraulic working chamber, the control device comprising a first valve and a second valve, the first valve of the control device being connected to the first hydraulic working chamber of the length-adjusting device in a fluid-communicating manner, and the second valve to the second hydraulic working chamber, the first valve and the second valve each being actuatable by means of a hydraulically actuatable adjusting piston that can axially move along an adjusting axis, the adjusting axis of the first valve being different from the adjusting axis of the second valve.
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公开(公告)号：US09528546B2
公开(公告)日：2016-12-27
申请号：US14367993
申请日：2012-12-13
Applicant: AVL LIST GmbH
Inventor： Helmut Melde-Tuczai
CPC classification number: F16C7/06 , F02B75/045 , F02B75/32 , F16C7/04 , F16C2360/22
Abstract: A length-adjustable connecting rod for a reciprocating-piston engine. At least one first rod part and second rod part are telescopically displaceable relative to and/or into one another. The second rod part forms a guide cylinder and the first rod part forms a piston element which is longitudinally displaceable in the guide cylinder. Between the first and second rod parts is a high-pressure chamber into which at least one first oil duct opens. At least one control valve is arranged in the first oil duct, with an actuator thereof to be displaced into a first position by a spring and into a second position by oil pressure against the force of the spring. To permit adjustment of the compression ratio, a second oil duct formed as a feed duct opens into the high-pressure chamber and in which a check valve is arranged which opens in the direction of the high-pressure chamber.
Abstract translation: 用于往复活塞发动机的长度可调的连杆。 至少一个第一杆部分和第二杆部分可相对于彼此和/或彼此可伸缩地移位。 第二杆部分形成引导圆筒，第一杆部分形成可在引导筒中纵向移位的活塞元件。 第一和第二杆部分之间是至少一个第一油管打开的高压室。 至少一个控制阀布置在第一油道中，其致动器通过弹簧移动到第一位置，并通过抵抗弹簧的力的油压进入第二位置。 为了允许压缩比的调节，形成为进料管的第二油道通向高压室，并且其中设置有在高压室的方向上开口的止回阀。
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公开(公告)号：US11199130B2
公开(公告)日：2021-12-14
申请号：US16306028
申请日：2016-08-12
Applicant: AVL LIST GMBH
Inventor： Helmut Melde-Tuczai , Mario Theissl , Siegfried Loesch , Florian Bodensteiner , Anamaria Munteanu , Miroslaw Robaczewski , Katrin Wand , Abdelkarim Redouane
Abstract: The invention relates to a longitudinally adjustable connecting rod (7) for a reciprocating piston engine, in particular a reciprocating piston internal combustion engine, a reciprocating piston engine, and a vehicle comprising a reciprocating piston engine. The longitudinally adjustable connecting rod (7) comprises a longitudinal adjusting mechanism (8) for adjusting an effective length (L) of the connecting rod, a hydraulically actuated control device (12), switchable at least between two control modes, for controlling the longitudinal adjustment, and an electromagnetically actuated hydraulic switching valve (9) for hydraulically actuating the control device (12).
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Patent Agency Ranking
公开(公告)号：US10400637B2
公开(公告)日：2019-09-03
申请号：US15760103
申请日：2016-09-19
Applicant: AVL LIST GMBH
Inventor： Christian Hubmann , Helmut Melde-Tuczai
Abstract: The invention relates to a variable valve control device (1) for internal combustion engines of the reciprocating-piston design having at least one gas exchange valve, which can be actuated by a camshaft (3) by means of a cam device (4) that is connected to the camshaft (3) for conjoint rotation and that has at least two different cam tracks (7, 8), which camshaft is supported in such a way that the camshaft can be rotated about a camshaft axis (2), wherein, selectively, one of the cam tracks (7, 8) can be activated and at least one other cam track (8, 7) can be deactivated by means of a control device (10), and wherein the control device (10) has at least one control element (11), which is guided axially, in particular within the camshaft, and by which at least one cam device (4) that is supported on the camshaft (3) for conjoint rotation but axially movably and that has at least two different cam tracks (7, 8) can be adjusted by means of at least one driving piece (12). In order to enable reliable and fail-safe variable valve actuation in the simplest possible manner, at least one blocking element (20) is provided for blocking and releasing the axial adjustment motion of the cam device (4), wherein the blocking element (20) has a control stud (21) fixedly connected to the cam device (4) and a—preferably stationary—control disk (22) arranged coaxial to the camshaft (3), wherein the control disk (22) has, in at least one angular region, at least one control opening (25) for receiving the control stud (21).
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公开(公告)号：US20180320731A1
公开(公告)日：2018-11-08
申请号：US15771283
申请日：2016-11-07
Applicant: AVL LIST GMBH
Inventor： Helmut Melde-Tuczai , Siegfried Hartwig
CPC classification number: F16C7/06 , F02B75/045 , F15B15/14
Abstract: The invention relates to a length-adjustable connecting rod (1) for a reciprocating piston machine, comprising at least one first rod part (2) with a small connecting rod eye (3) and at least one second rod part (4) with a large connecting rod eye (5), both rod parts (2, 4) being movable in relation to each other or inside each other in a telescoping manner. The second rod part (4) comprises a guide cylinder (8) and the first rod part (2) is securely connected to a piston element (7) that can move longitudinally in the guide cylinder (8), a first high-pressure chamber (10) being mounted on a first side of the piston element (7) between the second rod part (4) and the piston element (7), and a second high-pressure chamber (12) being mounted on a second side of the piston element (7), at least one sealing element (22, 24) being provided for sealing at least one high-pressure chamber (10, 12). The aim of the invention is to allow a wear-resistant seal between the two rod parts (2, 4) as easily, compactly and reliably as possible. To this end, the piston element (7) is non-positively connected to the first rod part (2) by means of an interference fit (30) in a interference-fit region (30a).
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公开(公告)号：US09670952B2
公开(公告)日：2017-06-06
申请号：US14412310
申请日：2013-07-01
Applicant: AVL LIST GMBH
Inventor： Helmut Melde-Tuczai , Bernhard Hoedl , Andreas Zurk , Wolfgang Schoeffmann
CPC classification number: F16C7/06 , F02B75/045 , F16C2360/22 , Y10T74/2151
Abstract: The invention relates to a length-adjustable con rod (1) for a reciprocating piston engine, particularly an internal combustion engine, having at least a first and a second rod part (2, 4), wherein the two rod parts (2, 4) can be pushed together and/or inside one another in a telescoping manner, wherein the second rod part (4) forms a guide cylinder (4a) and the first rod part (2) a piston element (3) which can be pushed longitudinally in the guide cylinder (4a), wherein a high-pressure chamber (4b), into which at least one oil channel (10) opens, is clamped between the first and the second rod parts (2, 4). To enable the compression ratio to be adjusted in the simplest and most reliable manner possible, according to the invention the two rod parts (2, 4) can be fixed, by a locking device (32), relative to one another in at least one position, preferably corresponding to a minimum length of the con rod (1).
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公开(公告)号：US11486299B2
公开(公告)日：2022-11-01
申请号：US17283233
申请日：2019-10-08
Applicant: IWIS MOTORSYSTEME GMBH & CO. KG , AVL LIST GMBH
Inventor： Malte Heller , Kai Arens , Zoltán Riba , Martin Bodensteiner , Steffen Latz , Bernhard Kometter , Helmut Melde-Tuczai
IPC: F02B75/04
Abstract: A longitudinally adjustable connecting rod for a piston engine, where the connecting rod includes a first connecting rod end for receiving a piston pin and a second connecting rod end for receiving a crankshaft journal, where the distance between the piston pin and the crankshaft journal is adjustable in the longitudinal direction (A) of the connecting rod by way of a hydraulic control device with a hydraulic control valve. The hydraulic control valve comprises a control cylinder and a control slide which is guided in a slidable manner in the control cylinder and which can be pressurized, and at least one outlet valve which can be actuated by the control slide. The control slide comprises a control piston which is arranged on the end face, with a control pressure surface which can be subjected to the hydraulic control pressure and which defines a control pressure chamber in the control cylinder. The use of such a longitudinally adjustable connecting rod with a hydraulic control device in a piston engine as well as a corresponding piston engine is also provided.
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公开(公告)号：US10954849B2
公开(公告)日：2021-03-23
申请号：US16062217
申请日：2016-08-10
Applicant: AVL LIST GMBH
Inventor： Helmut Melde-Tuczai , Mario Theissl , Siegfried Loesch , Abdelkarim Redouane , Florian Bodensteiner , Anamaria Munteanu , Miroslaw Robaczewski , Katrin Wand
Abstract: The invention relates to a length-adjustable connecting rod for a reciprocating piston engine, particularly a reciprocating piston internal combustion engine, comprising a hydraulic arrangement with which a length of the connecting rod can be adjusted, and a switching valve for controlling the inflow and outflow of a hydraulic medium into or out of the hydraulic arrangement, wherein the switching valve can be actuated electromagnetically.
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