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    Two-stroke internal combustion engine
    1.
    发明授权
    Two-stroke internal combustion engine 有权
    二冲程内燃机

    公开(公告)号：US07082910B2

    公开(公告)日：2006-08-01

    申请号：US09952383

    申请日：2001-09-14

    申请人： Bo Carlsson ,  Roy Ekdahl ,  Hans Ström

    发明人： Bo Carlsson ,  Roy Ekdahl ,  Hans Ström

    IPC分类号： F02B25/20

    CPC分类号： F02B25/14 ,  F02B25/22 ,  F02B33/04 ,  F02B63/02 ,  F02B2075/025 ,  F02F1/22 ,  F02F3/24

    摘要： Crankcase scavenged two-stroke internal combustion engine (1), in which a piston ported air passage is arranged between an air inlet (2) and the upper part of a number of transfer ducts (3, 3′). The air passage is arranged from an air inlet (2) equipped with a restriction valve (4), controlled by at least one engine parameter, for instance the carburetor throttle control. The air inlet extends via at least one connecting duct (6, 6′) to at least one connecting port (8, 8′) in the engine's cylinder wall (12). The connecting port (8, 8′) is arranged so that it in connection with piston positions at the top dead center is connected with flow paths (10, 10′) embodied in the piston (13), which extend to the upper part of a number of transfer ducts (3, 3′). Each flow path through the cylinder and piston is to a great extent arranged in the cylinder's lateral direction, on the one hand in that the connecting port (8, 8′) and adjacent scavenging port (31, 31′) of the cylinder are shifted sideways in relation to each other along the periphery of the cylinder wall (12), and on the other hand in that the transfer ducts (3, 3′) of the cylinder are running essentially in the cylinder's lateral direction away from each transfer port (31, 31′) respectively, i.e. tangentially in relation to the circumference of the cylinder wall (12).

    摘要翻译： 曲轴箱清扫二冲程内燃机（1），其中活塞端口空气通道布置在空气入口（2）和多个输送管道（3,3'）的上部之间。 空气通道从配备有限制阀（4）的进气口（2）布置，由至少一个发动机参数控制，例如化油器节气门控制。 空气入口经由至少一个连接管道（6,6'）延伸到发动机气缸壁（12）中的至少一个连接端口（8,8'）。 连接端口（8,8'）被布置成使得其与上死点处的活塞位置相连接，该流动路径（10,10'）具体体现在活塞（13）中，该流动路径延伸到 多个输送管道（3,3'）。 一方面，通过气缸和活塞的每个流动路径都大大地设置在气缸的横向上，一方面是气缸的连接口（8,8'）和相邻的清空口（31,31'）移动 沿着气缸壁（12）的周边相对于彼此横向相对，另一方面是气缸的传送管道（3,3'）基本上在气缸的横向方向上远离每个传送端口（ 31，31'），即相对于气缸壁（12）的圆周切向。

    TWO-STROKE INTERNAL COMBUSTION ENGINE
    2.
    发明申请
    TWO-STROKE INTERNAL COMBUSTION ENGINE 有权
    两冲程内燃机

    公开(公告)号：US20060169225A1

    公开(公告)日：2006-08-03

    申请号：US11278539

    申请日：2006-04-03

    申请人： Bo Carlsson ,  Roy Ekdahl ,  Hans Strom

    发明人： Bo Carlsson ,  Roy Ekdahl ,  Hans Strom

    IPC分类号： F02B33/00 ,  F02B33/04 ,  F02B25/00

    CPC分类号： F02B25/14 ,  F02B25/22 ,  F02B33/04 ,  F02B63/02 ,  F02B2075/025 ,  F02F1/22 ,  F02F3/24

    摘要： Crankcase scavenged two-stroke internal combustion engine (1), in which a piston ported air passage is arranged between an air inlet (2) and the upper part of a number of transfer ducts (3, 3′). The air passage is arranged from an air inlet (2) equipped with a restriction valve (4), controlled by at least one engine parameter, for instance the carburetor throttle control. The air inlet extends via at least one connecting duct (6, 6′) to at least one connecting port (8, 8′) in the engine's cylinder wall (12). The connecting port (8, 8′) is arranged so that it in connection with piston positions at the top dead center is connected with flow paths (10, 10′) embodied in the piston (13), which extend to the upper part of a number of transfer ducts (3, 3′). Each flow path through the cylinder and piston is to a great extent arranged in the cylinder's lateral direction, on the one hand in that the connecting port (8, 8′) and adjacent scavenging port (31, 31′) of the cylinder are shifted sideways in relation to each other along the periphery of the cylinder wall (12), and on the other hand in that the transfer ducts (3, 3′) of the cylinder are running essentially in the cylinder's lateral direction away from each transfer port (31, 31′) respectively, i.e. tangentially in relation to the circumference of the cylinder wall (12).

    摘要翻译： 曲轴箱清扫二冲程内燃机（1），其中活塞端口空气通道布置在空气入口（2）和多个输送管道（3,3'）的上部之间。 空气通道从配备有限制阀（4）的进气口（2）布置，由至少一个发动机参数控制，例如化油器节气门控制。 空气入口经由至少一个连接管道（6,6'）延伸到发动机气缸壁（12）中的至少一个连接端口（8,8'）。 连接端口（8,8'）被布置成使得其与上死点处的活塞位置相连接，该流动路径（10,10'）具体体现在活塞（13）中，该流动路径延伸到 多个输送管道（3,3'）。 一方面，通过气缸和活塞的每个流动路径都大大地设置在气缸的横向上，一方面是气缸的连接口（8,8'）和相邻的清空口（31,31'）移动 沿着气缸壁（12）的周边相对于彼此横向相对，另一方面是气缸的传送管道（3,3'）基本上在气缸的横向方向上远离每个传送端口（ 31，31'），即相对于气缸壁（12）的圆周切向。

    Two-stroke internal combustion engine
    3.
    发明授权
    Two-stroke internal combustion engine 有权

    公开(公告)号：US07565886B2

    公开(公告)日：2009-07-28

    申请号：US11278539

    申请日：2006-04-03

    申请人： Bo Carlsson ,  Roy Ekdahl ,  Hans Strom

    发明人： Bo Carlsson ,  Roy Ekdahl ,  Hans Strom

    IPC分类号： F02B33/00

    CPC分类号： F02B25/14 ,  F02B25/22 ,  F02B33/04 ,  F02B63/02 ,  F02B2075/025 ,  F02F1/22 ,  F02F3/24

    摘要： Crankcase scavenged two-stroke internal combustion engine (1), in which a piston ported air passage is arranged between an air inlet (2) and the upper part of a number of transfer ducts (3, 3′). The air passage is arranged from an air inlet (2) equipped with a restriction valve (4), controlled by at least one engine parameter, for instance the carburetor throttle control. The air inlet extends via at least one connecting duct (6, 6′) to at least one connecting port (8, 8′) in the engine's cylinder wall (12). The connecting port (8, 8′) is arranged so that it in connection with piston positions at the top dead center is connected with flow paths (10, 10′) embodied in the piston (13), which extend to the upper part of a number of transfer ducts (3, 3′). Each flow path through the cylinder and piston is to a great extent arranged in the cylinder's lateral direction, on the one hand in that the connecting port (8, 8′) and adjacent scavenging port (31, 31′) of the cylinder are shifted sideways in relation to each other along the periphery of the cylinder wall (12), and on the other hand in that the transfer ducts (3, 3′) of the cylinder are running essentially in the cylinder's lateral direction away from each transfer port (31, 31′) respectively, i.e. tangentially in relation to the circumference of the cylinder wall (12).

    Gas sampling method and dilution tunnel therefor
    4.
    发明授权
    Gas sampling method and dilution tunnel therefor 失效
    气体采样方法和稀释隧道

    公开(公告)号：US5410907A

    公开(公告)日：1995-05-02

    申请号：US111843

    申请日：1993-08-25

    申请人： Hans Strom ,  Roy Ekdahl ,  Edwin S. Harbuck

    发明人： Hans Strom ,  Roy Ekdahl ,  Edwin S. Harbuck

    IPC分类号： F02M17/04 ,  G01N1/22 ,  G01N33/00

    CPC分类号： F02M17/04 ,  G01N1/2252 ,  G01N33/0011 ,  G01N33/0016 ,  G01N33/004

    摘要： Emission gasses from an engine exhaust pipe are collected through an inlet of a dilution tunnel which is an elongated, hollow tube. The inlet is spaced from the exhaust pipe to also admit surrounding air. The air and emissions are mixed in the tunnel by a screen in the tunnel. A probe in the tunnel diverts a portion of the mixture to gas analyzers. Prior to analysis the mixture may be condensed, filtered or otherwise processed.

    摘要翻译： 来自发动机排气管的排放气体通过作为细长的中空管的稀释通道的入口收集。 入口与排气管间隔开，同时也允许进入周围的空气。 空气和排放物通过隧道中的屏幕在隧道中混合。 隧道中的探头将一部分混合物转移到气体分析仪中。 在分析之前，可以将混合物冷凝，过滤或以其它方式处理。

    Gas sampling method and dilution tunnel therefor
    5.
    发明授权
    Gas sampling method and dilution tunnel therefor 失效
    气体采样方法和稀释隧道

    公开(公告)号：US5450749A

    公开(公告)日：1995-09-19

    申请号：US219672

    申请日：1994-03-28

    申请人： Hans Strom ,  Roy Ekdahl ,  Edwin S. Harbuck

    发明人： Hans Strom ,  Roy Ekdahl ,  Edwin S. Harbuck

    IPC分类号： G01M15/04 ,  F02D41/14 ,  F02D45/00 ,  F02M17/04 ,  F02M19/01 ,  G01N1/22 ,  G01N33/00 ,  G01M15/00

    CPC分类号： F02M17/04 ,  G01N1/2252 ,  G01N33/0011 ,  G01N33/0016 ,  G01N33/004

    摘要： Emission gasses from an engine exhaust pipe are collected through an inlet of a dilution tunnel which is an elongated, hollow tube. The inlet is spaced from the exhaust pipe to also admit surrounding air. Ambient air and emissions are mixed in the tunnel by a screen in the tunnel. A probe in the tunnel diverts a portion of the mixture to gas analyzers. Prior to analysis the mixture may be condensed, filtered or otherwise processed. The analysis determines a CO/CO.sub.2 ratio which is used to determine the air/fuel ratio in the engine based on characteristics of the fuel. The air/fuel mixture of the engine is then adjusted to achieve desired performance.

    摘要翻译： 来自发动机排气管的排放气体通过作为细长的中空管的稀释通道的入口收集。 入口与排气管间隔开，同时也允许进入周围的空气。 环境空气和排放物通过隧道中的屏幕在隧道中混合。 隧道中的探头将一部分混合物转移到气体分析仪中。 在分析之前，可以将混合物冷凝，过滤或以其它方式处理。 该分析确定用于基于燃料的特性来确定发动机中的空气/燃料比的CO / CO 2比。 然后调整发动机的空气/燃料混合物以实现期望的性能。

    Twin-piston engine
    6.
    发明授权
    Twin-piston engine 失效
    双活塞发动机

    公开(公告)号：US5722355A

    公开(公告)日：1998-03-03

    申请号：US716352

    申请日：1996-09-27

    申请人： Roy Ekdahl ,  Lars Larsson

    发明人： Roy Ekdahl ,  Lars Larsson

    IPC分类号： F02B25/12 ,  F02B75/02

    CPC分类号： F02B25/12 ,  F02B2075/025

    摘要： A twin-piston engine (1), i.e., a crankcase scavenged two-stroke internal combustion engine comprising two pistons (2,3) travelling in essentially the same direction, and wherein one (4) of the cylinder bores, the exhaust bore (4), contains all exhaust ports (6), and the other cylinder bore (5), the scavenging cylinder bore, contains a number of scavenging ports (7,8,9). All suction ports (16) of the engine are positioned in the scavenging cylinder bore and a fuel supply device (20), such as a carburetor, is connected to the suction port/ports (16) and is positioned essentially on the line of extension (29) passing through the cross-sectional centers of the two cylinder bores whereas the exhaust port (6) is positioned essentially in alignment with the extension of that same line (29) in the opposite direction, and in that the mouth of the exhaust port (6) on the external face of the cylinder is provided with an essentially direct-mounted muffler (25) whereby the fuel supply device (20) and said muffler (25) will be positioned on opposite sides of the cylinder body.

    摘要翻译： PCT No.PCT / SE95 / 00344 Sec。 371日期1996年9月27日第 102（e）日期1996年9月27日PCT 1995年3月31日PCT PCT。 公开号WO95 / 27129 日期1995年10月12日一种双活塞式发动机（1），即包括沿基本上相同的方向行进的两个活塞（2,3）的曲轴箱清扫的二冲程内燃机，并且其中一个（4）的气缸孔 排气孔（4）包含所有排气口（6），而另一个气缸孔（5），扫气缸孔包含多个扫气口（7,8,9）。 发动机的所有吸入口（16）定位在扫气缸内，并且诸如化油器的燃料供应装置（20）连接到吸入口/端口（16），并且基本上位于延伸线 （29）穿过所述两个气缸孔的横截面中心，而所述排气口（6）基本上与所述同一管线（29）在相反方向上的延伸部对准，并且所述排气口 在气缸的外表面上的端口（6）设置有基本上直接安装的消声器（25），由此燃料供应装置（20）和消音器（25）将位于气缸体的相对侧上。