公开(公告)号：US20200277906A1

公开(公告)日：2020-09-03

申请号：US16647452

申请日：2018-09-10

申请人： Yanmar Co., Ltd.

发明人： Go ASAI

IPC分类号： F02D41/00 ,  F02D19/08 ,  F02D19/06 ,  F02M33/00

摘要： An internal combustion engine including: an operating state detection unit that detects an operating state of the internal combustion engine; a fuel reforming unit configured to be supplied with a liquid fuel including hydrocarbon and generate a reformed fuel having an octane number larger than that of the supplied liquid fuel; a reformed fuel composition adjusting unit that adjusts the composition of the reformed fuel generated by the fuel reforming unit; and a control device that controls the composition of the reformed fuel by controlling the reformed fuel composition adjusting unit in accordance with the operating state detected by the operating state detection unit.

公开(公告)号：US10738687B2

公开(公告)日：2020-08-11

申请号：US16315984

申请日：2017-06-23

申请人： Yanmar Co., Ltd.

发明人： Taishi Murakami ,  Masayoshi Doui

IPC分类号： F02B37/16 ,  F02B37/18 ,  F02D41/00 ,  F02D19/06 ,  F02B43/02 ,  F02D19/02 ,  F02B43/04 ,  F02B33/22 ,  F02B39/16

摘要： 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.

公开(公告)号：US20200251809A1

公开(公告)日：2020-08-06

申请号：US16652069

申请日：2018-09-27

申请人： Yanmar Co. Ltd.

发明人： Yosuke HANADA

IPC分类号： H01Q1/32 ,  G01S19/36 ,  B60R11/02 ,  B62D49/00

摘要： A GNSS antenna 26 and an inertial measurement unit 25 are placed at a longitudinal center of a unit base 55 mountable onto a work vehicle. A wireless communication unit 27 is placed at the longitudinal one end side of the unit base 55. A wireless communication antenna 28 of the wireless communication unit 27 is placed in a front part of the unit base 55, which is located on the front side of a vehicle body when the unit base 55 is mounted on the work vehicle. The GNSS antenna 26 is provided above the inertial measurement unit 25.

公开(公告)号：US10731617B2

公开(公告)日：2020-08-04

申请号：US16091880

申请日：2017-04-06

申请人： Yanmar Co., Ltd.

发明人： Hiroaki Naganawa

IPC分类号： F02M63/02 ,  F02M35/104 ,  F02B67/00 ,  F02F1/10 ,  F02B61/06 ,  F02F7/00 ,  F02M55/02 ,  F02B67/08 ,  F02M39/00 ,  F02M69/46 ,  F02M26/17 ,  F01P3/02 ,  F02D41/38 ,  F02M51/00 ,  F01P5/12

摘要： An engine including a common rail attached to one side portion of a cylinder block that pivotally supports a crankshaft in a rotatable manner, the one side portion extending along a crankshaft center, and the common rail being configured to supply a fuel to the engine. A flywheel housing that accommodates a flywheel that is rotated integrally with the crankshaft is disposed in one side portion out of opposite side portions of the cylinder block intersecting the one side portion. One end portion of the common rail is disposed above the flywheel housing.

公开(公告)号：US10690069B2

公开(公告)日：2020-06-23

申请号：US15760169

申请日：2016-05-24

申请人： Yanmar Co., Ltd.

发明人： Ryoichi Hagiwara ,  Kazuteru Toshinaga ,  Masayoshi Doi ,  Taishi Murakami ,  Tatsuro Ohsara ,  Osamu Yamagishi

IPC分类号： F02D41/00 ,  F02D19/06 ,  F02D41/30 ,  F02D19/10 ,  F02D41/40 ,  F02D29/02 ,  B63H21/14

摘要： An engine device of the present invention includes 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.

公开(公告)号：US10677182B2

公开(公告)日：2020-06-09

申请号：US16091463

申请日：2017-04-04

申请人： Yanmar Co., Ltd.

发明人： Atsuhito Iwase

IPC分类号： F02D41/00 ,  F02D41/10 ,  F02D41/04 ,  F02D43/00 ,  F02D41/02 ,  F02D45/00 ,  F02D1/02 ,  F02D21/08 ,  F02D41/14 ,  F02M26/05 ,  F02M26/46 ,  F02M26/21 ,  F02M26/00

摘要： In a method for controlling an engine, based on a control map of an engine speed N and a fuel injection amount Q of a common-rail fuel injection unit, a controller calculating the fuel injection amount Q depending on the engine speed N, calculating an injection amount deviation ΔQn as a fuel injection amount increase, and determining that an engine is in a transient state if the injection amount deviation ΔQn exceeds a reference transient injection amount deviation A2 or if a transient injection amount deviation count Xq is larger than or equal to a reference transient injection amount deviation count X2. If it is determined that the engine is in the transient state, the controller controls an EGR unit and a boost controller according to an excess air ratio λ that is an indicator indicating the state of the engine.

公开(公告)号：US10661896B2

公开(公告)日：2020-05-26

申请号：US15521522

申请日：2015-07-07

申请人： Yanmar Co., Ltd.

发明人： Eiichi Ozaki

IPC分类号： B64D27/24 ,  B64D27/04 ,  B64D41/00 ,  B64C39/02 ,  B64C27/08 ,  B64D27/02

摘要： A multicopter having a plurality of propellers is provided with electric motors, at least one main battery, a generator, and an engine. The electric motors drive the propellers. The main battery is a first electric power source that supplies the electric power to the electric motors. The generator is a second electric power source that supplies the electric power to the electric motors. The engine drives the generator. When a remaining capacity of the main battery is less than a threshold, the generator charges the main battery with the electric power that has been converted from motive power from the engine.

公开(公告)号：US10655544B2

公开(公告)日：2020-05-19

申请号：US15765550

申请日：2016-10-05

申请人： Yanmar Co., Ltd.

发明人： Katsuhiro Yamada ,  Atsushi Uehara

IPC分类号： F02D1/08 ,  F02D41/04 ,  F02D41/14 ,  F02D41/20 ,  F02M59/26 ,  F02M59/04 ,  F02M59/10

摘要： An engine comprising: a fuel injection device including a rack and an actuator, the rack being configured to regulate the amount of fuel injected to a combustion chamber, the actuator being configured to control the position of the rack; and a control device that controls fuel injection performed by the fuel injection device based on an instructed revolution number, and that performs a dither control on the actuator, wherein the control device has information of a revolution number variation region that is based on the relationship between a dither frequency in the dither control and an engine revolution number, and upon determining that the instructed revolution number is within the revolution number variation region, changes at least one of the dither frequency and the instructed revolution number. Thus, an engine capable of reducing a periodic variation in engine speed which may be caused by a dither control is provided.

公开(公告)号：US10647401B2

公开(公告)日：2020-05-12

申请号：US15466208

申请日：2017-03-22

申请人： YANMAR CO., LTD.

发明人： Gakuji Tamura ,  Jun Watanabe

IPC分类号： B63H25/42 ,  B63H25/02 ,  B63H21/14 ,  B63H21/21 ,  G05D1/02

摘要： A boat includes: a propulsion device configured to generate propulsion force for a vessel body from driving force from an engine; a detection unit configured to detect a current position, a bow direction, and a movement speed of the vessel body; a steering device configured to change a cruising direction of the vessel body; a steering sensor configured to detect an operation amount of the steering device; and a control device that is connected to the propulsion device, the detection unit, and the steering sensor, and is configured to acquire an operating status of the propulsion device and a detection result obtained by the detection unit and the steering sensor, and to control the propulsion device based on the detection result. The control device executes a turning operation with the propulsion device, when the operation amount of the steering device detected by the steering sensor exceeds a threshold.

公开(公告)号：US10598601B2

公开(公告)日：2020-03-24

申请号：US16087461

申请日：2017-03-06

申请人： Yanmar Co., Ltd. ,  Fuji Electric Co., Ltd.

发明人： Yoshinori Fukui ,  Ryota Kobayashi ,  Tetsuya Yokoyama ,  Tsuyoshi Inoue ,  Yusuke Oda ,  Michiyasu Okada ,  Kozo Akao ,  Ryouichi Higashi

IPC分类号： G01N21/85 ,  G01N21/15 ,  G01N21/3504 ,  G01N21/03

摘要： A gas concentration measuring device including a light emitter and a light receiver which are disposed so as to be opposed to each other with a hollow tube-like measurement pipe interposed therebetween. The device is configured to measure concentration of target gas passing through the measurement pipe using light applied from the light emitter, transmitted through the inside of the measurement pipe, and received by the light receiver. Purge gas guide pipes through which purge gas is introduced into optical systems of the light emitter and the light receiver are connected to a side wall of the measurement pipe. The measurement pipe includes a gas entrance portion having a tapered shape widening from a gas supply port toward a downstream side thereof.