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公开(公告)号：US20140330490A1
公开(公告)日：2014-11-06
申请号：US14360963
申请日：2012-10-05
发明人： Isamu Aoki , Koji Hyodo , Tetsuji Tanaka , Keigo Kikuchi
IPC分类号： E02F3/43
CPC分类号： E02F3/431 , E02F9/2079 , E02F9/2207 , E02F9/2217 , E02F9/2253 , E02F9/265
摘要： Provided is a work vehicle which is capable of appropriately setting the height of a work tool as a control threshold value for a ride control device or an automatic transmission control device, and which is excellent in operability, travel stability, and work efficiency. A value detected by an angle sensor (39) when a signal import switch (46) is operated by an operator is stored in a height position storage unit (35b) of a main controller (35) as height position information about a bucket (13) for excavation work. In the height position storage unit (35b), the height position of the bucket (13) for hauling work and the height position of the bucket (13) for loading work are stored in advance as offset values from the height position information about the bucket (13) for excavation work. In this way, the ride control device or the automatic transmission control device can be appropriately controlled regardless of the preference or habit of the operator.
摘要翻译： 提供了能够适当地设定作业用工具的高度作为驾驶控制装置或自动变速器控制装置的控制阈值的作业车辆，其操作性，行驶稳定性和作业效率优异。 当操作者操作信号导入开关46时由角度传感器39检测到的值作为关于铲斗的高度位置信息（13）被存储在主控制器（35）的高度位置存储单元（35b）中 ）挖掘工作。 在高度位置存储单元（35b）中，作为用于牵引作业的铲斗（13）的高度位置和用于装载作业的铲斗（13）的高度位置作为从关于铲斗的高度位置信息的偏移值预先存储 （13）挖掘工作。 以这种方式，无论操作者的偏好或习惯如何，都可以适当地控制行驶控制装置或自动变速器控制装置。
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公开(公告)号：US20140288787A1
公开(公告)日：2014-09-25
申请号：US14358582
申请日：2012-11-15
发明人： Koji Hyodo , Tetsuji Tanaka , Isamu Aoki , Keigo Kikuchi
IPC分类号： B60W10/02 , B60W10/184
CPC分类号： B60W10/02 , B60W10/184 , B60W30/18109 , B60W2510/182 , B60W2540/10 , F16D48/06 , F16D2500/10412 , F16D2500/111 , F16D2500/1112 , F16D2500/30806 , F16D2500/3108 , F16D2500/31426 , F16D2500/3144 , F16D2500/70404 , F16D2500/70406 , F16D2500/7041 , F16D2500/70424
摘要： A clutch control device for a work vehicle includes a determination unit that determines as to whether or not a clutch cutoff condition has been established based upon whether or not the accelerator pedal is being operated, as determined by the accelerator pedal operation determination unit, the vehicle speed of the work vehicle detected by the vehicle speed detection unit and the braking force of the work vehicle detected by the braking force detection unit; and a clutch control unit that controls engagement/release of a clutch so as to release the clutch when the determination unit determines that the clutch cutoff condition has been established.
摘要翻译： 一种用于作业车辆的离合器控制装置，包括：确定单元，其基于由加速器踏板操作确定单元确定的加速踏板是否正在操作来确定离合器切断条件是否已被建立，车辆 由车速检测单元检测到的作业车辆的速度和由制动力检测单元检测到的作业车辆的制动力; 以及离合器控制单元，其在确定单元确定离合器切断条件已经建立时，控制离合器的接合/释放，以释放离合器。
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公开(公告)号：US11505921B2
公开(公告)日：2022-11-22
申请号：US16641735
申请日：2018-09-04
发明人： Koji Hyodo , Isamu Aoki , Tetsuji Tanaka , Koji Shimazaki , Hironao Suzuki
摘要： A wheel loader configured to reduce the traveling distance required for a raise and run operation, and reduce fuel consumption includes: an engine 3; a torque converter 41; a forward and reverse switch 62; a stepping amount sensor 610; an operation amount sensor 73; and a controller 5. The controller 5 determines whether a specific condition for specifying an operation of the lift arm 21 in an upper direction during forward travel of the vehicle body, on the basis of a forward and reverse switching signal, the stepping amount on the accelerator pedal 61, and a pilot pressure Ti pertaining to the lifting operation amount for the lift arm 21. When the specific condition is satisfied, the vehicle speed is limited by reducing the maximum rotational speed of the engine 3 in response to increase in the pilot pressure Ti.
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公开(公告)号：US20140311140A1
公开(公告)日：2014-10-23
申请号：US14358324
申请日：2012-11-15
发明人： Koji Hyodo , Atsushi Shimazu , Isamu Aoki , Tetsuji Tanaka , Keigo Kikuchi
IPC分类号： F01P7/02 , F16H61/4061
CPC分类号： F01P7/02 , B60K2025/026 , E02F9/226 , F01P5/043 , F01P7/044 , F16H61/4043 , F16H61/4061 , F16H61/4165
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20140303879A1
公开(公告)日：2014-10-09
申请号：US14356784
申请日：2012-11-15
发明人： Koji Hyodo , Masaki Yoshikawa , Isamu Aoki , Tetsuji Tanaka
IPC分类号： F02D29/02
CPC分类号： F02D29/02 , E02F3/3411 , E02F9/202 , E02F9/2066 , E02F9/2083 , E02F9/2246 , E02F9/2296 , F02D17/04 , F02D29/04 , F02N11/0822 , F02N11/084 , F02N2200/0802 , F02N2200/0803 , F02N2200/0808 , F02N2200/101 , Y02T10/48
摘要： An engine control device for a work vehicle decides that an idling stop condition is established when the front device is in the unengaged slate, the steering device is in the engaged state, the accelerator pedal is in the non-operation state, either the transmission is in the neutral state or the parking brake device is in the engaged state or the transmission is in the neutral state and also the parking brake device is in the engaged state, and the service brake device is in the unengaged state, and stops an engine when it is decided that it passes the predetermined length of time since it was decided that the idling stop condition was established.
摘要翻译： 工作车辆的发动机控制装置判定当前部装置处于未接合的板岩中时，转向装置处于接合状态，加速踏板处于非操作状态时，建立怠速停止状态， 在中立状态或驻车制动装置处于接合状态或变速器处于中立状态，并且驻车制动装置处于接合状态，并且行车制动装置处于未起动状态，并且停止发动机时 由于判断为怠速停止条件成立，所以判断为经过了规定的时间。
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公开(公告)号：US11293169B2
公开(公告)日：2022-04-05
申请号：US16493410
申请日：2018-09-19
发明人： Tomohiro Ueda , Masaki Yoshikawa , Takashi Ishii , Takayoshi Murahashi , Masakazu Kaitou , Koji Shimazaki , Isamu Aoki
摘要： In an unloaded state of the bucket (3), a control device (30) calculates an unloaded moment (M0) around a hinge pin G from the pressure of the lift arm cylinder that is detected by pressure sensors (15a, 15b), the angle of a lift arm that is detected by a lift arm angle sensor 14, and dimension data extracted from a vehicle body information database (35). In a loaded state of the bucket, the control device calculates a loaded moment (M1) around the hinge pin G from the pressure of the lift arm cylinder, the angle of the lift arm, and the dimension data extracted from the vehicle body information database. The control device calculates the load (W) on the bucket by dividing the difference between the unloaded moment and the loaded moment by the horizontal distance (Lw) between the hinge pin and the gravity center position of the bucket.
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公开(公告)号：US11274745B2
公开(公告)日：2022-03-15
申请号：US15756072
申请日：2016-12-14
发明人： Koji Hyodo , Masashi Yamashita , Tetsuji Tanaka , Katsutaka Hara , Masaki Nukii , Isamu Aoki
IPC分类号： F01P11/10 , F16H61/18 , F02B39/16 , F16H59/78 , F02D29/02 , F16H63/50 , F01P7/04 , F02B37/24 , B60W30/184 , B60K11/08 , F02D41/00 , F01P7/16 , B60W50/12 , F01P5/04 , F02D45/00 , F02D29/04 , F16H61/16 , F02D31/00 , F01P5/02
摘要： To curb temperature rises in a control device for a supercharger and extend the life of the control device for the supercharger, a work vehicle includes a variable geometry supercharger with variable boost pressure, and a working device driven by pressure oil discharged from a working hydraulic pump, the work vehicle further including: a supercharger control device adapted to control the supercharger; a temperature detection device adapted to detect temperature of the supercharger control device; and a main control device adapted to limit at least one of maximum rotational speed of an engine and maximum vehicle speed of the work vehicle in case the temperature of the supercharger control device is above a predetermined temperature as compared to case the temperature of the supercharger control device is below the predetermined temperature.
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公开(公告)号：US11242672B2
公开(公告)日：2022-02-08
申请号：US16328857
申请日：2017-09-29
发明人： Koji Hyodo , Isamu Aoki , Tetsuji Tanaka , Koji Shimazaki , Hironao Suzuki
摘要： A wheel loader configured to reduce a sudden change in vehicle speed caused by an erroneous determination of a raising operation of a lift arm is provided. A wheel loader 1 includes an engine 3, a variable displacement type HST pump 41, a variable displacement type HST motor 42 coupled to the HST pump 41 in a closed circuit, a hydraulic pump for working device 43, a forward/reverse selector switch 62 for switching a forward movement and a backward movement of a vehicle body, a depression amount sensor 610 that detects a depression amount of an accelerator pedal 61, a pressure sensor 73 that detects a discharge pressure Pa of the hydraulic pump for working device 43, and a controller 5. The controller 5 determines whether a specific condition to identify an upward movement of a lift arm 21 during a forward travel of the vehicle body based on a forward/reverse switching signal, the depression amount of the accelerator pedal 61, and the discharge pressure Pa detected by the pressure sensor 73. When the specific condition is satisfied, the controller 5 controls a displacement volume of the HST motor 42 according to an increase of the discharge pressure Pa, so as to limit the vehicle speed.
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公开(公告)号：US10895062B2
公开(公告)日：2021-01-19
申请号：US16641718
申请日：2018-09-28
发明人： Koji Hyodo , Yuki Ahiko , Tetsuji Tanaka , Isamu Aoki , Masaki Nukii , Masashi Yamashita
IPC分类号： E02F9/22 , E02F3/43 , B60W10/06 , B60W10/103 , F02D29/00
摘要： Provide is a loading vehicle capable of quickly operating an object handling device in the upward direction while traveling forward.
A wheel loader 1 comprises an engine 3, an HST pump 41, an HST motor 42, a forward/reverse changeover switch 62, a step-on amount sensor 610, a pressure sensor 73, and a controller 5. In a case where a specific condition for specifying lifting operation of a lift arm 21 during forward traveling of the vehicle body is satisfied, the controller 5 increases maximum rotational speed of the engine to a predetermined value Nmax2 which is greater than maximum engine rotational speed Nmax1 during traveling on the flat ground, and limit maximum vehicle speed to a predetermined value Vmax2 which is smaller than maximum vehicle speed Vmax1 prior to the lifting operation of the lift arm 2.-
公开(公告)号：US09458605B2
公开(公告)日：2016-10-04
申请号：US14504678
申请日：2014-10-02
发明人： Koji Hyodo , Takashi Takeyama , Tetsuji Tanaka , Isamu Aoki , Katsutaka Hara , Tatsuo Oouchi
CPC分类号： E02F9/2246 , E02F3/283 , E02F9/0883 , E02F9/2235 , E02F9/226 , E02F9/2296 , F01N3/208 , F01N11/00 , F01N2550/05 , F01N2590/08 , F01N2900/0412 , F01N2900/08 , F01N2900/1814 , F02D31/001 , F02D41/021 , F02D41/0235 , F02D2200/101 , F02D2250/18 , F02D2250/26 , F02D2250/36 , Y02A50/2325 , Y02T10/24
摘要： A work vehicle including a front work device, contains: a variable displacement hydraulic pump that is driven by an engine and supplies pressure oil to an actuator that drives the front work device; an exhaust gas purification device that purifies nitrogen oxide in exhaust gas discharged from the engine using a reducing agent solution stored in a reducing agent tank; a remaining amount detection device that detects a remaining amount of the reducing agent solution in the reducing agent tank; and a control unit that decreases output torque of the engine and also decreases a rotational speed of the engine in a rated point according to decrease of the remaining amount of the reducing agent solution detected by the remaining amount detection device.
摘要翻译： 一种包括前工作装置的工作车辆，包括：可变排量液压泵，其由发动机驱动，并将压力油供给到驱动前作业装置的致动器; 使用存储在还原剂槽中的还原剂溶液净化从发动机排出的废气中的氮氧化物的废气净化装置; 剩余量检测装置，其检测还原剂槽中的还原剂溶液的剩余量; 以及控制单元，其减小发动机的输出转矩并且还根据由剩余量检测装置检测到的还原剂溶液的剩余量的减少而在额定点降低发动机的转速。
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