公开(公告)号：US08833316B2

公开(公告)日：2014-09-16

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： F02B25/00 ,  F02B33/04 ,  F02B25/22 ,  F02B25/20 ,  F02B25/14 ,  F02B33/00

CPC分类号： F02B33/00 ,  F02B25/14 ,  F02B25/20 ,  F02B25/22 ,  F02B33/04

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。

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

CPC分类号： F02B33/00 ,  F02B25/14 ,  F02B25/20 ,  F02B25/22 ,  F02B33/04

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。