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公开(公告)号：US20210297007A1
公开(公告)日：2021-09-23
申请号：US17263684
申请日：2019-08-01
Applicant: YANMAR POWER TECHNOLOGY CO., LTD.
Inventor： Tomohiro Sawano , Kazuki Iwamura , Shimpei Kitano
Abstract: A power conversion apparatus 1 has an inverter for converting DC power into AC power. This control device for the power conversion apparatus includes: a current limiting unit for limiting a target current value to a predetermined limit value or less when the target current value is greater than the limit value; and a control unit for controlling the inverter on the basis of the target current value after the current limiting performed by the current limiting unit.
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公开(公告)号：US20210267116A1
公开(公告)日：2021-09-02
申请号：US17272253
申请日：2019-07-11
Applicant: Yanmar Power Technology Co., Ltd.
Inventor： Yasuto Nishii
Abstract: To enter a desired travel route in scheduled travel routes including a plurality of travel routes, and start working from the desired travel route. An automatic travel system is provided with: a route generation unit for generating scheduled travel routes including a plurality of travel routes on which a working vehicle is caused to automatically run; an automatic travel control unit capable of causing the working vehicle to automatically run along the scheduled travel routes; an information acquisition unit for acquiring positional information and orientation information of the working vehicle; and a specifying unit for specifying, before automatic travel is started by the working vehicle, an automatic travel candidate route on which the working vehicle can start the automatic travel. On the basis of the positional information and the orientation information of the working vehicle which are acquired by the information acquisition unit, the specifying unit sets a candidate specification area ahead of the working vehicle and in the rear thereof, and specifies, out of the plurality of travel routes, a travel route included in the candidate specification area as an automatic travel candidate route.
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公开(公告)号：US11066984B2
公开(公告)日：2021-07-20
申请号：US16907563
申请日：2020-06-22
Applicant: Yanmar Power Technology Co., Ltd.
Inventor： Taishi Murakami , Masayoshi Doul
IPC: F02B37/16 , F02B37/18 , F02D41/00 , F02B43/02 , F02D19/02 , F02D19/06 , F02B43/04 , F02B33/22 , F02B39/16
Abstract: 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.
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公开(公告)号：US20210164373A1
公开(公告)日：2021-06-03
申请号：US17071982
申请日：2020-10-15
Applicant: Yanmar Power Technology Co., Ltd.
Inventor： Yu Matsui , Naotoshi Furukawa
IPC: F01N3/021 , F01N13/10 , F02F1/24 , F02M35/104 , F02M26/22 , F01N11/00 , F01P5/06 , F01P5/04 , F02M35/10
Abstract: An engine device including an exhaust gas purification device above 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 from the flat portion and are fixed to the cylinder head. The flat portion and the leg portions are formed integrally. Portions between the legs are each formed in an arch-shape.
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公开(公告)号：US20210031895A1
公开(公告)日：2021-02-04
申请号：US16967958
申请日：2019-01-09
Applicant: YANMAR POWER TECHNOLOGY CO., LTD.
Inventor： Hiroyuki Koyama
Abstract: A planing boat including: a hull having a boarding area; a screw unit having a screw, and configured to be rotatable with respect to the hull so that the expulsion direction of a water current by the screw can vary by 360 degrees; and a direction change mechanism having a turning drive force source, and configured to change the expulsion direction by rotating the screw unit with respect to the hull with a drive force of the turning drive force source.
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Patent Agency Ranking
公开(公告)号：US20210010400A1
公开(公告)日：2021-01-14
申请号：US17019358
申请日：2020-09-14
Applicant: Yanmar Power Technology Co., Ltd.
Inventor： Tomoyuki Kimura , Hisato Inokuchi
IPC: F01M13/04 , F02B39/14 , F02M25/06 , F02M35/16 , F01M9/10 , F02B37/00 , F01M13/00 , F02M35/10 , F02B67/00 , F01M11/02 , F01M13/02 , F02B37/02
Abstract: 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. The positive crankcase ventilation device 69 has, in its side surface, a blowby-gas discharge port 67 connected with a gas conduit 68 through which blowby gas is delivered to an intake-side inlet of the turbocharger 60.
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公开(公告)号：US20200340423A1
公开(公告)日：2020-10-29
申请号：US16762559
申请日：2018-11-20
Applicant: YANMAR POWER TECHNOLOGY CO., LTD.
Inventor： Tomoaki Kitagawa , Masahiro Akei
Abstract: A cylinder head includes: a plurality of exhaust ports configured to lead out exhaust gas from combustion chambers; a plurality of intake ports configured to introduce fresh air into the combustion chambers; an intake air aggregate part configured to aggregate the plurality of intake ports; and a second EGR pipe in which EGR gas flows, wherein exhaust outlets of the plurality of exhaust ports and an EGR gas inlet of the second EGR pipe are arranged side-by-side on a flat left side surface, and a fresh air inlet of the intake air aggregate part and an EGR gas outlet of the second EGR pipe are arranged side-by-side on a flat right side surface.
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公开(公告)号：US20200318586A1
公开(公告)日：2020-10-08
申请号：US16768182
申请日：2018-10-22
Applicant: YANMAR POWER TECHNOLOGY CO., LTD.
Inventor： Masataka Uchibori , Makoto Shimono , Ai Iketani
Abstract: This multi-cylinder engine intake structure is provided with a fresh air distribution chamber 20 into which a plurality of fresh air distribution openings 25 communicating with the individual intake ports 12 are opened, and a gas collection chamber 30. The gas collection chamber 30 includes a communication region 30B into which a first communication opening 7a communicating with the fresh air distribution chamber 20 is opened, a first mixture region 30A into which an air inlet 31a and an EGR gas inlet 32a are opened and which is positioned upstream of the communication region 30B in a flow direction of a mixture gas M of air A and EGR gas R, and a second mixture region 30C positioned downstream of the communication region 30B in the flow direction of the mixture gas M.
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公开(公告)号：US20200291876A1
公开(公告)日：2020-09-17
申请号：US16892224
申请日：2020-06-03
Applicant: Yanmar Power Technology Co., Ltd.
Inventor： Katsuhiro Nishimura , Koichi Hirose
Abstract: 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.
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公开(公告)号：US20250146446A1
公开(公告)日：2025-05-08
申请号：US19002895
申请日：2024-12-27
Applicant: YANMAR POWER TECHNOLOGY CO., LTD.
Inventor： Yu MATSUI , Masato KISHIURA
Abstract: An engine includes an exhaust manifold, and an EGR pipe having a first EGR pipe portion directly connected to the exhaust manifold, and a cylinder head to which the first EGR pipe portion is directly connected. The EGR pipe portion has a second EGR pipe portion having a curved part which is an L-shape. The first EGR pipe portion and the exhaust manifold are integrally formed inside the exhaust manifold. The EGR pipe further has a third EGR pipe portion located in a rear end portion of the cylinder head, and the first EGR pepe portion, third EGR pepe portion, and the exhaust manifold are integrally formed. The first EGR pipe portion is located on a first side of the cylinder head and the second EGR pipe portion is located on a second side of the cylinder head which is opposite from thee first side.
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