Length-Adjustable Connecting Rod
    2.
    发明申请

    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

    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).

    Length-adjustable connecting rod with control device

    公开(公告)号:US11066988B2

    公开(公告)日:2021-07-20

    申请号:US16338382

    申请日:2017-09-29

    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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