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公开(公告)号：US09694679B2
公开(公告)日：2017-07-04
申请号：US14796262
申请日：2015-07-10
Applicant: Kubota Corporation
Inventor： Akihiro Matsuzaki , Satoshi Yoshikawa , Michita Kono
CPC classification number: B60K23/08 , B60K28/16 , B60K28/165 , B60K2023/0858 , B60W10/06 , B60Y2200/221 , B60Y2300/181 , B60Y2300/18175
Abstract: A drive control system for a work vehicle is provided with a power transmission device that drives front wheels and rear wheels, a request determination unit, and a drive mode control unit. The power transmission device has a drive mode switching mechanism that performs drive mode switching between a four-wheel drive mode in which drive power is transmitted to front wheels and rear wheels and a two-wheel drive mode in which drive power is transmitted to only the rear wheels. The request determination unit determines a necessity for an increase in drive power on a contact area of the work vehicle, and outputs an increase request based on the determination result. The drive mode control unit outputs a drive mode switching request for switching to the four-wheel drive mode to the drive mode switching mechanism, in response to output of the increase request.
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公开(公告)号：US12065198B2
公开(公告)日：2024-08-20
申请号：US17944794
申请日：2022-09-14
Applicant: KUBOTA CORPORATION
Inventor： Takashi Kosaki , Takuya Inamori , Yoshihiko Kuroshita , Michita Kono , Yuji Imanaga
CPC classification number: B62D49/0692 , B60N2/797 , B60K2026/027 , B60K2026/029 , B62D49/06
Abstract: A working vehicle includes an operator seat and an armrest arranged on a side of the operator seat. The armrest includes an upper surface on which an operation tool arrangement portion is arranged, the operation tool arrangement portion arranging an operation tool, and a side surface having a concave portion. The concave portion is located on an area overlapping, in a front-to-back direction, with another area including the operation tool arrangement portion.
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公开(公告)号：US20160046278A1
公开(公告)日：2016-02-18
申请号：US14342854
申请日：2013-03-14
Applicant: KUBOTA CORPORATION
Inventor： Yushi Matsuzaki , Yoshitomo Fujimoto , Michita Kono , Shigeki Hayashi , Atsushi Shinkai , Keishiro Nishi , Hisao Mukai
CPC classification number: B60W20/10 , B60K6/12 , B60K6/485 , B60K6/547 , B60K17/10 , B60K17/28 , B60K25/06 , B60L11/14 , B60L11/1862 , B60L15/2054 , B60L2200/40 , B60L2240/421 , B60L2240/423 , B60L2240/441 , B60L2240/443 , B60L2240/547 , B60L2240/549 , B60L2250/12 , B60L2250/26 , B60W10/06 , B60W10/08 , B60W10/10 , B60W10/103 , B60W10/11 , B60W10/30 , B60W20/19 , B60W30/18027 , B60W30/192 , B60W2510/06 , B60W2710/08 , B60W2710/10 , B60W2710/30 , B60Y2200/221 , B60Y2300/423 , F02D29/02 , Y02T10/6226 , Y02T10/6286 , Y02T10/645 , Y02T10/70 , Y02T10/7005 , Y02T10/7044 , Y02T10/705 , Y02T10/7077 , Y02T10/72 , Y02T10/7275 , Y10S903/919 , Y10S903/93
Abstract: Disclosed is a hybrid work vehicle capable of smooth work travel using a work device with a low output internal combustion engine, while avoiding battery exhaustion. The vehicle includes an internal combustion engine that supplies drive power to a travel device and a work device via power transmission means, a motor generator that is driven by a battery, a load information generation part that generates load information representing a sudden increase in rotational load, an assist characteristic determination part that determines motor assist characteristics defining an assist amount and an assist time period of assist control based on load information, and a motor control unit that controls the motor generator based on the motor assist characteristics.
Abstract translation: 公开了一种能够使用具有低输出内燃机的工作装置平滑工作行驶的混合动力车辆，同时避免电池耗尽。 车辆包括：内燃机，其通过动力传递装置向行驶装置和作业装置供给驱动力，由电池驱动的电动发电机;负载信息生成部，其生成表示旋转负载突然增加的负载信息 辅助特性确定部，其基于负载信息确定确定辅助量的辅助量和辅助时间段的电动机辅助特性;以及基于所述电动机辅助特性来控制所述电动发电机的电动机控制部。
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公开(公告)号：US11247557B2
公开(公告)日：2022-02-15
申请号：US16893490
申请日：2020-06-05
Applicant: KUBOTA CORPORATION
Inventor： Hitoshi Azuma , Tetsuo Yamaguchi , Shinji Ohara , Yoshihiko Kuroshita , Michita Kono
Abstract: A working vehicle includes a PTO shaft to transmit power of a propulsion shaft, a PTO clutch including a first rotor to be rotated by the power of the propulsion shaft, a second rotor to transmit the power to the PTO shaft, a press to be moved by a pressure of operation fluid between an engaging side on which the first rotor is engaged with the second rotor and a disengaging side, and a PTO brake to brake the PTO shaft when the press is positioned on the disengaging side, a control valve to control the pressure of the operation fluid to be applied to the PTO clutch, a rate setter to set a reducing rate at which the pressure of the operation fluid is reduced, and a controller to control the control valve based on the reducing rate.
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公开(公告)号：US09776615B2
公开(公告)日：2017-10-03
申请号：US14342854
申请日：2013-03-14
Applicant: Kubota Corporation
Inventor： Yushi Matsuzaki , Yoshitomo Fujimoto , Michita Kono , Shigeki Hayashi , Atsushi Shinkai , Keishiro Nishi , Hisao Mukai
IPC: B60K25/06 , B60K6/547 , B60W10/08 , B60W10/11 , B60W10/30 , B60W20/00 , B60W20/10 , B60K6/485 , B60L11/14 , B60W10/06 , B60W10/103 , B60W30/192 , B60L11/18 , B60L15/20 , B60W20/19 , B60K6/12 , B60W10/10 , B60W30/18 , F02D29/02 , B60K17/28
CPC classification number: B60W20/10 , B60K6/12 , B60K6/485 , B60K6/547 , B60K17/10 , B60K17/28 , B60K25/06 , B60L11/14 , B60L11/1862 , B60L15/2054 , B60L2200/40 , B60L2240/421 , B60L2240/423 , B60L2240/441 , B60L2240/443 , B60L2240/547 , B60L2240/549 , B60L2250/12 , B60L2250/26 , B60W10/06 , B60W10/08 , B60W10/10 , B60W10/103 , B60W10/11 , B60W10/30 , B60W20/19 , B60W30/18027 , B60W30/192 , B60W2510/06 , B60W2710/08 , B60W2710/10 , B60W2710/30 , B60Y2200/221 , B60Y2300/423 , F02D29/02 , Y02T10/6226 , Y02T10/6286 , Y02T10/645 , Y02T10/70 , Y02T10/7005 , Y02T10/7044 , Y02T10/705 , Y02T10/7077 , Y02T10/72 , Y02T10/7275 , Y10S903/919 , Y10S903/93
Abstract: Disclosed is a hybrid work vehicle capable of smooth work travel using a work device with a low output internal combustion engine, while avoiding battery exhaustion. The vehicle includes an internal combustion engine that supplies drive power to a travel device and a work device via power transmission means, a motor generator that is driven by a battery, a load information generation part that generates load information representing a sudden increase in rotational load, an assist characteristic determination part that determines motor assist characteristics defining an assist amount and an assist time period of assist control based on load information, and a motor control unit that controls the motor generator based on the motor assist characteristics.
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Patent Agency Ranking
公开(公告)号：US09096127B2
公开(公告)日：2015-08-04
申请号：US14024366
申请日：2013-09-11
Applicant: Kubota Corporation
Inventor： Akihiro Matsuzaki , Satoshi Yoshikawa , Michita Kono
CPC classification number: B60K23/08 , B60K28/16 , B60K28/165 , B60K2023/0858 , B60W10/06 , B60Y2200/221 , B60Y2300/181 , B60Y2300/18175
Abstract: A drive control system for a work vehicle is provided with a power transmission device that drives front wheels and rear wheels, a request determination unit, and a drive mode control unit. The power transmission device has a drive mode switching mechanism that performs drive mode switching between a four-wheel drive mode in which drive power is transmitted to front wheels and rear wheels and a two-wheel drive mode in which drive power is transmitted to only the rear wheels. The request determination unit determines a necessity for an increase in drive power on a contact area of the work vehicle, and outputs an increase request based on the determination result. The drive mode control unit outputs a drive mode switching request for switching to the four-wheel drive mode to the drive mode switching mechanism, in response to output of the increase request.
Abstract translation: 工作车辆的驱动控制系统设置有驱动前轮和后轮的动力传递装置，请求确定单元和驱动模式控制单元。 动力传递装置具有驱动模式切换机构，其在驱动力传递到前轮和后轮的四轮驱动模式和仅向驱动力传递驱动力的两轮驱动模式之间进行驱动模式切换 后轮。 请求确定单元确定对工作车辆的接触区域的驱动功率的增加的必要性，并且基于确定结果输出增加请求。 响应于增加请求的输出，驱动模式控制单元向驱动模式切换机构输出切换到四轮驱动模式的驱动模式切换请求。
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公开(公告)号：US11674593B2
公开(公告)日：2023-06-13
申请号：US17496333
申请日：2021-10-07
Applicant: KUBOTA CORPORATION
Inventor： Hitoshi Azuma , Michita Kono , Hiroshi Sota
CPC classification number: F16H61/16 , F16H59/36 , F16H61/32 , F16H2003/008 , F16H2306/24
Abstract: A working vehicle includes: a vehicle body; a linkage device configured to link a working device to the vehicle body; a prime mover provided on the vehicle body; a traveling device configured to cause the vehicle body to travel; a transmission device configured to transmit power from the prime mover to the traveling device and perform a speed change process to change a speed of the vehicle body; an increase-in-speed detection device configured to detect an increase in speed of the vehicle body; and a speed change restraint unit configured such that, during the speed change process performed by the transmission device, when the increase in speed detected by the increase-in-speed detection device has become equal to or greater than a threshold, the speed change restraint unit stops the speed change process performed by the transmission device.
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公开(公告)号：US11541951B2
公开(公告)日：2023-01-03
申请号：US17081338
申请日：2020-10-27
Applicant: KUBOTA CORPORATION
Inventor： Takashi Kosaki , Takuya Inamori , Yoshihiko Kuroshita , Michita Kono , Yuji Imanaga
Abstract: A working vehicle includes an operator seat, an armrest arranged on a side of the operator seat, and a speed shifter to change a traveling speed. The armrest includes an operation lever to be swung back and forth to cause the speed shifter to perform acceleration and deceleration, and an operation switch to be pressed to cause the speed shifter to perform acceleration and deceleration.
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公开(公告)号：US11268614B2
公开(公告)日：2022-03-08
申请号：US16893491
申请日：2020-06-05
Applicant: KUBOTA CORPORATION
Inventor： Yoshihiko Kuroshita , Tetsuo Yamaguchi , Michita Kono , Hitoshi Azuma , Shinji Ohara
Abstract: A working vehicle includes a traveling clutch to be switched between an engaging state and a disengaging state, a brake to brake the traveling device according to an operation of a brake operator, and a controller to perform a braking control to perform the braking, and an auto-switching controller to switch the traveling clutch from the engaging state to the disengaging state. The controller performs a first processing to switch the traveling clutch from the engaging state to the disengaging state when the brake operator is operated in a case where the auto-switching control is valid and a vehicle speed is less than a threshold, and a second processing to prevent the traveling clutch from being switched from the engaging state to the disengaging state even when the brake operator is operated in a case where the vehicle speed is equal to or higher than the threshold.
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公开(公告)号：US20160001655A1
公开(公告)日：2016-01-07
申请号：US14796262
申请日：2015-07-10
Applicant: Kubota Corporation
Inventor： Akihiro Matsuzaki , Satoshi Yoshikawa , Michita Kono
CPC classification number: B60K23/08 , B60K28/16 , B60K28/165 , B60K2023/0858 , B60W10/06 , B60Y2200/221 , B60Y2300/181 , B60Y2300/18175
Abstract: A drive control system for a work vehicle is provided with a power transmission device that drives front wheels and rear wheels, a request determination unit, and a drive mode control unit. The power transmission device has a drive mode switching mechanism that performs drive mode switching between a four-wheel drive mode in which drive power is transmitted to front wheels and rear wheels and a two-wheel drive mode in which drive power is transmitted to only the rear wheels. The request determination unit determines a necessity for an increase in drive power on a contact area of the work vehicle, and outputs an increase request based on the determination result. The drive mode control unit outputs a drive mode switching request for switching to the four-wheel drive mode to the drive mode switching mechanism, in response to output of the increase request.
Abstract translation: 工作车辆的驱动控制系统设置有驱动前轮和后轮的动力传递装置，请求确定单元和驱动模式控制单元。 动力传递装置具有驱动模式切换机构，其在驱动力传递到前轮和后轮的四轮驱动模式和仅向驱动力传递驱动力的两轮驱动模式之间进行驱动模式切换 后轮。 请求确定单元确定对工作车辆的接触区域的驱动功率的增加的必要性，并且基于确定结果输出增加请求。 响应于增加请求的输出，驱动模式控制单元向驱动模式切换机构输出切换到四轮驱动模式的驱动模式切换请求。
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