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公开(公告)号：US11634183B2
公开(公告)日：2023-04-25
申请号：US16891887
申请日：2020-06-03
申请人： YANMAR CO., LTD.
发明人： Yoshiaki Kurokawa
摘要： 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.
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公开(公告)号：US11408324B2
公开(公告)日：2022-08-09
申请号：US16496855
申请日：2017-12-12
申请人： Yanmar Co., Ltd.
发明人： Masataka Uchibori
摘要： An engine device including an exhaust manifold provided on an exhaust side surface which is a first side surface of a cylinder head and a two-stage turbocharger that is driven by exhaust gas discharged from the exhaust manifold. The two-stage turbocharger includes a high-pressure turbocharger coupled to the exhaust manifold and a low-pressure turbocharger coupled to the high-pressure turbocharger. The high-pressure turbocharger is arranged on a side of the exhaust manifold. The low-pressure turbocharger is arranged above the exhaust manifold. An exhaust gas outlet of the high-pressure turbocharger and an exhaust gas inlet of the low-pressure turbocharger are coupled with each other through a flexible high-pressure exhaust gas pipe.
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公开(公告)号：US11339747B2
公开(公告)日：2022-05-24
申请号：US16496879
申请日：2017-12-26
申请人： Yanmar Co., Ltd.
发明人： Ippei Suzuki
摘要： An engine device including an exhaust manifold provided on an exhaust side surface of a cylinder head, and an exhaust pressure sensor configured to detect an exhaust gas pressure in the exhaust manifold. The exhaust pressure sensor is attached to the cylinder head. The exhaust pressure sensor is connected to the exhaust manifold through an exhaust pressure bypass path provided in the cylinder head and an exhaust pressure detection pipe connecting the exhaust pressure bypass path to the exhaust manifold. A cooling water passage is provided nearby the exhaust pressure bypass path, in the cylinder head.
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公开(公告)号：US11297752B2
公开(公告)日：2022-04-12
申请号：US16478039
申请日：2018-01-15
申请人： YANMAR CO., LTD.
发明人： Takeshi Kishimoto , Kazuyuki Kotani , Toshikazu Kokubunji , Tadayoshi Sukigara , Kazuyoshi Tutiya
摘要： A mulching machine comprising a machine body that includes a tilling unit performing tilling, a ridge forming unit forming a ridge with the tilled soil, a mulch film laying unit drawing a mulch film from a film roll and laying it over the ridge, and ground wheels supporting the machine body. The tilling unit and the ridge forming unit are arranged in this order from the front in the traveling direction of the mulching machine, and the film roll is positioned such that its center of gravity does not overlap the ground wheels and is located forward of the ground wheels in the traveling direction.
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公开(公告)号：US11292335B2
公开(公告)日：2022-04-05
申请号：US16743825
申请日：2020-01-15
申请人： YANMAR CO., LTD.
发明人： Yoshiaki Kurokawa
摘要： The working vehicle includes an engine installed in a front portion of a traveling machine body, and a post-processing device configured to purify exhaust gas from the engine. The post-processing device is mounted on an upper side of the engine. The engine and the post-processing device are covered with a hood. A hood shield plate is disposed on a rear surface side of the hood and covers at least the post-processing device from a rear surface. A heat insulating layer is formed between an operating seat disposed on a rear side of the hood and the hood shield plate.
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公开(公告)号：US11198404B2
公开(公告)日：2021-12-14
申请号：US16658719
申请日：2019-10-21
申请人： YANMAR CO., LTD.
发明人： Daisuke Takii
IPC分类号： B60R16/023 , F02B65/00 , F02B77/00 , B60R16/02
摘要： A tractor including an intake pipe for supplying intake air to an intake unit of an engine body, and an engine harness for electrically connecting the engine body and an engine controller to each other. The intake pipe is provided with a rib formed along the longitudinal direction of the intake pipe, and the engine harnesses is partially supported by the rib.
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公开(公告)号：US11122728B2
公开(公告)日：2021-09-21
申请号：US16466603
申请日：2017-11-30
申请人： Yanmar Co., Ltd.
发明人： Takeshi Miyazaki , Toshiyuki Miwa
摘要： A tractor in which a lift valve of a hydraulic system for lifting up/down a work machine is mechanically coupled to a lift lever, and conditions for an engine startup are set as follows: a reverser lever is at a neutral position thereof; a PTO (power take-off) clutch is disengaged; a seat switch is ON; and the lift lever is at a lowermost position thereof. A switch driving unit is provided on a side face of the lift lever so that the side face is orthogonal to a turning direction of the lift lever; a switch is provided so as to be opposed to the switch driving unit when the lift lever is turned to be at the lowermost position; and the lift lever at the lowermost position is detected by the switch.
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公开(公告)号：US11111866B2
公开(公告)日：2021-09-07
申请号：US16884171
申请日：2020-05-27
申请人： YANMAR CO., LTD.
发明人： Ryoichi Hagiwara , Kazuteru Toshinaga , Masayoshi Doi , Taishi Murakami , Tatsuro Ohsara , Osamu Yamagishi
摘要： An engine device including an intake manifold configured to supply air into a cylinder; an exhaust manifold configured to output exhaust gas from the cylinder; a gas injector which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve configured to inject a liquid fuel into the cylinder for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.
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公开(公告)号：US20210180294A1
公开(公告)日：2021-06-17
申请号：US16605169
申请日：2018-04-18
申请人： Yanmar Co., Ltd.
发明人： Takayuki SHIROUZU , Masahiro ITANI
摘要： A control device for a hydraulic machine such as a revolving excavator work machine in which a load-sensing pump control system is adopted. The control device prevents variation in pump control characteristics among a plurality of hydraulic machines and also prevents variation in the operating speed of individual drive units in the hydraulic machines. The control device; and it is configured to perform, by using a storage unit and a calculation unit outside the hydraulic machine, a process of causing an engine rotation state and a hydraulic actuator operation state to be specific states and calculating a correction rate for a control output value of an electromagnetic proportional valve for generating a control pressure, based on detection of an error in the flow rate of a hydraulic pump or its substitute numerical value such as the rotational speed and the like of a traveling motor which is easily detectable from outside.
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公开(公告)号：US11031535B2
公开(公告)日：2021-06-08
申请号：US16344745
申请日：2017-09-27
申请人： Yanmar Co., Ltd.
摘要： A thermoelectric power generation system including a plurality of thermoelectric power generation devices. Each of the thermoelectric power generation devices includes: a heating unit having a heat medium passage in which a heat medium flows; a cooling unit having a cooling liquid passage in which a cooling liquid flows; a thermoelectric element having the heating unit and the cooling unit so as to generate power by utilizing a temperature difference between a condensation temperature of the heat medium and a temperature of the cooling liquid; and a heat transfer pipe communicated with the heat medium passage to form a circulation path in which the heat medium circulates. The heat transfer pipes of the respective thermoelectric power generation devices are arranged in a single flow path in which a high temperature fluid flows. The heat medium passages of the thermoelectric power generation devices are structured to communicate with each other.
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