Abstract: An agricultural tractor includes a vehicle frame, and a front housing supported by the vehicle frame. The front housing includes, a fixed housing portion fixed to the vehicle frame, a movable housing portion supported by the vehicle frame or the fixed housing portion and being openable and closeable.

Abstract: A work vehicle includes a driver seat, a fuel cell, at least one fuel tank to store fuel to be supplied to the fuel cell, a motor connected to the fuel cell, a vehicle frame supporting the driver seat, the fuel cell, and the motor, a mounting frame fixed to the vehicle frame to support the at least one fuel tank, the mounting frame extending across the driver seat, and a front housing covering the fuel cell and being openable and closable. The mounting frame does not interfere with the front housing when a position or orientation of the front housing changes from the closed state to the open state.

Abstract: A work vehicle includes a fuel cell power generation system, an inverter connected to the fuel cell power generation system, a motor connected to the inverter, and a vehicle frame supporting the fuel cell power generation system, the inverter, and the motor, the vehicle frame rotatably supporting left and right front wheels and left and right rear wheels. The vehicle frame includes a transmission case housing a transmission to transmit driving force from the motor to the rear wheels. The inverter is at a side of the transmission case.

Abstract: A work vehicle includes a fuel cell, and a fuel tank module including fuel tanks to store fuel to be supplied to the fuel cell, a valve system connected to the fuel tanks, and a tank case housing the fuel tanks and the valve system. The fuel tanks include a first fuel tank with a first length in a first direction, and second fuel tank with a second length shorter than the first length in the first direction. The first fuel tank and the second fuel tank are arranged in a second direction perpendicular or substantially perpendicular to the first direction. At least a portion of the valve system is in a space between the second fuel tank and the tank case inside the tank case.

Abstract: An agricultural work vehicle includes a fuel cell power generation system, a first voltage conversion circuit to convert a voltage output from the fuel cell power generation system to output a first voltage, and a second voltage conversion circuit to convert the voltage output from the fuel cell power generation system to output a second voltage higher than the first voltage.

Abstract: A vehicle management method is provided for managing an electric vehicle by using a management server based on vehicle-specific ID information that defines a condition of use transmitted from an onboard controller. The vehicle management method includes acquiring vehicle ID information from the electric vehicle by using the management server; determining the vehicle ID information to be valid if the vehicle ID information acquired falls within a use period set in advance and determining the vehicle ID information to be invalid if the vehicle ID information acquired falls outside a use period set in advance; and applying a prescribed limitation to charging of a battery of the electric vehicle having the vehicle ID information upon determining that the vehicle ID information is invalid.

Abstract: A vehicle management method is provided for managing an electric vehicle by using a management server based on vehicle-specific ID information that defines a condition of use transmitted from an onboard controller. The vehicle management method includes acquiring vehicle ID information from the electric vehicle by using the management server; determining the vehicle ID information to be valid if the vehicle ID information acquired falls within a use period set in advance and determining the vehicle ID information to be invalid if the vehicle ID information acquired falls outside a use period set in advance; and applying a prescribed limitation to charging of a battery of the electric vehicle having the vehicle ID information upon determining that the vehicle ID information is invalid.

Abstract: A device for restricting movement of a vehicle during connection of a charging cable, the vehicle being equipped with a battery chargeable from an external power source via the charging cable, the device including a charging cable connection detecting section that detects that the charging cable is in a connection state, a vehicle body movement detecting section that detects movement of a vehicle body of the vehicle based on moving speed and moving distance of the vehicle, and a braking section that brakes the vehicle when the movement of the vehicle body is detected while the charging cable is in the connection state based on signals from the charging cable connection detecting section and the vehicle body movement detecting section.

Abstract: A battery charging system includes a battery, a load and a controller to control supply power to be supplied from an external power source to the battery and the load, in accordance with a request charging power and a request load power. The controller limits power supplied from the external power source to the battery to an allowable battery power, and distributes the supply power from the external power source between the battery and the load in a state holding limitation of limiting the supply power from the external power source to the allowable battery power when a request for the supply of power to the load is generated.

Abstract: A torque response control apparatus for an electric motor of a vehicle comprises a motor torque response control means that is configured to carry out finding a difference between a required acceleration that is variable in accordance with a change of a vehicle driving condition and an actual acceleration that is obtained, at the time of the change of the vehicle driving condition, with the aid of a torque characteristic of the electric motor, the difference being caused by the torque characteristic of the electric motor in which the maximum torque is varied in accordance with a rotation speed of the electric motor; and controlling the torque response of the electric motor in a manner to cause a driver to feel the difference of the actual acceleration from the required acceleration to be small by compensating the difference between the required acceleration and the actual acceleration.

Abstract: A device for restricting movement of a vehicle during connection of a charging cable, the vehicle being equipped with a battery chargeable from an external power source via the charging cable, the device including a charging cable connection detecting section that detects that the charging cable is in a connection state, a vehicle body movement detecting section that detects movement of a vehicle body of the vehicle based on moving speed and moving distance of the vehicle, and a braking section that brakes the vehicle when the movement of the vehicle body is detected while the charging cable is in the connection state based on signals from the charging cable connection detecting section and the vehicle body movement detecting section.

Abstract: In an electrically driven vehicle propelled by an electric machine (motor)equipped with a collaborative braking system of regenerative and frictional braking capacities, in order to achieve the “rollback prevention” at starting on an sloping road, when the regenerative braking is not available due to charging restriction to battery, frictional braking is used instead of regenerative braking and wheels are (automatically, i.e. not manually by driver) braked with friction to prevent the rollback. Moreover, in addition to braking wheels by frictional braking, further control is performed to adjust and match the magnitude of frictional braking force to a braking force in accordance with the starting operation. Thus, at the time of rollback prevention by the frictional braking as well, the similar prevention of rollback will be possible as the prevention by way of regenerative braking such that the effect of rollback prevention may be achieved without a feel of discomfort.

Abstract: A vehicle speed VSP enters a creep-cutoff-prohibiting speed region lower than V1 with a forward creep torque being outputted (t1), and then this state continues for a time duration set corresponding to a timer value NTM1 (t2). At this time, a creep cutoff is prohibited by setting a creep-cutoff-prohibition flag NFLAG at “1”. A braking force becomes larger than or equal to a creep-cutoff-permitting braking-force value to satisfy a creep-cutoff permitting condition related to the braking force (t3) while a creep-cutoff permitting condition related to the vehicle speed has been satisfied because of almost zero of the vehicle speed VSP. In response thereto, the creep-cutoff permitting flag FLAG is set at 1 at t4. However, the creep toque continues to be outputted also after t4 without the creep cutoff, so that a torque reduction accompanied with strangeness feeling can be prevented.

Abstract: A vehicle moves unintentionally in a downwardly-reverse direction with a forward creep torque being outputted as shown by a time variation of vehicle speed VSP, and a braking is applied at timing t3 in order to prevent this downward movement. In this case, the downward movement in the reverse direction is detected at timing t1, and then this state continues for a duration set corresponding to a timer value NTM1. At timing t2, a creeping-cut is prohibited by setting a creeping-cut-prohibition flag NFLAG at “1”. At timing t3, the braking is started in order to prevent the reverse-directional downward movement. Thereby, at timing t5, the vehicle speed VSP becomes near 0. In response thereto, a conventional creeping-cut permitting flag FLAG is set at 1. However, the creep toque continues to be outputted also after t5 without the creeping-cut, so that a torque reduction accompanied with strangeness feeling can be prevented.

Abstract: In an electrically driven vehicle propelled by an electric machine (motor)equipped with a collaborative braking system of regenerative and frictional braking capacities, in order to achieve the “rollback prevention” at starting on an sloping road, when the regenerative braking is not available due to charging restriction to battery, frictional braking is used instead of regenerative braking and wheels are (automatically, i.e. not manually by driver) braked with friction to prevent the rollback. Moreover, in addition to braking wheels by frictional braking, further control is performed to adjust and match the magnitude of frictional braking force to a braking force in accordance with the starting operation. Thus, at the time of rollback prevention by the frictional braking as well, the similar prevention of rollback will be possible as the prevention by way of regenerative braking such that the effect of rollback prevention may be achieved without a feel of discomfort.

Abstract: A torque response control apparatus for an electric motor of a vehicle comprises a motor torque response control means that is configured to carry out finding a difference between a required acceleration that is variable in accordance with a change of a vehicle driving condition and an actual acceleration that is obtained, at the time of the change of the vehicle driving condition, with the aid of a torque characteristic of the electric motor, the difference being caused by the torque characteristic of the electric motor in which the maximum torque is varied in accordance with a rotation speed of the electric motor; and controlling the torque response of the electric motor in a manner to cause a driver to feel the difference of the actual acceleration from the required acceleration to be small by compensating the difference between the required acceleration and the actual acceleration.

Abstract: A vehicle moves unintentionally in a downwardly-reverse direction with a forward creep torque being outputted as shown by a time variation of vehicle speed VSP, and a braking is applied at timing t3 in order to prevent this downward movement. In this case, the downward movement in the reverse direction is detected at timing t1, and then this state continues for a duration set corresponding to a timer value NTM1. At timing t2, a creeping-cut is prohibited by setting a creeping-cut-prohibition flag NFLAG at “1”. At timing t3, the braking is started in order to prevent the reverse-directional downward movement. Thereby, at timing t5, the vehicle speed VSP becomes near 0. In response thereto, a conventional creeping-cut permitting flag FLAG is set at 1. However, the creep toque continues to be outputted also after t5 without the creeping-cut, so that a torque reduction accompanied with strangeness feeling can be prevented.

Abstract: A vehicle speed VSP enters a creep-cutoff-prohibiting speed region lower than V1 with a forward creep torque being outputted (t1), and then this state continues for a time duration set corresponding to a timer value NTM1 (t2). At this time, a creep cutoff is prohibited by setting a creep-cutoff-prohibition flag NFLAG at “1”. A braking force becomes larger than or equal to a creep-cutoff-permitting braking-force value to satisfy a creep-cutoff permitting condition related to the braking force (t3) while a creep-cutoff permitting condition related to the vehicle speed has been satisfied because of almost zero of the vehicle speed VSP. In response thereto, the creep-cutoff permitting flag FLAG is set at 1 at t4. However, the creep toque continues to be outputted also after t4 without the creep cutoff, so that a torque reduction accompanied with strangeness feeling can be prevented.

Abstract: A battery charging system includes a battery, a load and a controller to control supply power to be supplied from an external power source to the battery and the load, in accordance with a request charging power and a request load power. The controller limits power supplied from the external power source to the battery to an allowable battery power, and distributes the supply power from the external power source between the battery and the load in a state holding limitation of limiting the supply power from the external power source to the allowable battery power when a request for the supply of power to the load is generated.

Abstract: When a non-running range is changed into a running range at timing t2 during the execution of creeping-cut (t1˜t4), a flag FLAG is set at 1 and a timer T is reset. Then, the timer T is incremented to measure a time elapsed from timing t2. If the running range is a forward range, an electric motor outputs a play-reducing torque in a forwardly rotational direction as shown by a solid line for a time period between timing t2 and timing t3 for which the timer T is smaller than a set time T1, because the flag FLAG indicates 1. If the running range is a reverse range, the electric motor outputs the play-reducing torque in a reversely rotational direction as shown by a dotted line, because the flag FLAG indicates 1.