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    HYDRAULIC SUPPORT ELEMENT WITH A RING FILTER
    79.
    发明申请
    HYDRAULIC SUPPORT ELEMENT WITH A RING FILTER 审中-公开

    公开(公告)号：US20180355768A1

    公开(公告)日：2018-12-13

    申请号：US15992739

    申请日：2018-05-30

    Applicant: Schaeffler Technologies AG & Co. KG

    Inventor： Andreas Biermann ,  Matthias Ammann

    IPC: F01L1/46 ,  F01L1/245 ,  F01L1/14

    CPC classification number: F01L1/46 ,  F01L1/143 ,  F01L1/146 ,  F01L1/185 ,  F01L1/24 ,  F01L1/2405 ,  F01L1/245 ,  F01L2001/186 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2810/05

    Abstract: A hydraulic support element for a variable valve train of an internal combustion engine, which has a cylindrical pot-shaped housing and a hollow cylindrical piston guided for movement in this housing and whose inner end is supported by a compression spring on the base wall of the housing. The outer end extends past the housing and is formed as a hemispherical bearing head. The interior is divided into an inner supply pressure space and an outer switching pressure space that are connected by inlet openings in the cylindrical side walls of the housing and the piston with a cylinder head side supply pressure line and by a non-return valve to a high-pressure space enclosed between the inner end of the piston and the base wall of the housing, or to a cylinder head side switching pressure line and also by a central hole formed in the bearing head to a rocker arm side switching pressure channel. To prevent the entry of harmful particles into the supply pressure space and/or the switching pressure space of the piston, the piston has a ring-shaped recess in its cylindrical side wall in the area of the inlet openings on the outside in the radial direction, and a filter element constructed as a ring filter is inserted into the ring-shaped recess of the piston with an axial positive-fit connection.

    LASH COMPENSATOR SPRING END CAP
    80.
    发明申请
    LASH COMPENSATOR SPRING END CAP 审中-公开

    公开(公告)号：US20180195420A1

    公开(公告)日：2018-07-12

    申请号：US15402576

    申请日：2017-01-10

    Applicant: Schaeffler Technologies AG & Co. KG

    Inventor： John Stallmann

    IPC: F01L1/24 ,  F01L1/245 ,  F01L1/46

    CPC classification number: F01L1/2416 ,  F01L1/08 ,  F01L1/143 ,  F01L1/146 ,  F01L1/2405 ,  F01L1/2422 ,  F01L1/245 ,  F01L9/023 ,  F01L13/065 ,  F01L2101/00 ,  F01L2105/00

    Abstract: A lash compensator for a valve train component of an internal combustion engine is provided that includes an end-cap arranged within a reverse-spring control valve assembly of an axially moveable piston. The piston has a first reservoir and an inner radial wall configured with a through-aperture. The reverse-spring control valve assembly has a control valve housing, a bias spring, an end-cap, and a closing body. The end-cap is configured with a cupped end; an inner side of the cupped end receives a second lower end of the bias spring, and an outer side of the cupped end engages an upper portion of the closing body. The end-cap minimizes or eliminates the variation in flow resistance caused by a variation in end-coil geometry of the second lower end of the bias spring.

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