公开(公告)号：US07077632B2

公开(公告)日：2006-07-18

申请号：US10703514

申请日：2003-11-10

申请人： Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt

发明人： Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt

IPC分类号： F04B35/00

CPC分类号： F04D25/02 ,  F04D27/003

摘要： A blower (1) has a housing (10) to which a blower pipe (2) may be removably connected. An internal combustion engine located within the housing (10) drives a blower wheel. The blower wheel, in turn, generates an air flow (11) within the blower pipe. To reduce the exhaust gases and the fuel consumption during idle operation of the combustion engine, a reduction device (12, 22), located in the blower pipe downstream of the blower wheel reduces the clear cross section of flow during idle operation of the engine.

摘要翻译： 鼓风机（1）具有壳体（10），鼓风机管道（2）可拆卸地连接在该壳体上。 位于壳体（10）内部的内燃机驱动鼓风机轮。 鼓风机轮又在鼓风机管道内产生气流（11）。 为了减少内燃机的怠速运转期间的排气和燃料消耗，位于鼓风机叶轮下游的鼓风机管道中的减速装置（12,22）在发动机怠速运转期间减小了流动的清晰横截面。

公开(公告)号：US07017537B2

公开(公告)日：2006-03-28

申请号：US10759003

申请日：2004-01-20

申请人： Gerhard Osburg ,  Wolfgang Luithardt ,  Simon Jug

发明人： Gerhard Osburg ,  Wolfgang Luithardt ,  Simon Jug

IPC分类号： F02M25/08

CPC分类号： F02B25/24 ,  F02B25/04 ,  F02B25/14 ,  F02B33/04 ,  F02B75/16 ,  F02B2075/025 ,  F02M19/02 ,  F02M23/03 ,  F02M31/14 ,  F02M31/18 ,  F02M69/10 ,  F02M69/24 ,  Y02T10/126 ,  Y02T10/146

摘要： A two-stroke engine (1) is especially for a handheld work apparatus such as a motor-driven chain saw, a cutoff machine or the like and has a cylinder (2) wherein a combustion chamber (3) is formed. The combustion chamber (3) is delimited by a reciprocating piston (5). The piston (5) drives a crankshaft (7) via a connecting rod (6). The crankshaft (7) is rotatably journalled in the crankcase (4). The combustion chamber (3) is connected to the crankcase (4) at pregiven piston positions via at least one transfer channel (11). The combustion chamber (3) has an outlet (10) for exhaust gases. An air channel (9) is provided which conducts combustion air into the crankcase (4) and a throttle element is mounted in the air channel (9). A compact configuration of the two-stroke engine (1) can be achieved when a separate fuel inlet (13) is provided in the crankcase (4) which is fed by a fuel metering system (15). The fuel metering system (15) has means for supplying fuel in dependence upon the position of the throttle element and/or in dependence upon the engine rpm. A method for operating the two-stroke engine (1) provides that the fuel is prepared to an air/fuel mixture in the crankcase (4) with the combustion air supplied via the air inlet (14).

摘要翻译： 二冲程发动机（1）特别适用于诸如电动链锯，切断机等的手持式工作装置，并且具有形成有燃烧室（3）的气缸（2）。 燃烧室（3）由往复活塞（5）限定。 活塞（5）通过连杆（6）驱动曲轴（7）。 曲轴（7）可旋转地支承在曲轴箱（4）中。 燃烧室（3）经由至少一个传送通道（11）在预定的活塞位置处连接到曲轴箱（4）。 燃烧室（3）具有用于废气的出口（10）。 设置有空气通道（9），其将燃烧空气传导到曲轴箱（4）中，并且节流元件安装在空气通道（9）中。 当在由燃料计量系统（15）供给的曲轴箱（4）中设置单独的燃料入口（13）时，可以实现二冲程发动机（1）的紧凑结构。 燃料计量系统（15）具有根据节流元件的位置和/或依赖于发动机转速来供应燃料的装置。 用于操作二冲程发动机（1）的方法提供了通过空气入口（14）供应的燃烧空气来将燃料准备到曲轴箱（4）中的空气/燃料混合物。

公开(公告)号：US07331314B2

公开(公告)日：2008-02-19

申请号：US11302766

申请日：2005-12-14

申请人： Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt ,  Tommy Roitsch ,  Michael Joos

发明人： Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt ,  Tommy Roitsch ,  Michael Joos

IPC分类号： F02B33/04

CPC分类号： F02D9/02 ,  F02B25/14 ,  F02B25/22 ,  F02B2075/025 ,  F02D2009/0208 ,  F02D2009/0272

摘要： A two-stroke engine has a cylinder with a combustion chamber that is delimited by a reciprocating piston that drives with a connecting rod a crankshaft rotatably supported in a crankcase. In predetermined positions of the piston, the crankcase is connected by at least one transfer channel to the combustion chamber. The two-stroke engine has a mixture channel for supplying a fuel/air mixture and an air channel that supplies substantially fuel-free air to the transfer channel. In order to provide a simple adjustment of the air channel to different two-stroke engines of a model range, a component in which the air channel is formed has a throttle member that is arranged at an end face of the component. The throttle member throttles the air flow through the air channel in at least one operating state of the two-stroke engine.

摘要翻译： 二冲程发动机具有一个具有燃烧室的气缸，该气缸由一个往复运动的活塞限定，往复活塞用连杆驱动，曲轴可旋转地支撑在曲轴箱中。 在活塞的预定位置，曲轴箱通过至少一个传送通道连接到燃烧室。 二冲程发动机具有用于供应燃料/空气混合物的混合通道和向输送通道提供基本上无燃料的空气的空气通道。 为了将空气通道简单地调整到模型范围的不同的二冲程发动机，其中形成空气通道的部件具有布置在部件的端面处的节流部件。 节气门构件在二冲程发动机的至少一个操作状态下节流通过空气通道的空气流。

公开(公告)号：US20050166897A1

公开(公告)日：2005-08-04

申请号：US10664155

申请日：2003-09-17

申请人： Gerhard Osburg ,  Wolfgang Luithardt

发明人： Gerhard Osburg ,  Wolfgang Luithardt

IPC分类号： F01L13/08 ,  F02M1/08 ,  F02M1/14

CPC分类号： F02M1/08 ,  F01L13/08

摘要： A two-stroke engine has an intake channel via which the engine (1) is supplied with an air/fuel mixture prepared in a carburetor (12). The engine also has a starting device (19, 40) for enrichment of the air/fuel mixture during the start operation. The starting device (19, 40) is disposed in the region of the carburetor (12). To avoid an overenrichment of the mixture after start-up of the engine, a bypass channel (20) is provided which branches off upstream of the starting device (19, 40) viewed in the flow direction (30) of the air/fuel mixture and opens downstream of the starting device (19, 40). A switching valve (23) is mounted in the bypass channel (20) and is essentially closed when the engine (1) is started. When the engine (1) runs up, the switching valve (23) automatically switches into a position where less throttling occurs.

摘要翻译： 二冲程发动机具有进气通道，发动机（1）通过该进气通道供应在化油器（12）中制备的空气/燃料混合物。 发动机还具有用于在启动操作期间浓缩空气/燃料混合物的启动装置（19,40）。 起动装置（19,40）设置在化油器（12）的区域中。 为了避免在发动机起动之后混合物的过度富集，提供旁路通道（20），其沿着空气/燃料混合物的流动方向（30）观察到的起始装置（19,40）的上游分支 并且在起动装置（19,40）的下游开口。 开关阀（23）安装在旁通通道（20）中，并且当发动机（1）启动时基本上关闭。 当发动机（1）向上运动时，切换阀（23）自动切换到发生较少节流的位置。

公开(公告)号：US20050072388A1

公开(公告)日：2005-04-07

申请号：US10948226

申请日：2004-09-24

申请人： Gerhard Osburg ,  Wolfgang Luithardt

发明人： Gerhard Osburg ,  Wolfgang Luithardt

IPC分类号： F02B25/14 ,  F02B25/16 ,  F02B25/20 ,  F02B75/02

CPC分类号： F02B25/14 ,  F02B25/20 ,  F02B2075/025

摘要： A two-stroke engine (1) has a combustion chamber (3) configured in a cylinder (2). The combustion chamber (3) is delimited by a reciprocating piston (5) and drives a crankshaft (7) which is rotatably journalled in a crankcase (4). The two-stroke engine (1) has an outlet (10) out of the combustion chamber (3) and at least one transfer channel (12, 15) which connects the crankcase (4) to the combustion chamber (3) at pregiven piston positions. The transfer channels (12, 15) open with transfer windows (13, 16) into the combustion chamber (3). To obtain a good start and good idle performance and low exhaust-gas values, an ancillary channel (14) is provided which is connected into the combustion chamber (3) at one end (37) and into the transfer channel (15) with the other end (36). During operation, the ancillary channel (14) opens into the combustion chamber (3) during the downward stroke of the piston (5) while the transfer window (16) to the combustion chamber (3) is still closed.

摘要翻译： 二冲程发动机（1）具有构造在气缸（2）中的燃烧室（3）。 燃烧室（3）由往复活塞（5）限定，驱动曲轴（7），该曲轴（7）可旋转地支承在曲轴箱（4）中。 二冲程发动机（1）具有从燃烧室（3）出口的出口（10）和至少一个传递通道（12,15），其在预定活塞处将曲轴箱（4）连接到燃烧室（3） 职位 传送通道（12,15）打开，传送窗口（13,16）进入燃烧室（3）。 为了获得良好的起动和良好的怠速性能和低排气值，提供了辅助通道（14），其在一端（37）处连接到燃烧室（3）中并且与传导通道（15）连接 另一端（36）。 在操作期间，在活塞（5）的向下冲程期间，辅助通道（14）进入燃烧室（3），而到燃烧室（3）的转移窗口（16）仍然是关闭的。

公开(公告)号：US06799555B2

公开(公告)日：2004-10-05

申请号：US09987767

申请日：2001-11-15

申请人： Wolfgang Luithardt ,  Maximilian Eberhardt ,  Markus Hüsges ,  Christian Ante ,  Jens Heine

发明人： Wolfgang Luithardt ,  Maximilian Eberhardt ,  Markus Hüsges ,  Christian Ante ,  Jens Heine

IPC分类号： F02D1104

CPC分类号： F02D11/02 ,  F02B63/02 ,  F02B2075/027

摘要： The invention is directed to an adjusting device for a throttle pull of an internal combustion engine for a portable handheld work apparatus. A pull wire (11) of the throttle pull acts on the carburetor (4) of the engine. The carburetor (4) is attached to the inlet of the engine with a spacer (6) disposed therebetween. A tension piece (5) of the adjusting device is pivotally journalled on the spacer (6) by a bolt. The pull wire (11) lies with a segment thereof on the outwardly pivotable arm of the tension piece (5). The position of the tension piece can be adjusted with the adjusting screw (14). The adjusting screw can be screwed out of the pivot arm axially in the direction toward a support. The tension piece (5) is configured as one piece with the bolt (12) and is securely held with a form-tight holding arrangement in the axial direction of the bolt (12). The adjusting device is cost-effective and provides for a reliable and precise adjustment.

公开(公告)号：US07228843B2

公开(公告)日：2007-06-12

申请号：US10664155

申请日：2003-09-17

申请人： Gerhard Osburg ,  Wolfgang Luithardt

发明人： Gerhard Osburg ,  Wolfgang Luithardt

IPC分类号： F02M1/14

CPC分类号： F02M1/08 ,  F01L13/08

摘要： A two-stroke engine has an intake channel via which the engine (1) is supplied with an air/fuel mixture prepared in a carburetor (12). The engine also has a starting device (19, 40) for enrichment of the air/fuel mixture during the start operation. The starting device (19, 40) is disposed in the region of the carburetor (12). To avoid an overenrichment of the mixture after start-up of the engine, a bypass channel (20) is provided which branches off upstream of the starting device (19, 40) viewed in the flow direction (30) of the air/fuel mixture and opens downstream of the starting device (19, 40). A switching valve (23) is mounted in the bypass channel (20) and is essentially closed when the engine (1) is started. When the engine (1) runs up, the switching valve (23) automatically switches into a position where less throttling occurs.

摘要翻译： 二冲程发动机具有进气通道，发动机（1）通过该进气通道供应在化油器（12）中制备的空气/燃料混合物。 发动机还具有用于在启动操作期间浓缩空气/燃料混合物的启动装置（19,40）。 起动装置（19,40）设置在化油器（12）的区域中。 为了避免在发动机起动之后混合物的过度富集，提供旁路通道（20），其沿着空气/燃料混合物的流动方向（30）观察到的起始装置（19,40）的上游分支 并且在起动装置（19,40）的下游开口。 开关阀（23）安装在旁通通道（20）中，并且当发动机（1）启动时基本上关闭。 当发动机（1）向上运动时，切换阀（23）自动切换到发生较少节流的位置。

公开(公告)号：US20060180106A1

公开(公告)日：2006-08-17

申请号：US11302766

申请日：2005-12-14

申请人： Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt ,  Tommy Roitsch ,  Michael Joos

发明人： Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt ,  Tommy Roitsch ,  Michael Joos

IPC分类号： F02B33/04

CPC分类号： F02D9/02 ,  F02B25/14 ,  F02B25/22 ,  F02B2075/025 ,  F02D2009/0208 ,  F02D2009/0272

摘要： A two-stroke engine has a cylinder in which a combustion chamber is provided. The combustion chamber is delimited by a reciprocating piston that drives with a connecting rod a crankshaft rotatably supported in a crankcase. In predetermined positions of the piston, the crankcase is connected by at least one transfer channel to the combustion chamber. The two-stroke engine has a mixture channel for supplying a fuel/air mixture and an air channel that supplies substantially fuel-free air to the transfer channel. In order to enable in a simple way an adjustment of an air channel to different two-stroke engines of a model range, at one end face of a component in which the air channel is formed a throttle member is arranged that throttles the air flow through the air channel in at least one operating state of the two-stroke engine.

摘要翻译： 二冲程发动机具有设置有燃烧室的气缸。 燃烧室由一个往复运动的活塞限定，该往复活塞用连杆驱动，曲轴可旋转地支撑在曲轴箱中。 在活塞的预定位置，曲轴箱通过至少一个传送通道连接到燃烧室。 二冲程发动机具有用于供应燃料/空气混合物的混合通道和向输送通道提供基本上无燃料的空气的空气通道。 为了简单地使空气通道能够在模型范围的不同二冲程发动机上的调节，在形成空气通道的部件的一个端面处布置有节流构件，其节流空气流通过 在二冲程发动机的至少一个操作状态下的空气通道。

公开(公告)号：US06976458B2

公开(公告)日：2005-12-20

申请号：US10948226

申请日：2004-09-24

申请人： Gerhard Osburg ,  Wolfgang Luithardt

发明人： Gerhard Osburg ,  Wolfgang Luithardt

IPC分类号： F02B25/14 ,  F02B25/16 ,  F02B25/20 ,  F02B75/02 ,  F02B33/04

CPC分类号： F02B25/14 ,  F02B25/20 ,  F02B2075/025

摘要： A two-stroke engine (1) has a combustion chamber (3) configured in a cylinder (2). The combustion chamber (3) is delimited by a reciprocating piston (5) and drives a crankshaft (7) which is rotatably journalled in a crankcase (4). The two-stroke engine (1) has an outlet (10) out of the combustion chamber (3) and at least one transfer channel (12, 15) which connects the crankcase (4) to the combustion chamber (3) at pregiven piston positions. The transfer channels (12, 15) open with transfer windows (13, 16) into the combustion chamber (3). To obtain a good start and good idle performance and low exhaust-gas values, an ancillary channel (14) is provided which is connected into the combustion chamber (3) at one end (37) and into the transfer channel (15) with the other end (36). During operation, the ancillary channel (14) opens into the combustion chamber (3) during the downward stroke of the piston (5) while the transfer window (16) to the combustion chamber (3) is still closed.

摘要翻译： 二冲程发动机（1）具有构造在气缸（2）中的燃烧室（3）。 燃烧室（3）由往复活塞（5）限定，驱动曲轴（7），该曲轴（7）可旋转地支承在曲轴箱（4）中。 二冲程发动机（1）具有从燃烧室（3）出口的出口（10）和至少一个传递通道（12,15），其在预定活塞处将曲轴箱（4）连接到燃烧室（3） 职位 传送通道（12,15）打开，传送窗口（13,16）进入燃烧室（3）。 为了获得良好的起动和良好的怠速性能和低排气值，提供了辅助通道（14），其在一端（37）处连接到燃烧室（3）中并且与传导通道（15）连接 另一端（36）。 在操作期间，在活塞（5）的向下冲程期间，辅助通道（14）进入燃烧室（3），而到燃烧室（3）的转移窗口（16）仍然是关闭的。

公开(公告)号：US06595500B2

公开(公告)日：2003-07-22

申请号：US10127496

申请日：2002-04-23

申请人： Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt ,  Reinhard Gerhardy

发明人： Gerhard Osburg ,  Wolfgang Luithardt ,  Peter Schmidt ,  Reinhard Gerhardy

IPC分类号： F02M708

CPC分类号： F02M7/08 ,  F02B63/02 ,  F02M17/04 ,  F02M37/16 ,  F02M37/20 ,  Y10S261/08 ,  Y10S261/68

摘要： A membrane carburetor for an internal combustion engine in a portable handheld work apparatus includes a control chamber (3) delimited by a membrane (2). The control chamber (3) is connected via a feed line (4) to a fuel tank (5). The feed line (4) is cleared via a valve body (6) when there is a deflection of the membrane (2) because of an underpressure in the control chamber (3). The control chamber (3) is connected to an air channel (10) via at least one fuel nozzle (7) and at least one ancillary chamber (9). The air channel (10) passes through the membrane carburetor (1) and leads to the internal combustion engine. A purge pump (11) is provided in a fuel line (12) connecting the control chamber (3) to the fuel tank (5). The fuel path between the control chamber (3) and the purge pump (11) is guided through at least one ancillary chamber (9).

摘要翻译： 用于便携式手持式工作装置中的内燃机的膜式化油器包括由膜（2）限定的控制室（3）。 控制室（3）经由进料管线（4）连接到燃料箱（5）。 当由于控制室（3）中的负压而存在膜（2）的偏转时，馈送线（4）通过阀体（6）而被清除。 控制室（3）经由至少一个燃料喷嘴（7）和至少一个辅助室（9）连接到空气通道（10）。 空气通道（10）穿过膜化油器（1）并通向内燃机。 在将控制室（3）连接到燃料箱（5）的燃料管路（12）中设置有净化泵（11）。 控制室（3）和净化泵（11）之间的燃料路径被引导通过至少一个辅助室（9）。