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.

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

IPC: F02B75/04 ,  F16C7/06

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).

公开(公告)号：US10294859B2

公开(公告)日：2019-05-21

申请号：US15028638

申请日：2014-10-13

Applicant: AVL LIST GMBH

Inventor： Helmut Melde-Tuczai ,  Stefan Lichtenegger ,  Bernhard Hoedl

IPC: F02B75/04 ,  F16C7/06 ,  F02F1/00 ,  F02F3/00

Abstract: The invention relates to a length-adjustable connecting rod (1) for a reciprocating-piston machine, in particular for an internal combustion engine, comprising at least one first rod part (6) having a small connecting rod eye (2) and a second rod part (9) having a large connecting rod eye (4), which two rod parts can be moved in relation to each other and/or in each other in a telescopic manner, wherein the second rod part forms a guiding cylinder (8) and the first rod part forms a piston element (7) that can be longitudinally displaced in the guiding cylinder, wherein a first high-pressure chamber (10) is spanned between the second rod part and the piston element on the side of the piston element facing the large connecting rod eye, into which first high-pressure chamber at least one first oil channel (20) leads, in which in particular a first check valve (21) opening in the direction of the first high-pressure chamber is arranged, wherein at least a first return channel (22) extends from the first high-pressure chamber, an outflow cross-section of which return channel can be closed by a control valve (13) in a first position and can be opened by the control valve in a second position, wherein the control valve preferably has a control piston (15) that can be axially displaced in an accommodating bore (14) of the second rod part of the connecting rod, which control piston in particular can be moved into the first position by means of a return spring (16) and can be moved into the second position against the force of the return spring by means of an actuating force. In order to be able to change the compression ratio as simply possible, the piston element according to the invention is designed as a piston that is operative at both ends.

公开(公告)号：US20160237889A1

公开(公告)日：2016-08-18

申请号：US15028638

申请日：2014-10-13

Applicant: AVL LIST GMBH

Inventor： Helmut Melde-Tuczai ,  Stefan Lichtenegger ,  Bernhard Hoedl

IPC: F02B75/04 ,  F02F3/00 ,  F02F1/00 ,  F16C7/06

CPC classification number: F02B75/045 ,  F02F1/00 ,  F02F3/00 ,  F16C7/04 ,  F16C7/06 ,  F16C2360/22

Abstract: The invention relates to a length-adjustable connecting rod (1) for a reciprocating-piston machine, in particular for an internal combustion engine, comprising at least one first rod part (6) having a small connecting rod eye (2) and a second rod part (9) having a large connecting rod eye (4), which two rod parts can be moved in relation to each other and/or in each other in a telescopic manner, wherein the second rod part forms a guiding cylinder (8) and the first rod part forms a piston element (7) that can be longitudinally displaced in the guiding cylinder, wherein a first high-pressure chamber (10) is spanned between the second rod part and the piston element on the side of the piston element facing the large connecting rod eye, into which first high-pressure chamber at least one first oil channel (20) leads, in which in particular a first check valve (21) opening in the direction of the first high-pressure chamber is arranged, wherein at least a first return channel (22) extends from the first high-pressure chamber, an outflow cross-section of which return channel can be closed by a control valve (13) in a first position and can be opened by the control valve in a second position, wherein the control valve preferably has a control piston (15) that can be axially displaced in an accommodating bore (14) of the second rod part of the connecting rod, which control piston in particular can be moved into the first position by means of a return spring (16) and can be moved into the second position against the force of the return spring by means of an actuating force. In order to be able to change the compression ratio as simply possible, the piston element according to the invention is designed as a piston that is operative at both ends.

Abstract translation: 本发明涉及一种用于往复活塞机械的长度可调的连杆（1），特别是用于内燃机，包括至少一个具有小连杆眼（2）的第一杆部分（6）和第二 具有大连杆眼（4）的杆部（9），其中两个杆部分可以相对于彼此和/或彼此以伸缩方式移动，其中第二杆部分形成引导缸（8） 并且所述第一杆部分形成可以在所述引导筒中纵向移位的活塞元件（7），其中在所述第二杆部分和所述活塞元件之间跨越所述活塞元件侧的第一高压室（10） 面对大连杆眼，其中至少一个第一油通道（20）引导的第一高压腔室中，其中布置有特别是在第一高压腔室的方向上开口的第一止回阀（21） 其中至少第一返回通道（22）延伸 从第一高压室流出横截面，其返回通道可以由控制阀（13）在第一位置关闭，并且可以由控制阀在第二位置打开，其中控制阀优选地具有 可以在连杆的第二杆部分的容纳孔（14）中轴向移位的控制活塞（15），其特别地控制活塞可通过复位弹簧（16）移动到第一位置，并且 可以通过致动力抵抗复位弹簧的力而移动到第二位置。 为了能够简单地改变压缩比，根据本发明的活塞元件被设计为在两端操作的活塞。

公开(公告)号：US20150122077A1

公开(公告)日：2015-05-07

申请号：US14412310

申请日：2013-07-01

Applicant: AVL LIST GMBH

Inventor： Helmut Melde-Tuczai ,  Bernhard Hoedl ,  Andreas Zurk ,  Wolfgang Schoeffmann

IPC: F16C7/06

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).

Abstract translation: 本发明涉及一种用于往复式活塞发动机，特别是内燃机的长度可调整杆（1），其具有至少第一和第二杆部分（2,4），其中两个杆部分（2,4） ）可以以可伸缩的方式被推在一起和/或彼此内部，其中第二杆部分（4）形成导向缸（4a），并且第一杆部分（2）形成可纵向推动的活塞元件（3） 在引导缸（4a）中，其中至少一个油通道（10）打开的高压室（4b）被夹在第一和第二杆部件（2,4）之间。 为了使压缩比能够以最简单和最可靠的方式进行调节，根据本发明，两个杆部件2,4可以通过锁定装置（32）相对于彼此在至少一个 位置，优选地对应于杆（1）的最小长度。