公开(公告)号：US5197418A

公开(公告)日：1993-03-30

申请号：US940995

申请日：1992-09-04

申请人： Michael Wissmann ,  Hans Nickel ,  Ralf Tuckermann ,  Werner Geyer

发明人： Michael Wissmann ,  Hans Nickel ,  Ralf Tuckermann ,  Werner Geyer

IPC分类号： F02B63/02 ,  F02B75/02 ,  F02B75/12 ,  F02M59/10 ,  F02M59/20 ,  F02M59/30 ,  F02M67/02 ,  F02M69/10

CPC分类号： F02M69/10 ,  F02M59/107 ,  F02M59/30 ,  F02B2075/025 ,  F02B2075/125 ,  Y02T10/123

摘要： The invention is directed to a fuel injection pump for a two-stroke engine which is especially for portable handheld tools such as motor-driven chain saws or the like. A pneumatic drive chamber is provided in the pump housing which is partitioned by a membrane into a pulse chamber charged by the crankcase pressure and a return chamber. A membrane plate holds the membrane and charges a pump piston which plunges into a pump cylinder for injecting fuel when a pulse is present in the pulse chamber. The pump piston draws fuel in by suction during a return stroke of the membrane plate into a start position determined by a stop. The stop is configured so as to be displaceable in the direction of the stroke of the piston in dependence upon temperature in order to obtain an adaptation of the injected quantity of fuel to the operating temperature of the engine. In this way, the stroke of the pump piston can be varied and therefore also the quantity of fuel supplied by the pump.

摘要翻译： 本发明涉及用于二冲程发动机的燃料喷射泵，其特别适用于诸如电动链锯等便携式手持工具。 在泵壳体中设置气动驱动室，该壳体由膜分隔成由曲轴箱压力充电的脉冲室和回流室。 膜片保持膜并且当在脉冲室中存在脉冲时将泵活塞充入泵活塞，泵活塞用于喷射燃料。 泵活塞在膜片的返回行程期间通过抽吸将燃料吸入由停止确定的起始位置。 挡块被构造成可以根据温度在活塞的行程方向上移动，以便获得喷射量与发动机的工作温度的适应性。 以这种方式，泵活塞的行程可以变化，因此也可以由泵供给的燃料量。

公开(公告)号：US4919091A

公开(公告)日：1990-04-24

申请号：US369135

申请日：1989-06-21

申请人： Michael Wissmann ,  Harald Schleimann ,  Jurgen Weber

发明人： Michael Wissmann ,  Harald Schleimann ,  Jurgen Weber

IPC分类号： F02P11/04 ,  F02P1/08

CPC分类号： F02P1/08

摘要： The invention relates to an ignition switch arrangement for an internal combustion engine having electrical ignition. Engines for handheld portable tools are for the most part equipped with magneto ignition and are switched by short circuiting the ignition coil for bringing the engine to standstill. The ignition switch arrangement of the invention includes an ignition switching unit which is switchable between an ignition-enabling position wherein the ignition is operative and an ignition-disabling position wherein the ignition is inoperative. According to the invention, a latching actuator having a latch latches the ignition switch unit in the ignition-disabling position when the latching actuator is in its latching position when the ignition switch unit is switched into the ignition-disabling position while the engine is running. The latch releases automatically when the engine coasts to standstill so that the ignition is automatically enabled for the next starting operation.

摘要翻译： 本发明涉及一种具有电点火的内燃机的点火开关装置。 用于手持便携式工具的发动机大部分装备有磁点火，并通过短路点火线圈来切换，使发动机停滞。 本发明的点火开关装置包括点火开关单元，该点火开关单元可在点火操作的点火使能位置和点火不起作用的点火禁止位置之间切换。 根据本发明，当发动机运行时，当点火开关单元切换到点火禁止位置时，当闩锁致动器处于其闩锁位置时，具有闩锁的闩锁致动器将点火开关单元锁定在点火开关位置。 当发动机滑行停止时，闩锁自动释放，以便点火自动启用以进行下一次启动操作。

公开(公告)号：US4590896A

公开(公告)日：1986-05-27

申请号：US704083

申请日：1985-02-21

申请人： Michael Wissmann ,  Harald Schliemann

发明人： Michael Wissmann ,  Harald Schliemann

IPC分类号： F02B75/02 ,  F02D9/02 ,  F02D11/08 ,  F02D17/04 ,  F02D31/00 ,  F02B33/04

CPC分类号： F02D17/04 ,  F02D11/08 ,  F02D31/00 ,  F02D9/02 ,  F02B2075/025 ,  F02D2009/0203 ,  F02D2009/0208 ,  F02D2009/0267 ,  F02D2009/0286 ,  F02D2400/04

摘要： The invention is directed to a control system for a two-stroke engine for limiting a control quantity thereof such as the rotational speed. For this purpose, a pressure line including a valve is connected to the crankcase and leads to a pneumatic controlling member which is responsive to a mechanical or electrical signal (vibrations or electric pulse from the ignition system). By means of suitable transmission means, the movement of the controlling member is transmitted to the carburetor throttle, for example.

摘要翻译： 本发明涉及用于限制其控制量（例如转速）的二冲程发动机的控制系统。 为此，包括阀的压力管线连接到曲轴箱并且通向响应于机械或电信号（来自点火系统的振动或电脉冲）的气动控制构件。 通过适当的传动装置，控制构件的移动例如被传送到化油器节气门。

公开(公告)号：US4567658A

公开(公告)日：1986-02-04

申请号：US571476

申请日：1984-01-17

申请人： Michael Wissmann ,  Hans Nickel ,  Erich Zollner

发明人： Michael Wissmann ,  Hans Nickel ,  Erich Zollner

IPC分类号： B27B17/14

CPC分类号： B27B17/14 ,  Y10T83/7239

摘要： The invention is directed to a tensioning arrangement for adjusting the tension in the saw chain of a chain saw. The cutter bar for the saw chain has an elongated opening for engaging the guiding means upon which the cutter bar is displaceably mounted and guided in the housing of the chain saw. The tensioning arrangement includes a bolt-like drive member which extends through the elongated opening of the cutter bar and acts upon an output member via a transmission. The output member is configured as a slider which entrains the cutter bar for displacing the latter to tension the saw chain. The drive member extends through the elongated opening and beyond the housing as well as the cover of the sprocket wheel to the outside so that it can be adjusted conveniently and simply from outside of the housing for tensioning the saw chain.

摘要翻译： 本发明涉及一种用于调节链锯的锯链中的张力的张紧装置。 用于锯链的切割杆具有细长的开口，用于接合引导装置，在该引导装置上刀具杆可移动地安装并引导到链锯的壳体中。 张紧装置包括螺栓状驱动构件，其延伸穿过切割杆的细长开口并通过变速器作用在输出构件上。 输出构件被构造为滑块，该滑块夹住切割杆以使其移动以张紧锯链。 驱动构件延伸穿过细长的开口并且超过壳体以及链轮的盖子到外部，使得其可以从外壳的外部方便地简单地调节，以张紧锯链。

公开(公告)号：US4364362A

公开(公告)日：1982-12-21

申请号：US227867

申请日：1981-01-23

申请人： Michael Wissmann ,  Peter Stiefel

发明人： Michael Wissmann ,  Peter Stiefel

IPC分类号： F02D3/00 ,  F02M69/14 ,  F02M69/22 ,  F02M39/00

CPC分类号： F02M69/22

摘要： A metering and distribution valve assembly is proposed for a fuel injection system of an internal combustion engine. The metering and distribution valve assembly includes a control slide having a head 68 and a control edge and a slotted sleeve with at least two control slits. The control edge opens the control slits to a greater or lesser degree in accordance with the relative motion between the control slide and the control slits in the slotted sleeve. An end face of the control slide adjacent to the control edge is exposed to a control pressure which is lower than the system pressure engaging the control edge. The pressure drop at the circumference of the control slide head formed between the control edge and the end face is capable of being influenced in such a manner that the control slide head rests unilaterally on the slotted sleeve at least during a portion of the displacement movement. As a result, better metering precision is obtained. The unilateral resting of the control slide head on one side of the slide bore can be effected either by the application of fuel at system pressure at the aperture or by the application of fuel at control pressure at the longitudinal groove.

摘要翻译： 提出了一种用于内燃机的燃料喷射系统的计量和分配阀组件。 计量和分配阀组件包括具有头部68和控制边缘的控制滑块以及具有至少两个控制狭缝的开槽套管。 根据控制滑块和开槽套筒中的控制狭缝之间的相对运动，控制边缘或多或少地打开控制狭缝。 与控制边缘相邻的控制滑块的端面暴露于低于与控制边缘接合的系统压力的控制压力。 控制滑动头在控制边缘和端面之间形成的圆周处的压降能够受到影响，使得控制滑动头至少在位移运动的一部分期间单向地搁置在开槽套筒上。 结果，获得更好的计量精度。 控制滑动头在滑动孔的一侧上的单侧休息可以通过在孔的系统压力下施加燃料或通过在纵向槽处的控制压力下施加燃料来实现。

公开(公告)号：US5365893A

公开(公告)日：1994-11-22

申请号：US93160

申请日：1993-07-19

申请人： Michael Wissmann ,  Hans Nickel ,  Roland Schierling ,  Roland Adam ,  Werner Geyer

发明人： Michael Wissmann ,  Hans Nickel ,  Roland Schierling ,  Roland Adam ,  Werner Geyer

IPC分类号： F02B63/02 ,  F02B75/02 ,  F02M37/12 ,  F02M37/18 ,  F02M59/10 ,  F02M59/14 ,  F02M69/10 ,  F02N19/00 ,  F02B33/04

CPC分类号： F02B63/02 ,  F02M37/18 ,  F02M59/107 ,  F02M59/14 ,  F02M69/10 ,  F02B2075/025 ,  F02M37/046 ,  Y10S123/05

摘要： The invention is directed to a fuel-injection arrangement for a two-stroke engine in a portable handheld work apparatus such as a motor-driven chain saw or the like. Fuel is drawn by suction from a fuel tank by a fuel-feed pump and is made available at the suction connection of an injection pump. The injection pump has a pressure connection which is connected to an injection line through which the engine is supplied with fuel. A rapid start of a two-stroke engine provided with this fuel-injection arrangement is achieved by providing a bypass line which conducts fuel and bypasses the injection pump. A switchable flow valve is mounted in the bypass line. The bypass line opens directly into the intake channel conducting combustion air to the engine so that even without the pump action of the injection pump, adequate fuel is made available to the engine for starting the same.

摘要翻译： 本发明涉及一种用于诸如电动链锯等的便携式手持式工作装置中的二冲程发动机的燃料喷射装置。 燃料通过燃料供给泵从燃料箱的抽吸抽吸并且在注射泵的吸入连接处可用。 喷射泵具有压力连接，其连接到发动机通过其被供应燃料的喷射管线。 提供这种燃料喷射装置的二冲程发动机的快速启动通过提供一个旁路管线来实现，该旁路管路引导燃料并绕过喷射泵。 可切换流量阀安装在旁路管路中。 旁路管路直接打开到进气通道中，将燃烧空气传导到发动机，使得即使没有喷射泵的泵作用，也可以向发动机提供足够的燃料用于启动喷射泵。

公开(公告)号：US5209196A

公开(公告)日：1993-05-11

申请号：US884206

申请日：1992-05-18

申请人： Hans Nickel ,  Michael Wissmann

发明人： Hans Nickel ,  Michael Wissmann

IPC分类号： B27B17/08 ,  F02B77/08 ,  F02D9/02 ,  F02D11/02 ,  F02M1/02 ,  F02P9/00 ,  F02P11/04

CPC分类号： F02P11/04 ,  F02D11/02 ,  F02M1/02 ,  F02D2009/0254 ,  F02D2009/0294

摘要： The invention relates to an operating-mode position selector arrangement for an internal combustion engine in a portable handheld tool such as a motor-driven chain saw. The engine includes an electrical ignition system and is supplied with a fuel mixture by a carburetor. In a start position of the operating-mode position selector, the position selector holds the choke flap and the throttle flap of the carburetor in pregiven start positions. In an operating position of the operating-mode position selector, the throttle flap is released for actuation via a throttle lever and the choke flap is fully opened. In a stop position of the operating-mode position selector, an electric contact is closed between a terminal of the electric ignition system and ground. The different positions of the operating-mode position selector are detected electrically. This is achieved in that for the operating position of the operating-mode position selector, the terminal of the electric ignition system is connected to ground via a further electric contact and a resistor. In this way, the operating position of the operating-mode position selector can be distinguished from the stop position and the start position because of the different voltages which adjust in each position.

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工具中的内燃机的操作模式位置选择器装置。 发动机包括电气点火系统，并由化油器供应燃料混合物。 在操作模式位置选择器的起始位置，位置选择器保持化油器的扼流圈和节气门瓣处于预先启动的位置。 在操作模式位置选择器的操作位置，节流阀被释放以通过节流杆进行致动，扼流圈完全打开。 在操作模式位置选择器的停止位置，电触点在电点火系统的端子和地之间闭合。 操作模式位置选择器的不同位置被电检测。 实现这一点，对于操作模式位置选择器的操作位置，电点火系统的端子经由另外的电触点和电阻器连接到地。 以这种方式，由于在每个位置调节的不同电压，操作模式位置选择器的操作位置可以与停止位置和起始位置区分开。

公开(公告)号：US5153967A

公开(公告)日：1992-10-13

申请号：US744911

申请日：1991-08-14

申请人： Helmut Zimmermann ,  Michael Wissmann

发明人： Helmut Zimmermann ,  Michael Wissmann

IPC分类号： F02N3/02

CPC分类号： F02N3/02 ,  Y10T16/508 ,  Y10T403/7061

摘要： The invention is directed to a handle for a pull-rope starter. The handle includes a T-shaped base body having an elongated part extending in the direction of the pull rope and a handle part extending transversely to the elongated part. The elongated part has a receptacle for accommodating an elastic expansion element which is connected at one end thereof to the pull rope. The expansion element is supported at its other end on the base body. The expansion element is as long as possible and has the longest possible expansion path. This is achieved in that the expansion element is supported at its upper end on the base body with the upper end facing away from the pull rope. In this way, the expansion element is stretched thereby providing a longer expansion path.

摘要翻译： 本发明涉及拉绳起动器的手柄。 手柄包括具有沿拉绳方向延伸的细长部分的T形基体和横向于细长部分延伸的手柄部分。 细长部件具有容纳弹性膨胀元件的容器，该弹性膨胀元件的一端连接到拉绳。 膨胀元件的另一端支撑在基体上。 膨胀元件尽可能长并且具有最长的扩展路径。 这是通过将膨胀元件的上端支撑在基体上而使上端背离拉绳来实现的。 以这种方式，膨胀元件被拉伸，从而提供较长的膨胀路径。

公开(公告)号：US5080379A

公开(公告)日：1992-01-14

申请号：US527371

申请日：1990-05-23

申请人： Helmut Zimmermann ,  Michael Wissmann

发明人： Helmut Zimmermann ,  Michael Wissmann

IPC分类号： F01N13/18 ,  F02F11/00 ,  F16J15/08

CPC分类号： F01N13/185 ,  F01N13/1827 ,  F16J15/0893

摘要： The invention is directed to a seal arranged between two housing parts of a muffler. The seal is configured essentially as a frame and made of sheet steel and has at least two layers. The first layer is defined by the frame itself and the second layer is defined by lugs which are folded over and are configured so as to be integral with the frame.

摘要翻译： 本发明涉及一种布置在消声器的两个壳体部分之间的密封件。 密封件基本上被构造为框架并且由钢板制成并且具有至少两层。 第一层由框架本身限定，第二层由凸起限定，凸起被折叠并且构造成与框架一体。

公开(公告)号：US4890690A

公开(公告)日：1990-01-02

申请号：US240818

申请日：1988-09-06

申请人： Hartmut Fischer ,  Jurgen Grassmuck ,  Michael Wissmann ,  Albert Dreher

发明人： Hartmut Fischer ,  Jurgen Grassmuck ,  Michael Wissmann ,  Albert Dreher

IPC分类号： F01N3/24 ,  F01N3/05 ,  F01N3/28 ,  F01N13/00 ,  F01N13/14 ,  F01N13/18 ,  F02B75/02

CPC分类号： F01N13/002 ,  F01N13/001 ,  F01N13/18 ,  F01N3/05 ,  F01N3/2839 ,  F01N3/2885 ,  F01N13/14 ,  F01N13/1861 ,  F01N2230/04 ,  F01N2230/08 ,  F01N2250/04 ,  F01N2270/02 ,  F01N2270/06 ,  F01N2270/08 ,  F01N2350/00 ,  F01N2470/10 ,  F01N2470/22 ,  F01N2490/06 ,  F01N2590/06 ,  F02B2075/025 ,  Y02T10/20

摘要： The invention is directed to an exhaust gas muffler for a two-cycle engine, especially for a handheld portable tool, such as a chain saw. In exhaust gas mufflers equipped with a catalyzer, the formation of flame from the fuel-containing exhaust gases exiting from the muffler must be prevented. These exhaust gases are intensely overheated because of the exothermal process in the catalyzer. The muffler according to the invention includes a catalyzer which establishes a connection between separate component chambers of the muffler housing. The muffler can be mounted directly on the motor outlet.

摘要翻译： 本发明涉及一种用于双循环发动机的排气消声器，特别是用于诸如链锯的手持便携式工具。 在配备有催化剂的废气消声器中，必须防止从消音器排出的含燃料废气形成火焰。 这些废气由于催化剂中的放热过程而剧烈过热。 根据本发明的消音器包括催化器，其建立消音器壳体的分离的组件室之间的连接。 消声器可以直接安装在电机出口上。