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1. 发明公开

US20230203981A1 GAS EXCHANGE IN INTERNAL COMBUSTION ENGINES FOR INCREASED EFFICIENCY 审中-公开
公开(公告)号：US20230203981A1
公开(公告)日：2023-06-29
申请号：US17926931
申请日：2021-05-23
申请人： Lars Harald Heggen
发明人： Lars Harald Heggen
IPC分类号： F02B25/02 , F02B75/02 , F02D13/02 , F01L9/16 , F01L9/20
CPC分类号： F02B25/02 , F02B75/02 , F02D13/0242 , F01L9/16 , F01L9/20 , F02B2075/025 , F02B2075/027
摘要： The invention pertains to gas exchange in internal combustion engines using low to zero-emission fuels. The combustion engine has the ability to regulate the quantity of air/fuel mixture in the cylinder using one or more exhaust valve(s) (2) that can have adjustable opening times in order to control the gas exchange in the cylinder so that exhaust and alternatively also air can be expelled into the exhaust system. By reducing the quantity of air and thus the quantity of fuel for each cycle, that combined with reduced compression pressure means that engines can operate with a higher expansion ratio by leaving the exhaust valve(s) (2) open through a part of the compression stroke to reduce the amount of air to the combustion and reduce compression and then pressure rise before combustion. Air volume and gas exchange are regulated by compressor(s) (5) as well as opening and closing of exhaust valve(s) (2) with the exhaust valve control (4); alternatively, also intake valves for 4-stroke engines.

2. 发明申请

US20160169087A1 Air Leading Type Two-Stroke Engine And Intake System For Same, And Carburetor 有权
标题翻译：空气领先型二冲程发动机和进气系统相同，化油器
公开(公告)号：US20160169087A1
公开(公告)日：2016-06-16
申请号：US14961910
申请日：2015-12-08
申请人： Yamabiko Corporation
发明人： Takahiro Yamazaki , Hidekazu Tsunoda , Hisato Osawa , Tomoyoshi Kudo
IPC分类号： F02B25/20 , F02B25/02 , F02M19/06 , F02B75/02 , F02M35/10
CPC分类号： F02B25/20 , F02B25/02 , F02B25/14 , F02B75/02 , F02B2075/025 , F02M1/02 , F02M17/02 , F02M19/06 , F02M35/10275
摘要： An amount of air taken into an air leading type two-stroke engine is increased to enhance an engine output, and gas emission characteristic deterioration caused by blow-back is inhibited. An inhibition member 16 is disposed between a choke valve 4 in a full open position and a throttle valve 6 in a full open position. The inhibition member 16 includes, for example, a mesh member like a metal mesh. Mixed fuel containing oil is supplied to the air-fuel mixture channel 14. Numerous pores of the inhibition member 16 (mesh member) are occluded by a membrane of oil components of the mixed fuel. Consequently, entry of a blow-back flow of an air-fuel mixture from the air-fuel mixture channel 14 into the air channel 12 through the numerous pores of the flow inhibition member 16 (mesh member) can be inhibited.
摘要翻译：引入空气领先型二冲程发动机的空气量增加以增强发动机输出，并且抑制由回吹引起的气体排放特性劣化。禁止构件16设置在全开位置的节流阀4和处于完全打开位置的节流阀6之间。抑制构件16包括例如像金属网的网状构件。混合燃料的油被供应到空气 - 燃料混合物通道14中。禁止构件16（网孔构件）的许多孔被混合燃料的油组分的膜遮挡。因此，可以抑制空气 - 燃料混合物通道14的空气 - 燃料混合物的吹回流通过阻流构件16（网状构件）的多个孔进入空气通道12。

3. 发明授权

US09175598B2 Two-stroke engine, sand core for producing a two-stroke engine, and method for operating a two-stroke engine 有权
标题翻译：用于生产二冲程发动机的二冲程发动机，砂芯和用于操作二冲程发动机的方法
公开(公告)号：US09175598B2
公开(公告)日：2015-11-03
申请号：US12968298
申请日：2010-12-15
申请人： Werner Geyer , Jörg Schlossarczyk
发明人： Werner Geyer , Jörg Schlossarczyk
IPC分类号： F02B25/00 , F02B33/04 , B22C9/10 , F02B25/02 , F02B33/30 , F02F1/00 , F02F1/22 , F02B75/02
CPC分类号： F02B33/04 , B22C9/10 , F02B25/02 , F02B33/30 , F02B2075/025 , F02F1/002 , F02F1/22
摘要： A two-stroke engine has a cylinder with a combustion chamber and a reciprocating piston for driving a crankshaft. Transfer passages connect the crankcase in at least one position of the piston with the combustion chamber and open by piston-controlled transfer ports into the combustion chamber. An inlet opens into the crankcase and an outlet is provided at the combustion chamber. The engine is dividable into four sectors parallel to a longitudinal cylinder axis. The transfer port of a first transfer passage is arranged in the first sector, the outlet is arranged in the second sector, the transfer port of a second transfer passage is provided in the third sector, and the inlet is arranged in the fourth sector. Within the cylinder the first and second transfer passages, at a spacing from a separation plane between cylinder and crankcase, pass together into one of the second and fourth sectors.
摘要翻译：二冲程发动机具有带燃烧室的气缸和用于驱动曲轴的往复活塞。输送通道将曲轴箱在活塞的至少一个位置与燃烧室连接，并由活塞控制的输送口打开到燃烧室中。入口通向曲轴箱，在燃烧室设有出口。发动机可分为平行于纵向气缸轴线的四个扇区。第一传送通道的传送口设置在第一扇区中，出口布置在第二扇区中，第二传送通道的传送端口设置在第三扇区中，并且入口布置在第四扇区中。在气缸内，在与气缸和曲轴箱之间的分离平面的间隔处的第一和第二传送通道一起进入第二和第四扇区中的一个。

4. 发明申请

US20150260083A1 TWO-STROKE ENGINE 有权
标题翻译：两冲程发动机
公开(公告)号：US20150260083A1
公开(公告)日：2015-09-17
申请号：US14640674
申请日：2015-03-06
申请人： HONDA MOTOR CO., LTD.
发明人： Mashu Kurata , Toru Kawai
IPC分类号： F02B25/02 , F02B75/02
CPC分类号： F02B25/02 , F02B25/22 , F02B2075/025
摘要： A two-stroke engine includes: an intake passage that opens out to a crank chamber; a first one-way valve provided in the intake passage and permits a flow of fluid toward the crank chamber; a scavenging port having an upstream end communicating with the crank chamber and a downstream end that opens out in a wall defining a side portion of a cylinder, wherein the downstream end communicates with a combustion chamber defined above the piston at least when the piston is at a bottom dead center, and communicates with a part of the cylinder below the piston at least when the piston is at a top dead center; and an air supply passage that communicates a part of the intake passage which is located downstream of the first one-way valve with an upstream portion of the scavenging port so as to supply air to the scavenging port during air intake.
摘要翻译：二冲程发动机包括：向曲柄室打开的进气通道; 设置在进气通道中的第一单向阀，允许流体朝向曲柄室流动; 具有与曲柄室连通的上游端的清扫口和在限定气缸的侧部的壁上开口的下游端，其中，下游端至少在活塞处于活塞位置时与限定在活塞上方的燃烧室连通至少当活塞处于上止点时，与活塞下方的气缸的一部分连通; 以及将位于第一单向阀的下游侧的进气通路的一部分与扫气口的上游部分连通的空气供给通道，以在进气时向扫气口供给空气。

5. 发明申请

US20140238371A1 Two-Stroke Internal Combustion Engine 有权
标题翻译：二冲程内燃机
公开(公告)号：US20140238371A1
公开(公告)日：2014-08-28
申请号：US14185941
申请日：2014-02-21
申请人： Yamabiko Corporation
发明人： Takahiro Yamazaki , Shirou Yamaguchi , Ken Shirai , Masaru Nozawa
IPC分类号： F02B75/02
CPC分类号： F02B75/02 , F02B25/02 , F02B25/16 , F02B33/04 , F02B2075/025
摘要： The scavenging passage includes a wall surface that defines an orientation direction of a main scavenging gas flow spouting from the scavenging port to the cylinder chamber. In a boundary portion between the scavenging port and the scavenging passage, a wall surface located on an opposite side of the exhaust port is composed of an inclined surface inclined in a direction further away from the exhaust port than a wall surface of a deep portion of the scavenging passage. The scavenging port includes a rear wall surface located in a portion on the opposite side of the exhaust port. The rear wall surface continues to the inclined surface to extend in the direction away from the exhaust port and generates an incidental scavenging gas flow incidental to the main scavenging gas flow and higher in speed than the main scavenging gas flow.
摘要翻译：扫气通道包括壁表面，该壁表面限定从扫气口喷射到气缸室的主扫气流的取向方向。在扫气口与扫气通路之间的边界部分中，位于排气口相反侧的壁面由与排气口相反的方向倾斜的倾斜面，清扫通道。清扫口包括位于排气口的相对侧的一部分中的后壁表面。后壁表面继续向倾斜表面延伸，远离排气口的方向延伸，并产生附着在主扫气体流中的清除气流，并且速度高于主扫气流量。

6. 发明申请

US20140060507A1 ENGINE AND ENGINE-DRIVEN WORKING MACHINE 审中-公开
标题翻译：发动机和发动机驱动机床
公开(公告)号：US20140060507A1
公开(公告)日：2014-03-06
申请号：US14013406
申请日：2013-08-29
申请人： HITACHI KOKI CO., LTD.
发明人： Tatsuya HAGAWA , Shigetoshi ISHIDA
IPC分类号： F02B25/02
CPC分类号： F02B25/02 , F02B25/14 , F02B25/20 , F02B2075/025
摘要： An engine and an engine-driven working machine which enable blow-though prevention of an uncombusted air-fuel mixture and control of the number of times of combustion, stabilize operation during idling, and ensure output and acceleration performance during working are provided. A two-cycle engine having: a piston; a crankcase in which scavenging passages are formed; and a cylinder in which scavenging ports communicated with the scavenging passages and an exhaust port for discharging a combustion gas are formed. In the two-cycle engine, at least two or more systems of the scavenging passages having mutually different opening/closing systems are formed in the crankcase.
摘要翻译：提供一种发动机和发动机驱动的工作机械，其能够防止未燃空气燃料混合物的吹风，并且控制燃烧次数，稳定怠速期间的操作，并且确保加工期间的输出和加速性能。具有活塞的两冲程发动机形成清扫通道的曲轴箱; 以及形成有与清扫通路连通的清扫口和排出燃烧气体的排气口的气缸。在双冲程发动机中，在曲轴箱中形成有至少两个或更多个具有相互不同的打开/关闭系统的扫气通道系统。

7. 发明申请

US20130037011A1 Two-Stroke Internal Combustion Engine 有权
标题翻译：二冲程内燃机
公开(公告)号：US20130037011A1
公开(公告)日：2013-02-14
申请号：US13569239
申请日：2012-08-08
申请人： Takamasa Otsuji , Buhei Kobayashi
发明人： Takamasa Otsuji , Buhei Kobayashi
IPC分类号： F02B33/04
CPC分类号： F02B33/04 , F02B25/02 , F02B63/02 , F02F1/22
摘要： It is intended to effectively prevent blow-by with no need for large changes in typical structures of two-cycle internal combustion engines. A main scavenging passage (24) for supplying air-fuel mixture from a crankcase to a combustion chamber for scavenging purposes has a branch scavenging passage (26) that extends upward aslant toward an intake port (14). The main scavenging passage (24) communicates with a first scavenging port (20) located nearer to an exhaust port (16). The branch scavenging passage (26) communicates with a second scavenging port (22). A mean cross-sectional area of the branch scavenging passage (26) is smaller than that of the main scavenging passage (24). Cross-sectional area of a portion (24b) next to an inlet port (24a) of the main scavenging passage (24) opening to the crankcase is smaller than the sum of cross-sectional areas of the first and second scavenging ports (20, 22).
摘要翻译：旨在有效地防止窜气，而不需要两轮内燃机的典型结构的大的变化。用于将空气 - 燃料混合物从曲轴箱供应到用于清扫目的的燃烧室的主清扫通道（24）具有向吸入口（14）向上倾斜地延伸的分支扫气通道（26）。主清扫通道（24）与位于更靠近排气口（16）的第一扫气口（20）连通。分支清除通道（26）与第二扫气口（22）连通。分支清除通道（26）的平均横截面面积小于主清扫通道（24）的平均横截面面积。与通向曲轴箱的主扫气通道（24）的入口（24a）相邻的部分（24b）的横截面面积小于第一和第二扫气孔（20,28）的横截面面积的总和， 22）。

8. 发明申请

US20110146641A1 Internal Combustion Engine 审中-公开
标题翻译：内燃机
公开(公告)号：US20110146641A1
公开(公告)日：2011-06-23
申请号：US12968315
申请日：2010-12-15
申请人： Niels Kunert , Horst Denner
发明人： Niels Kunert , Horst Denner
IPC分类号： F02B25/00 , F02F1/00
CPC分类号： F02F1/002 , F02B25/02 , F02B63/02 , F02B2075/025 , F02F1/004 , F02F1/22
摘要： An internal combustion engine has a cylinder with cylinder liner and a reciprocatingly supported piston delimiting a combustion chamber and driving in rotation a crankshaft in a crankcase. A device for supplying fuel and combustion air is provided. At least one transfer passage connects in at least one piston position the crankcase interior with the combustion chamber. The transfer passage has a transfer port that opens into the combustion chamber and an opening that opens into the crankcase. Opening and transfer port are displaced relative to each other in circumferential direction of the cylinder. The cylinder liner has at least one segment of a piston bearing surface and forms at least one wall section of the transfer passage. The cylinder has an upper cylinder segment and a lower cylinder segment that are separately embodied. The cylinder liner is separate from the upper and lower cylinder segments.
摘要翻译：内燃机具有带气缸套的气缸和限定燃烧室的往复运动的活塞，并且使曲轴在曲轴箱中旋转。提供一种用于供应燃料和燃烧空气的装置。至少一个输送通道连接在曲轴箱内部与燃烧室的至少一个活塞位置上。传送通道具有通向燃烧室的传送口和通向曲轴箱的开口。打开和传送端口在圆筒的圆周方向上相对于彼此移位。气缸套具有活塞支承表面的至少一个段，并形成传送通道的至少一个壁部分。气缸具有分别实现的上气缸段和下气缸段。气缸套与上部和下部气缸段分离。

9. 发明申请

US20100288252A1 Non-Polluting Two-Stroke Engine with Air-Cooled Piston 有权
标题翻译：无污染二冲程发动机，风冷式活塞
公开(公告)号：US20100288252A1
公开(公告)日：2010-11-18
申请号：US11853162
申请日：2007-09-11
申请人： Marlon Moss
发明人： Marlon Moss
IPC分类号： F02B33/04
CPC分类号： F02B33/32 , F02B25/02 , F02B2075/025
摘要： A two-stroke internal combustion engine has at least one cylinder having a bore diameter, a central axis, a cylinder wall, and an upper and a lower extremity, a piston slip-fit in the cylinder, the piston having an overall height and a top surface, an upper portion and a lower portion each of approximately the bore diameter, each of the upper and lower portions having at least one seal ring between the piston and the cylinder wall, and a central portion of significantly less than the bore diameter and a height at least one-half of the overall piston height, providing an annular space between the central piston portion and the cylinder wall, a crank mechanism coupled to the piston in a manner providing a repeating stroke of a specific stroke length in the direction of the central axis of the cylinder, the repeating stroke providing a varying volume V between the top of the cylinder and the top surface of the piston, one or more exhaust ports through the cylinder wall, each exhaust port having a first height in the direction of the cylinder axis, centered at a first dimension from the top of the cylinder, one or more intake ports through the cylinder wall, each intake port having a second height in the direction of the cylinder axis, centered at a second dimension from the top of the cylinder, and a forced-air mechanism providing air to the one or more intake ports, wherein for a significant portion of every stroke both the one or more exhaust ports and the one or more intake ports are open to the annular space between the central piston portion and the cylinder wall, allowing the air pump to force air from the one or more intake ports around the central piston portion to the one or more exhaust ports.
摘要翻译：二冲程内燃机具有至少一个具有孔直径，中心轴线，气缸壁和上下端的气缸，活塞在气缸中滑动配合，活塞具有整体高度和顶表面，上部和下部，每个大致为孔直径，上部和下部中的每一个在活塞和气缸壁之间具有至少一个密封环，中心部分明显小于孔直径和整体活塞高度的至少一半的高度，在中心活塞部分和气缸壁之间提供环形空间;曲柄机构，其以一种提供特定行程长度的重复冲程的方式联接到活塞上，气缸的中心轴线，重复行程在气缸的顶部和活塞顶表面之间提供变化的体积V，通过气缸壁的一个或多个排气口，每个排气口在气缸轴线的方向上具有第一高度，以来自气缸顶部的第一尺寸为中心，通过气缸壁的一个或多个进气口，每个进气口在气缸轴线方向上具有第二高度，居中在距离气缸顶部的第二尺寸处，以及向一个或多个进气口提供空气的强制空气机构，其中对于每个冲程的大部分，一个或多个排气口和一个或多个进气口是通向中心活塞部分和气缸壁之间的环形空间，允许空气泵将来自围绕中心活塞部分的一个或多个进气口的空气强制到一个或多个排气口。

10. 发明授权

US07574985B2 Two-stroke internal combustion engine 失效
标题翻译：二冲程内燃机
公开(公告)号：US07574985B2
公开(公告)日：2009-08-18
申请号：US11658051
申请日：2005-07-08
申请人： Roland Kirchberger
发明人： Roland Kirchberger
IPC分类号： F02B25/00 , F02M69/10
CPC分类号： F02M69/044 , F02B25/02 , F02B2075/025 , F02B2075/125 , F02M69/045 , F02M69/10 , Y02T10/123
摘要： A two-stroke internal combustion engine with at least one cylinder (1), comprising a crankcase (2) flow-connected to the cylinder (1) by at least one transfer passage (3) and provided with an air intake manifold (4) and comprising an injection device for optional introduction of a fuel into the cylinder (1) or the crankcase (2) is described. To achieve fuel-air mixing adapted to the operating state of the engine it is proposed that the injection device comprises at least one injection nozzle (11) which is oriented toward the inlet region (12) of the transfer passage (3) issuing from the air intake manifold (4) and can be controlled as a function of the direction of movement of the piston (5) and the controller of the transfer passage (3).
摘要翻译：一种具有至少一个气缸（1）的二冲程内燃机，包括通过至少一个传送通道（3）流动连接到气缸（1）并设置有进气歧管（4）的曲轴箱（2）并且包括用于将燃料可选地引入气缸（1）或曲轴箱（2）中的注射装置。为了实现适合于发动机的运行状态的燃料 - 空气混合物，建议喷射装置包括至少一个喷射喷嘴（11），该喷嘴（11）朝向从所述喷射喷嘴（3）发出的传送通道（3）的入口区域（12）进气歧管（4），并且可以根据活塞（5）和输送通道（3）的控制器的运动方向来控制。

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