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1. 发明授权

US07146942B2 Two-cycle combustion engine with air scavenging system having pressure reducing device 有权
公开(公告)号：US07146942B2
公开(公告)日：2006-12-12
申请号：US11171881
申请日：2005-06-30
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F02B25/00
CPC分类号： F02M35/1019 , F02B25/22 , F02M35/1017
摘要： To provide an improved air scavenging type two-cycle combustion engine equipped with a pressure reducing device in which clogging of a decompressing hole can easily be removed, a two-cycle combustion engine includes a delivery passage (32) for introducing air into a combustion chamber (9) prior to an air-fuel mixture. This delivery passage (32) has a downstream opening (32c) through which the air is introduced into the combustion chamber by way of a scavenging port (40a). A decompressing hole (38) is defined for communicating the combustion chamber (9) to a portion of the delivery passage (32) and is closed by a piston (16) then ascending, at a timing delayed relative to closure of an exhaust port (31).

2. 发明授权

US07089891B2 Two-cycle combustion engine 有权
标题翻译：双循环内燃机
公开(公告)号：US07089891B2
公开(公告)日：2006-08-15
申请号：US10862667
申请日：2004-06-07
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F02B33/04
CPC分类号： F02B33/04 , F02B25/16 , F02B25/20 , F02B33/30
摘要： To provide a two-cycle combustion engine, in which the blow-off of the air-fuel mixture used as the scavenging gas is avoided and the combustion efficiency of the air-fuel mixture can be increased, the two-cycle combustion engine includes first and second scavenge passages (11, 12) for supplying the air-fuel mixture (M) from a crank chamber (2a) into the combustion chamber (1a) of the combustion engine. Each of the first and second scavenge passages (11, 12) has a lower end portion thereof extended to assume the position where it confronts an outer end face of a bearing (81) for the crankshaft (8), so that the air-fuel mixture (M) within the crank chamber (2a) can be introduced into the first and second scavenge passages (11, 12) through the bearing (81) and be then supplied into the combustion chamber (1a) through the first and second scavenge passages (11, 12).
摘要翻译：为了提供避免用作清扫气体的空气 - 燃料混合物的吹扫的双循环内燃机，并且可以提高空气 - 燃料混合物的燃烧效率，所以双循环内燃机包括第一以及用于将空气燃料混合物（M）从曲柄室（2a）供应到内燃机的燃烧室（1a）中的第二扫气通道（11,12）。第一和第二清扫通道（11,12）中的每一个具有下端部，其延伸以呈现其与用于曲轴（8）的轴承（81）的外端面相对的位置，使得空气燃料曲柄室（2a）内的混合物（M）可以通过轴承（81）被引入到第一和第二扫气通道（11,12）中，然后通过第一和第二扫气通道（11,12）。

3. 发明授权

US07077078B2 Engine cooling structure 有权
标题翻译：发动机冷却结构
公开(公告)号：US07077078B2
公开(公告)日：2006-07-18
申请号：US10941880
申请日：2004-09-16
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F01P1/02
CPC分类号： F02B63/02 , F01P1/02 , F01P5/06 , F01P2060/16 , F02B75/16
摘要： In an engine cooling structure, an engine cover defines together with a cylinder a space connected through a cooling air inlet to a cooling air supply device. An exhaust muffler has an exhaust gas discharge opening formed near a back end part of a side, which is opposite to a side facing the cylinder, of the exhaust muffler. The opening is positioned at a height included in a vertical dimension of the cylinder. A cooling air passage, through which a cooling air taken in the space defined by the engine cover and the cylinder through the cooling air inlet flows, is formed so as to cool the cylinder and the exhaust muffler. The cooling air passage includes a main cooling passage for guiding part of cooling air used for cooling the cylinder through a space around the exhaust muffler to a space around the opening, and a cooling air bypass passage for guiding part of cooling air used for cooling the cylinder directly to the space around the opening.
摘要翻译：在发动机冷却结构中，发动机盖与气缸一起限定通过冷却空气入口连接到冷却空气供应装置的空间。排气消声器具有在排气消声器的与面向气缸的一侧相反侧的后端部附近形成的排气排出口。开口位于包括在气缸的垂直尺寸中的高度处。冷却空气通道形成为冷却气缸和排气消声器，通过该冷却空气通道被吸入由发动机盖和气缸限定的空间中的冷却空气通过冷却空气入口流动。冷却空气通道包括主冷却通道，用于将用于冷却气缸的冷却空气的一部分引导通过排气消声器周围的空间到开口周围的空间，以及冷却空气旁通通道，用于引导冷却用的冷却空气的一部分缸直接连接到开口周围的空间。

4. 发明申请

US20050155563A1 Two-cycle combustion engine 有权
标题翻译：双循环内燃机
公开(公告)号：US20050155563A1
公开(公告)日：2005-07-21
申请号：US11033660
申请日：2005-01-11
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F02B33/04 , F02B25/14 , F02B25/16 , F02B25/20 , F02B25/00
CPC分类号： F02B25/20 , F02B25/14
摘要： To provide a two-cycle combustion engine of a simplified structure with the number of component parts reduced, which is effective to suppress a blow-off of the air/fuel mixture and is excellent in acceleration, the two-cycle combustion engine includes scavenging passages (13, 14) communicating between a combustion chamber (1a) and a crank chamber (2a), an air/furl mixture passage (11) for introducing an air/fuel mixture (EM) from a fuel supply device (3) to the crank chamber (2a), and a branch passage (10A) ramified off from the air/fuel mixture passage (11) for supplying a lean air/fuel mixture (TM) into the scavenging passages (14). During an intake stroke, the lean air/fuel mixture (TM) from the branch passage (10A) is introduced into the scavenging passages (14) and the air/fuel mixture (EM) is introduced from the air/fuel mixture passage (11) into the crank chamber (2a). During a scavenging stroke, the lean air/fuel mixture (TM) is supplied from the scavenging passages (14) into the combustion chamber (2a) prior to introduction of the air/fuel mixture (EM).
摘要翻译：为了提供一种简化结构的双循环内燃机，减少了部件数量，有效地抑制空气/燃料混合物的吹出，并且加速性优异，两循环内燃机包括清扫通道（1a）和燃烧室（1a）之间连通的空气/混合物通道（11），用于从燃料供给装置（3）引入空气/燃料混合物（EM）以及从空气/燃料混合物通道（11）分支的用于将稀空气/燃料混合物（TM）供应到扫气通道（14）中的分支通道（10A）。在进气行程中，来自分支通道（10A）的稀空气/燃料混合物（TM）被引入扫气通道（14），空气/燃料混合物（EM）从空气/燃料混合物通道 11）进入曲柄室（2a）。在清扫行程期间，在引入空气/燃料混合物（EM）之前，稀空气/燃料混合物（TM）从扫气通道（14）供应到燃烧室（2a）中。

5. 发明授权

US07536982B2 Two-cycle combustion engine of air scavenging type 有权
标题翻译：空气清扫型双循环内燃机
公开(公告)号：US07536982B2
公开(公告)日：2009-05-26
申请号：US10530153
申请日：2003-10-10
申请人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
IPC分类号： F02B33/04 , F02B25/00
CPC分类号： F02B25/22 , F01M3/02 , F02B2075/025 , F02M35/1019 , F02M35/10275 , F02M35/108
摘要： An engine including first scavenging passages for fluidly connecting between a combustion chamber and a crank chamber through bearings for the crankshaft, second scavenging passages fluidly connecting directly between the combustion chamber and the crank chamber, a suction chamber formed in a side face of a piston. An air-fuel mixture is sucked into the suction chamber and an air is introduced into the crank chamber. During the intake stroke, the air-fuel mixture from the air-fuel mixture passage is introduced into the first scavenging passages through the suction chambers, and the air is introduced into the crank chamber. During the scavenging stroke, before the air-fuel mixture in the first scavenging passages is introduced into the combustion chamber, introduction of the air in the crank chamber into the combustion chamber through the second scavenging passages starts.
摘要翻译：一种发动机，包括用于通过曲轴的轴承将燃烧室与曲柄室流体连接的第一扫气通道，直接在燃烧室和曲柄室之间流体连接的第二扫气通道，形成在活塞的侧面的吸入室。空气 - 燃料混合物被吸入吸入室，并且空气被引入到曲柄室中。在进气冲程期间，来自空气 - 燃料混合物通道的空气 - 燃料混合物通过抽吸室被引入到第一扫气通道中，空气被引入曲柄室。在清扫行程中，在第一扫气通道内的空气混合物被引入到燃烧室之前，通过第二扫气通道将曲柄室内的空气引入燃烧室。

6. 发明申请

US20070119404A1 Two-cycle combustion engine 有权
标题翻译：双循环内燃机
公开(公告)号：US20070119404A1
公开(公告)日：2007-05-31
申请号：US11606259
申请日：2006-11-28
申请人： Tsuneyoshi Yuasa , Isao Yoshimizu , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Isao Yoshimizu , Masanori Kobayashi
IPC分类号： F02B75/22
CPC分类号： F02F7/0004 , F02B2075/025 , F02F7/0036 , F02F7/0082
摘要： To provide a two cycle combustion engine utilizing a connecting structure of a shape that can be formed inexpensively with a simple process to enable the efficiency of cooling of the cylinder block to be maintained at a high level and, also, that can firmly connect the cylinder block with the crankcase with fastening forces exerted by the fastening bolts, the two cycle combustion engine includes a crankcase 2 including first and second crank casings 2A and 2B that are split in a direction conforming to a crank axis C for operatively supporting a crankshaft 11, and a cylinder block 1 having a cylinder bore 1a defined therein and fixedly mounted atop the crankcase 2 by means of a plurality of fastening members 38 and 39 fitted in a direction upwardly from a crankcase-side.
摘要翻译：为了提供一种双循环内燃机，其利用可以以简单的方法廉价地形成的形状的连接结构，以使气缸体的冷却效率保持在高水平，并且还可以将气缸具有由紧固螺栓施加的紧固力的曲轴箱，两循环内燃机包括曲轴箱2，曲轴箱2包括第一和第二曲柄壳体2A和2B，该曲轴箱2沿与曲柄轴线C一致的方向分开，用于可操作地支撑曲轴 11以及具有限定在其中的气缸孔1a的气缸体1，并且通过沿从曲轴箱侧向上方向嵌合的多个紧固构件38和39固定地安装在曲轴箱2的顶部。

7. 发明授权

US07096834B2 Two-cycle combustion engine 有权
标题翻译：双循环内燃机
公开(公告)号：US07096834B2
公开(公告)日：2006-08-29
申请号：US11033660
申请日：2005-01-11
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F02B25/00
CPC分类号： F02B25/20 , F02B25/14
摘要： To provide a two-cycle combustion engine of a simplified structure with the number of component parts reduced, which is effective to suppress a blow-off of the air/fuel mixture and is excellent in acceleration, the two-cycle combustion engine includes scavenging passages communication between a combustion chamber and a crank chamber, an air/furl mixture passage for introducing an air/fuel mixture from a fuel supply device to the crank chamber, and a branch passage ramified off from the air/fuel mixture passage for supplying a lean air/fuel mixture into the scavenging passages. During an intake stroke, the lean air/fuel mixture from the branch passage is introduced into the scavenging passages and the air/fuel mixture is introduced from the air/fuel mixture passage into the crank chamber. During a scavenging stroke, the lean air/fuel mixture is supplied from the scavenging passages into the combustion chamber prior to introduction of the air/fuel mixture.
摘要翻译：为了提供一种简化结构的双循环内燃机，减少了部件数量，有效地抑制空气/燃料混合物的排放，并且加速性优异，所以双循环内燃机包括清扫通道燃烧室和曲柄室之间的连通，用于将空气/燃料混合物从燃料供应装置引入到曲柄室的空气/混合物通道，以及从空气/燃料混合物通道分支的分支通道，用于供应稀薄空气/燃料混合物进入扫气通道。在进气行程中，来自分支通道的贫空气/燃料混合物被引入扫气通道中，空气/燃料混合物从空气/燃料混合物通道引入曲柄室。在清扫行程期间，在引入空气/燃料混合物之前，稀薄空气/燃料混合物从扫气通道供应到燃烧室中。

8. 发明申请

US20050284430A1 Air scavenging-type two-cycle engine 有权
标题翻译：空气清扫型双循环发动机
公开(公告)号：US20050284430A1
公开(公告)日：2005-12-29
申请号：US10530153
申请日：2003-10-10
申请人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
IPC分类号： F01M3/02 , F02B25/22 , F02B75/02 , F02M35/10 , F02B25/00 , F02B33/04
CPC分类号： F02B25/22 , F01M3/02 , F02B2075/025 , F02M35/1019 , F02M35/10275 , F02M35/108
摘要： An engine including first scavenging passages for fluidly connecting between a combustion chamber and a crank chamber through bearings for the crankshaft, second scavenging passages fluidly connecting directly between the combustion chamber and the crank chamber, a suction chamber formed in a side face of a piston. An air-fuel mixture is sucked into the suction chamber and an air is introduced into the crank chamber. During the intake stroke, the air-fuel mixture from the air-fuel mixture passage is introduced into the first scavenging passages through the suction chambers, and the air is introduced into the crank chamber. During the scavenging stroke, before the air-fuel mixture in the first scavenging passages is introduced into the combustion chamber, introduction of the air in the crank chamber into the combustion chamber through the second scavenging passages starts.
摘要翻译：一种发动机，包括用于通过曲轴的轴承将燃烧室与曲柄室流体连接的第一扫气通道，直接在燃烧室和曲柄室之间流体连接的第二扫气通道，形成在活塞的侧面的吸入室。空气 - 燃料混合物被吸入吸入室，并且空气被引入到曲柄室中。在进气冲程期间，来自空气 - 燃料混合物通道的空气 - 燃料混合物通过抽吸室被引入到第一扫气通道中，空气被引入曲柄室。在清扫行程中，在第一扫气通道内的空气混合物被引入到燃烧室之前，通过第二扫气通道将曲柄室内的空气引入燃烧室。

9. 发明申请

US20050252715A1 Muffler for compact combustion engines 有权
标题翻译：消声器用于紧凑型内燃机
公开(公告)号：US20050252715A1
公开(公告)日：2005-11-17
申请号：US11114497
申请日：2005-04-26
申请人： Masanori Kobayashi , Tsuneyoshi Yuasa
发明人： Masanori Kobayashi , Tsuneyoshi Yuasa
IPC分类号： F01N1/08 , F01N3/24 , F01N13/14 , F01N13/20
CPC分类号： F01N13/002 , F01N1/084 , F01N2230/04 , F01N2230/06 , F01N2590/06
摘要： To provide a muffler for a compact combustion engine, which is simple in structure and effective to sufficiently reduce the temperature of exhaust gases while avoiding contact with an external air, an exhaust guide passage 7 for communicating the exhaust gases (G) to a discharge port (63) is provided within an interior hollow of a muffler housing 6 defining an exhaust chamber (61) therein, and a side wall of this exhaust guide passage (7) is constituted by a portion (6W) of the muffler housing (6) and a duct wall (71) jointed to the muffler housing (6).
摘要翻译：为了提供一种用于紧凑型内燃机的消声器，其结构简单且有效地充分降低废气的温度同时避免与外部空气接触，排气引导通道7将废气（G）连通到排出口（63）设置在限定了排气室（61）的消声器壳体6的内部空腔内，该排气引导通道（7）的侧壁由消声器壳体（6）的一部分（6W）构成）和连接到消音器壳体（6）的管道壁（71）。

10. 发明授权

US08127724B2 Cylinder block for a two-cycle combustion engine 有权
标题翻译：用于双循环内燃机的气缸体
公开(公告)号：US08127724B2
公开(公告)日：2012-03-06
申请号：US12215286
申请日：2008-06-26
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F02B25/00
CPC分类号： F02B25/22 , F02B25/14 , F02B33/04 , F02B33/44 , F02B63/02 , F02B2075/025 , Y10T29/4927
摘要： A cylinder block includes a scavenging passage, which extends between a combustion chamber and a crankcase chamber to communicate them together and has a scavenging port defined in the cylinder block so as to open at an inner peripheral surface of the cylinder block. An intake passage or exhaust passage, the scavenging passage including the scavenging port and a throughhole defined therebetween are formed by the use of a molding piece movable in a direction towards the fuel intake passage or exhaust passage and the throughhole is closed by a lid.
摘要翻译：气缸体包括扫气通道，其在燃烧室和曲轴箱室之间延伸以将它们连通在一起，并且具有限定在气缸体中的扫气口，以便在气缸体的内周表面处开口。进气通道或排气通道，通过包括扫气口和在其间限定的通孔的扫气通道，通过使用可沿着朝向燃料进气通道或排气通道的方向移动的成型件形成，并且通孔由盖封闭。

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