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    PISTON FOR A HEAT ENGINE, HEAT ENGINE COMPRISING SUCH A PISTON, AND METHODS
    1.
    发明申请
    PISTON FOR A HEAT ENGINE, HEAT ENGINE COMPRISING SUCH A PISTON, AND METHODS 有权

    公开(公告)号：US20210123395A1

    公开(公告)日：2021-04-29

    申请号：US16477232

    申请日：2018-01-10

    Applicant: H.E.F.

    Inventor： Fabrice PROST ,  Christophe HEAU ,  Romain MONTELIMARD

    IPC: F02F3/00 ,  F16J1/02 ,  F16J9/00

    Abstract: Various implementations include a combustion engine piston, including a skirt in a counter-part and including a first contact area of the piston in the counter-part, a head which extends transverse to a central axis, and a ring carrier which comprises at least two lands and at least two grooves for receiving the rings, including a first land adjoining the head and a second land situated between the first land and the skirt, wherein the lands include at least one contact land having a diameter greater than a minimum diameter of the skirt to form a second contact area of the piston in the counter-part, and wherein at least one contact land comprises a friction-reducing surface coating, formed at least on a radial sector covering an angle of at least 30 degrees, and up to on a single sector covering an angle of 360 degrees.

    MECHANICAL PART COATED WITH A LAYER OF AMORPHOUS CARBON FOR SLIDING IN RELATION TO A LESS HARD COMPONENT
    5.
    发明申请
    MECHANICAL PART COATED WITH A LAYER OF AMORPHOUS CARBON FOR SLIDING IN RELATION TO A LESS HARD COMPONENT 审中-公开
    机械部件与不合组织碳化硅层相连，用于与较硬的部件相关的滑动

    公开(公告)号：US20160152915A1

    公开(公告)日：2016-06-02

    申请号：US14906558

    申请日：2014-07-07

    Applicant: H.E.F.

    Inventor： Christophe HEAU

    IPC: C10M103/02 ,  C10M103/06 ,  C10M103/04

    CPC classification number: C10M103/02 ,  C10M103/04 ,  C10M103/06 ,  C23C14/024 ,  C23C14/0605 ,  C23C14/325 ,  C23C16/0272 ,  C23C16/26

    Abstract: A mechanical part provided with an amorphous carbon coating (with at least 70 wt. % of carbon not including hydrogen) and used to cooperate slidingly with an antagonistic part having a surface hardness which is a maximum of two thirds of that of the coating. The mechanical part is such that the coating has a roughness Ra which, measured by profilometry, is equal to a maximum of 0.050 microns and, measured by atomic force microscopy, a micro-roughness which is equal to a minimum of 0.004 microns and a maximum of 0.009 microns. This minimizes the wear of the less hard antagonistic part and that of the coating.

    Abstract translation: 具有无定形碳涂层（具有不包括氢的至少70重量％的碳）的机械部件，并用于与表面硬度最大为涂层的三分之二的表面硬度的拮抗部件滑动配合。 机械部件使得涂层具有通过轮廓测量法测量的最大值为0.050微米的粗糙度Ra，并且通过原子力显微镜测量的微粗糙度等于最小值为0.004微米，最大值为最大值 为0.009微米。 这最小化了较难硬的对抗部分和涂层的磨损。

    METHOD FOR COATING THE NOSE OF THE CAMS OF A CAMSHAFT WITH DLC, CAMSHAFT OBTAINED IN THIS WAY AND FACILITY FOR IMPLEMENTING SAID METHOD
    6.
    发明申请
    METHOD FOR COATING THE NOSE OF THE CAMS OF A CAMSHAFT WITH DLC, CAMSHAFT OBTAINED IN THIS WAY AND FACILITY FOR IMPLEMENTING SAID METHOD 审中-公开

    公开(公告)号：US20170298783A9

    公开(公告)日：2017-10-19

    申请号：US15319644

    申请日：2015-06-10

    Applicant: H.E.F.

    Inventor： Sandrine HENRY ,  Christophe HEAU

    IPC: F01L1/16 ,  C23C16/26 ,  F16H53/02 ,  C23C16/02 ,  C23C16/04 ,  F01L1/047

    Abstract: A cam treatment to reduce the friction coefficient thereof relative to a counterpart in an area provided with a hard coating made from amorphous Diamond-Like Carbon or DLC, involves disposing the cams on a support, bringing the support and the cams into a chamber placed under vacuum so as to clean the cams, bringing the support into relative movement along a trajectory of travel relative to a coating source, and taking the cams off the support before assembling them on a camshaft; the method involves disposing the cams on the support in a fixed configuration which is defined in such a way that the cams are brought successively opposite the source with orientations and at distances substantially identical relative to the source, to deposit a hard coating made from amorphous Diamond-Like Carbon or DLC, selectively on the fraction of the section of the cams that is oriented towards the source.

    METHOD FOR COATING THE NOSE OF THE CAMS OF A CAMSHAFT WITH DLC, CAMSHAFT OBTAINED IN THIS WAY AND FACILITY FOR IMPLEMENTING SAID METHOD
    7.
    发明申请
    METHOD FOR COATING THE NOSE OF THE CAMS OF A CAMSHAFT WITH DLC, CAMSHAFT OBTAINED IN THIS WAY AND FACILITY FOR IMPLEMENTING SAID METHOD 审中-公开

    公开(公告)号：US20170138224A1

    公开(公告)日：2017-05-18

    申请号：US15319644

    申请日：2015-06-10

    Applicant: H.E.F.

    Inventor： Sandrine HENRY ,  Christophe HEAU

    IPC: F01L1/16 ,  C23C16/26 ,  C23C16/04 ,  F16H53/02 ,  F01L1/047

    Abstract: A cam treatment to reduce the friction coefficient thereof relative to a counterpart in an area provided with a hard coating made from amorphous Diamond-Like Carbon or DLC, involves disposing the cams on a support, bringing the support and the cams into a chamber placed under vacuum so as to clean the cams, bringing the support into relative movement along a trajectory of travel relative to a coating source, and taking the cams off the support before assembling them on a camshaft; the method involves disposing the cams on the support in a fixed configuration which is defined in such a way that the cams are brought successively opposite the source with orientations and at distances substantially identical relative to the source, to deposit a hard coating made from amorphous Diamond-Like Carbon or DLC, selectively on the fraction of the section of the cams that is oriented towards the source.

    INTERNAL COMBUSTION ENGINE JACKET
    8.
    发明申请
    INTERNAL COMBUSTION ENGINE JACKET 有权
    内燃机发动机夹套

    公开(公告)号：US20160369736A1

    公开(公告)日：2016-12-22

    申请号：US14395932

    申请日：2013-05-06

    Applicant: H.E.F.

    Inventor： Christophe HEAU ,  Laurent BOMBILLON ,  Philippe MAURIN-PERRIER

    IPC: F02F1/00 ,  C23C16/50 ,  C23C16/26

    CPC classification number: F02F1/004 ,  C23C16/26 ,  C23C16/50 ,  F02F2200/00 ,  F05C2253/06 ,  F05C2253/12

    Abstract: An inside surface of an internal combustion engine jacket is treated to have a surface roughness Ra smaller than 0.06 μm, and then receives a DLC coating. A method of producing the internal combustion engine jacket includes: forming the jacket from a metal material, polishing an inside surface of the jacket to obtain a polished inside surface of roughness Ra smaller than 0.06 μm, and applying the DLC coating to the polished inside surface.

    Abstract translation: 将内燃机护套的内表面处理成表面粗糙度Ra小于0.06μm，然后接受DLC涂层。 一种内燃机护套的制造方法，其特征在于，由金属材料形成所述护套，对所述护套的内表面进行研磨，得到抛光内表面的粗糙度Ra小于0.06μm，将DLC涂层涂布于所述抛光内表面 。

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