公开(公告)号：US08869774B2

公开(公告)日：2014-10-28

申请号：US13155294

申请日：2011-06-07

Applicant: Toshihide Sasaki ,  Shigetoshi Ishida ,  Hiroki Nagase

Inventor： Toshihide Sasaki ,  Shigetoshi Ishida ,  Hiroki Nagase

IPC: F02D11/10 ,  F02M35/10 ,  F02B27/00 ,  F02D35/00 ,  F02B63/02 ,  F02B75/02

CPC classification number: F02M35/10275 ,  F02B27/003 ,  F02B63/02 ,  F02B2075/025 ,  F02D11/10 ,  F02D35/0053 ,  F02D2400/04 ,  F02D2400/06 ,  Y02T10/146

Abstract: An engine includes: a carburetor configured to supply an air-fuel mixture of fuel and air; a crank case defining a crank chamber; a cylinder block which includes: a cylinder bore in which a reciprocable piston is disposed; and an intake port which supplies the air-fuel mixture supplied from the carburetor to the crank chamber; a control valve configured to open and close the intake port; and a controller configured to control the control valve. The controller controls the number of times that the control valve closes the intake port with respect to the number of times that the piston moves up to thereby reduce pressure of the crank chamber.

Abstract translation: 发动机包括：化油器，其构造成供应燃料和空气的空气燃料混合物; 限定曲柄室的曲轴箱; 气缸体，其包括：气缸孔，其中布置有往复活塞; 以及将从所述化油器供给的所述空气燃料混合物供给到所述曲柄室的进气口; 构造成打开和关闭进气口的控制阀; 以及配置成控制所述控制阀的控制器。 控制器控制控制阀相对于活塞向上移动的次数关闭进气口的次数，从而减小曲柄室的压力。

公开(公告)号：US20100037877A1

公开(公告)日：2010-02-18

申请号：US12540295

申请日：2009-08-12

Applicant: Toshinori YASUTOMI ,  Shinki Ohtsu ,  Junichi Kamimura ,  Shigetoshi Ishida

Inventor： Toshinori YASUTOMI ,  Shinki Ohtsu ,  Junichi Kamimura ,  Shigetoshi Ishida

IPC: F02B33/04

CPC classification number: F02B63/02 ,  F02B25/04 ,  F02B2075/025 ,  F02F3/24 ,  F02M26/37 ,  F02M35/1017 ,  F02M35/1019 ,  Y02T10/146

Abstract: The invention provides a two cycle engine which effectively suppresses an intrusion of a combustion gas into a crank chamber. Further, the invention provides a two cycle engine tool provided with the two cycle engine mentioned above. An engine is provided with a cylinder having two scavenge air ports at different positions in a cylinder circumference direction, and scavenge air inflow ports communicating individually with these two scavenge air ports via a scavenge air passage, and a piston in which two scavenge air communication ports are formed at positions corresponding to the scavenge air inflow ports, and is structured to swirl the gas flowing into the piston from the cylinder through the scavenge air passage, in an upper portion of the internal space of the piston, and retains the gas in the upper portion of the internal space of the piston.

Abstract translation: 本发明提供了一种有效地抑制燃烧气体进入曲柄室的双循环发动机。 此外，本发明提供了一种具有上述两循环发动机的双循环发动机工具。 发动机设置有在气缸圆周方向上的不同位置具有两个清除空气端口的气缸，以及通过扫气通道与这两个扫气口单独连通的清扫空气流入口，以及活塞，其中两个扫气通气口 形成在与清扫空气流入口相对应的位置处，并且被构造成在活塞的内部空间的上部中使从气缸流过活塞的气体通过扫气通道旋转，并将气体保持在 活塞内部空间的上部。

公开(公告)号：US20100012106A1

公开(公告)日：2010-01-21

申请号：US12300560

申请日：2007-05-10

Applicant: Shigetoshi Ishida

Inventor： Shigetoshi Ishida

IPC: F02B33/04

CPC classification number: F02B25/16 ,  F02B25/22 ,  F02B2075/025 ,  F02F1/22 ,  F02F3/24

Abstract: Provided is a laminar-scavenging two-cycle engine, which can have a higher laminar-scavenging effect than that of the laminar-scavenging two-cycle engine of the prior art and which can expect drastically excellent effects on the stabilization of combustion and on the blow-by prevention. The laminar-scavenging two-cycle engine is characterized in that a scavenging passage (4) is constituted to include a portion (or a crankcase side portion (4a)) extending along a crankcase (9) and a portion (or a cylinder side portion (4b)) extending along a cylinder (10) and to have a length larger than the sum of the diameter and stroke of the cylinder (10), in that an ambient air introducing passage (11) for introducing the leading air into the scavenging passage (4) is connected to an intermediate portion of the scavenging passage (4), and in that a notch (8a) for opening a scavenging port (7) to the side of the crankcase (9) when a piston (8) is near the top dead center is formed in the piston (8).

Abstract translation: 提供了一种层流清扫双循环发动机，其能够具有比现有技术的层流清扫双循环发动机更高的层流清除效果，并且可以预期对燃烧稳定性的显着优异的影响 窜漏预防。 层状扫气二冲程发动机的特征在于，扫气通道（4）构成为包括沿曲轴箱（9）延伸的部分（或曲轴箱侧部分（4a））和一部分（或气缸侧部分 （4b）），其长度大于所述气缸（10）的直径和冲程的总和，其特征在于，所述环境空气引入通道（11）用于将引导空气引入所述清扫 通道（4）连接到扫气通道（4）的中间部分，并且当活塞（8）为活塞（8）时，用于将扫气口（7）打开到曲轴箱（9）侧的切口（8a） 在活塞（8）上形成靠近上止点的位置。

公开(公告)号：US4914372A

公开(公告)日：1990-04-03

申请号：US247043

申请日：1988-09-20

Applicant: Shigetoshi Ishida

Inventor： Shigetoshi Ishida

IPC: F02P1/08 ,  F02P3/00

CPC classification number: F02P1/083 ,  F02P3/005

Abstract: A small engine suitable for hand-held work machines such as cleavers and chain-saws in which the engine is started by driving a self-starting motor with the electromotive force of a secondary battery and wherein the size and weight of the engine is reduced by eliminating the use of a generator since the secondary battery is charged by utilizing the electromotive force of a magnet in reverse direction that is not normally used for igniting the engine.

公开(公告)号：US20120260900A1

公开(公告)日：2012-10-18

申请号：US13453470

申请日：2012-04-23

Applicant: Shigetoshi ISHIDA

Inventor： Shigetoshi ISHIDA

IPC: F02B25/00

CPC classification number: F02B25/16 ,  F02B25/22 ,  F02B2075/025 ,  F02F1/22 ,  F02F3/24

Abstract: A laminar-scavenging two-cycle engine which has a high laminar-scavenging effect, includes a scavenging passage having a crankcase side portion extending along a crankcase, and a cylinder side portion extending along a cylinder and having a length larger than the sum of the diameter and stroke of the cylinder. An ambient air introducing passage for introducing leading air into the scavenging passage is connected to an intermediate portion of the scavenging passage. A notch for opening a scavenging port to the side of the crankcase when a piston is near the top dead center is formed in the piston.

Abstract translation: 具有高层流扫除效果的层状清扫双循环发动机包括具有沿着曲轴箱延伸的曲轴箱侧部分的扫气通道和沿气缸延伸的长度大于气缸长度的总和的气缸侧部分 气缸的直径和行程。 用于将引导空气引入扫气通道的环境空气引入通道连接到扫气通道的中间部分。 当活塞靠近上止点时，用于将清扫口打开到曲轴箱侧的切口形成在活塞中。

公开(公告)号：US08181611B2

公开(公告)日：2012-05-22

申请号：US12300560

申请日：2007-05-10

Applicant: Shigetoshi Ishida

Inventor： Shigetoshi Ishida

IPC: F02B25/00

CPC classification number: F02B25/16 ,  F02B25/22 ,  F02B2075/025 ,  F02F1/22 ,  F02F3/24

Abstract: Provided is a laminar-scavenging two-cycle engine, which can have a higher laminar-scavenging effect than that of the laminar-scavenging two-cycle engine of the prior art and which can expect drastically excellent effects on the stabilization of combustion and on the blow-by prevention. The laminar-scavenging two-cycle engine is characterized in that a scavenging passage (4) is constituted to include a portion (or a crankcase side portion (4a)) extending along a crankcase (9) and a portion (or a cylinder side portion (4b)) extending along a cylinder (10) and to have a length larger than the sum of the diameter and stroke of the cylinder (10), in that an ambient air introducing passage (11) for introducing the leading air into the scavenging passage (4) is connected to an intermediate portion of the scavenging passage (4), and in that a notch (8a) for opening a scavenging port (7) to the side of the crankcase (9) when a piston (8) is near the top dead center is formed in the piston (8).

Abstract translation: 提供了一种层流清扫双循环发动机，其能够具有比现有技术的层流清扫双循环发动机更高的层流清除效果，并且可以预期对燃烧稳定性的显着优异的影响 窜漏预防。 层状扫气二冲程发动机的特征在于，扫气通道（4）构成为包括沿曲轴箱（9）延伸的部分（或曲轴箱侧部分（4a））和一部分（或气缸侧部分 （4b）），其长度大于所述气缸（10）的直径和冲程的总和，其特征在于，所述环境空气引入通道（11）用于将引导空气引入所述清扫 通道（4）连接到扫气通道（4）的中间部分，并且当活塞（8）为活塞（8）时，用于将扫气口（7）打开到曲轴箱（9）侧的切口（8a） 在活塞（8）上形成靠近上止点的位置。

公开(公告)号：US20100059030A1

公开(公告)日：2010-03-11

申请号：US12309054

申请日：2007-06-21

Applicant: Shigetoshi Ishida

Inventor： Shigetoshi Ishida

IPC: F02B33/04

CPC classification number: F02B33/04 ,  F02B25/14 ,  F02B25/22 ,  F02B2075/025 ,  F02F1/22 ,  F02F3/24 ,  F02M35/1019 ,  F02M35/108

Abstract: A stratified scavenging two-cycle engine that has a simpler structure than conventional stratified scavenging two-cycle engines and that has an excellent blow-by prevention effect etc. In an air intake stroke, lead air passes a lead-air port (12) etc. to flow into an inner space of a piston (6) during a period from the instant at which a lateral groove (21b) starts to superpose on the lead-air port (12) until the superposing between the lateral groove (21b) and the lead-air port (12) disappears after the piston (6) passes its top dead center. Further, in a scavenging stroke, lead air passes a scavenging path (17) etc. to flow into a cylinder (4) from a scavenging port (18) during a period from the instant at which a scavenging connection opening (20) and a scavenging inflow opening (19) start to superpose on each other until the superposing between the scavenging connection opening (20) and the scavenging inflow opening (19) disappears after the piston (6) passes its bottom dead center. Then, a mixture gas passes the inside of the piston (6) to flow into the cylinder (4) from the scavenging port (18).

Abstract translation: 一种分层清扫双循环发动机，结构比传统分层清扫双循环发动机结构更简单，具有良好的防漏效果。在进气冲程中，引导空气通过引气口（12）等 在从横向槽（21b）开始叠加在引入空气端口（12）上的时刻的期间，流入活塞（6）的内部空间，直到横向槽（21b）和 活塞（6）通过其上死点后，引导空气端口（12）消失。 此外，在清扫行程中，在从扫气连接口（20）和清扫口（20）的时刻起，引导空气通过扫气路（17）等从扫气口（18）流入气缸（4） 清扫流入口（19）开始彼此重叠，直到在活塞（6）通过其下死点之后，扫气连接开口（20）和扫气流入口（19）之间的叠加消失。 然后，混合气体从活塞（6）的内部通过从扫气口（18）流入气缸（4）。

公开(公告)号：US08813733B2

公开(公告)日：2014-08-26

申请号：US12636451

申请日：2009-12-11

Applicant: Fukushi Tamura ,  Shigetoshi Ishida

Inventor： Fukushi Tamura ,  Shigetoshi Ishida

IPC: F02P11/00 ,  F02P9/00

CPC classification number: A01G3/053 ,  A01G3/047 ,  B25F5/02 ,  B27B17/0008

Abstract: When throttle lever is pulled with the rotation lock member of the engine-powered tool in a state in which rotation of rear handle is permitted, the electrode terminal provided on the rotation lock member and the electrode terminal provided on throttle lever contact each other. As a result of this contact, the two output terminals of the engine generator are short-circuited, the supply of electric power to the ignition device from the engine generator is stopped and the supply of electric power from the ignition device to sparkplug in the engine is stopped. Through this, operation of the blade is prevented when rotating rear handle.

Abstract translation: 当在允许后手柄的旋转的状态下用发动机动力工具的旋转锁定构件拉动节流杆时，设置在旋转锁定构件上的电极端子和设置在节流杆上的电极端子彼此接触。 作为这种接触的结果，发动机发电机的两个输出端子短路，停止从发动机发电机向点火装置的电力供应，并且从点火装置向发动机的火花塞供电 被停止 通过这样，当旋转后把手时，防止了叶片的操作。

公开(公告)号：US08499730B2

公开(公告)日：2013-08-06

申请号：US12540295

申请日：2009-08-12

Applicant: Toshinori Yasutomi ,  Shinki Ohtsu ,  Junichi Kamimura ,  Shigetoshi Ishida

Inventor： Toshinori Yasutomi ,  Shinki Ohtsu ,  Junichi Kamimura ,  Shigetoshi Ishida

IPC: F02B25/00

CPC classification number: F02B63/02 ,  F02B25/04 ,  F02B2075/025 ,  F02F3/24 ,  F02M26/37 ,  F02M35/1017 ,  F02M35/1019 ,  Y02T10/146

Abstract: The invention provides a two cycle engine which effectively suppresses an intrusion of a combustion gas into a crank chamber. Further, the invention provides a two cycle engine tool provided with the two cycle engine mentioned above. An engine is provided with a cylinder having two scavenge air ports at different positions in a cylinder circumference direction, and scavenge air inflow ports communicating individually with these two scavenge air ports via a scavenge air passage, and a piston in which two scavenge air communication ports are formed at positions corresponding to the scavenge air inflow ports, and is structured to swirl the gas flowing into the piston from the cylinder through the scavenge air passage, in an upper portion of the internal space of the piston, and retains the gas in the upper portion of the internal space of the piston.

Abstract translation: 本发明提供了一种有效地抑制燃烧气体进入曲柄室的双循环发动机。 此外，本发明提供了一种具有上述两循环发动机的双循环发动机工具。 发动机设置有在气缸圆周方向上的不同位置具有两个清除空气端口的气缸，以及通过扫气通道与这两个扫气口单独连通的清扫空气流入口，以及活塞，其中两个扫气通气口 形成在与清扫空气流入口相对应的位置处，并且被构造成在活塞的内部空间的上部中使从气缸流过活塞的气体通过扫气通道旋转，并将气体保持在 活塞内部空间的上部。

公开(公告)号：US06279521B1

公开(公告)日：2001-08-28

申请号：US09459021

申请日：1999-12-10

Applicant: Shigetoshi Ishida ,  Naoki Tsuruoka ,  Yasuhiro Sensui

Inventor： Shigetoshi Ishida ,  Naoki Tsuruoka ,  Yasuhiro Sensui

IPC: F02B3300

CPC classification number: F02B25/14

Abstract: A two-cycle engine includes scavenging passages on the cylinder side and the crankcase side as the passages to supply scavenging gas into the cylinder. The passage on the cylinder side includes a passage inside the cylinder sidewall having substantially the same inner diameter as that of the opening area of the scavenging charge port, while the passage on the crankcase side includes a space between the inner peripheral surface at the top end of the crankcase and the outer peripheral surface of the piston, and a connection means provided between the top end of the space and the lower end of the scavenger passage of the cylinder. As the fuel mixture in the crank chamber flows into the scavenging passage on the cylinder side through the narrow space of the passage on the crankcase side and the connection means, the rapid inflow of the fuel mixture into the cylinder is restrained and the supply of the fuel mixture is sustained constantly high until the latter half of the scavenging time. This enables an optimum supply of fuel mixture, and radically decreases the amount of unburned gas in the fuel mixture that is emitted with the exhaust gas.

Abstract translation: 双冲程发动机包括在气缸侧和曲轴箱侧的扫气通道作为将清扫气体供入气缸的通道。 气缸侧的通道包括在气缸侧壁内部具有与清扫装料口的开口面积大致相同的内径的通道，而曲轴箱侧的通道包括在顶端的内周面之间的空间 和连接装置，其设置在所述空间的顶端与所述气缸的所述清扫通道的下端之间。 由于曲轴室中的燃料混合物通过曲轴箱侧的通道的狭窄空间和连接装置流入气缸侧的扫气通道，所以抑制了燃料混合物进入气缸的快速流入， 燃料混合物持续不断高达到后半部分的清除时间。 这使得能够最佳地供应燃料混合物，并且从根本上减少与废气一起排出的燃料混合物中的未燃烧气体的量。