Patents Assigned to YANMAR POWER TECHNOLOGY CO., LTD.
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
Patent number: 11583127Abstract: A rice gel production system for producing rice gel in a form of a gel including: a cooking unit that cooks or steams raw-material rice to obtain cooked rice; a cooked rice conveyance unit that conveys the cooked rice; and a pulverizing unit that receives the cooked rice from the cooked rice conveyance unit and pulverizes the cooked rice to obtain rice gel. The pulverizing unit includes: a first pulverizing unit that pulverizes the cooked rice to obtain first pulverized rice; and a second pulverizing unit that pulverizes the first pulverized rice discharged from the first pulverizing unit, the pulverization by the second pulverizing unit being performed more finely as compared with the pulverization performed by the first pulverizing unit 100A to obtain the rice gel.Type: GrantFiled: October 10, 2017Date of Patent: February 21, 2023Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventor: Kuniyasu Tsuchiya
-
Patent number: 11572677Abstract: A work vehicle allows an operator to easily check the vertical position and the angle of bucket. The work vehicle includes a front loader with a bucket, and freely raises/lowers and rotates the bucket. The work vehicle comprises a display disposed near an operator seat. The display is configured to display vertical position information and angle information of the bucket.Type: GrantFiled: February 5, 2020Date of Patent: February 7, 2023Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventor: Takumi Hasegawa
-
Publication number: 20230033387Abstract: 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: ApplicationFiled: October 6, 2022Publication date: February 2, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Taishi Murakami, Masayoshi Doui
-
Publication number: 20230031053Abstract: Provided is an automatic travel system for a work vehicle, wherein: a control unit that causes the work vehicle to automatically travel according to a target path includes a target position setting unit that sets a target travel position to a predetermined position separated by a predetermined distance in an advancing direction from a current position of the work vehicle, and an automatic steering controller that controls operations of a steering unit so that that work vehicle follows the target travel position; and the target position setting unit determines whether the target travel position has reached an end position of a turning path connected to a straight path and, if a determination is made that the target travel position has reached the end position of the turning path, then changes the setting of the target travel position from the position on the turning path to a position on the straight path.Type: ApplicationFiled: October 15, 2020Publication date: February 2, 2023Applicant: Yanmar Power Technology Co., Ltd.Inventors: Maroi Kodama, Yasuto Nishii
-
Patent number: 11566797Abstract: A subcooler is made up of a plate type heat exchanger. The accumulator is located between a compressor and the subcooler in a width direction of an outdoor unit in a planar view. The subcooler overlaps with the accumulator in the width direction in the planar view. As a result, a compact heat pump can be provided when the subcooler is a plate type heat exchanger.Type: GrantFiled: February 25, 2020Date of Patent: January 31, 2023Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Norihiro Okuda, Terunori Aikawa, Hirotoshi Kihara