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公开(公告)号：US09938890B2
公开(公告)日：2018-04-10
申请号：US14798683
申请日：2015-07-14
发明人： Mashu Kurata , Yoshikazu Yamada
CPC分类号： F02B25/02 , F01M2011/022 , F02B9/02 , F02B33/04 , F02F1/22 , F02F7/0036 , F02M26/41
摘要： A uniflow two-stroke engine includes: a cylinder receiving a piston such that the piston can reciprocate therein and defining a combustion chamber above the piston; an exhaust port having one end in communication with an upper end portion of the cylinder; a scavenging port having a scavenging orifice at one end, the scavenging orifice being in communication with a lower part of a side portion of the cylinder such that the scavenging port is selectively brought into communication with and shut off from the combustion chamber by the piston; and an exhaust gas recirculation passage having one end in communication with a part of the side portion of the cylinder above the scavenging port and the other end in communication with the scavenging port such that the exhaust gas recirculation passage is selectively brought into communication with and shut off from the combustion chamber by the piston.
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公开(公告)号：US20140209054A1
公开(公告)日：2014-07-31
申请号：US14139406
申请日：2013-12-23
发明人： Yasuhiro Shimizu , Sei Watanabe , Yoshikazu Yamada , Toru Kawai
IPC分类号： F16C7/02
摘要： In a premixed compression self-ignition engine which is compact but capable of exerting a high output, an intermediate portion of a trigonal link is rotatably supported on a crankpin, a large end portion of a connecting rod is connected to one end portion of the trigonal link, and a swing link swingably supported on a fulcrum shaft is connected to another end portion of the trigonal link. The engine includes: an intake port open to a crank chamber; a reed valve mounted in the intake port; a scavenging port configured to guide fresh air from the crank chamber into a cylinder bore in a downward stroke of a piston; an exhaust port provided in a cylinder head and open to a top portion of the cylinder bore; and an exhaust valve configured to be opened before the piston opens the scavenging port in the downward stroke of the piston.
摘要翻译： 在紧凑但能够施加高输出的预混合压缩自点火发动机中，三通连杆的中间部分可旋转地支撑在曲柄销上，连杆的大端部连接到三角形的一端 并且可摆动地支撑在支点轴上的摆动连杆连接到三角连杆的另一端部。 发动机包括：通向曲轴室的进气口; 安装在进气口的簧片阀; 清扫口构造成在活塞的向下行程中将新鲜空气从曲柄室引导到气缸孔中; 排气口，设置在气缸盖中并且通向气缸孔的顶部; 以及构造成在活塞在活塞的向下行程中打开清扫口之前打开的排气阀。
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公开(公告)号：US09546632B2
公开(公告)日：2017-01-17
申请号：US14514600
申请日：2014-10-15
发明人： Yoshikazu Yamada , Mashu Kurata
IPC分类号： F01P1/04 , F02M61/14 , F02B33/04 , F02B41/00 , F02M69/04 , F02B25/04 , F02D15/02 , F02B75/02 , F02F3/22 , F01M1/08 , F01P3/08 , F02B3/06
CPC分类号： F02M61/14 , F01M1/08 , F01P3/08 , F02B3/06 , F02B25/04 , F02B33/04 , F02B41/00 , F02B2075/025 , F02D15/02 , F02F3/22 , F02M26/01 , F02M69/042 , F05C2201/021
摘要： In a two-stroke engine including a scavenging port (43b) having an open end (42d) opening out in a side wall of the cylinder bore (3a) and communicating with a crank chamber (2a), the open end being configured to be closed and opened by the piston (22), a fuel injection device (71) is mounted on the engine main body so as to inject fuel onto a back side of the piston and/or a part of the side wall of the cylinder bore located under the piston via the open end of the scavenging port or via the open lower end of the cylinder bore. The fuel deposited on the surfaces of the piston and the cylinder inner wall promotes the cooling of such parts.
摘要翻译： 在包括在气缸孔（3a）的侧壁中开口并与曲轴室（2a）连通的开口端（42d）的扫气口（43b）的二冲程发动机中，所述开口端构造成 通过活塞（22）关闭和打开，燃料喷射装置（71）安装在发动机主体上，以将燃料喷射到活塞的背侧和/或位于气缸孔的侧壁的一部分 在活塞下方通过扫气口的开口端或气缸孔的敞开的下端。 沉积在活塞和气缸内壁的表面上的燃料促进了这些部件的冷却。
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公开(公告)号：US09429067B2
公开(公告)日：2016-08-30
申请号：US14514572
申请日：2014-10-15
发明人： Yoshikazu Yamada , Mashu Kurata
CPC分类号： F02B25/04 , F02B33/30 , F02B75/02 , F02B75/32 , F02B2075/025 , F02F7/0036
摘要： Provided is a two stroke engine that can vary the timing of opening and closing the scavenging port (43) by using a highly simple structure. An end of the scavenging port (43) on the side of the combustion chamber (44) is defined by scavenging orifices (42c) formed in a cylinder sleeve (42), and a shutter (73, 74) is provided on the cylinder sleeve so as to selectively project into the scavenging orifices (42c) from an upper edge (42d) thereof by moving along an axial line (3X) of the cylinder bore (3a).
摘要翻译： 提供一种二冲程发动机，其可以通过使用非常简单的结构来改变打开和关闭清除口（43）的时间。 在燃烧室（44）侧的清扫口（43）的端部由形成在气缸套（42）中的扫气孔（42c）限定，而气缸套（73,74）设置在气缸套 以便通过沿着气缸孔（3a）的轴线（3X）移动而从其上边缘（42d）选择性地突出到扫气孔（42c）中。
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公开(公告)号：US09074618B2
公开(公告)日：2015-07-07
申请号：US14139406
申请日：2013-12-23
发明人： Yasuhiro Shimizu , Sei Watanabe , Yoshikazu Yamada , Toru Kawai
摘要： In a premixed compression self-ignition engine which is compact but capable of exerting a high output, an intermediate portion of a trigonal link is rotatably supported on a crankpin, a large end portion of a connecting rod is connected to one end portion of the trigonal link, and a swing link swingably supported on a fulcrum shaft is connected to another end portion of the trigonal link. The engine includes: an intake port open to a crank chamber; a reed valve mounted in the intake port; a scavenging port configured to guide fresh air from the crank chamber into a cylinder bore in a downward stroke of a piston; an exhaust port provided in a cylinder head and open to a top portion of the cylinder bore; and an exhaust valve configured to be opened before the piston opens the scavenging port in the downward stroke of the piston.
摘要翻译： 在紧凑但能够施加高输出的预混合压缩自点火发动机中，三通连杆的中间部分可旋转地支撑在曲柄销上，连杆的大端部连接到三角形的一端 并且可摆动地支撑在支点轴上的摆动连杆连接到三角连杆的另一端部。 发动机包括：通向曲轴室的进气口; 安装在进气口的簧片阀; 清扫口构造成在活塞的向下行程中将新鲜空气从曲柄室引导到气缸孔中; 排气口，设置在气缸盖中并且通向气缸孔的顶部; 以及构造成在活塞在活塞的向下行程中打开清扫口之前打开的排气阀。
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公开(公告)号：US20150184579A1
公开(公告)日：2015-07-02
申请号：US14514572
申请日：2014-10-15
发明人： Yoshikazu Yamada , Mashu Kurata
CPC分类号： F02B25/04 , F02B33/30 , F02B75/02 , F02B75/32 , F02B2075/025 , F02F7/0036
摘要： Provided is a two stroke engine that can vary the timing of opening and closing the scavenging port (43) by using a highly simple structure. An end of the scavenging port (43) on the side of the combustion chamber (44) is defined by scavenging orifices (42c) formed in a cylinder sleeve (42), and a shutter (73, 74) is provided on the cylinder sleeve so as to selectively project into the scavenging orifices (42c) from an upper edge (42d) thereof by moving along an axial line (3X) of the cylinder bore (3a).
摘要翻译： 提供一种二冲程发动机，其可以通过使用非常简单的结构来改变打开和关闭清除口（43）的时间。 在燃烧室（44）侧的清扫口（43）的端部由形成在气缸套（42）中的扫气孔（42c）限定，而气缸套（73,74）设置在气缸套 以便通过沿着气缸孔（3a）的轴线（3X）移动而从其上边缘（42d）选择性地突出到扫气孔（42c）中。
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公开(公告)号：US20150184563A1
公开(公告)日：2015-07-02
申请号：US14514520
申请日：2014-10-15
发明人： Yoshikazu Yamada , Mashu Kurata
CPC分类号： F01M11/02 , F01L1/06 , F01L1/08 , F01L1/10 , F01L1/12 , F01L1/146 , F01L1/18 , F01L3/205 , F01L2105/00 , F01M1/02 , F01M1/08 , F01M2001/083 , F01M2011/022 , F02B75/32 , F02B2075/025 , F02F1/20 , F02F1/22 , F02F7/0036
摘要： In a cylinder lubrication system for a two-stroke engine, a plurality of lubricating oil supply openings (78) open out in the inner circumferential surface of the cylinder (42) at a point lower than a top ring (22b) of a piston (22) located at a bottom dead center. The lubricating oil supply openings are configured to provide a larger amount of lubricating oil in the thrust side and anti-thrust side of the cylinder than in a remaining part of the cylinder. Thereby, the consumption of lubricating oil and the emission of undesired substances can be minimized while providing an optimum lubrication of the sliding part between the piston and the cylinder.
摘要翻译： 在用于二冲程发动机的气缸润滑系统中，多个润滑油供给开口（78）在比活塞的顶环（22b）低的点处在气缸（42）的内圆周表面上开口 22）位于下死点。 润滑油供给开口构造成在气缸的推力侧和抗推力侧提供比在气缸的剩余部分更大量的润滑油。 因此，可以最小化润滑油的消耗和不期望的物质的排放，同时在活塞和气缸之间提供滑动部件的最佳润滑。
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公开(公告)号：US20150184556A1
公开(公告)日：2015-07-02
申请号：US14514504
申请日：2014-10-15
发明人： Yoshikazu Yamada , Mashu Kurata
CPC分类号： F01L1/34 , F01L1/053 , F01L1/146 , F01L1/38 , F01L13/0036 , F02B25/04 , F02B2075/025 , F02D13/0265 , F02M26/01
摘要： An OHV engine comprises a first and second cam carried by a camshaft rotatably supported by a crankcase to be rotatively actuated by a crankshaft, first and second lower rocker arms pivotally supported by a lower rocker shaft adjacent to each other, and configured to be actuated by the first and second cams, respectively, a clutch member mounted on the second rocker arm in an axially slidable and rotationally fast manner, the clutch member being axially moveable between an engaged position and a disengaged position, the clutch member being provided with an engagement recess configured to receive a corresponding engagement projection of the first lower rocker arm for a joint pivotal movement of the first and second lower rocker arms when the clutch member is at the engaged position, and an actuator for causing the clutch member to move axially between the engaged position and the disengaged position.
摘要翻译： OHV发动机包括由凸轮轴承载的第一和第二凸轮，所述凸轮轴可旋转地由曲轴箱支撑以由曲轴旋转地驱动，第一和第二下摇臂由彼此相邻的下摇臂轴可枢转地支撑，并且构造成由 所述第一和第二凸轮分别以可轴向和旋转的方式安装在所述第二摇臂上的离合器构件，所述离合器构件在接合位置和脱离位置之间可轴向移动，所述离合器构件设置有接合凹部 被构造成当所述离合器构件处于所述接合位置时，所述第一下摇臂的接合突起用于所述第一和第二下摇臂的关节枢转运动;以及致动器，用于使所述离合器构件在所述接合位置之间轴向移动 位置和脱离位置。
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公开(公告)号：US09926821B2
公开(公告)日：2018-03-27
申请号：US14514520
申请日：2014-10-15
发明人： Yoshikazu Yamada , Mashu Kurata
IPC分类号： F01M11/02 , F01M1/02 , F02F7/00 , F01L1/06 , F01L1/08 , F01L1/10 , F01L1/12 , F01L1/14 , F01L1/18 , F01L3/20 , F01M1/08 , F02F1/22 , F02F1/20 , F02B75/32 , F02B75/02
CPC分类号： F01M11/02 , F01L1/06 , F01L1/08 , F01L1/10 , F01L1/12 , F01L1/146 , F01L1/18 , F01L3/205 , F01L2105/00 , F01M1/02 , F01M1/08 , F01M2001/083 , F01M2011/022 , F02B75/32 , F02B2075/025 , F02F1/20 , F02F1/22 , F02F7/0036
摘要： In a cylinder lubrication system for a two-stroke engine, a plurality of lubricating oil supply openings (78) open out in the inner circumferential surface of the cylinder (42) at a point lower than a top ring (22b) of a piston (22) located at a bottom dead center. The lubricating oil supply openings are configured to provide a larger amount of lubricating oil in the thrust side and anti-thrust side of the cylinder than in a remaining part of the cylinder. Thereby, the consumption of lubricating oil and the emission of undesired substances can be minimized while providing an optimum lubrication of the sliding part between the piston and the cylinder.
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公开(公告)号：US09359920B2
公开(公告)日：2016-06-07
申请号：US14514504
申请日：2014-10-15
发明人： Yoshikazu Yamada , Mashu Kurata
CPC分类号： F01L1/34 , F01L1/053 , F01L1/146 , F01L1/38 , F01L13/0036 , F02B25/04 , F02B2075/025 , F02D13/0265 , F02M26/01
摘要： An OHV engine comprises a first and second cam carried by a camshaft rotatably supported by a crankcase to be rotatively actuated by a crankshaft, first and second lower rocker arms pivotally supported by a lower rocker shaft adjacent to each other, and configured to be actuated by the first and second cams, respectively, a clutch member mounted on the second rocker arm in an axially slidable and rotationally fast manner, the clutch member being axially moveable between an engaged position and a disengaged position, the clutch member being provided with an engagement recess configured to receive a corresponding engagement projection of the first lower rocker arm for a joint pivotal movement of the first and second lower rocker arms when the clutch member is at the engaged position, and an actuator for causing the clutch member to move axially between the engaged position and the disengaged position.
摘要翻译： OHV发动机包括由凸轮轴承载的第一和第二凸轮，所述凸轮轴可旋转地由曲轴箱支撑以由曲轴旋转地驱动，第一和第二下摇臂由彼此相邻的下摇臂轴可枢转地支撑，并且构造成由 所述第一和第二凸轮分别以可轴向和旋转的方式安装在所述第二摇臂上的离合器构件，所述离合器构件在接合位置和脱离位置之间可轴向移动，所述离合器构件设置有接合凹部 被构造成当所述离合器构件处于所述接合位置时，所述第一下摇臂的接合突起用于所述第一和第二下摇臂的关节枢转运动;以及致动器，用于使所述离合器构件在所述接合位置之间轴向移动 位置和脱离位置。
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