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公开(公告)号：US09624079B2
公开(公告)日：2017-04-18
申请号：US14363015
申请日：2013-12-27
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko , Taishi Oiwa
IPC: B66F9/075 , B66F9/22 , F16H61/431 , F16H61/421
CPC classification number: B66F9/07572 , B66F9/22 , F15B2211/20546 , F15B2211/20553 , F16H61/421 , F16H61/431 , F16H2312/10
Abstract: A forklift includes a variable displacement hydraulic pump driven by an engine, a hydraulic motor that forms a closed circuit with the hydraulic pump therebetween and is driven by hydraulic oil discharged from the hydraulic pump, and driving wheels driven by the hydraulic motor. A control device of the forklift determines a rate of increase of an inching rate, based on at least one of an accelerator opening, a brake opening indicating an operation amount of a brake pedal, a change speed of the brake opening, and a vehicle speed detected by a vehicle speed sensor.
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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。
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公开(公告)号：US20160297654A1
公开(公告)日：2016-10-13
申请号：US14364178
申请日：2013-12-27
Applicant: KOMATSU LTD.
Inventor： Shinji Kaneko , Taishi Oiwa
IPC: B66F9/075
CPC classification number: B66F9/07572 , B66F9/072 , B66F9/22 , F16H61/431
Abstract: A forklift equipped with a variable displacement traveling hydraulic pump driven by an engine, a hydraulic motor that forms a closed circuit with the traveling hydraulic pump therebetween and is driven by hydraulic oil discharged from the traveling hydraulic pump, and driving wheels driven by the hydraulic motor, when an accelerator opening detected by an accelerator opening sensor is reduced, the accelerator opening detected by the accelerator opening sensor and a target maximum absorption torque of the traveling hydraulic pump are given to a table on which a setting value calculated in advance depending on the accelerator opening, and the target maximum absorption torque of the traveling hydraulic pump or a vehicle speed of the forklift is described to calculate the setting value, and the accelerator opening detected by the accelerator opening sensor is corrected using the obtained setting value to calculate a corrected accelerator opening.
Abstract translation: 一种配备有由发动机驱动的可变排量行驶液压泵的叉车，与所述行驶液压泵在其间形成闭路的液压马达，并且由从所述行驶液压泵排出的液压油驱动，以及由所述液压马达驱动的驱动轮 当由加速器开度传感器检测到的加速器开度减小时，由加速器开度传感器检测到的加速器开度和行驶液压泵的目标最大吸收扭矩被赋予预先计算出的设定值根据 描述行驶液压泵的目标最大吸收扭矩或叉车的车速，以计算设定值，并使用所获得的设定值来校正由加速器开度传感器检测出的油门开度， 加速器开启。
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公开(公告)号：US20160289055A1
公开(公告)日：2016-10-06
申请号：US14363015
申请日：2013-12-27
Applicant: KOMATSU LTD.
Inventor： Shinji Kaneko , Taishi Oiwa
IPC: B66F9/075 , F16H61/431 , F16H61/421 , B66F9/22
CPC classification number: B66F9/07572 , B66F9/22 , F15B2211/20546 , F15B2211/20553 , F16H61/421 , F16H61/431 , F16H2312/10
Abstract: A forklift includes a variable displacement traveling hydraulic pump driven by an engine, a hydraulic motor that forms a closed circuit with the traveling hydraulic pump therebetween and is driven by hydraulic oil discharged from the traveling hydraulic pump, and driving wheels driven by the hydraulic motor. A control device of the forklift determines an increase speed of an inching rate, based on at least one of an accelerator opening, a brake opening indicating an operation amount of a brake pedal, a change speed of the brake opening, and a vehicle speed detected by a vehicle speed sensor.
Abstract translation: 叉车包括由发动机驱动的可变排量行驶液压泵，液压马达与其间的行驶液压泵形成闭合回路，并由从行驶液压泵排出的液压油和由液压马达驱动的驱动轮驱动。 叉车的控制装置基于加速器开度，表示制动踏板的操作量的制动开关，制动器开度的变化速度和检测到的车速中的至少一个来确定微动速度的增加速度 通过车速传感器。
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公开(公告)号：US09221657B2
公开(公告)日：2015-12-29
申请号：US14359188
申请日：2013-12-27
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko , Taishi Oiwa
CPC classification number: B66F9/07572 , B60K6/00 , B66F9/22 , F16H59/18 , F16H61/431 , F16H61/468
Abstract: Provided is a forklift equipped with a variable displacement traveling hydraulic pump driven by an engine, a hydraulic motor that forms a closed circuit with the traveling hydraulic pump therebetween and is driven by hydraulic oil discharged from the traveling hydraulic pump, and driving wheels driven by the hydraulic motor. An accelerator opening is calculated by correcting an accelerator opening detected by an accelerator opening sensor, using a greater one of a first cut-off frequency calculated from the accelerator opening detected by the accelerator opening sensor, and a second cut-off frequency calculated from a corrected accelerator opening calculated at a timing before the first cut-off frequency is calculated.
Abstract translation: 本发明提供了一种配备有由发动机驱动的可变排量行驶液压泵的液压泵，液压马达与其中的行驶液压泵形成闭合回路，并由从行驶液压泵排出的液压油驱动，驱动轮由 液压马达。 通过使用从由加速器开度传感器检测到的加速器开度计算的第一截止频率和由从加速器开度传感器检测出的加速器开度计算出的第二截止频率中的更大的一个来校正由加速器开度传感器检测到的加速器开度， 计算在第一截止频率之前的定时计算出的校正加速器开度。
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Patent Agency Ranking
公开(公告)号：US20150232312A1
公开(公告)日：2015-08-20
申请号：US14359188
申请日：2013-12-27
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko , Taishi Oiwa
CPC classification number: B66F9/07572 , B60K6/00 , B66F9/22 , F16H59/18 , F16H61/431 , F16H61/468
Abstract: Provided is a forklift equipped with a variable displacement traveling hydraulic pump driven by an engine, a hydraulic motor that forms a closed circuit with the traveling hydraulic pump therebetween and is driven by hydraulic oil discharged from the traveling hydraulic pump, and driving wheels driven by the hydraulic motor. An accelerator opening is calculated by correcting an accelerator opening detected by an accelerator opening sensor, using a greater one of a first cut-off frequency calculated from the accelerator opening detected by the accelerator opening sensor, and a second cut-off frequency calculated from a corrected accelerator opening calculated at a timing before the first cut-off frequency is calculated.
Abstract translation: 本发明提供了一种配备有由发动机驱动的可变排量行驶液压泵的液压泵，液压马达与其中的行驶液压泵形成闭合回路，并由从行驶液压泵排出的液压油驱动，驱动轮由 液压马达。 通过使用从由加速器开度传感器检测到的加速器开度计算的第一截止频率和由从加速器开度传感器检测出的加速器开度计算出的第二截止频率中的更大的一个来校正由加速器开度传感器检测到的加速器开度， 计算在第一截止频率之前的定时计算出的校正加速器开度。
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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
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.
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公开(公告)号：US09676600B2
公开(公告)日：2017-06-13
申请号：US14364178
申请日：2013-12-27
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko , Taishi Oiwa
CPC classification number: B66F9/07572 , B66F9/072 , B66F9/22 , F16H61/431
Abstract: A forklift equipped with a variable displacement traveling hydraulic pump driven by an engine, a hydraulic motor that forms a closed circuit with the traveling hydraulic pump therebetween and is driven by hydraulic oil discharged from the traveling hydraulic pump, and driving wheels driven by the hydraulic motor, when an accelerator opening detected by an accelerator opening sensor is reduced, the accelerator opening detected by the accelerator opening sensor and a target maximum absorption torque of the traveling hydraulic pump are given to a table on which a setting value calculated in advance depending on the accelerator opening, and the target maximum absorption torque of the traveling hydraulic pump or a vehicle speed of the forklift is described to calculate the setting value, and the accelerator opening detected by the accelerator opening sensor is corrected using the obtained setting value to calculate a corrected accelerator opening.
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公开(公告)号：US09643826B2
公开(公告)日：2017-05-09
申请号：US14427818
申请日：2014-09-18
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko , Taishi Oiwa , Yoshio Yokouchi , Hideyuki Hiraiwa , Hiroshi Yamamoto
IPC: G06F7/70 , G06F19/00 , G06G7/00 , B66F9/075 , E02F9/22 , B66F9/20 , F02D29/04 , B66F9/22 , F02D29/02 , F02D41/10 , F02D41/30 , B66F9/07
CPC classification number: B66F9/07572 , B66F9/07 , B66F9/20 , B66F9/22 , E02F9/2246 , F02D29/02 , F02D29/04 , F02D41/10 , F02D41/3005
Abstract: A forklift includes a hydraulic pump being a variable displacement pump driven by an engine, a hydraulic motor driven with fluid from the pump, a storage storing first and second groups, and a predetermined lift pressure setting value, the first group including output characteristics each representing relation between a rotational speed of the engine and a torque of the engine for each lift pressures, the second group including output characteristics each representing relation between the rotational speed and the torque for each pump pressures, and determining a greater one of first and second torques as a target torque of the engine, the first torque being calculated from one selected from the first group using the lift pressure setting value or an actual lift pressure and the rotational speed, the second torque being calculated from one selected from the second group using the pump pressure and the rotational speed.
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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。
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