Abstract: An engine includes: an engine block including a cylinder block and a head block, a cool liquid cooler that cools a first cool liquid that cools the engine block, a lubricant oil cooler that cools a lubricant oil using the first cool liquid or a second cool liquid, an exhaust manifold mounted to the engine block, a turbocharger driven by exhaust gas from the exhaust manifold, an exhaust communication pipe that communicates the exhaust manifold with the turbocharger, and a cool liquid flow channel through which a cool liquid discharged from the engine block flows in an order of the exhaust communication pipe and the exhaust manifold. The cool liquid cooler and the lubricant oil cooler are so placed as to be arranged side by side on one end side in a crankshaft direction.

Abstract: A control device is configured to estimate a soot deposition amount (PM deposition amount) in a DPF for an exhaust purification device that is configured to purify exhaust of a diesel engine using the DPF, and determine a regeneration timing for the diesel engine based on the estimated PM deposition amount. As a technique of determining the regeneration timing, the control device employs a first determination technique of detecting that the PM deposition amount is a first threshold or more and a state in which the PM deposition amount is the first threshold or more has continued for a first predetermined time and a second determination technique of detecting that the PM deposition amount is a second threshold (>the first threshold) or more and a state in which the PM deposition amount is the second threshold or more has continued for a second predetermined time.

Abstract: A work vehicle includes a monitoring device which monitors the surroundings of the work vehicle; an alarm device which outputs an alarm on the basis of a monitoring result of the monitoring device; a posture detection unit which detects whether an operator sits on an operation seat of the work vehicle and is in an operation posture for operating the work vehicle; and a control unit which controls the alarm device on the basis of the result of detection by the posture detection unit. Based on detection by the posture detection unit that the operator is in the operation posture, the control unit causes the alarm device to output an alarm based on the monitoring result of the monitoring device, and based on detection by the posture detection unit that the operation posture of the operator is released, the control unit causes the alarm device to stop outputting the alarm based on the monitoring result of the monitoring device.

Abstract: An engine includes: two cylinder rows so placed as to be aligned side by side; a turbocharger; and an intercooler shared by the two cylinder rows, and connected to the turbocharger. The intercooler has: a cool liquid flow path through which a cool liquid flows, and an intake air flow path through which intake air from the turbocharger flows. The cool liquid flow path has an inlet and outlet of the cool liquid on one side in a first direction along the flow of the cool liquid. The intake air flow path has an inlet of the intake air on one side in a second direction along the flow of the intake air, and an outlet of the intake air on another side.

Abstract: An engine includes: a cylinder block that has a cylinder included in a combustion chamber; a crankshaft that is placed in the cylinder block; a flywheel that is mounted to one end portion of the crankshaft; and a flywheel housing that is placed on a side of one end face of the cylinder block in a direction of the crankshaft and that houses the flywheel. The flywheel housing has a blow-by gas path through which a blow-by gas passes.

Abstract: An engine is an engine provided with a first cylinder row and a second cylinder row. The engine includes: a controller that is placed in an intra-bank area positioned between the first cylinder row and the second cylinder row; and a fuel pipe that is placed below the controller in the intra-bank area and included in a passage of a fuel. Ina plan view from an up and down direction, a joint portion possessed by the fuel pipe is displaced from the controller.

Abstract: [Problem] To provide, in an engine provided with two cylinder rows, a technology that, while suppressing a cost increase, can suppress a difference in combustion performance between the cylinder rows. [Solution] An exemplary engine includes: a first cylinder row having plural cylinders arranged in a front and rear direction; a second cylinder row arranged parallel to the first cylinder row; plural first injectors provided for the respective cylinders of the first cylinder row, plural second injectors provided for respective cylinders of the second cylinder row; and a fuel pump having a first discharge port to discharge a fuel to the plural first injectors and a second discharge port to discharge a fuel to the plural second injectors. The fuel pump is placed between the first cylinder row and the second cylinder row in a plan view from an up and down direction.

Abstract: An engine includes an engine stop switch for stopping the engine, and a cooling part included in a holding portion or passage of a cooling liquid. The engine stop switch is placed at the cooling part or at a peripheral part of the cooling part.

Abstract: A work machine control system includes: an acquisition processing unit; a determination processing unit; and an alarm processing unit. The acquisition processing unit acquires a detection result of an object around a machine body of a work machine. The determination processing unit determines whether the work machine is operable or inoperable. The alarm processing unit outputs an alarm. The alarm processing unit prohibits the alarm's outputting when it is determined, after the first situation, that the work machine is operable. Further, the alarm processing unit outputs the alarm under the first situation, and continues the alarm's outputting when it is determined, after the first situation, that the work machine is operable. The first situation is defined as a situation in which the work machine is determined to be inoperable, and in which the detection result meets a given condition.

Abstract: A work machine control system includes: an acquisition processing unit; and a state switch processing unit. The acquisition processing unit acquires a detection result of an object around a machine body of a work machine provided with an actuator actuated in response to an operation of an operation unit. The state switch processing unit, apart from a gate lock lever, is so configured as to be capable of switching between an enabled state and disabled state of the operation unit. The gate lock lever is so configured as to be capable of switching between an unlocked state capable of operating the work machine and a locked state incapable of operating the work machine.

Abstract: A first positioning processing unit executes independent positioning for calculating the position of a work vehicle on the basis of a satellite signal received from a satellite. A transmission processing unit transmits point positioning information to a base station server that selects one base station. An acquisition processing unit acquires correction information associated with the one base station from the base station server. A second positioning processing unit executes RTK positioning for calculating the current position of the work vehicle on the basis of the correction information. When the RTK positioning for the work vehicle based on first correction information associated with a first base station becomes possible, the transmission processing unit transmits, to the base station server, the point positioning information immediately before the RTK positioning becomes possible.

Abstract: A traveling processing unit causes a work vehicle to automatically travel along a target route set within a field. A detection processing unit detects an obstacle located on an outer periphery of the field, while the work vehicle is traveling along the target route in a headland area of the field. In a case where the obstacle is a ridge, the traveling processing unit causes the work vehicle to travel along an avoidance route inside the field than the target route.

Abstract: A work machine includes a battery pack, a first vent provided at a rear end of a machine body, a fan located between the first vent and the battery pack, a second vent located in front of and above the battery pack, and an electric motor rotated by electric power from the battery pack.

Abstract: An engine including an exhaust bypass valve and an intake bypass valve. The exhaust bypass valve is disposed in an exhaust bypass channel connecting an outlet of an exhaust manifold and an exhaust outlet of a turbocharger to each other. The intake bypass valve is disposed in an intake bypass channel connecting an inlet of an intake manifold and an inlet of the turbocharger. An intake pressure sensor detects a pressure of the intake manifold. If an instruction value indicating an upper limit or a lower limit of the valve opening degree of the intake bypass valve is continuously output for a predetermined time or more, an engine control device determines that an abnormality occurs in at least one of the exhaust bypass valve and the intake bypass valve.

Abstract: An EGR cooler 5 is attached to an engine 1 via a bracket 6. The bracket 6 has an exhaust introduction path 65 for introducing some exhaust discharged from a cylinder head 11 to the EGR cooler 5, an exhaust recirculation path 66 for recirculating exhaust that has passed through the EGR cooler 5 toward the engine 1, a cooling water introduction path 67 for introducing cooling water from cooling water supply parts (3, 13-15) to the EGR cooler 5, and a cooling water recirculation path 68 for recirculating cooling water that has passed through the EGR cooler 5 to the cooling water supply parts.

Abstract: This construction machine includes a lower traveling body; an upper swiveling body; and a rotary coupling member that swivels, together with the upper swiveling body, with respect to the lower traveling body. The rotary coupling member has a swivel joint; a rotary joint that includes a slip ring; a cable; a coupling part; and a detent part that is fixed to the body of the swivel joint and that restricts the rotation of a terminal part of the slip ring.

Abstract: An engine includes a sacrificial protective pipe subjected to a sacrificial protective coating process, and a metal pipe connected to at least one of two ends of the sacrificial protective pipe. The engine includes a flow path component (an intercooler side cover, a fresh-water cooler side cover) connected to one of two ends of the metal pipe, the one not being connected to the sacrificial protective pipe, and a sacrificial protective material provided to the flow path component.

Abstract: The engine includes a cylinder head provided over a cylinder row, an intercooler provided on one end side of the cylinder head in a row direction of the cylinder row, an air supply manifold to introduce air from the intercooler to the cylinder head, and a cooling piping connected to the intercooler, where the cylinder head, air supply manifold, and cooling piping are arranged in a width direction intersecting the row direction of the cylinder row in stated order of the cylinder head, air supply manifold, and cooling piping, and in a cross section of the air supply manifold taken along a line intersecting the row direction, a length along the width direction is shorter than a length along a direction intersecting both the row direction and the width direction.

Abstract: A travel route determination system including: a route generating unit generating planned travel routes including work routes along which a work vehicle performs autonomous travel; a control unit capable of causing the work vehicle to perform autonomous travel along the planned travel routes; an information obtaining unit obtaining position information and orientation information on the work vehicle; and a determination unit determining an autonomous travel candidate route at which the work vehicle can start autonomous travel, before the work vehicle starts autonomous travel. The determination unit sets a candidate determination region based on the position information and orientation information on the work vehicle, and the determination unit determines, among the work routes, a work route in the candidate determination region as the autonomous travel candidate route.

Abstract: A work vehicle, such as a combine harvester, includes a portable terminal, and the portable terminal comprises a control device. The control device functions as an outline setting section for setting a field outline, a creation-capable area setting section for setting a creation-capable area that is provided inside the field outline and in which an automatic traveling route can be created, and a range changing section for changing a range of the creation-capable area.