公开(公告)号：US20080120951A1

公开(公告)日：2008-05-29

申请号：US11946464

申请日：2007-11-28

申请人： Shigeru Sato ,  Kunimune Kawamura ,  Hidekazu Tsunoda ,  Kazuhiro Tsutsui

发明人： Shigeru Sato ,  Kunimune Kawamura ,  Hidekazu Tsunoda ,  Kazuhiro Tsutsui

IPC分类号： B01D46/00

CPC分类号： B01D46/0002 ,  B01D2279/60 ,  F02B25/22 ,  F02B27/003 ,  F02B27/005 ,  F02B27/0215 ,  F02B27/0236 ,  F02B33/04 ,  F02B33/44 ,  F02M17/34 ,  F02M19/00 ,  F02M35/02 ,  F02M35/024 ,  F02M35/04 ,  F02M35/1017 ,  F02M35/1019 ,  F02M35/10196 ,  F02M35/108 ,  Y02T10/146 ,  Y10S55/28

摘要： An air cleaner is used in a two-stroke internal combustion engine to supply an air-fuel mixture passage and a fresh air passage in a carburetor with air cleaned by an air cleaner element. The air cleaner includes an air cleaner base having an air-fuel mixture opening communicating with the air-fuel mixture passage and a fresh air opening communicating with the fresh air passage, and an air guide member provided at the air-fuel mixture opening. The air guide member is configured to curve near the air-fuel mixture opening and extend from there along the air cleaner base, and has a cross section surrounded by a peripheral wall. The air guide member defines a mixture-use air extension passage for air to be added to prepare an air-fuel mixture air-fuel mixture, which extends from a first clean air intake to the air-fuel mixture opening. Blown-back gas from the air-fuel mixture passage hits against the inner wall of the curved portion of the air guide member, and is therefore restricted to flow out of the first clean air intake and leak into the air cleaner. Thereby, harmful emissions in the exhaust gas from the two-stroke internal engine can be reduced.

摘要翻译： 在二冲程内燃机中使用空气净化器，以将空气 - 燃料混合物通道和新鲜空气通道提供在化油器中，其中空气被空气净化器元件清洁。 空气滤清器包括具有与空气 - 燃料混合物通道连通的空气燃料混合物开口和与新鲜空气通道连通的新鲜空气开口的空气滤清器基座，以及设置在空气 - 燃料混合物开口处的空气引导构件。 空气引导构件构造成在空气 - 燃料混合物开口附近弯曲并沿着空气滤清器基座从那里延伸，并且具有被周壁包围的横截面。 空气引导构件限定用于添加的空气的混合物用空气延伸通道，以制备从第一清洁空气入口延伸到空气 - 燃料混合物开口的空气 - 燃料混合物空气 - 燃料混合物。 来自空气燃料混合物通道的吹回气体撞击空气引导构件的弯曲部分的内壁，因此被限制为从第一清洁空气入口流出并泄漏到空气净化器中。 由此，能够减少来自二冲程内燃机的废气中的有害排放物。

公开(公告)号：US07857881B2

公开(公告)日：2010-12-28

申请号：US11946464

申请日：2007-11-28

申请人： Shigeru Sato ,  Kunimune Kawamura ,  Hidekazu Tsunoda ,  Kazuhiro Tsutsui

发明人： Shigeru Sato ,  Kunimune Kawamura ,  Hidekazu Tsunoda ,  Kazuhiro Tsutsui

IPC分类号： B01D46/00

CPC分类号： B01D46/0002 ,  B01D2279/60 ,  F02B25/22 ,  F02B27/003 ,  F02B27/005 ,  F02B27/0215 ,  F02B27/0236 ,  F02B33/04 ,  F02B33/44 ,  F02M17/34 ,  F02M19/00 ,  F02M35/02 ,  F02M35/024 ,  F02M35/04 ,  F02M35/1017 ,  F02M35/1019 ,  F02M35/10196 ,  F02M35/108 ,  Y02T10/146 ,  Y10S55/28

摘要： An air cleaner is used in a two-stroke internal combustion engine to supply an air-fuel mixture passage and a fresh air passage in a carburetor with air cleaned by an air cleaner element. The air cleaner includes an air cleaner base having an air-fuel mixture opening communicating with the air-fuel mixture passage and a fresh air opening communicating with the fresh air passage, and an air guide member provided at the air-fuel mixture opening. The air guide member is configured to curve near the air-fuel mixture opening and extend from there along the air cleaner base, and has a cross section surrounded by a peripheral wall. The air guide member defines a mixture-use air extension passage for air to be added to prepare an air-fuel mixture air-fuel mixture, which extends from a first clean air intake to the air-fuel mixture opening. Blown-back gas from the air-fuel mixture passage hits against the inner wall of the curved portion of the air guide member, and is therefore restricted to flow out of the first clean air intake and leak into the air cleaner. Thereby, harmful emissions in the exhaust gas from the two-stroke internal engine can be reduced.

摘要翻译： 在二冲程内燃机中使用空气净化器，以将空气 - 燃料混合物通道和新鲜空气通道提供在化油器中，其中空气被空气净化器元件清洁。 空气滤清器包括具有与空气 - 燃料混合物通道连通的空气 - 燃料混合物开口和与新鲜空气通道连通的新鲜空气开口的空气滤清器基座，以及设置在空气 - 燃料混合物开口处的空气引导构件。 空气引导构件构造成在空气 - 燃料混合物开口附近弯曲并沿着空气滤清器基座从那里延伸，并且具有被周壁包围的横截面。 空气引导构件限定用于添加的空气的混合物用空气延伸通道，以制备从第一清洁空气入口延伸到空气 - 燃料混合物开口的空气 - 燃料混合物空气 - 燃料混合物。 来自空气燃料混合物通道的吹回气体撞击空气引导构件的弯曲部分的内壁，因此被限制为从第一清洁空气入口流出并泄漏到空气净化器中。 由此，能够减少来自二冲程内燃机的废气中的有害排放物。

公开(公告)号：US07182059B2

公开(公告)日：2007-02-27

申请号：US11166129

申请日：2005-06-27

申请人： Kunimune Kawamura ,  Tatsumi Uejima

发明人： Kunimune Kawamura ,  Tatsumi Uejima

IPC分类号： F01M1/02

CPC分类号： B27B17/12

摘要： An oil pump mechanism is incorporated in a chain saw having a centrifugal clutch and a saw chain adapted to be driven through the centrifugal clutch and activated in synchronization with the centrifugal clutch to supply a lubricating oil to the saw chain. The mechanism includes a crankshaft, a clutch shoe being mounted on the centrifugal clutch and being connected in driven relation to the crankshaft, a clutch drum disposed coaxially around the crankshaft, a worm fitted on the crankshaft by insertion in a freely rotatable manner and connected in driven relation to the clutch drum to be integrally rotated with the clutch drum, a driven gear engaged with the worm, and a movable pumping element for pumping the lubricating oil. The worm has an inner portion located opposed to the crankshaft and an outer portion including a tooth region. The inner portion is made of self-lubricating resin and the outer portion is made of wear-resistant metal.

摘要翻译： 油泵机构结合在具有离心离合器和锯链的链锯中，该链锯适于被驱动通过离心式离合器，并且与离心式离合器同步地启动以向锯链提供润滑油。 该机构包括曲轴，离合器踏板安装在离心式离合器上并以驱动方式连接到曲轴，离合器鼓同轴地设置在曲轴周围，通过以可自由旋转的方式插入并连接在曲轴上的蜗杆 与离合器鼓的驱动关系与离合器鼓一体地旋转，与蜗杆啮合的从动齿轮和用于泵送润滑油的可动泵送元件。 蜗杆具有与曲轴相对的内部部分和包括齿区域的外部部分。 内部由自润滑树脂制成，外部由耐磨金属制成。

公开(公告)号：US07322114B2

公开(公告)日：2008-01-29

申请号：US11167128

申请日：2005-06-28

申请人： Kunimune Kawamura

发明人： Kunimune Kawamura

IPC分类号： B27B17/14

CPC分类号： B27B17/14

摘要： A saw chain tensioning mechanism for adjusting the tension in a saw chain extending around a chain guide plate includes a threaded rod member disposed adjacent to a rear end of the chain guide plate and along the longitudinal direction of the chain guide plate, a movable member engaged with the chain guide plate and adapted to be moved along the threaded rod member by a rotation of the threaded rod member, and a driving gear integral with the threaded rod member. The tensioning mechanism includes a driving gear for rotatively driving the driving gear and an operating member for manually rotating the driving gear. Manipulating the operating member changes the longitudinal position of the chain guide plate and correspondingly causes a change in a tension of the saw chain.

摘要翻译： 用于调节围绕链条引导板延伸的锯链中的张力的锯链张紧机构包括：与链条引导板的后端相邻并且沿着链条导向板的纵向方向设置的螺纹杆构件，可动构件接合 具有链条导向板并且适于通过螺杆的构件的旋转而沿着螺纹杆构件移动，以及与螺纹杆构件成一体的驱动齿轮。 张紧机构包括用于旋转驱动驱动齿轮的驱动齿轮和用于手动旋转驱动齿轮的操作构件。 操纵操作构件改变了链条引导板的纵向位置，并相应地引起了锯链的张力变化。

公开(公告)号：US20060000098A1

公开(公告)日：2006-01-05

申请号：US11167128

申请日：2005-06-28

申请人： Kunimune Kawamura

发明人： Kunimune Kawamura

IPC分类号： B23D57/02

CPC分类号： B27B17/14

摘要： A saw chain tensioning mechanism for adjusting the tension in a saw chain extending around a chain guide plate includes a threaded rod member disposed adjacent to a rear end of the chain guide plate and along the longitudinal direction of the chain guide plate, a movable member engaged with the chain guide plate and adapted to be moved along the threaded rod member by a rotation of the threaded rod member, and a driving gear integral with the threaded rod member. The tensioning mechanism includes a driving gear for rotatively driving the driving gear and an operating member for manually rotating the driving gear. Manipulating the operating member changes the longitudinal position of the chain guide plate and correspondingly causes a change in a tension of the saw chain.

摘要翻译： 用于调节围绕链条引导板延伸的锯链中的张力的锯链张紧机构包括：与链条引导板的后端相邻并且沿着链条导向板的纵向方向设置的螺纹杆构件，可动构件接合 具有链条导向板并且适于通过螺杆的构件的旋转而沿着螺纹杆构件移动，以及与螺纹杆构件成一体的驱动齿轮。 张紧机构包括用于旋转驱动驱动齿轮的驱动齿轮和用于手动旋转驱动齿轮的操作构件。 操纵操作构件改变了链条引导板的纵向位置，并相应地引起了锯链的张力变化。

公开(公告)号：US08746192B2

公开(公告)日：2014-06-10

申请号：US13010860

申请日：2011-01-21

申请人： Kunimune Kawamura

发明人： Kunimune Kawamura

IPC分类号： F02B25/00

CPC分类号： F02B25/22 ,  F02B25/14 ,  F02B2075/025 ,  F02F3/24

摘要： In a two-stroke internal combustion engine using air for scavenging its combustion chamber (4), a scavenging passage (6) communicating with a crankcase (2) and a combustion chamber (4) is charged first with rich air-fuel mixture generated by a carburetor, next with lean air-fuel mixture, and next with air through an in-piston passage (36). The lean air-fuel mixture is generated in the in-piston passage 36 by diluting the air-fuel mixture with the air. In each scavenging stroke to scavenge the combustion chamber (4), the combustion chamber (4) is supplied first with the air (40) and next with the lean air-fuel mixture (42) from the scavenging passage (6). The use of the lean-air-fuel mixture (42) next to the air (40) contributes to reduce acceleration failure or engine stop caused by sudden acceleration.

摘要翻译： 在使用空气清扫其燃烧室（4）的二冲程内燃机中，首先将与曲轴箱（2）和燃烧室（4）连通的扫气通道（6）充满浓缩的空气 - 燃料混合物 化油器，接下来是稀薄的空气燃料混合物，接下来是空气通过活塞通道（36）。 通过用空气稀释空气 - 燃料混合物，在活塞通道36中产生贫空气混合物。 在每个清扫行程中，为了清除燃烧室（4），首先向燃烧室（4）供应空气（40），接下来从供气通道（6）供给贫空燃料混合物（42）。 在空气（40）旁边使用稀空燃料混合物（42）有助于减少由突然加速引起的加速度故障或发动机停止。

公开(公告)号：US08225776B2

公开(公告)日：2012-07-24

申请号：US12461656

申请日：2009-08-19

申请人： Kunimune Kawamura ,  Masato Nara

发明人： Kunimune Kawamura ,  Masato Nara

IPC分类号： F02P3/02 ,  F01P1/00

CPC分类号： B27B17/00

摘要： A power unit for portable chain saws wherein an ignition coil is placed at a position so as to increase both the compactness and the cooling efficiency of the power unit.A coil support on which the ignition coil is supported is formed integratedly with a crank case; adjacent to an open port; and on a part of an external periphery of the flywheel, said second part being not enclosed by the air-guiding passage.The coil support extends from the crank case along a side of a muffler and forms an insulating gap from the muffler.

摘要翻译： 一种用于便携式链锯的动力单元，其中将点火线圈放置在一个位置上，以增加动力单元的紧凑性和冷却效率。 点火线圈支撑的线圈支架与曲轴箱一体形成; 毗邻开放港口; 并且在所述飞轮的外周的一部分上，所述第二部分不被所述引导通道封闭。 线圈支撑件从曲轴箱沿着消声器的一侧延伸，与消音器形成绝缘间隙。

公开(公告)号：US20110180054A1

公开(公告)日：2011-07-28

申请号：US13010860

申请日：2011-01-21

申请人： Kunimune Kawamura

发明人： Kunimune Kawamura

IPC分类号： F02B33/04

CPC分类号： F02B25/22 ,  F02B25/14 ,  F02B2075/025 ,  F02F3/24

摘要： In a two-stroke internal combustion engine using air for scavenging its combustion chamber (4), a scavenging passage (6) communicating with a crankcase (2) and a combustion chamber (4) is charged first with rich air-fuel mixture generated by a carburetor, next with lean air-fuel mixture, and next with air through an in-piston passage (36). The lean air-fuel mixture is generated in the in-piston passage 36 by diluting the air-fuel mixture with the air. In each scavenging stroke to scavenge the combustion chamber (4), the combustion chamber (4) is supplied first with the air (40) and next with the lean air-fuel mixture (42) from the scavenging passage (6). The use of the lean-air-fuel mixture (42) next to the air (40) contributes to reduce acceleration failure or engine stop caused by sudden acceleration.

摘要翻译： 在使用空气清扫其燃烧室（4）的二冲程内燃机中，首先将与曲轴箱（2）和燃烧室（4）连通的扫气通道（6）充满浓缩的空气 - 燃料混合物 化油器，接下来是稀薄的空气燃料混合物，接下来是空气通过活塞通道（36）。 通过用空气稀释空气 - 燃料混合物，在活塞通道36中产生贫空气混合物。 在每个清扫行程中，为了清除燃烧室（4），首先向燃烧室（4）供应空气（40），接下来从供气通道（6）供给贫空燃料混合物（42）。 在空气（40）旁边使用稀空燃料混合物（42）有助于减少由突然加速引起的加速度故障或发动机停止。

公开(公告)号：US20060000097A1

公开(公告)日：2006-01-05

申请号：US11166129

申请日：2005-06-27

申请人： Kunimune Kawamura ,  Tatsumi Uejima

发明人： Kunimune Kawamura ,  Tatsumi Uejima

IPC分类号： B23D59/04 ,  F16N13/00

CPC分类号： B27B17/12

摘要： An oil pump mechanism is incorporated in a chain saw having a centrifugal clutch and a saw chain adapted to be driven through the centrifugal clutch and activated in synchronization with the centrifugal clutch to supply a lubricating oil to the saw chain. The mechanism includes a crankshaft, a clutch shoe being mounted on the centrifugal clutch and being connected in driven relation to the crankshaft, a clutch drum disposed coaxially around the crankshaft, a worm fitted on the crankshaft by insertion in a freely rotatable manner and connected in driven relation to the clutch drum to be integrally rotated with the clutch drum, a driven gear engaged with the worm, and a movable pumping element for pumping the lubricating oil. The worm has an inner portion located opposed to the crankshaft and an outer portion including a tooth region. The inner portion is made of self-lubricating resin and the outer portion is made of wear-resistant metal.

摘要翻译： 油泵机构结合在具有离心离合器和锯链的链锯中，该链锯适于被驱动通过离心式离合器，并且与离心式离合器同步地启动以向锯链提供润滑油。 该机构包括曲轴，离合器踏板安装在离心式离合器上并以驱动方式连接到曲轴，离合器鼓同轴地设置在曲轴周围，通过以可自由旋转的方式插入并连接在曲轴上的蜗杆 与离合器鼓的驱动关系与离合器鼓一体地旋转，与蜗杆啮合的从动齿轮和用于泵送润滑油的可动泵送元件。 蜗杆具有与曲轴相对的内部部分和包括齿区域的外部部分。 内部由自润滑树脂制成，外部由耐磨金属制成。