Abstract: A marine vessel that is able to inform a vessel operator that an attachment is attached includes a hull and a controller configured or programmed to function as a judging unit to judge whether or not an attachment that is attachable and detachable to and from the hull is attached to the hull, and to function as a notifying unit to, in a case of being judged by the judging unit that the attachment is attached, execute a notification process to notify the vessel operator that the attachment is attached to the hull.

Abstract: To provide a control method of a working machine, a working machine control program, a working machine control system, and a working machine that easily suppress working machine movement not intended by an operator. A control method of a working machine is a control method of the working machine having an interference avoidance function of controlling an operation of a working unit so as to avoid interference of the working unit with a driving unit. This control method includes executing the disabling startup processing of enabling the working unit to operate in a state where the interference avoidance function is disabled when the specific condition including that the first manipulation is performed at the time of startup of the working machine by the startup manipulation is satisfied.

Abstract: To provide a control method of a working machine, a working machine control program, a working machine control system, and a working machine that make it easy for an operator to recognize an attachment being mounted. A control method of a working machine is a control method of a working machine capable of replacing an attachment of a working unit. This control method includes displaying, on a display device, attachment information related to the attachment being mounted at the time of startup of the working machine by a startup manipulation.

Abstract: To provide a control method of a working machine, a working machine control program, a working machine control system, and a working machine that easily suppress working machine movement not intended by an operator. A control method of a working machine includes: displaying, on a display device, a setting screen for receiving setting information for any setting item related to the working machine; displaying, on the display device, a first image serving as guidance for a specific manipulation; applying the setting information for the setting item when the specific manipulation is performed; and displaying, on the display device, a second image instead of the first image when the setting information is applied.

Abstract: A clutch control device includes: a release shaft that actuates a clutch device; a clutch lever shaft to which manual operation is input; and a second driven gear that functions as an actuator actuating member to which a driving force of a clutch actuator is input. The release shaft is rotated by the clutch lever shaft and the second driven gear. The clutch lever shaft is arranged to be offset from an axis of the release shaft in an axial radial direction.

Abstract: This clutch control apparatus includes a clutch apparatus, a clutch actuator, and a release mechanism, wherein the release mechanism includes a release shaft that transmits a drive force of the clutch actuator to the clutch apparatus side, the release shaft is divided into: a clutch-side shaft that is supported by a clutch-side member as a separate body from the clutch actuator; and a control-side shaft that is supported by the clutch actuator and is attachable to and detachable from the clutch-side shaft, and the clutch actuator configures an integral actuator unit that includes the control-side shaft.

Abstract: A vehicle includes a controller configured to switch between a constant speed traveling mode in which a vehicle speed is held constant and an inertial traveling mode in which a prime mover is stopped or in an idling state, and a clutch apparatus configured to connect and disconnect power transmission between the prime mover and an output target, and the controller controls the clutch apparatus and decreases a clutch capacity so as to transit to the inertial traveling mode when detected that the vehicle is traveling on a downhill road during the constant speed traveling mode, and the controller controls the clutch apparatus and increases the clutch capacity so as to transit to the constant speed traveling mode when detected that the vehicle traveling on the downhill road has terminated.

Abstract: This clutch control apparatus includes: a clutch device; a clutch actuator; and a control unit, wherein the clutch actuator includes a plurality of electric motors and a transmission mechanism, wherein the plurality of electric motors are able to input a driving force to a common transmission element of the transmission mechanism, wherein the control unit detects at least one resistance value of the plurality of electric motors without driving a common transmission element by reversely driving a part of the plurality of electric motors and remaining electric motors, and wherein the control unit estimates a motor temperature from the resistance value and controls the driving of the plurality of electric motors according to the motor temperature.

Abstract: This clutch control apparatus includes a clutch apparatus, a clutch actuator, and a release mechanism, wherein the release mechanism includes a release shaft that transmits a drive force of the clutch actuator to the clutch apparatus side, the release shaft is divided into: a clutch-side shaft that is supported by a clutch-side member as a separate body from the clutch actuator; and a control-side shaft that is supported by the clutch actuator and is attachable to and detachable from the clutch-side shaft, and the clutch actuator configures an integral actuator unit that includes the control-side shaft.

Abstract: This clutch control device includes a clutch device connecting and disconnecting power transmission between a prime mover and an output target, a clutch actuator outputting a driving force for operating the clutch device, a release mechanism operating the clutch device by receiving a driving force of the clutch actuator, a control unit driving and controlling the clutch actuator, a first detection part detecting an output value of the clutch actuator, and second detection parts detecting an amount of operation of the release mechanism, in which the control unit controls an operation of the clutch actuator by selectively using detection information of the first detection part and detection information of the second detection parts.

Abstract: This clutch control device includes a clutch apparatus configured to connect and disconnect power transmission between a prime mover and an output target, a clutch actuator configured to output a driving force for actuating the clutch apparatus, and a driving mechanism configured to receive the driving force of the clutch actuator and actuate the clutch apparatus, and the driving mechanism is able to apply a driving force in either a disconnecting direction or a connecting direction to the clutch apparatus.

Abstract: To provide an operation system for a work machine, and a work machine in which it is easy to improve operability of a soil removal device. An operation system is an operation system for a work machine provided with a soil removal device including a blade. The operation system includes an operation lever, a first operation element, and a second operation element. The operation lever accepts a lifting operation for causing the blade to perform lifting movement. The first operation element accepts an operation for causing the blade to perform angle movement of rotationally swinging the blade around a first axis along a vertical direction. The second operation element accepts an operation for causing the blade to perform tilt movement of rotationally swinging the blade around a second axis along a horizontal direction. The first operation element and the second operation element are individually provided.

Abstract: This clutch control device includes a clutch device connecting and disconnecting power transmission between a prime mover and an output target, a clutch actuator outputting a driving force for operating the clutch device, a release mechanism operating the clutch device by receiving a driving force of the clutch actuator, a control unit driving and controlling the clutch actuator, a first detection part detecting an output value of the clutch actuator, and second detection parts detecting an amount of operation of the release mechanism, in which the control unit controls an operation of the clutch actuator by selectively using detection information of the first detection part and detection information of the second detection parts.

Abstract: This clutch control device includes a clutch apparatus configured to connect and disconnect power transmission between a prime mover and an output target, a clutch actuator configured to output a driving force for actuating the clutch apparatus, and a driving mechanism configured to receive the driving force of the clutch actuator and actuate the clutch apparatus, and the driving mechanism is able to apply a driving force in either a disconnecting direction or a connecting direction to the clutch apparatus.

Abstract: This clutch control device includes a clutch device configured to connect or disconnect power transmission between a prime mover and an output target, a clutch actuator configured to output a drive force for actuating the clutch device, and a control unit configured to control driving of the clutch actuator, in which the clutch actuator is provided with a drive source that outputs the drive force and a power transmission mechanism that is disposed between the drive source and the clutch device, and the control unit detects parameter values corresponding to friction of the clutch actuator on the basis of a delay in driving of the power transmission mechanism with respect to a change in a control parameter for the drive source, and controls driving of the drive source through use of a control parameter including at least a part of the parameter values corresponding to the friction.

Abstract: A clutch control device includes a clutch apparatus (26) configured to connect and disconnect power transmission between a prime mover (13) and an output object (21), a clutch actuator (50) configured to output a driving force for actuating the clutch apparatus (26), a controller (40) configured to control driving of the clutch actuator (50), and a clutch operator configured to operate the clutch apparatus (26) regardless of the driving of the clutch actuator (50), the controller (40) detects that there is a manual operation by the clutch operator when a difference of a predetermined value or more is detected between a reference output value of the clutch actuator (50) configured to operate the clutch apparatus (26) and a measured value of an output value of the clutch actuator (50).

Abstract: This clutch control device includes a clutch device configured to connect or disconnect power transmission between a prime mover and an output target, a clutch actuator configured to output a drive force for actuating the clutch device, and a control unit configured to control driving of the clutch actuator, in which the clutch actuator is provided with a drive source that outputs the drive force and a power transmission mechanism that is disposed between the drive source and the clutch device, and the control unit detects parameter values corresponding to friction of the clutch actuator on the basis of a delay in driving of the power transmission mechanism with respect to a change in a control parameter for the drive source, and controls driving of the drive source through use of a control parameter including at least a part of the parameter values corresponding to the friction.

Abstract: This clutch control apparatus includes: a clutch device; a clutch actuator; and a control unit, wherein the clutch actuator includes a plurality of electric motors and a transmission mechanism, wherein the plurality of electric motors are able to input a driving force to a common transmission element of the transmission mechanism, wherein the control unit detects at least one resistance value of the plurality of electric motors without driving a common transmission element by reversely driving a part of the plurality of electric motors and remaining electric motors, and wherein the control unit estimates a motor temperature from the resistance value and controls the driving of the plurality of electric motors according to the motor temperature.

Abstract: A water jet propulsion boat includes a hull, a drive source, a power storage, a jet propulsion mechanism, a power generator, and a controller. The hull includes a water inlet, a jet outlet, and a flow path connecting the water inlet and the jet outlet and including at least a main flow path extending from the water inlet to the jet outlet. The drive source is located in the hull, and the power storage supplies power to the drive source. The jet propulsion mechanism includes an impeller in the main flow path and driven by a driving force of the drive source to generate a water flow to generate a propulsive force to the hull. The power generator is located in the flow path and uses the water flow generated by the impeller to generate power. The controller charges the power storage with the power generated by the power generator.

Abstract: This clutch control device includes a clutch device configured to connect or disconnect power transmission between a prime mover and an output target, a clutch actuator configured to output a drive force for actuating the clutch device, and a control unit configured to control driving of the clutch actuator, in which the clutch actuator includes a plurality of drive sources that output the drive force.