Abstract: An electric work vehicle includes a carrier provided separately from a vehicle body for mounting/dismounting a battery, a carrier storage section provided in the vehicle body for attaching the carrier to the vehicle body, and an attachment mechanism for attaching/detaching the carrier to/from the carrier storage section.

Abstract: An electrically powered work vehicle includes a left driving wheel and a right driving wheel that are supported to a vehicle body, a left motor for driving the left driving wheel and a right motor for driving the right driving wheel, a steering wheel, an acceleration operation tool, a turning command calculation section for calculating a tuning command based on a steering operation amount of the steering wheel, a turning torque calculation section for calculating a turning torque based on the turning command, a vehicle speed command calculation section for calculating a vehicle speed command based on an acceleration operation amount of the acceleration operation tool, a vehicle speed torque calculation section for calculating a vehicle speed torque based on the vehicle speed command, and a speed command calculation section for calculating a left motor speed command and a right motor speed command based on the turning torque and the vehicle speed torque.

Abstract: An electric work vehicle of the present invention includes a left drive wheel and a right drive wheel that are supported to a vehicle body, a left motor that drives the left drive wheel and a right motor that drives the right drive wheel, a traveling motor control unit that controls the left motor and the right motor independently based on steering signals from a steering unit, and a turn response enhancement unit. The turn response enhancement unit gives, to the traveling motor control unit, additional control amounts for the left motor and the right motor so as to improve turning response during turning of the vehicle body.

Abstract: Disclosed is a work vehicle management system including: a battery work information generation unit that generates battery work information indicating a use state of a battery during work of a work vehicle; a battery deterioration information generation unit that chronologically diagnoses the battery work information to generate battery deterioration information that indicates a deterioration trend of the battery that is unique to the work vehicle; and a notification unit that performs notification of the battery deterioration information to a manager of the work vehicle.

Abstract: A self-propelled vehicle includes a maneuvering unit, a drive unit including first and second drive sections, which are driven and controlled by drive wheel control commands, a drive wheel unit including left and right drive wheels driven by the first and second drive sections, respectively, at least one caster wheel which is controlled by a caster wheel control command, a bank detector for detecting a degree of bank of the vehicle and a control unit including a drive wheel control section for generating the drive wheel control commands. The control unit further includes a caster wheel control section which generates the caster wheel control command for controlling the steering angle of the caster wheel during a bank traversing travel, based on the bank degree so as to resolve a difference between a target travel and the actual travel which occurs during the bank traversing travel.

Abstract: A mower unit 3 includes a rotational shaft extending upwards through a top wall of a mower deck, a cutter blade attached to a lower portion of the rotational shaft, a mower motor 4 having a rotor 43 disposed upward and a coil 42 disposed downward along an axial direction of an output shaft 41, a mount deck 5 having a horizontal mounting face for mounting the mower motor 4 in such a manner that the output shaft 41 assumes a vertical posture, the mount deck protruding outwards from a side wall of the mower deck, and a cooling arrangement 50 incorporated in the mound deck 5 for discharging heat of the mower motor 4.

Abstract: An electric travelling vehicle including: a motor controller configured to control an electric motor based on displacement of a steering operation part to a forward travel position, a neutral position, and a rearward travel position, a brake controller configured to bring an electromagnetic power-off brake into a released state or a braking state; and a travel state detector configured to detect a travelling state that is accompanied with the released state, a stopped state that is accompanied with the braking state, and a transit stopped state that is accompanied with the braking state.

Abstract: A mower includes a rotary blade cutting grass due to being rotationally driven. A work motor rotationally drives the rotary blade. A mower deck houses the rotary blade in an interior thereof. A first shroud forms an air flow passage along the work motor. The air flow passage connects the interior and exterior of the mower deck.

Abstract: An electric work vehicle includes: a battery accommodating portion that is provided in the vehicle body and accommodates a battery; a first connector provided on the battery accommodating portion; a second connector provided on the battery; and an operating tool for moving the battery and the second connector, and switching from a pre-attachment orientation in which the second connector opposes the first connector to an attachment orientation in which the second connector is joined to the first connector.

Abstract: A battery pack monitoring system is provided with: a battery pack that includes a battery unit capable of supplying electric power to an electric-powered work vehicle, and can be attached to and detached from the electric-powered work vehicle; a detection mechanism configured to detect the state inside the battery pack or the state of the environment surrounding the battery pack with the battery pack detached from the electric-powered work vehicle; a detection mechanism power supply that is separate from the battery unit, and is capable of supplying electric power to the detection mechanism; a notification signal output unit configured to output a notification signal based on a result of the detection performed by the detection mechanism; and a notification device configured to perform notification based on the notification signal output by the notification signal output unit.

Abstract: This disclosure is intended to suppress a noble metal supported by a three-way catalyst from being deteriorated by oxidation with the execution of fuel cut processing in a suitable manner. A control apparatus for a naturally aspirated gasoline engine is provided with a three-way catalyst, a first throttle valve, a second throttle valve arranged in the intake passage at the downstream side of the first throttle valve, an EGR valve, and a controller. When the controller carries out fuel cut processing and the temperature of the three-way catalyst is equal to or higher than a predetermined temperature, the controller introduces the EGR gas into a cylinder of the gasoline engine as intake air by fully closing the first throttle valve and by opening the EGR valve, and further controls an amount of the EGR gas by adjusting the degree of opening of the second throttle valve.

Abstract: A grass mower includes a vehicle speed instruction value calculation section (53) for generating a vehicle speed instruction value including a maximal vehicle speed, based on an operational position of a man-operable vehicle speed controlling tool (15), a mode selection section (70) for selecting a control mode from a plurality of control modes, a control table (52) in which a plurality of control parameters are set, a vehicle speed control target value calculation section (54) configured to calculate a vehicle speed control target value, based on a vehicle speed instruction value generated by the vehicle speed instruction value calculation section (53) and a selected control parameter corresponding to the control mode selected by the mode selection section (70), a cutter blade control target value calculation section (55) configured to calculate a rotational speed control target value for a cutter blade (30), based on the selected control parameter, and a cutter blade control section (4B) configured to contr

Abstract: Disclosed is a mower unit including, on a mower deck that rotatably supports a blade, a deck-side electric component configured to drive the blade, and a joint section for effecting connection and disconnection of a harness that electrically connects the deck-side electric component to a vehicle body-side electric component.

Abstract: An electric work vehicle includes a carrier provided separately from a vehicle body for mounting/dismounting a battery, a carrier storage section provided in the vehicle body for attaching the carrier to the vehicle body, and an attachment mechanism for attaching/detaching the carrier to/from the carrier storage section.

Abstract: An electric work vehicle includes: an electric motor unit including a plurality of motors (21, 22, and 130); a motor control unit (50) that adjusts electric power from a battery (20) and supplies the adjusted electric power to the electric motor unit by controlling an inverter (4); a charge control section (53) that controls charging and discharging of the battery (20); a battery state detection device (9) that detects a state of the battery (20) including a rate of charge; and a regenerative electric power detection device (6) that detects a generation of regenerative electric power.

Abstract: An object is to supply fresh air and EGR gas into a cylinder in good balance according to the required load in a naturally aspirated gasoline engine. When the operation state of the engine falls in a low load range, a control apparatus adjusts the degree of opening of the second throttle while keeping the first throttle fully open and controls EGR gas quantity by adjusting the degree of opening of the EGR valve. When the operation state falls in a middle load range, the apparatus controls EGR gas quantity by adjusting the degree of opening of the first throttle while keeping the EGR valve fully open. When the operation state falls in a high load range, the apparatus adjusts the degree of opening of the first throttle while keeping the second throttle fully open and controls EGR gas quantity by adjusting the degree of opening of the EGR valve.

Abstract: An electric work vehicle includes a left frame and a right frame extending in a vehicle fore/aft direction, a battery assembly mounted between the left frame and the right frame, a left rear wheel mounted outward of the left frame in a vehicle lateral direction, a right rear wheel mounted outward of the right frame in the vehicle lateral direction, a left motor mounted outward of the left frame in the vehicle lateral direction and forward of an axis of the left rear wheel for transmitting rotary driving power to the left rear wheel, and a right motor mounted outward of the right frame in the vehicle lateral direction and forward of an axis of the right rear wheel for transmitting rotary driving power to the right rear wheel.

Abstract: A traveling vehicle including a traveling machine body supported by a pair of left and right driving wheels; a pair of left motor and the right motor configured to independently drive the driving wheels; a riding part disposed behind the traveling machine body and connected to the traveling machine body, and configured to enable riding of a worker; a handle connected to the traveling machine body so as to be swingable left and right with respect to the traveling machine body; a plurality of load sensors for detecting a forward and backward weight shift of the worker who is riding on the riding part; a rotation angle sensor for detecting a leftward and rightward swinging operation amount of the handle; and a controller for controlling operation of the left and right motors based on detection values by the plurality of load sensors and the rotation angle sensor.

Abstract: A work vehicle includes a battery that outputs a DC power, at least two electric motors, and at least two inverters, each inverter being configured to convert the DC power from the battery into an AC power and to supply the AC power to one of the electric motors. The work vehicle further includes an accommodation box attachable/detachable to/from the vehicle body, the accommodation box accommodating a plurality of electrical equipments including the inverters.

Abstract: An electric work vehicle includes: a battery pack that is arranged between a left rear wheel arranged outside of a left frame and a right rear wheel arranged outside of a right frame, the front end of the battery pack being located forward of an axle center of a rear wheel unit; a left motor that is arranged above the battery pack, in the periphery of the left rear wheel, receives a supply of power from the battery pack, and transmits rotational power to the left rear wheel; and a right motor that is arranged above the battery pack, in the periphery of the right rear wheel, receives a supply of power from the battery pack, and transmits rotational power to the right rear wheel.