公开(公告)号：US20170341915A1

公开(公告)日：2017-11-30

申请号：US15509965

申请日：2016-05-31

Applicant: Komatsu Ltd.

Inventor： Shinji Kaneko ,  Jun Hashimoto ,  Yuji Kikuyama

IPC: B66F9/075 ,  B62D15/02 ,  B62D5/09

CPC classification number: B66F9/07568 ,  B62D5/06 ,  B62D5/09 ,  B62D15/0215

Abstract: A method of controlling a work vehicle including a steering cylinder operating a steering wheel by hydraulic oil supplied thereto, a steering member receiving an input for operating the steering wheel, and a steering valve unit which is connected to the steering member and supplies the hydraulic oil to the steering cylinder, the method includes: obtaining a speed of the work vehicle and a steering angle of the steering wheel; and decreasing a correction factor for correcting a deviation amount of actual steering angle information of the steering wheel with respect to target information as information on a target steering angle of the steering wheel with respect to an operation amount of the steering member when the speed of the work vehicle increases in a case where the steering angle of the steering wheel obtained based on the steering angle is in a predetermined range from a neutral position.

公开(公告)号：US09540011B2

公开(公告)日：2017-01-10

申请号：US14419337

申请日：2014-09-18

Applicant: Komatsu Ltd.

Inventor： Shinji Kaneko ,  Yoshitaka Onodera ,  Yoshifumi Shitara ,  Taishi Oiwa ,  Jun Hashimoto

IPC: B60W30/188 ,  B60W30/18

CPC classification number: B60W30/188 ,  B60W30/18045 ,  B60W2300/121 ,  B60W2520/04 ,  B60W2520/06 ,  B60W2720/30

Abstract: A work vehicle includes a variable displacement hydraulic pump driven by an engine, a hydraulic motor forming a closed circuit with the pump and driven by hydraulic fluid discharged from the pump, wheels driven by the motor to allow the work vehicle to travel, a selector detecting an operating state of a switch switching the traveling of the work vehicle between forward and backward, and a controller. When the selector detects a reversal operation of the switch to reverse the traveling direction when the work vehicle travels, the controller sets relationship between the vehicle speed of the work vehicle and the upper limit of the rotational speed of the engine such that the upper limit increases as the absolute value of the vehicle speed approaches zero. The controller obtains an upper limit of the rotational speed from the relationship and a vehicle speed of the work vehicle.

Abstract translation: 工作车辆包括由发动机驱动的可变排量液压泵，液压马达与泵形成闭合回路并由泵排出的液压流体驱动，由电动机驱动的车轮以允许作业车辆行驶，选择器检测 开关将工作车辆的前进和后退的行驶切换到开关的操作状态和控制器。 当工作车辆行驶时，当选择器检测到反转操作以使行进方向反转时，控制器设定作业车辆的车速与发动机的转速的上限之间的关系，使得上限增加 因为车速的绝对值接近零。 控制器根据作业车辆的关系和车速获得转速的上限。

公开(公告)号：US20160257539A1

公开(公告)日：2016-09-08

申请号：US14425919

申请日：2014-09-19

Applicant: KOMATSU LTD.

Inventor： Shinji Kaneko ,  Yoshitaka Onodera ,  Yoshifumi Shitara ,  Taishi Oiwa ,  Jun Hashimoto

IPC: B66F9/075 ,  F02D41/10 ,  B66F9/22

CPC classification number: B66F9/07572 ,  B60K17/10 ,  B60Y2200/15 ,  B66F9/07 ,  B66F9/22 ,  F02D11/105 ,  F02D29/04 ,  F02D41/021 ,  F02D41/10 ,  F02D2200/501 ,  F02D2200/602 ,  F16H61/42 ,  F16H61/431

Abstract: A work vehicle includes an accelerator operation amount generator receiving an actual accelerator operation amount of an accelerator operator to generate a control accelerator operation amount; an engine controller controlling the engine according to the control accelerator operation amount; and a storage storing a table in which an increasing speed for the control accelerator operation amount is set, wherein the accelerator operation amount generator obtains a difference between a converted accelerator operation amount of the accelerator operator converted from a rotating speed of the engine in a current control cycle and a control accelerator operation amount obtained in the last control cycle, determines an increasing speed of the control accelerator operation amount from the difference by referring to the table, and changes the control accelerator operation amount to an actual operation amount in the current control cycle with the determined increasing speed.

Abstract translation: 工作车辆包括加速器操作量发生器，其接收加速器操作器的实际加速器操作量，以产生控制加速器操作量; 发动机控制器，其根据所述控制加速器操作量控制所述发动机; 以及存储装置，其中设置有用于控制加速器操作量的增加速度的表，其中，所述加速器操作量发生器获得从当前的发动机的转速转换的加速器操作器的转换加速器操作量之间的差 控制循环和控制加速器操作量，通过参照该表从该差确定控制加速器操作量的增加速度，并将控制加速器操作量改变为当前控制中的实际操作量 以确定的增加速度循环。

公开(公告)号：US09593002B2

公开(公告)日：2017-03-14

申请号：US14425919

申请日：2014-09-19

Applicant: Komatsu Ltd.

Inventor： Shinji Kaneko ,  Yoshitaka Onodera ,  Yoshifumi Shitara ,  Taishi Oiwa ,  Jun Hashimoto

IPC: B66F9/075 ,  B60K17/10 ,  F02D41/02 ,  F02D11/10 ,  F16H61/42 ,  F16H61/431 ,  B66F9/22 ,  F02D41/10 ,  F02D29/04 ,  B66F9/07

CPC classification number: B66F9/07572 ,  B60K17/10 ,  B60Y2200/15 ,  B66F9/07 ,  B66F9/22 ,  F02D11/105 ,  F02D29/04 ,  F02D41/021 ,  F02D41/10 ,  F02D2200/501 ,  F02D2200/602 ,  F16H61/42 ,  F16H61/431

Abstract: A work vehicle includes an accelerator operation amount generator receiving an actual accelerator operation amount of an accelerator operator to generate a control accelerator operation amount; an engine controller controlling the engine according to the control accelerator operation amount; and a storage storing a table in which an increasing speed for the control accelerator operation amount is set, wherein the accelerator operation amount generator obtains a difference between a converted accelerator operation amount of the accelerator operator converted from a rotating speed of the engine in a current control cycle and a control accelerator operation amount obtained in the last control cycle, determines an increasing speed of the control accelerator operation amount from the difference by referring to the table, and changes the control accelerator operation amount to an actual operation amount in the current control cycle with the determined increasing speed.

Abstract translation: 工作车辆包括加速器操作量发生器，其接收加速器操作器的实际加速器操作量，以产生控制加速器操作量; 发动机控制器，其根据所述控制加速器操作量控制所述发动机; 以及存储装置，其中设置有用于控制加速器操作量的增加速度的表，其中，所述加速器操作量发生器获得从当前的发动机的转速转换的加速器操作器的转换的加速器操作量之间的差 控制循环和控制加速器操作量，通过参照该表从该差确定控制加速器操作量的增加速度，并将控制加速器操作量改变为当前控制中的实际操作量 以确定的增加速度循环。

公开(公告)号：US20160082966A1

公开(公告)日：2016-03-24

申请号：US14419337

申请日：2014-09-18

Applicant: Komatsu Ltd.

Inventor： Shinji Kaneko ,  Yoshitaka Onodera ,  Yoshifumi Shitara ,  Taishi Oiwa ,  Jun Hashimoto

IPC: B60W30/188 ,  B60W30/18

CPC classification number: B60W30/188 ,  B60W30/18045 ,  B60W2300/121 ,  B60W2520/04 ,  B60W2520/06 ,  B60W2720/30

Abstract: A work vehicle includes a variable displacement hydraulic pump driven by an engine, a hydraulic motor forming a closed circuit with the pump and driven by hydraulic fluid discharged from the pump, wheels driven by the motor to allow the work vehicle to travel, a selector detecting an operating state of a switch switching the traveling of the work vehicle between forward and backward, and a controller. When the selector detects a reversal operation of the switch to reverse the traveling direction when the work vehicle travels, the controller sets relationship between the vehicle speed of the work vehicle and the upper limit of the rotational speed of the engine such that the upper limit increases as the absolute value of the vehicle speed approaches zero. The controller obtains an upper limit of the rotational speed from the relationship and a vehicle speed of the work vehicle.

Abstract translation: 工作车辆包括由发动机驱动的可变排量液压泵，液压马达与泵形成闭合回路并由泵排出的液压流体驱动，由电动机驱动的车轮以允许作业车辆行驶，选择器检测 开关将工作车辆的前进和后退的行驶切换到开关的操作状态和控制器。 当工作车辆行驶时，当选择器检测到反转操作以使行进方向反转时，控制器设定作业车辆的车速与发动机的转速的上限之间的关系，使得上限增加 因为车速的绝对值接近零。 控制器根据作业车辆的关系和车速获得转速的上限。

公开(公告)号：US20160084275A1

公开(公告)日：2016-03-24

申请号：US14416807

申请日：2014-09-18

Applicant: Komatsu Ltd.

Inventor： Shinji Kaneko ,  Yoshitaka Onodera ,  Yoshifumi Shitara ,  Taishi Oiwa ,  Jun Hashimoto

IPC: F15B11/042

CPC classification number: B66F9/07572 ,  B60Y2200/15 ,  B66F9/22 ,  F16H59/44 ,  F16H59/48 ,  F16H61/431 ,  F16H61/462

Abstract: A work vehicle including: a traveling hydraulic pump of a variable displacement type driven by engine; a hydraulic motor forming a closed circuit with the traveling hydraulic pump and driven by operating oil discharged from the traveling hydraulic pump; a drive wheel driven by the hydraulic motor; and a control device determining whether an operator of the work vehicle has an intention of decelerating the work vehicle, and when the operator has an intention of decelerating the work vehicle and when the work vehicle starts to increase its speed, the control device causes a capacity ratio obtained by dividing a capacity of the hydraulic motor by a capacity of the traveling hydraulic pump, to be equal to or larger than a value when the work vehicle starts to increase its speed, according to an increasing amount in the speed of the work vehicle.

Abstract translation: 一种工作车辆，包括：由发动机驱动的可变排量型行驶液压泵; 液压马达与行驶液压泵形成闭合回路，并由从行驶液压泵排出的工作油驱动; 由液压马达驱动的驱动轮; 以及控制装置，确定作业车辆的操作者是否具有使作业车辆减速的意图，并且当操作者意图使作业车辆减速时，以及当工作车辆开始增加速度时，控制装置产生容量 根据行驶液压泵的容量将液压马达的容量除以工作车辆开始增加速度的值而得到的比例，根据作业车辆的速度的增加量 。