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    Cooling fan control device
    1.
    发明授权
    Cooling fan control device 有权
    冷却风扇控制装置

    公开(公告)号：US09458758B2

    公开(公告)日：2016-10-04

    申请号：US14358324

    申请日：2012-11-15

    Applicant: KCM Corporation

    Inventor： Koji Hyodo ,  Atsushi Shimazu ,  Isamu Aoki ,  Tetsuji Tanaka ,  Keigo Kikuchi

    IPC: F16D31/02 ,  F01P7/02 ,  F16H61/4165 ,  F16H61/4043 ,  F01P7/04 ,  F16H61/4061 ,  F01P5/04 ,  E02F9/22 ,  B60K25/02

    CPC classification number: F01P7/02 ,  B60K2025/026 ,  E02F9/226 ,  F01P5/043 ,  F01P7/044 ,  F16H61/4043 ,  F16H61/4061 ,  F16H61/4165

    Abstract: A cooling fan control unit, in response to an operation performed at the rotation direction selector switch to select a reverse rotation setting while the cooling fan is rotating forward, lowers a relief pressure setting at the variable relief valve to a predetermined lower limit value over a predetermined length of time, and once the discharge pressure at the hydraulic pump detected by the pressure sensor is lowered to a predetermined switch-over pressure, executes control so as to switch the direction of flow of pressure oil to the hydraulic motor to the reverse direction by switching the direction switching valve and raises the relief pressure setting at the variable relief valve to a reverse rotation pressure setting, at which the hydraulic motor rotates in the reverse direction, over a predetermined length of time.

    Abstract translation: 一种冷却风扇控制单元，响应于在所述旋转方向选择开关处进行的操作以在所述冷却风扇向前旋转时选择反向旋转设定，将所述可变溢流阀上的溢流压力设定值降低到预定的下限值 预定的时间长度，一旦由压力传感器检测到的液压泵的排出压力下降到预定的切换压力，则执行控制，以将压力油的流向朝向液压马达的相反方向 通过切换方向切换阀，将可变溢流阀的溢流压力设定提高到液压马达反方向旋转预定时间长度的反转压力设定值。

    Work vehicle
    2.
    发明授权
    Work vehicle 有权

    公开(公告)号：US10358794B2

    公开(公告)日：2019-07-23

    申请号：US15122208

    申请日：2015-05-13

    Applicant: KCM Corporation

    Inventor： Tetsuji Tanaka ,  Yasunori Miyamoto ,  Koji Hyodo ,  Isamu Aoki ,  Katsuyuki Kirita ,  Hiroaki Yada ,  Seiji Nakagawa ,  Masaki Yoshikawa

    IPC: E02F9/20 ,  E02F3/34 ,  E02F3/43

    Abstract: A work vehicle, includes: a lift arm rotatably linked to a front portion of a vehicle body of a work vehicle so as to be allowed to swing along an up/down direction; an operation lever that can be operated within a range between a raising operation end position and a lowering operation end position, and is operated to raise and lower the lift arm; an up detent mechanism having a holding function for holding the operation lever at the raising operation end position once the operation lever is operated to the raising operation end position; and a down detent mechanism having a holding function for holding the operation lever at the lowering operation end position once the operation lever is operated to the lowering operation end position, wherein: when an angle of the lift arm becomes greater than a predetermined upper limit, the holding function of the up detent mechanism and the holding function of the down detent mechanism are disengaged.

    Engine control device for work vehicle
    8.
    发明授权
    Engine control device for work vehicle 有权
    工作车辆发动机控制装置

    公开(公告)号：US09523315B2

    公开(公告)日：2016-12-20

    申请号：US14376286

    申请日：2013-02-04

    Applicant: KCM Corporation

    Inventor： Koji Hyodo ,  Isamu Aoki ,  Tetsuji Tanaka ,  Keigo Kikuchi

    IPC: F02D31/00 ,  F02D41/02 ,  F02D41/08 ,  B60K31/00 ,  F16H63/50 ,  F16H59/46 ,  F02D29/02

    CPC classification number: F02D31/001 ,  B60K31/00 ,  B60W2510/1005 ,  B60W2710/0644 ,  B60Y2400/426 ,  F02D29/02 ,  F02D31/007 ,  F02D41/0215 ,  F02D41/083 ,  F02D2200/101 ,  F02D2200/602 ,  F02D2400/12 ,  F16H63/50 ,  F16H2059/467

    Abstract: An engine control device for work vehicle includes: a target rotation speed setting unit that sets a target rotation speed of an engine corresponding to an operation amount of an accelerator pedal; a rotation speed control unit that controls a rotation speed of the engine according to the target rotation speed; a travel driving unit that transmits rotation of the engine to wheels via a torque converter; a speed ratio detection unit that detects a speed ratio between an input shaft and an output shaft of the torque converter; and a target rotation speed correction unit that corrects the target rotation speed set by the target rotation speed setting unit so as to increase the target rotation speed based on the speed ratio when the operation amount of the accelerator pedal is smaller than a predetermined value and the speed ratio detected by the speed ratio detection unit is smaller than a predetermined value within a range which is equal to or greater than 0 and less than 1.

    Abstract translation: 一种用于作业车辆的发动机控制装置，包括：目标转速设定单元，其设定与加速器踏板的操作量对应的发动机的目标转速; 转速控制单元，其根据目标转速​​来控制发动机的转速; 行驶驱动单元，其经由变矩器将发动机的旋转传递到车轮; 变速比检测单元，其检测所述变矩器的输入轴和输出轴之间的速比; 以及目标旋转速度校正单元，其校正由所述目标转速设定单元设定的目标转速，以便当所述加速踏板的操作量小于预定值时，基于所述速比来增加所述目标转速，并且 由速比检测单元检测的速比小于等于0且小于1的范围内的预定值。

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