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公开(公告)号：US09903314B2
公开(公告)日：2018-02-27
申请号：US14715623
申请日：2015-05-19
申请人： Yamabiko Corporation
发明人： Shirou Yamaguchi , Takamasa Otsuji
IPC分类号： F02M17/12 , F02M35/10 , F02B17/00 , F02B25/02 , F02B25/16 , F02B25/20 , F02B25/22 , F02M11/02 , F02M19/00 , F02M35/108 , F02B63/02
CPC分类号： F02M17/12 , F02B17/00 , F02B25/02 , F02B25/16 , F02B25/20 , F02B25/22 , F02B63/02 , F02M11/02 , F02M19/00 , F02M35/1019 , F02M35/10196 , F02M35/10255 , F02M35/10262 , F02M35/108 , Y02T10/146
摘要： The present invention is to prevent mixing of fresh air and an air-fuel mixture when a throttle valve is fully opened and increase a delivery ratio. A main nozzle (30) is surrounded by a tunnel-like air flow guiding member (52). The air flow guiding member (52) is opened at its front and back sides. A whole amount of fuel discharged via a main nozzle (30) is sent to a downstream side by an air flow created by the air flow guiding member (52). When a throttle valve (22) and a choke valve (24) are both in a fully-opened state, fresh air flows into an air-fuel mixture passage (12) through a gap between these valves (22, 24).
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公开(公告)号：US09512806B2
公开(公告)日：2016-12-06
申请号：US14299760
申请日：2014-06-09
发明人： Gerhard Osburg
CPC分类号： F02M1/02 , F02B25/20 , F02M19/10 , F02M19/124
摘要： An internal combustion engine has a supply channel supplying combustion air. A throttle element is arranged in the supply channel and the position of the throttle element is adjustable by an operator-controlled element. The engine has a starter device which has an operating position and a starting position. In the starting position, the starter device opens up a defined flow cross section in the supply channel. The starter device locks in the starting position. The locking is released by actuation of the operator-controlled element. To achieve good starting performance of the engine, the engine has an intermediate stop which, upon the first actuation of the operator-controlled element after the release of the locking, is active and prevents the throttle element from opening fully, and which, during the subsequent closing movement of the throttle element, is deactivated such that the throttle element can be opened fully.
摘要翻译： 内燃机具有供给燃烧空气的供给通道。 节流元件布置在供应通道中，并且节流元件的位置由操作者控制的元件调节。 发动机具有起动装置，其具有操作位置和起始位置。 在起始位置，起动装置在供给通道中打开一个限定的流动截面。 起动装置锁定在起始位置。 通过操作者控制的元件的致动释放锁定。 为了实现发动机的良好启动性能，发动机具有中间止挡件，其在释放锁定之后在操作者控制元件的第一次致动时是有效的并且防止节流元件完全打开，并且在 节流元件的后续关闭运动被停用，使得节流元件可以完全打开。
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公开(公告)号：US20160177812A1
公开(公告)日：2016-06-23
申请号：US14906996
申请日：2014-07-21
CPC分类号： F02B25/22 , F02B25/04 , F02B25/20 , F02B75/02 , F02B2075/025
摘要： A method for controlling a two-stroke internal combustion engine, the control method including: a longitudinal movement of a piston in the direction of the bottom dead centre of an engine, the movement being triggered by the expansion of burned gases in the master cylinder, during the longitudinal movement of the piston, the process includes a step of intake air pressurisation, adjustment of the pressure of the burned gases to a value lower than the intake air pressure, introduction into the cylinder of pressurised intake air, the air introduced forming a stratification layer redirecting the burned gases in the direction of the exhaust port.
摘要翻译： 一种用于控制二冲程内燃机的方法，所述控制方法包括：活塞沿着发动机的下止点的方向的纵向运动，所述运动由主缸中的燃烧气体的膨胀触发， 在活塞的纵向移动期间，该过程包括进气加压，将燃烧气体的压力调节到低于进气压力的值的步骤，引入加压进气的气缸中，导入的空气形成 分层将排气口方向的燃烧气体重新定位。
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公开(公告)号：US20150337764A1
公开(公告)日：2015-11-26
申请号：US14715623
申请日：2015-05-19
申请人： Yamabiko Corporation
发明人： Shirou Yamaguchi , Takamasa Otsuji
CPC分类号： F02M17/12 , F02B17/00 , F02B25/02 , F02B25/16 , F02B25/20 , F02B25/22 , F02B63/02 , F02M11/02 , F02M19/00 , F02M35/1019 , F02M35/10196 , F02M35/10255 , F02M35/10262 , F02M35/108 , Y02T10/146
摘要： The present invention is to prevent mixing of fresh air and an air-fuel mixture when a throttle valve is fully opened and increase a delivery ratio. A main nozzle (30) is surrounded by a tunnel-like air flow guiding member (52). The air flow guiding member (52) is opened at its front and back sides. A whole amount of fuel discharged via a main nozzle (30) is sent to a downstream side by an air flow created by the air flow guiding member (52). When a throttle valve (22) and a choke valve (24) are both in a fully-opened state, fresh air flows into an air-fuel mixture passage (12) through a gap between these valves (22, 24).
摘要翻译： 本发明是为了在节流阀完全打开时防止新鲜空气和空气 - 燃料混合物的混合，并增加输送比。 主喷嘴（30）被隧道状气流引导构件（52）包围。 气流引导构件（52）在其前侧和后侧开口。 通过主喷嘴（30）排出的全部燃料通过由气流引导构件（52）产生的空气流被送到下游侧。 当节流阀（22）和阻风门（24）都处于完全打开状态时，新鲜空气通过这些阀（22,24）之间的间隙流入空气 - 燃料混合物通道（12）。
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公开(公告)号：US20150260082A1
公开(公告)日：2015-09-17
申请号：US14640644
申请日：2015-03-06
发明人： Mashu Kurata , Toru Kawai
IPC分类号： F02B25/02
摘要： A uniflow two-stroke engine, includes: a cylinder receiving a piston such that the piston can reciprocate therein; an exhaust port provided in an upper end part of the cylinder; and a scavenging port that is provided in a lower side wall portion of the cylinder so as to be opened and closed by the piston, wherein a downstream portion of the scavenging port that opens out to the cylinder includes a guide member that gives a downward velocity component to a gas flow entering the cylinder from the scavenging port.
摘要翻译： 单流二冲程发动机包括：容纳活塞的气缸，使得活塞能够在其中往复运动; 设置在所述气缸的上端部的排气口; 以及清扫口，其设置在所述气缸的下侧壁部分中，以便由所述活塞打开和关闭，其中所述扫气口的向所述气缸打开的下游部分包括引导构件，所述引导构件提供向下的速度 从清扫口进入气瓶的气流。
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公开(公告)号：US08967099B2
公开(公告)日：2015-03-03
申请号：US13327020
申请日：2011-12-15
申请人： Michael Grether , Niels Kunert , Tommy Roitsch , Klaus Geyer
发明人： Michael Grether , Niels Kunert , Tommy Roitsch , Klaus Geyer
IPC分类号： F02B25/00 , F02B25/20 , F02M3/14 , F02M35/10 , F02B25/14 , F02M3/08 , F02M29/04 , F02M33/04 , F02B75/02 , F02B33/04 , E02D7/12 , F02B61/04 , F02F1/22
CPC分类号： F02B25/20 , E02D7/125 , F02B25/14 , F02B33/04 , F02B61/045 , F02B2075/025 , F02F1/22 , F02M3/08 , F02M3/14 , F02M29/04 , F02M33/046 , F02M35/10321 , Y02T10/126
摘要： A two stroke engine comprises a cylinder, in which a combustion chamber bounded by a piston is formed, and an intake passage. A carburetor forms a section of the intake passage, within which a throttle element is mounted pivotably, and at least one main fuel opening and at least one idling fuel opening open into the intake passage, which is divided downstream of the carburetor into an air passage and a mixture passage. The idling fuel opening feeds a secondary passage arranged within the mixture passage. In the idling position, the throttle element may be arranged adjacent to the upstream entry opening in the secondary passage, and the throttle element may have an opening which, in the idling position of the throttle element, is arranged in the region of the entry opening and connects the secondary passage to that region of the intake passage located upstream of the throttle element.
摘要翻译： 二冲程发动机包括形成有由活塞界定的燃烧室的气缸和进气通道。 化油器形成进气通道的一部分，其中节流元件可枢转地安装在其中，并且至少一个主燃料开口和至少一个空转燃料开口通向进气通道，该进气通道在化油器的下游分配成空气通道 和混合物通道。 空转燃料开口供给布置在混合通道内的次级通道。 在怠速位置，节气门元件可以布置成与次级通道中的上游入口相邻，并且节流元件可以具有在节流元件的空转位置处布置在入口开口的区域中的开口 并且将次级通道连接到位于节流元件上游的进气通道的区域。
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公开(公告)号：US20130291840A1
公开(公告)日：2013-11-07
申请号：US13980428
申请日：2011-02-03
申请人： Ryou Ono , Mikihiro Asahina
发明人： Ryou Ono , Mikihiro Asahina
IPC分类号： F02B33/00
摘要： A stratified scavenging two-stroke engine includes: a crankcase (2); a cylinder (3) being provided with a cylinder bore (31); an intake passage (4) supplying air-fuel mixture into the crankcase (2) via an intake port (4A); a scavenging passage (5) supplying the air-fuel mixture from the crankcase (2) into the cylinder bore (31) via a scavenging port (5A); a leading-air passage (6) supplying leading air into the scavenging passage (5); and an exhaust passage (7) being disposed on an opposite side of the intake passage (4) with the cylinder bore (31) interposed therebetween, the exhaust passage (7) discharging exhaust gas via an exhaust port, in which the scavenging passage (5) includes a main passage (51) provided near the exhaust port and a sub passage (52) provided near the intake port (4A), the main passage (51) and the sub passage (52) are isolated from each other by a partition (25, 34) that extends over substantially an entire length of the main passage (51) and the sub passage (52), the sub passage (52) includes an air-fuel mixture inlet (55) provided at a position corresponding to an opening end (35) of the cylinder bore (31) that faces the crankcase (2), and the inlet (55) functions as a flow rate adjuster having a throttle effect.
摘要翻译： 分层扫气二冲程发动机包括：曲轴箱（2）; 气缸（3）设置有气缸孔（31）; 进气通道（4），经由进气口（4A）将空气 - 燃料混合物供应到所述曲轴箱（2）中; 清空通道（5），其经由清扫口（5A）将空气 - 燃料混合物从曲轴箱（2）供应到气缸孔（31）中; 将引导空气供给到扫气通道（5）中的引导空气通道（6）; 和排气通路（7），其设置在所述进气通路（4）的与所述气缸孔（31）相对的相反侧，所述排气通道（7）经由排气口排出废气，所述排气通道 5）包括设置在排气口附近的主通道（51）和设置在进气口（4A）附近的副通道（52），主通道（51）和副通道（52）通过一个 分隔壁（25,34），其在主通道（51）和副通道（52）的基本上整个长度上延伸，副通道（52）包括空气 - 燃料混合物入口（55），设置在对应于 所述气缸孔（31）的面向曲轴箱（2）的开口端（35），并且所述入口（55）用作具有节流效应的流量调节器。
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8.发明申请公开(公告)号：US20130255652A1
公开(公告)日：2013-10-03
申请号：US13852388
申请日：2013-03-28
申请人： MAKITA CORPORATION
IPC分类号： F02B29/00
摘要： To create an internal combustion engine including a crankcase and a cylinder, wherein a piston is guided in the cylinder to perform a stroke movement and movably defines a combustion chamber, and wherein at least one transfer channel, through which ignition mixture is guided from the crankcase into the combustion chamber, is arranged in the cylinder, which leads to a further improvement of the exhaust gas quality and/or of the fuel consumption, in particular for creating an improved metering of ignition mixture into the fuel chamber, it is proposed for the piston to encompass a lower piston edge, which interacts with at least one counter body such that an inlet cross section of the transfer channel for the inflow of the ignition mixture from the crankcase into the transfer channel can be controlled by the stroke movement of the piston by the lower piston edge.
摘要翻译： 为了产生包括曲轴箱和气缸的内燃机，其中活塞在气缸中被引导以执行冲程运动并且可移动地限定燃烧室，并且其中至少一个输送通道使得点火混合物从曲轴箱 进入燃烧室，设置在气缸中，这导致废气质量和/或燃料消耗的进一步改善，特别是为了产生改进的点燃混合物计量到燃料室中，建议为 活塞以包围下活塞边缘，其与至少一个相对体相互作用，使得用于将点火混合物从曲轴箱流入输送通道的输送通道的入口横截面可以通过活塞的行程运动来控制 通过下活塞边缘。
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公开(公告)号：US20130228159A1
公开(公告)日：2013-09-05
申请号：US13423074
申请日：2012-03-16
IPC分类号： F02B29/00
CPC分类号： F02B25/20 , F02M35/1019 , F02M35/108
摘要： A two-stroke engine has an intake arrangement including a carburetor. An intake channel divides into a mixture channel and an air channel. An intermediate flange is mounted between the carburetor and the cylinder. This flange has a carburetor connecting surface, which faces toward the carburetor, and a cylinder connecting surface which faces toward the cylinder. Referred to the flow direction in the intake channel, the air channel divides upstream of the cylinder connecting surface into two branches. The first branch has a first longitudinal center axis and the second branch has a second longitudinal center axis. The intersect points of the center axes with the connecting surfaces are mutually connected via an imaginary connecting line in the carburetor connecting surface or the cylinder connecting surface. The two connecting lines conjointly define an angle β in the carburetor connecting surface with this angle being greater than 0°.
摘要翻译： 二冲程发动机具有包括化油器的进气装置。 进气通道分为混合通道和空气通道。 中间法兰安装在化油器和气缸之间。 该法兰具有朝向化油器的化油器连接表面和朝向气缸的气缸连接表面。 参考进气通道中的流动方向，空气通道将气缸连接表面的上游分为两个分支。 第一分支具有第一纵向中心轴线，第二分支具有第二纵向中心轴线。 中心轴与连接面的交点经由化油器连接面或气缸连接面的假想连接线相互连接。 两个连接线在化油器连接表面中共同定义角度β，该角度大于0°。
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公开(公告)号：US08172038B2
公开(公告)日：2012-05-08
申请号：US12422786
申请日：2009-04-13
申请人： Christian Kellermann
发明人： Christian Kellermann
IPC分类号： F01N13/10
CPC分类号： F01N1/089 , F01N2260/14 , F01N2490/04 , F01N2490/16 , F01N2590/04 , F01N2590/06 , F02B25/20 , F02B27/04 , Y02T10/146
摘要： A silencer for a two-stroke engine includes a first chamber and a second chamber, wherein a flow channel is provided between an outlet of a combustion chamber and the first chamber. A high charge degree of the combustion chamber has a pressure ratio in the region of the outlet which reduces or prevents an escape of fresh gas from the combustion chamber. The flow channel between the outlet and the first chamber is flow-favorably shaped in such a manner that the exhaust gas that flows out of the outlet because of its mass inertia predominantly flows into the first chamber and following charging of the first chamber flows back again and as a result a back pressure is formed in the direction of the combustion chamber.
摘要翻译： 用于二冲程发动机的消音器包括第一室和第二室，其中在燃烧室的出口和第一室之间设置有流动通道。 燃烧室的高充电度具有在出口区域中的压力比，其减少或防止新鲜气体从燃烧室逸出。 出口和第一室之间的流动通道以这样一种流动方式成形，使得由于其质量惯性而流出出口的废气主要流入第一室并且在第一室的充电之后再次流回 结果，在燃烧室的方向上形成背压。
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