Patents Assigned to Yanmar Holdings Co., Ltd.
  • WORK SUPPORT METHOD, WORK SUPPORT SYSTEM, AND PROGRAM
    Publication number: 20230397519
    Abstract: A work support method that supports work that uses a work vehicle includes: switching a run mode to an automatic run mode in which the work vehicle is caused to automatically run in a farm field; switching, when a given condition is met in the automatic run mode, the run mode to a manual run mode in which the work vehicle is caused to manually run; and performing a switch notification to notify that the run mode is switched from the automatic run mode to the manual run mode. A mode of the switch notification differs depending on the work vehicle's state at the time of the switching to the manual run mode.
    Type: Application
    Filed: June 7, 2023
    Publication date: December 14, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Yasuto NISHII, Masaaki MURAYAMA, Yuji YAMAGUCHI
  • Engine system and gas fuel combustion method
    Patent number: 11840978
    Abstract: The present disclosure describes an engine system that can achieve at least one of the followings: suppressing of generating of nitrogen oxides and suppressing of remaining of uncombusted hydrocarbons. The engine system has a combustion chamber to which air and a gas fuel are supplied, and is configured to combust the gas fuel. The engine system includes a liquid fuel injecting unit, and a control unit. The liquid fuel injecting unit is configured to inject a liquid fuel thereby to ignite the gas fuel. The control unit is configured to control the liquid fuel injecting unit. The control unit is configured to control the liquid fuel injecting unit so that injection of the liquid fuel is performed after a flame propagation after ignition of the gas fuel is ended.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: December 12, 2023
    Assignee: YANMAR HOLDINGS CO., LTD.
    Inventors: Yusuke Honda, Kazuteru Toshinaga
  • Work Machine Control Method, Work Machine Control Program, Work Machine Control System, And Work Machine
    Publication number: 20230392352
    Abstract: The work machine control method includes acquiring captured images of a monitoring area around a work machine, and displaying a display screen including the captured images and a detection object on a display device. The work machine control method further includes displaying the detection object at an identical position on the display screen regardless of a detection result of a detector that detects a detection target in the monitoring area, while changing a display mode of the detection object according to the detection result.
    Type: Application
    Filed: May 8, 2023
    Publication date: December 7, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Masashi Danguchi, Katashi Tanaka, Kazuki Tamura
  • Automatic Traveling Method, Working Vehicle, And Automatic Traveling System
    Publication number: 20230380322
    Abstract: A combine is a working vehicle that performs automatic traveling on a work route preset in an agricultural field, and includes a control device. The control device functions as a return traveling control part to make the combine automatically perform return traveling toward the work route in response to a return operation for the combine within the agricultural field during breakaway of the combine 1 from the work route.
    Type: Application
    Filed: May 4, 2023
    Publication date: November 30, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Hidetaka Suzuki, Masaaki Murayama, Yuji Yamaguchi, Yasuto Nishii
  • DIESEL ENGINE
    Publication number: 20230374929
    Abstract: A diesel engine is provided with an exhaust after-treatment device for purifying exhaust gas. The exhaust after-treatment device comprises a DPF that collects a particulate matter included in the exhaust gas, and an SCR that reduces nitrogen oxides included in the exhaust gas through addition of urea. The DPF is arranged to extend in an engine front-rear direction, which is a direction parallel to a crankshaft (CS), while the SCR is arranged to extend in an engine width direction rearward of the DPF in the engine front-rear direction.
    Type: Application
    Filed: October 27, 2021
    Publication date: November 23, 2023
    Applicant: YANMAR HOLDINGS CO., LTD.
    Inventor: Yoshihiro Nuta
  • Autonomous Travel System, Autonomous Travel Method, And Autonomous Travel Program
    Publication number: 20230376039
    Abstract: A farm field setting processing unit sets an inner peripheral work region and an outer peripheral work region in a farm field having a shape where a right side and a left side that face each other are not parallel to each other. A work-direction setting processing unit sets a work direction for a work vehicle within the inner peripheral work region. A path setting processing unit sets, within the inner peripheral work region, a travel path as a work initiating path at a location adjacent to the right side that is parallel to said work direction, from among a plurality of sides that define the inner peripheral work region. On the basis of the work direction and the travel path, a path generation processing unit generates a travel path for the work vehicle within the inner peripheral work region.
    Type: Application
    Filed: September 13, 2021
    Publication date: November 23, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Yasuto Nishii, Mamoru Takahashi
  • WORK VEHICLE
    Publication number: 20230371423
    Abstract: A tractor includes rear wheels, a transmission, brake pedals (a left brake pedal and a right brake pedal), a brake device, a cruise control operating tool, and a cruise control device. The pair of rear wheels is provided on right and left. The transmission shifts the gear for the vehicle speed. The pair of brake pedals is provided on right and left. The brake device individually actuates brakes for the rear wheels on right and left when the brake pedal is operated. The cruise control device fixes the gear of the transmission when the cruise control operating tool is operated, cancels the fixed gear of the transmission when the left brake pedal is operated, and cancels the fixed gear of the transmission when the right brake pedal is operated.
    Type: Application
    Filed: May 15, 2023
    Publication date: November 23, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventor: Tetsuya IIDA
  • Construction Machine
    Publication number: 20230374756
    Abstract: This hydraulic excavator serves as a construction machine and is equipped with: a monitoring unit for monitoring the periphery around the construction machine; and a control unit for controlling the execution of a construction machine operation restriction based on the monitoring results of the monitoring unit according to the operating mode of the construction machine. The control unit executes the operation restriction based on the monitoring results when the operation mode is a normal mode which is not a specific mode, and stops execution of the operation restriction based on the monitoring results when the operation mode is the specific mode.
    Type: Application
    Filed: August 31, 2021
    Publication date: November 23, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Masashi Danguchi, Shogo Suzuki
  • CONSTRUCTION MACHINE ATTACHMENT MOUNTING AND DEMOUNTING APPARATUS AND CONSTRUCTION MACHINE EQUIPPED WITH SAME
    Publication number: 20230366170
    Abstract: An attachment mounting and demounting apparatus includes: a fixed frame that has a first hook; a movable frame that has a second hook and is rotatably provided to the fixed frame; a first hydraulic cylinder that rotates the movable frame relative to the fixed frame; a back locking member provided to the fixed frame; a second hydraulic cylinder provided to the fixed frame to rotate the back locking member biased to a locked position by a lock spring, to an unlocked position; a front locking member provided to the movable frame and biased to a locked position by a lock spring; and a third hydraulic cylinder provided to the movable frame to rotate the front locking member to an unlocked position.
    Type: Application
    Filed: April 20, 2023
    Publication date: November 16, 2023
    Applicant: YANMAR HOLDINGS CO., LTD.
    Inventors: Kiyoshi YONEKURA, Masami MIYANISHI, Yuta MAKINO
  • WORK VEHICLE
    Publication number: 20230364991
    Abstract: A tractor includes an engine, a vehicle body, a rear PTO shaft, a central PTO shaft, a permission switch, and a control unit. The engine is configured to generate power. The vehicle body includes an operator's seat. The rear PTO shaft is configured to supply power generated by the engine to a rear work machine attached to a rear part of the vehicle body. The central PTO shaft is configured to supply power generated by the engine to a central work machine attached to a central part of the vehicle body. The permission switch is operable by an operator. The control unit indicates that the permission switch is operated as one of permission conditions for rotation of the rear PTO shaft after disembarkation, and indicates that the permission switch is operated as one of permission conditions for rotation of the central PTO shaft when moving backward.
    Type: Application
    Filed: May 5, 2023
    Publication date: November 16, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Hiroyasu ISHIDA, Tetsuya IIDA
  • Work Vehicle
    Publication number: 20230365072
    Abstract: An example work vehicle includes: a driver's seat; a canopy that is disposed above the driver's seat; a support portion that supports the canopy; and a positioning antenna that receives a signal from a positioning satellite. The positioning antenna is disposed below the canopy and above the support portion.
    Type: Application
    Filed: May 3, 2023
    Publication date: November 16, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Yohei Nakagawa, Soshi Nomoto
  • OPERATING DEVICE, WORK VEHICLE, AND OPERATION CONTROL METHOD
    Publication number: 20230358018
    Abstract: This operating device includes a dial, a display unit, and an allocation unit. The dial receives a rotational operation. The allocation unit selectively allocates to the dial either an engine operational function to adjust the rotation speed of an engine or a screen operational function to perform an operation according to a screen shown on the display unit. It is preferable that the allocation unit allocates the engine operational function to the dial in response to turning on of a key switch for starting up the engine.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 9, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Daisuke KAWAGUCHI, Shogo SUZUKI, Kazuki TAMURA
  • Work Area Management Method, Work Area Management System, And Work Area Management Program
    Publication number: 20230359200
    Abstract: A work area management method includes storing first area information that represents a first work area that determines a first work route along which a first work device moves to perform a first work in a field, and that is determined on the basis of a positioning position of the first work device. The work area management method also includes outputting the first area information as information that represents an area for determining a second work route along which a second work device different from the first work device moves to perform a second work in the field. The outputting the first area information may include outputting warning information representing that the first area information is unsuitable for determining the second work route when the first area information does not satisfy a predetermined condition.
    Type: Application
    Filed: May 2, 2023
    Publication date: November 9, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Yusuke Nishida, Yasuto Nishii
  • DISPLAY DEVICE AND WORK VEHICLE PROVIDED WITH DISPLAY DEVICE
    Publication number: 20230350556
    Abstract: A display device includes a display unit and a control unit. The display unit can display direct information that indicates object information directly and indirect information that indicates the object information indirectly. The control unit controls the display unit to display the direct information and the indirect information. The object information is preferably a changing value.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 2, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Daisuke KAWAGUCHI, Shogo SUZUKI, Kazuki TAMURA
  • WORK VEHICLE
    Publication number: 20230347995
    Abstract: A work vehicle includes a parking brake lever, right and left braking arms, and an intermediate link mechanism configured to couple the parking brake lever and each of the braking arms. The intermediate link mechanism includes a support shaft configured to rotate, left and right coupling units that are coupled to the support shaft and configured to rotate each of the braking arms in response to a rotational movement of the support shaft, and a cable mechanism having a control cable. The cable mechanism is configured to rotate the support shaft via the control cable in response to a rotational movement of the parking brake lever.
    Type: Application
    Filed: April 26, 2023
    Publication date: November 2, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventor: Masafumi YAMAGUCHI
  • DISPLAY DEVICE AND WORK VEHICLE
    Publication number: 20230347739
    Abstract: A work vehicle capable of an autonomous travel includes a seat for a driver, a steering manipulator located in front of the seat and a display device configured to display information about the autonomous travel. The display device is located on one side in a left-right direction of the steering manipulator and includes a display that has a display screen configured to display information about the autonomous travel of the work vehicle and a manipulator connected to the display and having a manipulation member to enable operation associated with the autonomous travel.
    Type: Application
    Filed: April 25, 2023
    Publication date: November 2, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Soshi NOMOTO, Hiroyuki Nasu
  • Electric Work Machine
    Publication number: 20230339334
    Abstract: A hydraulic excavator as an electric work machine includes an electric motor, a plurality of battery units that store electric power to drive the electric motor, and a machine-body frame on which the electric motor and the plurality of battery units are mounted. The plurality of battery units are located in parallel in one direction and aligned in a direction perpendicular to the one direction in the machine-body frame. At least two of the plurality of battery units have end parts located by being shifted from each other in one direction, respectively.
    Type: Application
    Filed: April 11, 2023
    Publication date: October 26, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventor: Kotaro Nomura
  • Work Method, Work Vehicle And Work System
    Publication number: 20230339320
    Abstract: This tractor includes a work machine, a control device, and an imaging unit. The control device operates as a work machine state detection unit and a display control unit. The work machine state detection unit detects a work machine state relating to the work machine. The imaging unit acquires a work image by imaging the status of work performed by the work machine. The display control unit displays simultaneously on a display device a first display area that displays the detected work machine state, and a second display area that displays the acquired work image.
    Type: Application
    Filed: April 12, 2023
    Publication date: October 26, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: So Ueno, Toshiyuki Miwa
  • Electric Work Machine
    Publication number: 20230339305
    Abstract: A hydraulic excavator as an electric work machine includes an electric motor, a machine-body frame, a battery unit that stores electric power to drive the electric motor, and a fixing mechanism that fixes the battery unit to the machine-body frame. The fixing mechanism has an upper plate and a lower plate that sandwich the battery unit from an up-down direction and a support portion that supports the lower plate on the machine-body frame.
    Type: Application
    Filed: April 10, 2023
    Publication date: October 26, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventor: Kotaro Nomura
  • Heat Pump Device
    Publication number: 20230339292
    Abstract: A heat pump device is provided with: a compressor; an engine; a power generator; and a motor. The compressor pressurizes a refrigerant. The power generator is driven by the engine. The motor operates with power generated by the power generator. In addition, the motor drives the compressor.
    Type: Application
    Filed: June 30, 2021
    Publication date: October 26, 2023
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Shota Imoto, Satoshi Matsushita, Yuichiro Tanaka, Kengo Kimura, Soichiro Kamoda, Terunori Aikawa, Takuma Iwami