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    Two-stroke internal combustion engine
    11.
    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).

    TWO-STROKE INTERNAL COMBUSTION ENGINE
    14.
    发明申请
    TWO-STROKE INTERNAL COMBUSTION ENGINE 有权
    两冲程内燃机

    公开(公告)号：US20060130784A1

    公开(公告)日：2006-06-22

    申请号：US10908698

    申请日：2005-05-23

    申请人： Lars Andersson ,  Goran Dahlberg ,  Bo Jonsson ,  Hans Strom

    发明人： Lars Andersson ,  Goran Dahlberg ,  Bo Jonsson ,  Hans Strom

    IPC分类号： F02B33/04

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

    摘要： A 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 inlet is 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 (7, 7′) in the engine's cylinder wall (12). The connecting port (7, 7′) is arranged so that when the piston is in a top dead center configuration, it is connected with flow paths (9, 9′) embodied in the piston (13). The flow paths (9, 9′) extend to the upper part of a number of transfer ducts (3, 3′), and the flow paths in the piston are arranged so that the recess (10, 10′; 11, 11′) in the piston that meets the respective transfer duct's port (31, 31′) in a manner that the air supply is given an essentially equally long period, counted as crank angle or time, in relation to the fuel and air mixture inlet period.

    摘要翻译： 一种曲轴箱清扫的二冲程内燃机（1），其中在空气入口（2）和多个输送管道（3,3'）的上部之间布置有活塞端口空气通道。 空气入口配有限制阀（4），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（7,7'）。 连接端口（7,7'）被布置成使得当活塞处于上止点构型时，其连接有实施在活塞（13）中的流动路径（9,9'）。 流动路径（9,9'）延伸到多个传送管道（3,3'）的上部，并且活塞中的流动路径被布置成使得凹部（10,10'; 11,11' ）在空气供应相对于燃料和空气混合物入口周期计算为曲柄角或时间的方式基本相当长的时间段内与活塞相接触的活塞中。