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公开(公告)号：US09598161B2
公开(公告)日：2017-03-21
申请号：US15001796
申请日：2016-01-20
发明人： Tetsushi Achiwa , Keisuke Daikoku
IPC分类号： B63H21/34 , B63H20/24 , F01N3/20 , F01N13/18 , F01N3/04 , F01N3/10 , F01N3/28 , F01N13/10 , F01N13/14
CPC分类号： B63H20/245 , F01N3/046 , F01N3/10 , F01N3/20 , F01N3/2842 , F01N3/2867 , F01N13/10 , F01N13/141 , F01N13/18 , F01N13/1827 , F01N2590/021 , Y02T10/20
摘要： An outboard motor equipped with a four-stroke engine and provided with a catalyst installation structure, in which an exhaust passage is connected to the exhaust ports of the plurality of the cylinders to lead the exhaust gas out of the engine is provided with a catalyst storage chamber configured to store a catalytic converter for cleaning up the exhaust gas, the exhaust passage being integrally formed to the cylinder block, and the catalytic converter is mounted to the catalyst storage chamber by being inserted from a lower side thereof in such a manner as that at least one side end portion thereof is fitted to the catalyst storage chamber to permit expansion of the catalytic converter in an axial direction thereof.
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公开(公告)号：US09677467B2
公开(公告)日：2017-06-13
申请号：US14787975
申请日：2015-04-24
发明人： Tetsushi Achiwa , Keisuke Daikoku
IPC分类号： F02B75/00 , F02M35/116 , F02M35/16 , F02M61/14 , F02B61/04 , F02B75/22 , F02M55/02 , F02M35/108 , F02B23/08 , F02M69/04 , F02B1/04 , F02M35/10 , F02B75/12
CPC分类号： F02B75/007 , F02B1/04 , F02B23/08 , F02B61/045 , F02B75/22 , F02B2075/125 , F02M35/10045 , F02M35/10072 , F02M35/108 , F02M35/116 , F02M35/16 , F02M35/167 , F02M55/025 , F02M61/14 , F02M69/044 , Y02T10/123 , Y02T10/125
摘要： Even in the case where a crankshaft extends in a substantially vertical direction, it is possible to reduce a situation that sprays of fuel injected from injectors may adhere to inner wall surfaces of intake passages, and it is possible to make the fuel supply to combustion chambers stable. Provided is a vertical engine including: a pair of intake passages (911a and 911b) which are arranged in an up and down direction with the interposition of a central axis of a cylinder (241) therebetween; a pair of intake valves (41L1 and 41L2) which open and close the pair of intake passages; and fuel injectors (70L1 and 70L2) which inject fuel to the pair of intake passages; wherein: the fuel injectors are arranged so that fuel injection directions by the fuel injectors can go not toward valve stems (411) of the intake valves provided in the upper and lower intake passages respectively but toward the backs of valve heads of the intake valves on a central axis (C1) side of the cylinder and the fuel injectors are disposed so that a central axis (FC2) of injection of the fuel injector into the lower intake passage can be closer to the central axis side of the cylinder than a central axis (CF1) of injection of the fuel injector into the upper intake passage.
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公开(公告)号：US09670853B2
公开(公告)日：2017-06-06
申请号：US15064093
申请日：2016-03-08
发明人： Tetsushi Achiwa , Keisuke Daikoku
IPC分类号： B63B35/73 , F02B61/04 , F02M35/16 , F02D41/00 , B63H20/00 , F02M37/20 , F02M25/08 , F02M35/10 , F02M37/04 , F02M37/22 , B63H20/32 , F02D11/10
CPC分类号： F02D41/003 , B63H20/00 , B63H20/32 , F02B61/045 , F02D2011/102 , F02D2400/18 , F02D2400/21 , F02M25/0854 , F02M25/0872 , F02M35/10222 , F02M35/10242 , F02M35/10249 , F02M35/116 , F02M35/16 , F02M35/167 , F02M37/04 , F02M37/20 , F02M37/22
摘要： An outboard motor has a vertical-shaft vee engine unit provided with a crankshaft arranged approximately vertically and left and right cylinder units aligned to be open backward in a “V” shape as seen in a plan view. A surge tank and an air intake system unit provided with an intake pipe to connect the surge tank to intake ports of the left and right cylinder heads are arranged in a center of a width direction of a rear side of the engine unit. In addition, an electronic control unit is arranged in an approximate center of a height direction in the right side of the air intake system unit. Furthermore, a high-pressure fuel filter is arranged in an approximate center of a height direction in the left side of the air intake system unit. Moreover, a vapor separator embedded with a high-pressure fuel pump is arranged under the high-pressure fuel filter.
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公开(公告)号：US09481437B2
公开(公告)日：2016-11-01
申请号：US15063704
申请日：2016-03-08
发明人： Tetsushi Achiwa , Keisuke Daikoku
摘要： An outboard motor includes a drive shaft that transmits rotational power from an engine, a shift unit provided in the middle of the drive shaft, and a water pump that feeds a coolant to the engine. The drive shaft has a first input shaft that receives rotational power transmitted from the engine and a second input shaft that receives rotational power transmitted from the first input shaft. The shift unit has an upper gear rotating in synchronization with the first input shaft, an intermediate gear meshing with the upper gear at all times, and an intermediate shaft extending to the rear side from the intermediate gear and rotating in synchronization. The oil pump as an accessory is operated by the rotational power transmitted to the intermediate shaft.
摘要翻译： 舷外马达包括传动来自发动机的旋转动力的驱动轴，设置在驱动轴中间的换档单元以及向发动机供给冷却剂的水泵。 驱动轴具有接收从发动机传递的旋转动力的第一输入轴和接收从第一输入轴传递的旋转动力的第二输入轴。 变速单元具有与第一输入轴同步旋转的上齿轮，始终与上齿轮啮合的中间齿轮，以及从中间齿轮向后侧延伸并同步旋转的中间轴。 作为附件的油泵通过传递到中间轴的旋转动力来操作。
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公开(公告)号：US09840317B2
公开(公告)日：2017-12-12
申请号：US15010254
申请日：2016-01-29
发明人： Tetsushi Achiwa , Keisuke Daikoku
CPC分类号： B63H20/285 , F01P3/202 , F01P2050/04 , F01P2050/12
摘要： An outboard motor includes a cooling water passage structure, in which a combustion chamber periphery water jacket through which the cooling water flows around the combustion chamber and an exhaust port periphery water jacket through which the cooling water flows around the exhaust port are formed in the cylinder head, a cylinder periphery water jacket through which the cooling water flows around the cylinder is formed in the cylinder block, and an exhaust passage periphery water jacket through which the cooling water flows around the exhaust passage is formed around the exhaust passage. The water jackets are connected such that the cooling water from the water passage will flow through the combustion chamber periphery water jacket, the exhaust port periphery water jacket, the cylinder periphery water jacket, and the exhaust passage periphery water jacket in order.
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公开(公告)号：US09764811B2
公开(公告)日：2017-09-19
申请号：US15010471
申请日：2016-01-29
发明人： Tetsushi Achiwa , Keisuke Daikoku
CPC分类号： B63H20/12 , B63H20/245 , B63H2020/003
摘要： In an outboard motor equipped with a V-type four-cycle engine provided with a left bank extending leftward and obliquely rearward and a right bank extending rightward and obliquely rearward, a drive shaft is perpendicularly disposed in the outboard motor body so as to transmit a driving force from the engine to a propeller disposed below the engine, and center positions of the left side exhaust passage and the right side exhaust passage are positioned forward than the drive shaft in a front-and-rear direction in an advancing direction of the outboard motor.
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公开(公告)号：US09708044B2
公开(公告)日：2017-07-18
申请号：US15063744
申请日：2016-03-08
发明人： Tetsushi Achiwa , Keisuke Daikoku
摘要： Disclosed is an outboard motor including a drive shaft that transmits rotational power from an engine, a shift unit provided in the middle of the drive shaft, and a water pump that feeds a coolant to the engine. The drive shaft has a first input shaft that receives the rotational power transmitted from the engine and a second input shaft that receives the rotational power transmitted from the first input shaft. The shift unit and the water pump are integrated into a single shift unit module installed detachably to the lower unit casing.
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公开(公告)号：US10519825B2
公开(公告)日：2019-12-31
申请号：US15945377
申请日：2018-04-04
发明人： Tetsushi Achiwa
摘要： A crankshaft lubricating oil passage structure of a V-shaped engine includes a main oil passage and a sub oil passage. The V-shaped engine includes a pair of banks. The pair of banks includes cylinders and is disposed in a V shape with respect to the crankshaft. The V bank angle as an included angle of the cylinders of the respective banks is set at a narrow angle. The main oil passage is provided between the pair of banks in the cylinder block or the crankcase. The sub oil passage extends from the main oil passage to the bearing portion of the crankshaft and guides lubricating oil to the bearing portion. The main oil passage is formed by connecting divided passage portions that are divided partway in an axial direction by an oil passage connection member that is a separate member from the cylinder block or the crankcase.
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公开(公告)号：US10036299B2
公开(公告)日：2018-07-31
申请号：US15057188
申请日：2016-03-01
发明人： Tetsushi Achiwa , Keisuke Daikoku
CPC分类号： F01N13/004 , B63H20/24 , F01N3/10 , F01N13/001 , F01N13/10 , F01N13/105 , F01N13/107 , F01N2590/021
摘要： An exhaust apparatus of an outboard motor equipped with a four-stroke engine includes an exhaust pipe having a cylindrical shape and being connected to an exhaust passage of an engine holder, wherein the exhaust pipe is disposed in an exhaust passage of the exhaust manifold in a manner being erected upright in parallel to the crankshaft, and the exhaust pipe has an upper end opened in an upper portion of the exhaust passage and a lower end supporting the cylinder block, and the exhaust manifold and the exhaust pipe are provided with a gap therebetween in a plan view acting as an exhaust collection space adapted to collect exhaust gas from the exhaust manifold.
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公开(公告)号：US09869228B2
公开(公告)日：2018-01-16
申请号：US14978349
申请日：2015-12-22
发明人： Tetsushi Achiwa , Keisuke Daikoku
CPC分类号： F01N13/004 , F01N13/08 , F01N13/10 , F01N13/1805
摘要： In an exhaust passage structure in a V-type four-stroke engine of an outboard motor, an exhaust passage is connected to the respective exhaust ports of a plurality of cylinders so that a first exhaust passage portion is provided on at least one lateral side of the cylinder block in a width direction and collects exhaust gas discharged from the respective exhaust ports of the plurality of cylinder assemblies, while a second exhaust passage portion connects the first exhaust passage portion with an exhaust muffler chamber installed outside the engine, and an exhaust guiding portion is provided so as to oppose to a joint surface between the cylinder block and the cylinder head in a manner to be located in the first exhaust passage portion to guide the exhaust gas discharged from the exhaust ports to a connecting portion between the first exhaust passage portion and the second exhaust passage portion.
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