Abstract: A lawn mower includes: a mower unit having a plurality of blades for performing lawn mowing work, the plurality of blades being driven by rotational power, a blade motor configured to transmit rotational power to each of the plurality of blades, and be capable of optionally changing the rotation number of the rotational power transmitted to each of the plurality of blades; and a controller configured to detect respective speeds of the plurality of blades to the ground and perform energy-saving control of increasing and decreasing the rotation number of the rotational power transmitted to each of the plurality of blades in accordance with increase and reduction in the detected speed of each of the plurality of blades.

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: A semiconductor device includes an n-type base substrate; a p-type first region; a p-type surface region having a plurality of second corner portions and a plurality of second side portions surrounding the first region. The p-type surface region has a dopant concentration lower than a dopant concentration of the first region. The semiconductor device further includes a field plate in a region overlapping with the surface region in a plan view by way of an insulation film. The field plate has a plurality of field plate corner portions and a plurality of field plate side portions. A relationship of L1>L2 is established at least at a portion of the surface region or a relationship of FP1>FP2 is established at least at a portion of the field plate is satisfied. A withstand voltage of the second side portion is lower than a withstand voltage of the second corner portion.

Abstract: Provided is a battery connector assembly that allows adaptation of a connector of a battery to both a connector of an electric work vehicle and a connector of a charger. The assembly includes, in a connector assembly box, a battery connecting connector removably connected to a battery side connector having a plurality of terminals to be connected to the battery a vehicle connecting connector removably connected to a vehicle side connector having a plurality of terminals to be connected to the electric work vehicle and a charger connecting connector removably connected to a charger side connector provided in a charger for charging power supplied from an external power source to the battery and having a plurality of terminals.

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.

Abstract: A portable charger device 200 includes a charger device side battery 3, a first charging control section 31 for non-quick charging of the charger device side battery 3 by power supply from an external power source 8, and a second charging control section 32 for quick charging of a vehicle side battery 4 mounted on an electric vehicle 100 by power supply from the charger device side battery 3.

Abstract: Provided is a traveling control device capable of appropriately controlling the turning and the speed of a traveling vehicle.

Abstract: A lawn mower includes a mower device provided between a pair of right and left front wheels and a pair of right and left rear wheels and configured to mow grass on a traveling land surface; a grass collecting container provided rearwardly of a vehicle body, a conveyer duct extending between the mower device and the grass collecting container as extending through between the pair of right and left rear wheels and configured to convey grass clippings discharged from the mower device to the grass collecting container; and a belt conveyer configured to convey the grass clippings discharged from the mower device toward the grass collecting container. The belt conveyer forms a conveying bottom face of the conveyer duct.

Abstract: Disclosed is an electric work vehicle that includes a traveling vehicle body, a wheel unit having wheels on the right and left sides of the traveling vehicle body, a motor for supplying rotational drive force to the wheel unit, and a battery for supplying electric power to the motor. The battery includes a first battery disposed at a right/left center of the traveling vehicle body, and second batteries disposed in right/left symmetricity on the traveling vehicle body to act as supplementary batteries.

Abstract: A grass mower machine includes a mower deck 30 that protrudes from a frame unit in a machine body transverse direction, cutter blades 20 attached respectively to a first rotation shaft 21, a second rotation shaft 22 and a third rotation shaft 23 that are disposed side by side and spaced apart from each other in the machine body transverse direction, a first power transmitting body 71 for transmitting power from an output shaft 41 of an electric motor 4 which is disposed on an outer side of rotation paths of the cutter blades 20 as seen in a plane view to the first rotation shaft 21, a second power transmitting body 72 for transmitting power from the first rotation shaft 21 to the second rotation shaft 22, and a third power transmitting body 73 for transmitting power from the second rotation shaft 22 to the third rotation shaft 23.

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.

Abstract: A grass mower is provided with a plurality of rotating shafts passing through a ceiling wall of a mower deck and extending upward, disposed in a side-by-side state; cutting blades respectively linked to the rotating shafts in an internal space of the mower deck; an electric motor mounted at a location to the lateral outside relative to a rotation path of the cutting blades within the mower deck, and having an output shaft extending upward; and a power transmission mechanism positioned above the ceiling wall of the mower deck, and configured to transmit power from the output shaft to the rotating shafts of the cutting blades.

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: Mower blade utilizes a blade portion formed on the blade main body and an air circulator portion formed on the blade main body and generating airflow via rotation centered around the vertically-oriented axis of the mower blade. The blade portion is arranged in a length-direction end portion of the blade main body and extends along a predetermined area in the length-direction. The air circulator portion is located opposite the blade portion in a width direction, has a rising upward portion, and extends along a predetermined area in the length-direction. A boundary portion is arranged between the blade main body and a rising upward portion of the air circulator portion has a portion inclined or angled with respect to the blade portion such that, beginning at the length-direction end portion, a distance between the boundary portion and the blade portion increases along the length-direction and moving toward the vertically-oriented axis.

Abstract: A mower includes a rotary grass cutting blade. A mower deck houses the rotary blade in an interior thereof. A motor has at least a portion thereof positioned or extending into the interior of the mower deck. The motor rotationally drives the rotary blade. A guide member can be utilized to form an air flow passage along the motor, with the air flow passage connecting the interior and exterior of the mower deck.

Abstract: A control device includes an electronic control unit. During deceleration of the engine, when a temperature of a three-way catalyst is equal to or higher than a predetermined temperature and execution conditions of fuel cut processing are established, the electronic control unit executes first control for closing an exhaust shutoff valve, while fuel injection and ignition are continued. When the exhaust shutoff valve reaches the closed state in the first control, the electronic control unit executes second control for bringing the engine into an intake control state in which the intake throttle is closed and an EGR valve is in a predetermined open state. In the second control, the electronic control unit executes the fuel cut processing by stopping the ignition before the engine is brought into the intake control state and stopping the fuel injection after the engine is brought into the intake control state.

Abstract: In an exhaust gas purification apparatus for an internal combustion engine which is provided with a supercharger, an exhaust gas purification catalyst, a bypass passage, a wastegate valve, and a flow regulating member for changing a direction of flow of exhaust gas, the exhaust gas purification catalyst and the flow regulating member are arranged in such a manner that when warming up the exhaust gas purification catalyst, bypass exhaust gas goes toward an upstream side end face of the exhaust gas purification catalyst, whereas when the internal combustion engine is operated in a predetermined high load region, the bypass exhaust gas goes toward the flow regulating member. The flow regulating member includes a guide portion that guides the exhaust gas thus impinged in a circumferential direction of an exhaust pipe, and the guide portion is formed with a plurality of through holes.

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.