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    Hydraulic tensioner with controllable inlet pressure
    17.
    发明授权
    Hydraulic tensioner with controllable inlet pressure 有权

    公开(公告)号：US10738860B2

    公开(公告)日：2020-08-11

    申请号：US15714088

    申请日：2017-09-25

    Applicant: BorgWarner Inc.

    Inventor： Mark M. Wigsten ,  Kevin B. Todd ,  Dale N. Smith ,  Sean R. Simmons ,  Seongdo Hong

    IPC: F16H7/08

    Abstract: A pressure regulator is in fluid communication with a supply inlet of a hydraulic tensioner to actively control fluid to the inlet of the hydraulic tensioner. By actively controlling the pressure regulator based on engine conditions and thus the oil pressure being fed to the hydraulic tensioner, the oil pressure to the hydraulic tensioner may be reduced at low engine speeds, increasing the efficiency of the timing system, or allowing full oil pressure at high engine speeds and low engine temperature.

    Valve operating system providing variable valve lift and/or variable valve timing
    18.
    发明授权
    Valve operating system providing variable valve lift and/or variable valve timing 有权

    公开(公告)号：US10539051B2

    公开(公告)日：2020-01-21

    申请号：US15772993

    申请日：2016-11-03

    Applicant: BorgWarner Inc.

    Inventor： Mark M. Wigsten ,  Dale N. Smith

    IPC: F01L13/00 ,  F01L1/02 ,  F01L1/053 ,  F01L1/047

    Abstract: A valve operating system that includes a plurality of cam assemblies that are coupled for rotation about a rotary axis. Each of the cam assemblies has a control link and a first cam member. Each of the control links has a link body, which forms a majority of the control link, and that extends parallel to the rotary axis. Each of the first cam members is coupled to one of the control links for axial movement therewith along the rotary axis between first and second positions to alternate between first and second cam profiles, respectively.

    Chain or belt tensioner with a ratchet that deactivates
    20.
    发明授权
    Chain or belt tensioner with a ratchet that deactivates 有权
    带棘轮的链条或皮带张紧器，可松动

    公开(公告)号：US09267579B2

    公开(公告)日：2016-02-23

    申请号：US14096450

    申请日：2013-12-04

    Applicant: BorgWarner Inc.

    Inventor： George L. Markley ,  Simon Barrette ,  Dale N. Smith ,  Joseph P. Goodsell

    IPC: F16H7/08

    CPC classification number: F16H7/0836 ,  F16H2007/0806 ,  F16H2007/0814 ,  F16H2007/0859 ,  F16H2007/0878

    Abstract: A tensioner comprising a piston slidably received within a piston bore of the housing having a plurality of grooves formed on an outer circumference, the piston forming a first pressure chamber with the piston bore. The tensioner uses a mechanism to remove a sliding pawl or expandable clip from engaging the grooves on the piston, such that the piston can move towards the housing and reduce chain load when fluid pressure is reduced in the first pressure chamber during engine shutdown, but not so much as to leave the chain uncontrolled during engine restart. The mechanism may for example be a fluid biased spool piston which engages the expandable clip or a pawl piston that engages a sliding pawl.

    Abstract translation: 一种张紧器，包括可滑动地容纳在所述壳体的活塞孔内的活塞，所述活塞孔具有形成在外周上的多个槽，所述活塞与所述活塞孔形成第一压力室。 张紧器使用机构来移除滑动爪或可膨胀夹与接合活塞上的凹槽，使得当发动机关闭期间流体压力在第一压力室中减小时，活塞可以向壳体移动并减小链条负载，但不 在发动机重新启动期间，使链条不受控制。 该机构可以例如是与可膨胀夹或接合滑动爪的棘爪活塞接合的流体偏压卷轴活塞。

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