Patents Assigned to Yanmar Holdings Co., Ltd.
  • Patent number: 12228066
    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.
    Type: Grant
    Filed: March 9, 2023
    Date of Patent: February 18, 2025
    Assignee: YANMAR HOLDINGS CO., LTD.
    Inventors: Yu Hirao, Shinya Matsuo
  • Publication number: 20250052037
    Abstract: A work machine control method includes acquiring operation information on an operation of an operation section of a display device for a work machine, displaying an operation menu in a position corresponding to the operation section on the display screen displayed in a display section of the display device, executing control based on the operation information, and switching a display mode of the operation menu from a normal mode to a specific mode on the display screen when a switching condition is satisfied.
    Type: Application
    Filed: July 14, 2024
    Publication date: February 13, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Ryosuke Suga, Daisuke Kawaguchi, Katashi Tanaka
  • Publication number: 20250043747
    Abstract: A Stirling engine includes: the thermosiphon that accommodates the heating medium receiving heat from a heat source; and an engine unit that has a body accommodating working gas. A heater that gives heat to the working gas by the heating medium is arranged in the body. The Stirling engine includes an engine controller that executes control for increasing an absorbed amount of thermal energy from the heating medium when at least one of the pressure and the temperature of the heating medium exceeds a predetermined value.
    Type: Application
    Filed: July 31, 2024
    Publication date: February 6, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Kazuyuki KODA, Masato KITAZAKI, Jiro FUKUDOME, Osamu SAKAMOTO, Nobu KOBAYASHI
  • Publication number: 20250043537
    Abstract: An exemplary work machine is a work machine including a turning body in front of which a work device is disposed, and the work machine includes: a turning frame constituting a bottom portion of the turning body; a first vertical plate and a second vertical plate extending from front to rear on the turning frame and disposed at intervals on left and right sides; a swing body horizontally rotatably supported by the turning frame in front of the first vertical plate and the second vertical plate and supporting the work device; a hydraulic cylinder disposed on an outer side of a machine body on a side opposite to the second vertical plate side with respect to the first vertical plate on the turning frame and having one end portion coupled to the swing body; and an auxiliary vertical plate that is disposed between the first vertical plate and the hydraulic cylinder and coupled to another end portion of the hydraulic cylinder.
    Type: Application
    Filed: July 14, 2024
    Publication date: February 6, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventor: Satoshi Kitahara
  • Publication number: 20250042388
    Abstract: An exemplary ship includes a plurality of hybrid systems that drives a propelling machine, and a control device that controls the plurality of hybrid systems. The control device sets the plurality of hybrid systems to the same operation mode.
    Type: Application
    Filed: July 29, 2024
    Publication date: February 6, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Gakuji TAMURA, Ryosuke OHASHI, Yoshiyuki KOBAYASHI, Tatsuya FUJIMORI, Jumpei SAWADA, Toru HONJO
  • Publication number: 20250043536
    Abstract: An exemplary work machine is a work machine including a turning body in front of which a work device is disposed, the work machine including: a turning frame constituting a bottom portion of the turning body; a battery unit disposed on the turning frame; a first connection portion that inputs electric power to the battery unit or outputs electric power of the battery unit; a second connection portion that is disposed above the battery unit and distributes electric power; and a wiring member that passes below the battery unit and connects the first connection portion to the second connection portion.
    Type: Application
    Filed: July 14, 2024
    Publication date: February 6, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventor: Kotaro Nomura
  • Publication number: 20250035021
    Abstract: Provided are an aftertreatment device capable of purifying exhaust gas with a compact configuration and an engine including the aftertreatment device. An aftertreatment device includes: a first case that is a DPF case; a second case that is an SCR case; an exhaust connection pipe that connects the first case and the second case; a mixer arranged at an upstream end of the exhaust connection pipe in a flow direction of exhaust gas; and a urea water injection portion that injects urea water into the mixer.
    Type: Application
    Filed: October 10, 2024
    Publication date: January 30, 2025
    Applicant: YANMAR HOLDINGS CO., LTD.
    Inventor: Shinsuke KASAZAKI
  • Publication number: 20250035055
    Abstract: In an engine apparatus which is driven by at least one of a gaseous fuel and a liquid fuel being inputted into a combustion chamber, a dangerous region where abnormal combustion is predicted is preset with respect to the mixed combustion ratio of the gaseous fuel contained in fuels which are inputted into the combustion chamber, and the dangerous region is avoided when an engine is operated. For example, in the engine apparatus, when the engine is operated while the mixed combustion ratio is changed, an avoidance control which avoids the dangerous region is executed. For example, in the engine apparatus, the dangerous region is preset in a relation between the engine load and the mixed combustion ratio of the gaseous fuel.
    Type: Application
    Filed: July 10, 2024
    Publication date: January 30, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Takafumi Tentora, Gin Morita, Daichi Matsunaga, Toru Takemoto, Takafumi Kamino
  • Publication number: 20250035060
    Abstract: In an engine device driven by gaseous fuel, abnormal combustion occurring in a combustion chamber of an engine is detected, an occurrence frequency and an occurrence intensity of the abnormal combustion are monitored, and a suppression method for suppressing the abnormal combustion is determined according to the occurrence frequency and the occurrence intensity. At least one of ignition timing of the gaseous fuel, an air excess ratio of intake air in a mixture gas composed of the gaseous fuel and the intake air, and shut-off of the gaseous fuel is controlled as the suppression method in the engine device.
    Type: Application
    Filed: July 10, 2024
    Publication date: January 30, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Daichi Matsunaga, Gin Morita, Tentora Takafumi, Toru Takemoto, Takafumi Kamino, Giovanni Vichi
  • Publication number: 20250034843
    Abstract: A hydraulic excavator as an electric work machine comprises a lower traveling body, an upper swivel body located above the lower traveling body and provided to be swivelable with respect to the lower traveling body, an electric motor arranged in the upper swivel body, a hydraulic pump arranged in the upper swivel body and driven by the electric motor, a battery unit arranged in the upper swivel body and storing electric power to drive the electric motor, and a hydraulic actuator driven by hydraulic oil supplied from the hydraulic pump. The upper swivel body has a swivel frame at a bottom portion thereof. The battery unit is arranged on the swivel frame. The electric motor and the hydraulic pump are arranged on the swivel frame, side by side in a left-right direction of the upper swivel body.
    Type: Application
    Filed: October 15, 2024
    Publication date: January 30, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventor: Satoshi Kitahara
  • Publication number: 20250038226
    Abstract: An exemplary fuel cell system includes a housing including a first section in which a fuel cell module and a hydrogen flow passage are disposed and a second section which is adjacent to the first section and in which an auxiliary machine is disposed. The housing has a connection part between the hydrogen flow passage and an external hydrogen flow passage disposed outside the housing, on a wall different from a partition wall sectioning the first section and the second section among walls constituting the first section.
    Type: Application
    Filed: February 12, 2024
    Publication date: January 30, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Takehiro Maruyama, Shinichiro Matsui, Takuya Hiraiwa, Manabu Shinagawa, Fumiaki Yukizane, Naoki Teraguchi, Takahiro Kubo, Takunori Utani, Yusuke Marutani, Shinya Naeki
  • Publication number: 20250035061
    Abstract: In an engine device driven by gaseous fuel, combustion duration in a combustion chamber in an engine is detected, abnormal combustion occurring in the combustion chamber is estimated based on a correlation between the combustion duration and abnormal combustion (backfiring), and a suppression method for suppressing the abnormal combustion is determined when the abnormal combustion is estimated. The engine device performs control to shorten the combustion duration as the suppression method.
    Type: Application
    Filed: July 10, 2024
    Publication date: January 30, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Toru Takemoto, Gin Morita, Daichi Matsunaga, Takafumi Tentora, Takafumi Kamino
  • Patent number: 12203430
    Abstract: An engine is equipped with an engine body, a turbocharger, an exhaust gas purifier, an exhaust communication pipe. The turbocharger is connected to the engine body. The exhaust gas purifier purifies exhaust gas discharged from the turbocharger. The exhaust communication pipe connects the turbocharger with the exhaust gas purifier. The exhaust communication pipe includes: a first connection member that is connected to the turbocharger, and a second connection member that connects the first connection member with the exhaust gas purifier. A downstream end portion of the first connection member has an inner peripheral face having a cross-section of a circular shape. An upstream end portion of the first connection member has an inner peripheral face having a cross-section of an abnormal-shape that is different from the inner peripheral face of the downstream end portion.
    Type: Grant
    Filed: April 25, 2024
    Date of Patent: January 21, 2025
    Assignee: YANMAR HOLDINGS CO., LTD.
    Inventor: Shinsuke Kasazaki
  • Publication number: 20250020472
    Abstract: An automatic route generation apparatus is provided that enables generation of a seamless route from unberthing to berthing of a watercraft through offshore navigation. In one embodiment, the apparatus includes: an acquisition unit that acquires route generation information including a berthing location, an unberthing location, a first point away from the unberthing location, and a second point away from the berthing location of a watercraft; and a generation unit that generates a route of the watercraft on the basis of the route generation information acquired by the acquisition unit.
    Type: Application
    Filed: July 3, 2024
    Publication date: January 16, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Yuichiro DAKE, Yonosuke MIKI, Suisei WADA, Naohiro HARA, Tomohiro KIMURA, Satoshi MINAMIYAMA
  • Publication number: 20250012054
    Abstract: A control method of work machine includes causing a display screen Dp1 to be displayed on a display portion of a display device for a work machine including a pair of left and right direction indicators, causing a first object Ob1 corresponding to a lighting state of a direction indicator on a right side of the work machine to be displayed on the display screen Dp1, and causing a second object Ob2 corresponding to a lighting state of a direction indicator on a left side of the work machine to be displayed on the display screen Dp1. The first object Ob1 is disposed at a position opposed to a right side edge of a display area of the display portion on the display screen Dp1 with a non-display area therebetween. The second object Ob2 is disposed at a position opposed to a left side edge of a display area of the display portion on the display screen Dp1 with the non-display area therebetween.
    Type: Application
    Filed: June 13, 2024
    Publication date: January 9, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Thorsten Meyer, Ulf Kohlrautz
  • Publication number: 20250013246
    Abstract: An automatic traveling system causes a work vehicle to automatically travel in a work area in a case where the work vehicle satisfies a traveling start condition, and causes the work vehicle to automatically travel in a non-work area in a case where predetermined confirmation operation or confirmation action by a worker is performed.
    Type: Application
    Filed: June 13, 2024
    Publication date: January 9, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Shinya Nishibeppu, Akifumi Kuroda, Masaaki Murayama, Masahito Adachi, Yasuto Nishii
  • Publication number: 20250013245
    Abstract: An acquisition processing unit acquires, when a work vehicle performs autonomous travel according to a target route, distance information relating to a distance to a detection target that is detected by an obstacle sensor, and image information relating to a capture image of the detection target that is captured by a camera. A determination processing unit determines a type of the detection target based on the image information. A countermeasure processing unit causes the work vehicle to execute countermeasure processing according to the type of the detection target and the distance information.
    Type: Application
    Filed: June 13, 2024
    Publication date: January 9, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Shinya Nishibeppu, Seungkyu Lee, Kohei Ishikawa
  • Publication number: 20250015325
    Abstract: A fuel cell system includes a fuel cell module having a fuel cell stack, a fuel gas system that supplies a fuel gas to the fuel cell stack, and a ventilation flow generator. The fuel gas system includes a fuel gas leakage risk portion. The ventilation flow generator generates a ventilation flow directed to the fuel gas leakage risk portion.
    Type: Application
    Filed: February 12, 2024
    Publication date: January 9, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Takehiro Maruyama, Shinichiro Matsui, Takuya Hiraiwa, Manabu Shinagawa, Fumiaki Yukizane, Naoki Teraguchi, Takahiro Kubo, Yusuke Marutani
  • Publication number: 20250012053
    Abstract: A control method of work machine has acquiring operation information related to an operation of an operation portion of a display device for a work machine, causing a display screen Dp1 to be displayed on a display portion of the display device, and causing an operation menu M1 to be displayed at a position corresponding to the operation portion in the display screen Dp1 on the basis of the operation information. The control method of work machine further has changing of the display screen Dp1 on the basis of the operation menu M1 according to an operation of the operation portion in a state where the operation menu M1 is displayed.
    Type: Application
    Filed: June 13, 2024
    Publication date: January 9, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Thorsten Meyer, Ulf Kohlrautz
  • Publication number: 20250003186
    Abstract: A work machine includes a first lever arranged next to one side of an operator's seat to operate a work unit, a second lever arranged on one side of the first lever to operate a soil removing device, a display device arranged in front of the operator's seat, the first lever, and the second lever, and a jog dial for operating the display device. The jog dial is positioned between the first lever and the second lever at a position facing the operator's seat from the back.
    Type: Application
    Filed: June 13, 2024
    Publication date: January 2, 2025
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Kazuki Takeda, Masaru Shimada, Takahiro Miki