公开(公告)号：US08065981B2

公开(公告)日：2011-11-29

申请号：US12309054

申请日：2007-06-21

Applicant: Shigetoshi Ishida

Inventor： Shigetoshi Ishida

IPC: F02B25/00

CPC classification number: F02B33/04 ,  F02B25/14 ,  F02B25/22 ,  F02B2075/025 ,  F02F1/22 ,  F02F3/24 ,  F02M35/1019 ,  F02M35/108

Abstract: A stratified scavenging two-cycle engine that has a simpler structure than conventional stratified scavenging two-cycle engines and that has an excellent blow-by prevention effect etc. In an air intake stroke, lead air passes a lead-air port (12) etc. to flow into an inner space of a piston (6) during a period from the instant at which a lateral groove (21b) starts to superpose on the lead-air port (12) until the superposing between the lateral groove (21b) and the lead-air port (12) disappears after the piston (6) passes its top dead center. Further, in a scavenging stroke, lead air passes a scavenging path (17) etc. to flow into a cylinder (4) from a scavenging port (18) during a period from the instant at which a scavenging connection opening (20) and a scavenging inflow opening (19) start to superpose on each other until the superposing between the scavenging connection opening (20) and the scavenging inflow opening (19) disappears after the piston (6) passes its bottom dead center. Then, a mixture gas passes the inside of the piston (6) to flow into the cylinder (4) from the scavenging port (18).

Abstract translation: 一种分层清扫双循环发动机，结构比传统分层清扫双循环发动机结构更简单，具有良好的防漏效果。在进气冲程中，引导空气通过引气口（12）等 在从横向槽（21b）开始叠加在引入空气端口（12）上的时刻的期间，流入活塞（6）的内部空间，直到横向槽（21b）和 活塞（6）通过其上死点后，引导空气端口（12）消失。 此外，在清扫行程中，在从扫气连接口（20）和清扫口（20）的瞬间的期间，引导空气通过扫气路（17）等从扫气口（18）流入气缸（4） 清扫流入口（19）开始彼此重叠，直到在活塞（6）通过其下死点之后，扫气连接开口（20）和扫气流入口（19）之间的叠加消失。 然后，混合气体从活塞（6）的内部通过从扫气口（18）流入气缸（4）。

公开(公告)号：US08181611B2

公开(公告)日：2012-05-22

申请号：US12300560

申请日：2007-05-10

Applicant: Shigetoshi Ishida

Inventor： Shigetoshi Ishida

IPC: F02B25/00

CPC classification number: F02B25/16 ,  F02B25/22 ,  F02B2075/025 ,  F02F1/22 ,  F02F3/24

Abstract: Provided is a laminar-scavenging two-cycle engine, which can have a higher laminar-scavenging effect than that of the laminar-scavenging two-cycle engine of the prior art and which can expect drastically excellent effects on the stabilization of combustion and on the blow-by prevention. The laminar-scavenging two-cycle engine is characterized in that a scavenging passage (4) is constituted to include a portion (or a crankcase side portion (4a)) extending along a crankcase (9) and a portion (or a cylinder side portion (4b)) extending along a cylinder (10) and to have a length larger than the sum of the diameter and stroke of the cylinder (10), in that an ambient air introducing passage (11) for introducing the leading air into the scavenging passage (4) is connected to an intermediate portion of the scavenging passage (4), and in that a notch (8a) for opening a scavenging port (7) to the side of the crankcase (9) when a piston (8) is near the top dead center is formed in the piston (8).

Abstract translation: 提供了一种层流清扫双循环发动机，其能够具有比现有技术的层流清扫双循环发动机更高的层流清除效果，并且可以预期对燃烧稳定性的显着优异的影响 窜漏预防。 层状扫气二冲程发动机的特征在于，扫气通道（4）构成为包括沿曲轴箱（9）延伸的部分（或曲轴箱侧部分（4a））和一部分（或气缸侧部分 （4b）），其长度大于所述气缸（10）的直径和冲程的总和，其特征在于，所述环境空气引入通道（11）用于将引导空气引入所述清扫 通道（4）连接到扫气通道（4）的中间部分，并且当活塞（8）为活塞（8）时，用于将扫气口（7）打开到曲轴箱（9）侧的切口（8a） 在活塞（8）上形成靠近上止点的位置。