Patents Assigned to YANMAR POWER TECHNOLOGY CO., LTD.
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Publication number: 20220365537Abstract: To provide an automatic driving method, a work vehicle, and an automatic driving system, by which it is possible to perform automatic travel with improved operability. A combine is a work vehicle executing an automatic travel, based on a preset travel route, and includes a steering wheel being a turn operation tool that accepts a turn operation to instruct turning of the combine, a control device that functions as an automatic travel control unit that controls the automatic travel of the combine, based on a travel route, and an override button being a turn operation permission unit that permits a turn operation on the steering wheel during execution of the automatic travel. The travel unit does not accept the turn operation under a normal circumstance during execution of the automatic travel but once the override button is operated, accepts the turn operation.Type: ApplicationFiled: May 12, 2022Publication date: November 17, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventors: Yasuto Nishii, Yuji Yamaguchi, Masaaki Murayama
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Publication number: 20220364332Abstract: To make it easier for an operator to notice an object in the surroundings of a construction machine. A safety monitoring system includes a detection device, a display unit, and a control unit. The detection device detects an object in the surroundings of the work vehicle. The display unit displays a captured image of the surroundings of the work vehicle. The control unit controls the detection device and the display unit. If the detection device detects an object, the control unit controls the display unit to display an image with a defined edge obtained by applying an edge-defining process to the image of the surroundings.Type: ApplicationFiled: May 13, 2022Publication date: November 17, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventors: Yoshihisa Ishikawa, Hiroyuki Muraoka, Hiromu Nagata, Kotaro Matsuishi
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Publication number: 20220364532Abstract: 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.Type: ApplicationFiled: February 19, 2021Publication date: November 17, 2022Applicant: YANMAR POWER TECHNOLOGY CO., LTD.Inventor: Ryohei Toda
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Publication number: 20220354096Abstract: This fish counting system comprises: an image acquisition unit configured to acquire a plurality of images obtained by capturing, over time, images of a photographing area in which a fluid including a fish flows; an extraction unit configured to extract a fish in each image; and a counting unit configured to count the number of fish. The photographing area has a first area and a second area. The counting unit is configured to count the fish when the fish in the first area moves to the second area.Type: ApplicationFiled: September 15, 2020Publication date: November 10, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventors: Yuichiro DAKE, Yasuhiro UEDA, Isao WAKABAYASHI, Toshiaki SAKAI, Makoto TANI
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Patent number: 11492960Abstract: 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.Type: GrantFiled: June 30, 2021Date of Patent: November 8, 2022Assignee: Yanmar Power Technology Co., Ltd.Inventors: Taishi Murakami, Masayoshi Doui
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Patent number: 11492955Abstract: An engine includes: a cylinder block in which a cooling water passage is formed; an oil cooler accommodated in an accommodation part provided in the cooling water passage and having a plurality of cores for cooling an engine oil; a first oil pipe and a second oil pipe configured to support an oil inflow port and an oil ejection port of each of the cores; a cooling water inflow port provided in a lower portion of one end portion of the accommodation part relative to a front-and-rear direction; a cooling water outflow port provided in an upper portion of the accommodation part; and a cooling water inflow passage having an inclined portion inclined downward and connecting to the cooling water inflow port.Type: GrantFiled: November 26, 2018Date of Patent: November 8, 2022Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Hiroaki Naganawa, Takayuki Onodera, Kazuma Sugimoto
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Publication number: 20220343291Abstract: According to the present invention, a maintenance management system includes an acquisition unit, and an output unit. The acquisition unit acquires an actual operation time of a target work machine including a plurality of management units. The output unit outputs maintenance information regarding the maintenance time for at least one management unit among the plurality of management units, by using a virtual operation time, for each management unit, derived from the actual operation time.Type: ApplicationFiled: August 26, 2020Publication date: October 27, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventors: Mitsuhiro FURUICHI, Hiroki KAWAI
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Patent number: 11465501Abstract: The purpose of the present invention is to improve visibility of a status display unit while simplifying the installation of the status display unit and preventing damage to the status display unit. The present invention comprises: a work vehicle body capable of traveling automatically; a status detection unit that detects the status of the work vehicle body; and status display units that show a status display according to the status of the work vehicle body detected by the status detection unit. At least one pair of status display units are arranged diagonally across the work vehicle body in plan view.Type: GrantFiled: December 4, 2018Date of Patent: October 11, 2022Assignee: Yanmar Power Technology Co., Ltd.Inventor: Junko Kudo
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Publication number: 20220316370Abstract: An engine includes: an exhaust manifold 7 close to one of left and right side surfaces of an engine; a turbocharger 60 having an exhaust-side inlet connected to the exhaust manifold 7; and a rocker-arm-chamber-integrated intake manifold 8 being disposed on an upper surface of a cylinder head 5 and integrally including a rocker arm chamber 90 and an intake manifold 6. The intake manifold 8 has a wall 101 dividing the rocker arm chamber 90 close to the one of the left and right side surfaces of the engine 1 and the intake manifold 6 close to the other of the left and right side surfaces to isolate the rocker arm chamber 90 and the intake manifold 6 from each other. The rocker arm chamber 90 has, in its upper portion, a positive crankcase ventilation device 69 protruding therefrom and being configured to return blowby gas to an intake system.Type: ApplicationFiled: June 23, 2022Publication date: October 6, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventors: Tomoyuki Kimura, Hisato Inokuchi
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Patent number: 11458833Abstract: A tractor including: an engine mounted on a traveling body; a post-processing device configured to purify exhaust gas of the engine; and a tail pipe long in an up-down direction and configured to emit exhaust gas having passed through the post-processing device to the outside. The post-processing device is arranged in a standing posture in front of an operation unit on the traveling body so that the exhaust gas flows from the bottom to the top. An upwardly protruding outlet pipe is provided on an upper surface side of the post-processing device. The inner diameter of an exhaust gas inlet side of the tail pipe is set larger than the outer diameter of the outlet pipe which is inserted and communicated with the exhaust gas inlet side of the tail pipe.Type: GrantFiled: April 22, 2021Date of Patent: October 4, 2022Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventor: Kazuo Nomura
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Publication number: 20220307453Abstract: An engine operable in a premixed combustion system and a diffusion combustion system. The engine includes a main fuel injection valve, a pilot fuel injection valve, a liquid fuel tank, a main fuel supply path, a pilot fuel supply path, a pilot fuel filter, a pilot fuel high-pressure pump, a pilot fuel tank, and a pilot fuel supply pump. The pilot fuel tank stores pilot fuel sent from the pilot fuel high-pressure pump and not injected by the pilot fuel injection valve. This pilot fuel is sent to an automatic backwash filter and a pilot fuel filter while not passing through the liquid fuel tank.Type: ApplicationFiled: June 15, 2022Publication date: September 29, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventors: Katsuhiro Nishimura, Koichi Hirose
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Publication number: 20220304215Abstract: An automatic travel system for a work vehicle wherein: when, at the time that a work vehicle reaches an entry area for a parallel path, a condition-assessing unit determines that a starting condition for a first automatic travel control has been met, an automatic travel control unit executes the first automatic travel control for causing the work vehicle to travel automatically along the parallel path in a working state; and when the condition-assessing unit determines that the starting condition for the first automatic travel control has not been met, the automatic travel control unit executes an automatic position adjustment travel control for causing the work vehicle to make a position adjustment by a composite operation of forward/backward switching operations and steering operations of the work vehicle so that the starting condition for the first automatic travel control is met.Type: ApplicationFiled: August 6, 2020Publication date: September 29, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventors: Taiki Shirafuji, Takuya Iwase
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Publication number: 20220287217Abstract: This traveling support system includes a guideline setting unit that sets, in a field, a plurality of guidelines respectively extending in parallel with a plurality of outer peripheries that divides the field; a straight guide line setting unit that sets, in the field, a plurality of straight guidance lines extending in parallel with each other with a distance therebetween; a traveling control unit that automatically advances a work vehicle along the straight guidance lines and cancels the automatic advancing according to an operation of a steering wheel by an operator to enable the work vehicle to be manually steered; and an operation display unit that superimposes and displays the plurality of guidelines, the plurality of straight guidance lines, and the current position of the work vehicle together with the shape of the field.Type: ApplicationFiled: August 18, 2020Publication date: September 15, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventor: Akira Ishikawa
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Patent number: 11441794Abstract: A gas-side stop valve on the gas refrigerant side and a liquid-side stop valve on the liquid refrigerant side are provided in a package of an outdoor unit. A gas-side filter on the gas refrigerant side is mounted on the indoor unit side relative to the gas-side stop valve and inside the package of the outdoor unit. A liquid-side filter 9 on the liquid refrigerant side is mounted on the indoor unit side relative to the liquid-side stop valve and inside the package of the outdoor unit. As a result, it is not necessary to ensure a place for mounting the gas-side filter and the liquid-side filter at the time of installation on site and the workability can be improved.Type: GrantFiled: March 5, 2020Date of Patent: September 13, 2022Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Norihiro Okuda, Hirohiko Nobuhara
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Patent number: 11442468Abstract: A parallel travel work system for an autonomous travel work vehicle, an accompanying travel work vehicle accompanying the autonomous travel work vehicle, and a remote controller for communicating with the autonomous travel work vehicle. The remote controller creates a first preset travel path for the autonomous travel work vehicle and a second preset travel path for the accompanying travel work vehicle travels. The autonomous travel work vehicle is equipped with: a position calculator for calculating a position of the autonomous travel work vehicle using a satellite positioning system, a steering actuator for operating a steering device of the autonomous travel work vehicle, a transceiver for communicating with the remote controller, and a control device for controlling the position calculator, the steering actuator and the transceiver. With the control device, the autonomous travelling of the autonomous travel work vehicle is carried out along the first preset travel path.Type: GrantFiled: July 14, 2020Date of Patent: September 13, 2022Assignee: Yanmar Power Technology Co., Ltd.Inventors: Kouhei Ogura, Akifumi Kuroda, Keiji Matsumoto, Hideaki Aoki
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Publication number: 20220277255Abstract: A server configured to, upon receiving from a user terminal a work relief request demand with respect to a predetermined work plan, select from among work reliever candidates a work reliever candidate who possesses a farm machine required for carrying out the predetermined work plan, and to notify the selected work reliever candidate that the relief request has been made. A work reliever candidate terminal configured to, upon being notified by the server that the relief request has been made, display the predetermined work plan and be able to provide the server with the intention of the work reliever candidate using the work reliever candidate terminal.Type: ApplicationFiled: August 6, 2020Publication date: September 1, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventors: Yusuke NISHIDA, Keiji NAKAMURA
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Patent number: 11428177Abstract: An engine device including an intake manifold configured to supply air into a cylinder; an exhaust manifold configured to output exhaust gas from the cylinder; a gas injector which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve configured to inject a liquid fuel into the cylinder for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.Type: GrantFiled: July 30, 2021Date of Patent: August 30, 2022Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Ryoichi Hagiwara, Kazuteru Toshinaga, Masayoshi Doi, Taishi Murakami, Tatsuro Ohsara, Osamu Yamagishi
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Publication number: 20220268235Abstract: A cylinder head includes: an exhaust port configured to lead out exhaust gas from combustion chamber; an intake port configured to introduce fresh air into the combustion chamber; and an EGR gas passage in which EGR gas flows, wherein exhaust outlets of the exhaust port and an EGR gas inlet of the second EGR pipe are located on a first side of the cylinder head and, and a fresh air inlet communicated to the intake port and an EGR gas outlet of the EGR gas passage are located on a second side which is opposite from the first side.Type: ApplicationFiled: May 10, 2022Publication date: August 25, 2022Applicant: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Tomoaki Kitagawa, Masahiro Akei
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Publication number: 20220269278Abstract: The present invention enables generating a desired target travel path intended by a user or the like without the need for various input works for the type, width, and the like of a work machine.Type: ApplicationFiled: January 17, 2020Publication date: August 25, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventors: Yasuto NISHII, Kohei OGURA, Nobuhiro KIMURA
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Publication number: 20220269263Abstract: A wireless communication terminal device for operating a work vehicle that autonomously travels includes: a device main body 70 having a display 74 that is capable of accepting a touch panel operation; and an emergency-stop remote controller 71 having an emergency stop button 72 that is used to stop autonomous travel of the work vehicle. The device main body 70 and the emergency-stop remote controller 71 perform wireless communication with the work vehicle via different wireless communication networks having different communication schemes, respectively.Type: ApplicationFiled: May 9, 2022Publication date: August 25, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventor: Kazuhisa Yokoyama