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1. 发明授权

US06394049B2 Exhaust valve device for two-cycle engine 失效
标题翻译：排气阀装置用于双循环发动机
公开(公告)号：US06394049B2
公开(公告)日：2002-05-28
申请号：US09826864
申请日：2001-04-06
申请人： Junichi Ishida , Hiroyuki Uchida , Shigeyuki Hara
发明人： Junichi Ishida , Hiroyuki Uchida , Shigeyuki Hara
IPC分类号： F02B2520
CPC分类号： F02D13/0284 , F02B2075/025 , F02F1/22 , Y02T10/18
摘要： A common drive shaft for first and second exhaust control valves is formed of a single piece. A first exhaust valve adjusting exhaust timing and a second exhaust valve adjusting a sectional area of an exhaust passage are provided on the common drive shaft. The second exhaust valve is rotated integrally with the drive shaft. The first exhaust valve is fitted on the drive shaft via an intermediate sleeve and a torsion coil spring. A linkage mechanism is provided so that the intermediate sleeve is stopped at a limit of rotation of the first exhaust valve. Thereafter, only the second exhaust valve is rotated.
摘要翻译：用于第一和第二排气控制阀的公共驱动轴由单件形成。调节排气正时的第一排气阀和调节排气通道的截面积的第二排气阀设置在公共驱动轴上。第二排气阀与驱动轴一体旋转。第一排气阀通过中间套筒和扭力螺旋弹簧安装在驱动轴上。提供连杆机构，使得中间套筒在第一排气阀的旋转极限下停止。此后，只有第二排气阀旋转。

2. 发明授权

US06415748B2 Exhaust control system in two-cycle internal combustion engine 失效
标题翻译：双循环内燃机排气控制系统
公开(公告)号：US06415748B2
公开(公告)日：2002-07-09
申请号：US09874120
申请日：2001-06-06
申请人： Hiroyuki Uchida , Shigeyuki Hara , Masaharu Ugai , Yasuo Sasamura
发明人： Hiroyuki Uchida , Shigeyuki Hara , Masaharu Ugai , Yasuo Sasamura
IPC分类号： F02B2520
CPC分类号： F02D13/0284 , F02B2075/025 , Y02T10/18
摘要： It is intended to provide an exhaust control system in a two-cycle internal combustion engine capable of suppressing the occurrence of irregular combustion when an opening timing of an exhaust port is set to a maximum delay timing, thereby improving the combustion stability and affording a high engine output when the opening timing of the exhaust port is set to a maximum advance timing. In the exhaust control system, an exhaust control valve has valve elements movable between their maximum projected positions at which a maximum delay timing of the exhaust ports is set and their maximum retracted positions at which a maximum advance timing of the exhaust ports is set. The valve elements are provided with control surfaces, that face a cylinder bore at the maximum projected positions of the valve elements to close upper port portions of the exhaust ports. Lower edges of the control surfaces are formed in a shape that substantially coincides with the shape of upper edges of the exhaust ports at the retracted positions of the valve elements. A pair of communication passages are formed in the valve elements, respectively, having first end portions, at the maximum projected positions of the valve elements, open to lower control surface portions positioned lower than top portions of the lower edges, and second, opposite end portions which are directly open to the exhaust passage.
摘要翻译：本发明的目的是在排气口的打开正时被设定为最大延迟定时的情况下，提供能够抑制不规则燃烧的发生的双循环内燃机中的排气控制系统，从而提高燃烧稳定性并提供高当排气口的打开定时被设定为最大提前定时时，发动机输出。在排气控制系统中，排气控制阀具有可在排气口的最大延迟定时被设定的最大突出位置和设定排气口的最大前进定时的最大缩回位置之间移动的阀元件。阀元件设置有控制表面，其在阀元件的最大突出位置处面对气缸孔以封闭排气口的上端口部分。控制表面的下边缘形成为与阀元件的缩回位置处的排气口的上边缘的形状基本一致的形状。在阀元件中分别形成有一对连通通道，其具有在阀元件的最大突出位置处的第一端部开放到位于比下边缘的顶部低的下部控制表面部分，并且第二相对端直接通向排气通道的部分。

3. 发明授权

US06230672B1 Two-cycle internal combustion engine 失效
标题翻译：双循环内燃机
公开(公告)号：US06230672B1
公开(公告)日：2001-05-15
申请号：US08866299
申请日：1997-05-30
申请人： Yoichi Ishibashi , Kenji Nishida , Shinichi Isomura , Masahiro Asai , Hideki Noritake , Masami Takubo
发明人： Yoichi Ishibashi , Kenji Nishida , Shinichi Isomura , Masahiro Asai , Hideki Noritake , Masami Takubo
IPC分类号： F02B2520
CPC分类号： F02B25/14 , F02B25/20 , F02B2075/025
摘要： To provide a two-cycle internal combustion engine capable of preventing the blow-by phenomenon to improve fuel economy and attain a high exhaust gas purifying performance, and increasing the responsiveness of fuel injection volume. In a two-cycle internal combustion engine, a chamber is disposed in scavenging passages for communicating a crank chamber to a combustion chamber, sealable control valves are respectively disposed in an inlet and an outlet of the chamber, and a fuel feeding system for the supply of fuel into the chamber is provided. The chamber is communicated to one scavenging passage out of a plurality of parallel scavenging passages. The combustion chamber side control valve disposed at an outlet of the chamber on the downstream side of the crank case side control valve provided at an inlet of the chamber, is positioned at the bottom portion of a scavenging passage communicated to the chamber.
摘要翻译：提供能够防止窜气现象提高燃料经济性并获得高废气净化性能的双循环内燃机，并且提高燃油喷射量的响应性。在一个双循环内燃机中，腔室设置在用于将曲柄室连通到燃烧室的扫气通道中，可密封的控制阀分别设置在腔室的入口和出口中，以及用于供给的燃料供给系统提供了燃料进入腔室。所述室与多个平行清扫通道中的一个清除通道相通。设置在设置在室的入口处的曲轴箱侧控制阀的下游侧的室的出口处的燃烧室侧控制阀位于与室连通的扫气通道的底部。

4. 发明授权

US06415750B2 Two-stroke engine 有权
标题翻译：二冲程发动机
公开(公告)号：US06415750B2
公开(公告)日：2002-07-09
申请号：US09795390
申请日：2001-03-01
申请人： Heiko Rosskamp , Axel Klimmek , Peter Linsbauer , Lars Bergmann
发明人： Heiko Rosskamp , Axel Klimmek , Peter Linsbauer , Lars Bergmann
IPC分类号： F02B2520
CPC分类号： F02B33/44 , F02B25/22 , F02B33/04 , F02B33/446 , F02B63/02 , F02B2075/025 , F02M23/03 , Y02T10/146
摘要： A two-stroke engine for a portable two-stroke engine in a portable handheld work apparatus includes a combustion chamber (3) formed in a cylinder (2). The combustion chamber (3) is delimited by the piston (5) which drives the crankshaft (7) via a connecting rod (6). The two-stroke engine includes several transfer channels (14), which, referred to a symmetry plane (49), lie on opposite sides (47, 48) with the plane partitioning approximately the outlet (10). The transfer channels (14) connect the crankcase (4) to the combustion chamber (3). A first end (20) of each transfer channel (14) opens via an entry window (12, 15) into the combustion chamber (3) and the second end (19) of each transfer channel opens to the crankcase (4). Each transfer channel (14) is connected, between its ends (19, 20), to an air channel (22a, 22b) via a membrane valve (21). Air is supplied by the air channel (22a, 22b) via an adjustable throttle (31, 32).
摘要翻译：用于便携式手持式工作装置中的便携式二冲程发动机的二冲程发动机包括形成在气缸（2）中的燃烧室（3）。燃烧室（3）由经由连杆（6）驱动曲轴（7）的活塞（5）限定。二冲程发动机包括几个传递通道（14），其被称为对称平面（49），位于相对侧（47,48）上，其中平面大致分开出口（10）。传送通道（14）将曲轴箱（4）连接到燃烧室（3）。每个传送通道（14）的第一端（20）经由进入窗口（12,15）进入燃烧室（3）并且每个传送通道的第二端（19）通向曲轴箱（4）。每个传送通道（14）通过膜阀（21）在其端部（19,20）之间连接到空气通道（22a，22b）。空气通过空气通道（22a，22b）经由可调节的节流阀（31,32）供应。

5. 发明授权

US06401673B2 Two-stroke engine having a bypass branching from an air filter housing 有权
标题翻译：具有从空气过滤器壳体分支的旁路的二冲程发动机
公开(公告)号：US06401673B2
公开(公告)日：2002-06-11
申请号：US09795392
申请日：2001-03-01
申请人： Peter Linsbauer , Lars Bergmann , Heiko Rosskamp , Reinhard Gerhardy
发明人： Peter Linsbauer , Lars Bergmann , Heiko Rosskamp , Reinhard Gerhardy
IPC分类号： F02B2520
CPC分类号： F02B63/02 , F02B25/20 , F02B2075/025
摘要： The invention relates to a two-stroke engine for a portable handheld work apparatus such as a motor chain saw. The combustion chamber (3), which is configured in a cylinder (2), is delimited by a piston (5) which drives a crankshaft (7) rotatably journalled in a crankcase (4). The crankcase (4) is connected to the combustion chamber (3) via a transfer channel (14). A first end (20) of the transfer channel (14) opens into the combustion chamber (3) via an entry window (12, 15) lying in the cylinder wall (16); whereas, the second end (19) of this transfer channel (14) is open toward the crankcase (4). The transfer channel (14) is connected between its ends (19, 20) to an air channel (22a, 22b) via a check valve (21). The air channel (22a, 22b) supplies essentially fuel-free gas via a throttle (31) having an adjustable throttle element (33). A mixture-preparation device (8) is provided for the air/fuel mixture downstream of an air filter (42) in the flow direction of the combustion air. The air/fuel mixture is supplied via an inlet (11) to the crankcase (4). In order to meter clean air to the air channels in a controlled manner, an adjustable throttle element (33) is mounted in a throttle channel (36) of an independent throttle housing (31) and the throttle channel (36) is connected upstream of the throttle element to the clean space (51) of the air filter (42) connected ahead of the mixture-preparation device (8).
摘要翻译：本发明涉及一种用于诸如电动链锯的便携式手持式工作装置的二冲程发动机。构造在气缸（2）中的燃烧室（3）由驱动曲轴（7）的活塞（5）限定，所述曲轴（7）可旋转地轴颈安装在曲轴箱（4）中。曲轴箱（4）通过传送通道（14）连接到燃烧室（3）。传送通道（14）的第一端（20）经由位于气缸壁（16）中的进入窗（12,15）进入燃烧室（3）。而传送通道（14）的第二端（19）朝向曲轴箱（4）打开。传送通道（14）通过止回阀（21）连接到其端部（19,20）与空气通道（22a，22b）之间。空气通道（22a，22b）经由具有可调节节流元件（33）的节气门（31）供给基本上无燃料的气体。在燃烧空气的流动方向上为空气过滤器（42）下游的空气/燃料混合物提供混合物制备装置（8）。空气/燃料混合物通过入口（11）供应到曲轴箱（4）。为了以可控的方式将清洁空气计量到空气通道，可调整节流元件（33）安装在独立节气门壳体（31）的节流通道（36）中，并且节气门通道（36）连接到节流元件连接到混合物制备装置（8）前面的空气过滤器（42）的清洁空间（51）。

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