Patents Assigned to YANMAR POWER TECHNOLOGY CO., LTD.
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Patent number: 11649784Abstract: 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: GrantFiled: May 10, 2022Date of Patent: May 16, 2023Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Tomoaki Kitagawa, Masahiro Akei
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Publication number: 20230144543Abstract: The present disclosure includes a radar configured to detect surrounding objects and terrain, and a LIDAR configured to detect the surrounding objects and terrain using a narrower detection range and a higher resolution than the radar. The disclosure also includes a first map, such as a wide-area map, generated based on information about the surrounding as detected by the radar, a second map, such as a high-resolution map, based on information about the surroundings as detected by the LIDAR, and a composite map that has the grid width of the first map and the grid width of the second map.Type: ApplicationFiled: March 4, 2021Publication date: May 11, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Yuichiro DAKE, Isao WAKABAYASHI, Naohiro HARA, Tomoya FUKUKAWA, Toshiyuki YOKOUE, Satoshi MINAMIYAMA
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Patent number: 11643960Abstract: An exhaust gas purification device including: a first case communicating with an exhaust manifold of an engine and internally including a first exhaust gas purification body for removing a carbon compound; and a second case communicating with an exhaust outlet of the first case and internally including second exhaust gas purification bodies for removing a nitrogen compound. The first case and the second case are arranged above the engine and in an L-shape to respectively extend along two side surfaces of the engine, the two side surfaces being adjacent to each other.Type: GrantFiled: July 14, 2021Date of Patent: May 9, 2023Assignee: Yanmar Power Technology Co., Ltd.Inventors: Yoshiyuki Sandou, Hiroaki Naganawa, Kazuma Sugimoto
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Publication number: 20230135687Abstract: A heat pump is provided with a compressor; an oil separator provided on a discharge path of the compressor; an accumulator connected to the compressor via a suction path; and a bypass circuit configured to supply a gas refrigerant separated by the oil separator. The bypass circuit is connected to the suction path.Type: ApplicationFiled: March 4, 2021Publication date: May 4, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Norihiro OKUDA, Hideshi OKADA, Sachie TSUJIKAWA, Terunori AIKAWA, Tomoya YOSHIMURA
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Publication number: 20230137037Abstract: A heat pump includes an indoor heat exchanger; an outdoor heat exchanger that is connected to the indoor heat exchanger; an accumulator that is connected to the outdoor heat exchanger; an evaporative heat exchanger that is provided between the outdoor heat exchanger and the accumulator; and a bypass circuit that that is configured to enable a refrigerant that has flowed out of the indoor heat exchanger to flow into the evaporative heat exchanger.Type: ApplicationFiled: March 4, 2021Publication date: May 4, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Norihiro OKUDA, Terunori AIKAWA, Hideshi OKADA
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Publication number: 20230134654Abstract: A flow path switching valve includes a block-shaped body having a first opening and a second opening which communicate with each other via a linear first oil path, and a third opening which communicates with the first oil path via a linear second oil path; a valve body which is provided so as to be rotatable relative to the body, and in which a communication flow path is formed that allows two openings to communicate with each other depending on the rotation position; and a locking protrusion which regulates the rotation range of the valve body in order to select the rotation position of the valve body to be a predetermined rotation position where two openings of a predetermined combination among the three openings communicate with each other via the communication flow path of the valve body.Type: ApplicationFiled: March 8, 2021Publication date: May 4, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventor: Soichiro SHIN
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Patent number: 11635033Abstract: An engine includes an exhaust manifold, an intake manifold, and an EGR device configured to supply EGR gas from the exhaust manifold to the intake manifold. An EGR cooler is provided at a side of the exhaust manifold, and a longitudinal direction of the EGR cooler is in an up-down direction of the engine in a used state.Type: GrantFiled: October 28, 2021Date of Patent: April 25, 2023Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Yu Matsui, Masato Kishiura
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Patent number: 11634183Abstract: A hood of a tractor including a front grill, a light unit, and an upper cover is provided with a center pillar. The front grill is attached to the center pillar, the light unit is attached to the front grill, and the upper cover is supported by the center pillar. The hood is further provided with a side frame and a lower cover, where the side frame is attached to the center pillar, and the lower cover is attached to at least the upper cover and the side frame.Type: GrantFiled: June 3, 2020Date of Patent: April 25, 2023Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventor: Yoshiaki Kurokawa
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Publication number: 20230117450Abstract: A heat pump includes a first outdoor heat exchanger and a second outdoor heat exchanger which are mutually connected in parallel; a merge part at which refrigerant that has flown out from the first outdoor heat exchanger and the second outdoor heat exchanger is configured to merge; and a third outdoor heat exchanger that is connected to the merge part.Type: ApplicationFiled: March 1, 2021Publication date: April 20, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Norihiro OKUDA, Sachie TSUJIKAWA, Terunori AIKAWA, Shingo OKADA
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Publication number: 20230124315Abstract: A work assistance system is a system used together with a work machine, wherein an estimation unit and an output unit are provided. The work machine has an engine as the power source thereof, and travels in a field. On the basis of at least the magnitude of the load of the engine, the estimation unit estimates whether there is an occurrence of a target event that accompanies fluctuations in the load. The output unit outputs output data corresponding to the estimation results from the estimation unit.Type: ApplicationFiled: February 19, 2021Publication date: April 20, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventor: Kohei Nashiro
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Publication number: 20230111557Abstract: An auto tensioner is supported on one side surface of a cylinder block 4-(the outer surface of a front wall part) via a bracket. The auto tensioner includes: a tension pulley that is pressed against a belt; an arm that rotatably supports the tension pulley and is swingably supported to the bracket; and a hydraulic actuator that is supported by the arm and bracket to adjust the pressing force of the tension pulley to the belt using a predetermined position of the arm as a supporting point. The hydraulic actuator is disposed outside the water pump 8-on the front wall part of the cylinder block.Type: ApplicationFiled: February 17, 2021Publication date: April 13, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventor: Hiroaki NAGANAWA
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Patent number: 11612094Abstract: The present describes a work vehicle where an operator can, on the work vehicle side, confirm which working machine is engaged and set which working machine to engage. A tractor, to which a working machine can be mounted, is provided with: a liquid crystal panel selectably displaying an engageable working machine mounted and displaying the currently engaged working machine so as to be identifiable; an operation unit (encoder dial, enter button, and command buttons) for carrying out selection and determination operations for the working machine displayed on the liquid crystal panel; and a control device that, when a determination operation is carried out by the operation unit for a desired working machine, disengages the currently engaged working machine, and configures the working machine for which the determination operation has been carried out to be engaged.Type: GrantFiled: May 20, 2020Date of Patent: March 28, 2023Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventor: Toshiyuki Miwa
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Publication number: 20230090880Abstract: An engine device includes an exhaust gas purification device above a cylinder head through a support pedestal. The support pedestal has a flat portion on which the exhaust gas purification device is mounted, and a plurality of legs which protrude downward form the flat portion and are fixed to the cylinder head. The flat portion and the leg portion are formed integrally. Portions between the legs are each formed in an arch-shape.Type: ApplicationFiled: November 26, 2022Publication date: March 23, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Yu Matsui, Naotoshi Furukawa
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Publication number: 20230081284Abstract: An area registration method including setting information about a work vehicle that autonomously travels in a travel area; setting a work area which is included in the travel area and in which the work vehicle performs work; setting a headland area that is included in the travel area and is located on the outer side of the work area; and, when an operation for inputting the set information of the headland area is received after the work area and the headland area have been set, changing the sizes of the work area and the headland area on the basis of the inputted set information.Type: ApplicationFiled: February 3, 2021Publication date: March 16, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Yasuto Nishii, Taiki Shirafuji
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Publication number: 20230083514Abstract: A remote controller including an emergency stop button that receives an emergency stop operation, a temporary stop button that receives a temporary stop operation, and a control unit that restarts the running of a tractor when a running restart operation is performed after the tractor has been temporary stopped, the running restart operation including a pressing operation for pressing the temporary stop button continuously for a first predetermined time and a release operation for releasing the pressing operation on the temporary stop button within a second predetermined time following the first predetermined time.Type: ApplicationFiled: January 28, 2021Publication date: March 16, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Shinya Nishibeppu, Takuya Iwase
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Publication number: 20230084302Abstract: This construction machine comprises: includes a work machine; an automatic controller for automatically controlling the work machine according to design information; an operation lever for manually controlling the work machine; and an automatic switch mounted on the operation lever and alternatively switching between activation and deactivation of the automatic control. The manual control of the work machine has higher priority than the automatic control.Type: ApplicationFiled: February 8, 2021Publication date: March 16, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventor: Kohei Okazaki
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Patent number: 11603904Abstract: An engine device having a flywheel housing in which a flywheel that is rotated integrally with a crankshaft is accommodated on one side portion of a cylinder block, in which the cylinder block is integrally formed with housing bracket portions each protruding in a direction away from the crankshaft from each of opposite side portions of the cylinder block extending along a crankshaft axial direction, the housing bracket portions protruding from end portions of the opposite side portions close to the one side portion, and a space surrounded by the one side portion, the housing bracket portions, and the flywheel housing constitutes a gear case for accommodating therein a gear train.Type: GrantFiled: December 9, 2020Date of Patent: March 14, 2023Assignee: Yanmar Power Technology Co., Ltd.Inventor: Koki Kashiwa
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Publication number: 20230072707Abstract: An engine including a main fuel injection valve, a pilot fuel injection valve, a liquid fuel supply rail pipe, and a pilot fuel supply rail pipe. The main fuel injection valve supplies liquid fuel from the liquid fuel supply rail pipe to a combustion chamber during combustion in a diffusion combustion system. The pilot fuel injection valve supplies pilot fuel from the pilot fuel supply rail pipe to the combustion chamber in order to ignite gaseous fuel during combustion in a premixed combustion system. The liquid fuel supply rail pipe is disposed at one side of an imaginary vertical plane including an axis of a crank shaft. The pilot fuel supply rail pipe is disposed at the side of the imaginary vertical plane at which the liquid fuel supply rail pipe is disposed.Type: ApplicationFiled: November 11, 2022Publication date: March 9, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Katsuhiro Nishimura, Koichi Hirose
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Patent number: 11598234Abstract: This breather device separates engine oil included in a blow-by gas. The breather device comprises a first route, an acceleration route, a branching route, and turn-back routes. The blow-by gas flows to the first route. The acceleration route is connected to a downstream side of the first route, and has a flow channel cross-sectional area smaller than that of the first route. The branching route is connected to a downstream side of the acceleration route, configured including a wall part orthogonal to the acceleration route, and branched into two routes by the wall part. The turn-back routes are connected to one route branching at the branching route, and are turned back so as to be parallel to the acceleration route and to head in the opposite direction from a progressing direction.Type: GrantFiled: May 8, 2019Date of Patent: March 7, 2023Assignee: Yanmar Power Technology Co., Ltd.Inventors: Kota Takamatsu, Masato Sugimoto
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Patent number: 11591775Abstract: Provided is a hydraulic circuit, for a construction machine, which drives an actuator by merging pressure oil from a fixed-volume pump into a center bypass oil path from a variable-volume pump to an oil tank, wherein the flow rate of flow from the fixed-volume pump to the center bypass oil path can be controlled in accordance with a requested flow rate of the actuator.Type: GrantFiled: March 6, 2020Date of Patent: February 28, 2023Assignees: Yanmar Power Technology Co., Ltd., Nabtesco CorporationInventors: Junya Ono, Hiroshi Matsuyama, Naoto Kageyama, Hitoshi Iwasaki, Nanami Tukahara