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公开(公告)号：US20230389468A1
公开(公告)日：2023-12-07
申请号：US18321063
申请日：2023-05-22
发明人： Fumiaki ITO , Masato ARATA
IPC分类号： A01D34/00
CPC分类号： A01D34/008 , A01D2101/00
摘要： [Problem] In a control system for an electric work vehicle, when a cruise switch is turned on, a vehicle is shifted more quickly to an operation that reflects a driver's intention.[Solution] The control system includes a control device that controls a rotation speed of a traveling motor on the basis of an operation position of a travel instruction tool and a cruise switch that instructs execution of a cruise mode in which a rotation speed of the traveling motor is controlled by an ON operation so that a set vehicle speed is stored, and that traveling is maintained without an operation of the travel instruction tool. The control device executes the cruise mode when the cruise switch is turned on and a predetermined condition is satisfied, cancels the cruise mode when the cruise switch is turned on, but the predetermined condition is not satisfied, and if it is determined that there is no operation of the travel instruction tool after the cancellation of the cruise mode, the rotation speed of the traveling motor is stopped.
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公开(公告)号：US20210053435A1
公开(公告)日：2021-02-25
申请号：US16995975
申请日：2020-08-18
发明人： Fumiaki ITO , Koji KIYOOKA , Tasuku INOUE , Masato ARATA
摘要： A hybrid vehicle includes an engine that drives first wheel, and a motor that drives second wheel. The hybrid vehicle includes (1) a minute speed launch support mode where the hybrid vehicle is driven only by the motor as a drive source, (2) a sudden launch support mode where the hybrid vehicle is driven by the engine and motor as the drive source, and (3) a smooth launch support mode where the hybrid vehicle is driven only by the motor as the drive source in an early stage, is driven by the engine and motor in a middle stage, and is driven only by the engine in a late stage, and if an operation amount of an acceleration instruction unit is not 0 or is substantially not 0, any one of the support modes is executed according to an operation status of the acceleration instruction unit.
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公开(公告)号：US20170120899A1
公开(公告)日：2017-05-04
申请号：US15341452
申请日：2016-11-02
IPC分类号： B60W20/40 , B60K6/48 , B60K6/52 , F16H37/02 , B60W10/02 , B60W10/06 , B60W10/08 , B60K6/36 , B60K6/40
CPC分类号： F16H37/021 , B60K6/36 , B60K6/387 , B60K6/40 , B60K6/405 , B60K6/48 , B60K6/52 , B60K6/543 , B60K2006/4808 , B60K2006/4816 , B60K2006/4825 , B60K2006/4833 , B60W10/02 , B60W10/06 , B60W10/08 , B60W2710/021 , B60Y2200/92 , B60Y2300/42 , B60Y2300/43 , B60Y2400/82 , F16H2037/026 , Y02T10/6221 , Y02T10/6256 , Y02T10/626 , Y02T10/6265 , Y02T10/6286 , Y10S903/909 , Y10S903/916 , Y10S903/93 , Y10S903/946
摘要： A transaxle may include a motor, an input shaft, first and second output shafts, and first and second clutches. The input shaft has first and second ends. The first end of the input shaft is structured to receive an engine power from an engine. The second end of the input shaft is structured to receive motor power from the motor. The first output shaft is driven by power outputted from the input shaft. The second output shaft is driven by the motor power. The second output shaft is extended coaxially to the input shaft. The first clutch is interposed between the motor and the input shaft. The second clutch is interposed between the motor and the second output shaft. The first clutch and the second clutch are coaxially disposed between the second end of the input shaft and an axial end of the second output shaft.
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公开(公告)号：US20240016081A1
公开(公告)日：2024-01-18
申请号：US18330556
申请日：2023-06-07
发明人： Fumiaki ITO , Kohei OGURA
IPC分类号： A01D34/00
CPC分类号： A01D34/006 , A01D2101/00
摘要： [Problem] In a control system for a work vehicle, safety when a backward work permission switch is operated OFF is further enhanced.
[Solution] A control system for a work vehicle includes a control device that controls driving of a work implement in accordance with an operation of a work operation unit and forcibly stops the work implement when the work vehicle travels backward, and a backward work permission switch that disables forced stopping of the work implement at a start of backward traveling of the work vehicle by an ON operation performed by a user. In a case where the backward work permission switch is operated ON and the work operation unit is operated ON, the control device drives the work implement when the work vehicle travels backward and, in a case where the backward work permission switch is operated OFF and the work operation unit is operated ON, the control device forcibly stops the work implement both when the work vehicle is traveling backward and when the work vehicle is shifted from a backward traveling state to a stop state.-
公开(公告)号：US20240328490A1
公开(公告)日：2024-10-03
申请号：US18619295
申请日：2024-03-28
发明人： Takumi TAKAHASHI , Kohei OGURA , Fumiaki ITO , Tasuku INOUE
CPC分类号： F16H37/022 , F16H61/04
摘要： [Problem] A transmission structure that may improve a traveling feeling when a drive traveling state is interrupted in traveling and then the drive traveling state is resumed is provided. [Solution] A control device actuates a clutch actuator so that only a clutch mechanism on a most downstream side in a transmission direction in a selected shift gear is brought to a disengaged state when receiving a power cut-off signal in a state in which a traveling state change member is subjected to a forward operation or a reverse operation, and, actuates the clutch actuator so that only the clutch mechanism on the most downstream side in the transmission direction in the selected presumed shift gear is brought to a disengaged state based on a traveling state, and in addition, actuates a gear shift actuator so that a gear ratio of a continuously variable transmission mechanism that realizes a vehicle speed at that time point in the presumed shift gear is obtained while the power cut-off signal is valid, and actuates the clutch actuator so that the clutch mechanism on the most downstream side in the transmission direction in the presumed shift gear at that time point is brought to an engaged state when a cancel signal for canceling the power cut-off signal is input.
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公开(公告)号：US20230391220A1
公开(公告)日：2023-12-07
申请号：US18321882
申请日：2023-05-23
发明人： Masato ARATA , Fumiaki ITO
CPC分类号： B60L53/62 , B60L58/20 , B60L53/22 , B60L50/51 , B60L2210/10 , B60L2200/40
摘要： [Problem] In a control system for an electric work vehicle, a space for a size increase of other components such as a high-voltage battery is increased, and a labor for battery replacement is reduced by eliminating a need for mounting a low-voltage battery. [Solution] The control system includes a traveling motor to which power is fed from a battery via a main switch, a control device which controls an ON/OFF state of the main switch, and a first start switch connected between an output side of a DC-DC converter and the control device and is configured such that a primary side of the main switch is connected to an input side of the DC-DC converter with a second start switch interposed, and the control device is started by an output voltage of the DC-DC converter by an operation of the second start switch to an energized position. The control device turns on the main switch and maintains the state when the second start switch is operated to an energized position and the first start switch is at an operation position to the energized position.
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公开(公告)号：US20240328495A1
公开(公告)日：2024-10-03
申请号：US18592621
申请日：2024-03-01
发明人： Takumi TAKAHASHI , Kohei OGURA , Fumiaki ITO , Tasuku INOUE
CPC分类号： F16H47/04 , F16H61/0403 , F16H61/0437
摘要： The problem is in providing a transmission structure which includes low gear and high gear transmission mechanisms and an HST and can improve the vehicle speed responsiveness at the time of switching between a low gear transmission state and a high gear transmission state. Solution: At the time of switching between low gear and high gear transmission states, the present invention creates an idling state in which the power transmission state from a drive source to a drive wheel is cut off, and calculates an excess vehicle speed HST gear ratio by adding an excess correction value, which is for changing the vehicle speed at the switching completion point in time in excess of the actual vehicle speed by a predetermined speed, to an actual vehicle speed ratio, which represents an HST gear ratio that causes the vehicle speed at the switching completion point in time to match the actual vehicle speed attained immediately before the completion of the switching, so as to operate an HST actuator using the excess vehicle speed HST gear ratio as a control target value during the idling state.
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公开(公告)号：US20190047399A1
公开(公告)日：2019-02-14
申请号：US16058241
申请日：2018-08-08
发明人： Takashi NISHIZAWA , Tasuku INOUE , Hiroaki HASHIMA , Yoshitaka KOCHIDOMARI , Fumiaki ITO , Masato ARATA , Koga YAMANE
摘要： An axle driving apparatus may include a first rotary shaft connected to an internal combustion engine; a second connected to an electric motor; a third rotary shaft connected to a driving shaft of a wheel; an interlocking unit interlocking the first, second, and third rotary shaft; and an input and output switchover unit. The interlocking unit and the input and output switchover unit are structured to switch the interlocking unit between a first mode in which only the power of the internal combustion engine is output from the third rotary shaft, a second mode in which only the power of the electric motor is output from the third rotary shaft, a third mode in which the power of the internal combustion engine and the power of the electric motor are combined and output from the third rotary shaft, and a fourth mode in which the power of the internal combustion engine is output from the second rotary shaft to the electric motor.
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