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    Clutch plate and a method for detecting wear of a clutch plate
    1.
    发明授权
    Clutch plate and a method for detecting wear of a clutch plate 有权

    公开(公告)号：US12031588B2

    公开(公告)日：2024-07-09

    申请号：US17639403

    申请日：2020-08-31

    申请人： Volvo Truck Corporation

    发明人： Sukanya Gaurav Kishore ,  Dushyanth S

    IPC分类号： F16D13/64

    CPC分类号： F16D13/64 ,  F16D2300/18 ,  F16D2500/5023

    摘要： A clutch plate and a clutch assembly for use in a powertrain of a vehicle, the clutch plate being configured to be connected for common rotation with a driven shaft extending in an axial direction, the clutch plate including a support member and a first friction member attached thereto, the first friction member having a first friction surface configured to face and selectively engage a corresponding second friction surface of a flywheel, the clutch plate further including an electrically conducting element extending from the first friction surface toward the support member in a direction having an axial component, the electrically conducting element being configured to be electrically connected to a terminal, so that, upon engagement of the first and second friction surfaces, an electric signal may be passed between the flywheel and the terminal via the electrically conducting element.

    Electromagnetic clutch control system
    8.
    发明申请
    Electromagnetic clutch control system 失效
    电磁离合器控制系统

    公开(公告)号：US20020134639A1

    公开(公告)日：2002-09-26

    申请号：US10060056

    申请日：2002-01-31

    发明人： Masakatsu Hori ,  Ryuji Asada ,  Akihiro Iwazaki ,  Shinji Ohkuma ,  Tatsuhiro Tomari ,  Kiyoshi Wakamatsu

    IPC分类号： F16D027/115

    CPC分类号： F16D27/12 ,  B60K17/20 ,  B60K23/04 ,  F16D48/064 ,  F16D2500/1022 ,  F16D2500/5023 ,  F16D2500/50275 ,  F16D2500/70404 ,  F16D2500/70418

    摘要： The engagement force of an electromagnetic clutch can be precisely controlled at a target engagement force by a simple structure even when an air gap of the electromagnetic clutch varies. An electromagnetic clutch control system includes magnetic flux density sensors, a target engagement force calculating device, a target magnetic flux density calculating device, and a feedback control device. The target magnetic flux density calculating device calculates a target magnetic flux density nullt based on a target engagement force Tt of electromagnetic clutches calculated by the target engagement force calculating device. The current supplied to the electromagnetic clutches is feedback controlled by the feedback control device so that an actual magnetic flux density null detected by the magnetic flux density sensors agrees with the target magnetic flux density nullt. This allows a target engagement force to be generated in the electromagnetic clutches by making the actual magnetic flux density agree precisely with the target magnetic flux density, even when the air gap varies due to wear of a frictional engagement member, etc. and the relationship between the actual magnetic flux density and the current supplied to the electromagnetic clutches changes.

    摘要翻译： 即使当电磁离合器的气隙变化时，电磁离合器的接合力也可以通过简单的结构精确地控制在目标接合力。 电磁离合器控制系统包括磁通密度传感器，目标接合力计算装置，目标磁通密度计算装置和反馈控制装置。 目标磁通密度计算装置基于由目标接合力计算装置计算的电磁离合器的目标接合力Tt来计算目标磁通密度点。 提供给电磁离合器的电流由反馈控制装置反馈控制，使得由磁通密度传感器检测到的实际磁通密度phi与目标磁通密度phit一致。 这允许通过使实际磁通密度与目标磁通密度精确地一致地在电磁离合器中产生目标接合力，即使当由于摩擦接合构件的磨损等导致气隙变化时， 提供给电磁离合器的实际磁通密度和电流发生变化。

    Apparatus and method for detecting abrasion of clutch for transmission
    9.
    发明授权
    Apparatus and method for detecting abrasion of clutch for transmission 有权
    用于检测离合器传动磨损的装置和方法

    公开(公告)号：US6117048A

    公开(公告)日：2000-09-12

    申请号：US171075

    申请日：1998-10-09

    申请人： Makoto Toyama

    发明人： Makoto Toyama

    IPC分类号： G01M13/02 ,  F16D25/12 ,  F16D48/06 ,  F16H59/18 ,  F16H59/44 ,  F16H59/68 ,  F16H61/00 ,  F16H61/684 ,  F16H3/083

    CPC分类号： F16H57/01 ,  F16D48/066 ,  F16H59/68 ,  F16D2500/3024 ,  F16D2500/3166 ,  F16D2500/5023 ,  F16H2057/014 ,  F16H2061/0087 ,  F16H59/18 ,  F16H59/44 ,  F16H61/684 ,  Y10T477/6937 ,  Y10T477/75 ,  Y10T477/78

    摘要： By determining the abrasion of a gear clutch during the operation of a construction machine and ascertaining the present abrasion state, it is possible to systematically predict the replacement time of a clutch disc and also to ascertain the presence of an abnormally worn clutch disc. For this purpose, in an apparatus for detecting the abrasion of a clutch of a transmission which includes plural gear clutches, hydraulic operation pistons for receiving pressurized oil from a hydraulic pump (21) to engage with these gear clutches, clutch piston chambers, and control means for selecting a gear by a depression quantity of an acceleration pedal and a signal from a vehicle speed sensor and for outputting change over instruction to a selected clutch hydraulic control valve, it is provided with a pressure sensor (29) for measuring the pressure in the clutch piston chamber, and clutch abrasion detection means (10) for storing the relation between the time T, when these clutch piston chambers are filled with pressurized oil to reach pressures of predetermined values, and the strokes L of the clutches, for storing an instruction time to the selected clutch hydraulic control valve, for finding the difference from the time when the pressure in the selected clutch piston chamber reaches a predetermined value, and for determining the abrasion of the selected gear clutch from this time difference.

    摘要翻译： PCT No.PCT / JP97 / 01197 Sec。 371日期：1998年10月9日 102（e）1998年10月9日PCT PCT 1997年4月8日PCT公布。 出版物WO97 / 38246 日期1997年10月16日通过确定在施工机械操作期间齿轮离合器的磨损并确定当前的磨损状态，可以系统地预测离合器盘的更换时间并且还确定存在异常磨损 离合器盘。 为此，在用于检测包括多个齿轮离合器的变速器的离合器的磨损的装置中，用于从液压泵（21）接收加压油以与这些齿轮离合器接合的液压操作活塞，离合器活塞室和控制 用于通过加速踏板的踏入量和来自车速传感器的信号来选择齿轮的装置，并且用于将选择的转换指令输出到选定的离合器液压控制阀，设置有用于测量压力的压力传感器（29） 离合器活塞室和离合器磨损检测装置（10），用于存储当这些离合器活塞室充满加压油达到预定值的压力时的时间T和离合器的冲程L之间的关系，用于存储 指示时间到所选择的离合器液压控制阀，用于发现与选择的离合器活塞室中的压力之间的差异 达到预定值，并且用于从该时间差确定所选择的齿轮离合器的磨损。