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1. 发明授权

US5544544A Throttle trigger device for an internal combustion engine of a working tool 失效
标题翻译：用于工作工具内燃机的节气门触发装置
公开(公告)号：US5544544A
公开(公告)日：1996-08-13
申请号：US355852
申请日：1994-12-14
申请人： Klaus Hoppner , Bernd Kaiser
发明人： Klaus Hoppner , Bernd Kaiser
IPC分类号： F02D9/02 , F02D11/02 , G01D1/04 , G05G5/08
CPC分类号： F02D11/02 , Y10T74/20238 , Y10T74/2063
摘要： A throttle trigger device for an internal combustion engine of a working tool has a throttle trigger connected to the handle of the working tool so as to be pivotable about a pivot axis. A throttle trigger lock is connected to the handle of the working tool so as to be pivotable about a pivot axis. A spring is connected between the throttle trigger and the throttle trigger lock. The throttle trigger, the throttle trigger lock, and the spring form a unitary part. The spring rests at an abutment of the handle at least when under load such that the spring is divided into functionally independent sections, whereby a first section extends between the abutment and the throttle trigger and a second section extends between the abutment and the throttle trigger lock.
摘要翻译：用于工作工具的内燃机的节气门触发装置具有连接到作业工具的把手的节流触发器，以便绕枢转轴线枢转。节气门触发器锁连接到作业工具的把手，以便绕枢转轴线枢转。节气门触发器和节气门触发器锁之间连接一个弹簧。油门触发器，油门扳机锁和弹簧形成一体的部件。弹簧至少在负载下处于手柄的邻接处，使得弹簧被分成功能上独立的部分，由此第一部分在邻接部和节气门触发器之间延伸，并且第二部分在支座和节气门触发锁之间延伸。

2. 发明授权

US5365893A Fuel-injection arrangement for an internal combustion engine 失效
标题翻译：用于内燃机的燃油喷射装置
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。

3. 发明授权

US5337710A Injection arrangement for a two-stroke engine 失效
标题翻译：二冲程发动机的喷射装置
公开(公告)号：US5337710A
公开(公告)日：1994-08-16
申请号：US61048
申请日：1993-05-14
申请人： Roland Adam
发明人： Roland Adam
IPC分类号： F02B75/02 , F02M59/10 , F02B63/02 , F02D9/10 , F02M35/10 , F02M69/02
CPC分类号： F02M59/107 , F02B2075/025 , Y10S123/05
摘要： A fuel-injection arrangement and a two-stroke engine define a combination for a portable handheld work apparatus such as a motor-driven chain saw or the like. The combination includes a fuel-feed pump for pumping fuel from a fuel tank and a fuel-injection pump for supplying the fuel for injection into the engine. The fuel-feed pump and the fuel-injection pump are mounted in a con, non injection-pump block separate from the engine. The engine has an intake channel through which combustion air is drawn into the engine and the intake channel is configured so as to open directly into the engine. A throttle flap is pivotally mounted in the intake channel as to be completely separate from the common injection-pump block. The injection pump block is effectively thermally decoupled from the intake channel. The danger of vapor bubble formation because of a heating of the injection pump is thereby reliably avoided. A good decoupling of the injection pump from intensely vibrating engine components can also be provided in this manner.
摘要翻译：燃料喷射装置和二冲程发动机为诸如电动链锯等的便携式手持式工作装置确定了组合。该组合包括用于从燃料箱泵送燃料的燃料供给泵和用于将用于喷射的燃料供应到发动机中的燃料喷射泵。燃料供给泵和燃料喷射泵安装在与发动机分离的锥形非注射泵模块中。发动机具有进气通道，燃烧空气通过该进气通道被吸入发动机，并且进气通道构造成直接打入发动机。节气门瓣可枢转地安装在进气通道中，以便与普通喷射泵组件完全分开。注射泵块有效地与进气通道热分离。由此可靠地避免由于注射泵的加热引起的气泡形成的危险。也可以以这种方式提供喷射泵与强烈振动的发动机部件的良好的分离。

4. 发明授权

US5315075A Exhaust gas muffler for an internal combustion engine 失效
标题翻译：用于内燃机的废气消声器
公开(公告)号：US5315075A
公开(公告)日：1994-05-24
申请号：US301549
申请日：1989-01-26
申请人： Wolfgang Junginger , Matthias Rosler , Thomas Rupp
发明人： Wolfgang Junginger , Matthias Rosler , Thomas Rupp
IPC分类号： F01N1/00 , F01N1/06 , F01N1/08 , F01N13/00
CPC分类号： F01N13/002 , F01N1/00 , F01N1/06 , F01N1/08 , F01N2590/06
摘要： The invention is directed to an exhaust gas muffler for an internal combustion engine such as a two-stroke engine for portable handheld tools such as a motor-driven chain saw. The engine includes a cylinder and a piston conjointly defining a combustion chamber wherein combustion gases are generated and discharged as a flow of exhaust gas during operation of the engine. The exhaust gas muffler includes a housing having a shell-like wall defining a chamber for receiving the exhaust gas from the engine. The housing has a primary outlet opening formed in the wall of the housing for passing a primary component flow of the exhaust gas out of the chamber in a first direction. The housing has a secondary outlet opening formed in the wall thereof for passing a secondary component flow of the exhaust gas out of the chamber in a second direction. A guide is provided at the secondary outlet opening for directing the secondary component flow toward and into the primary component flow to break up the latter and cause the same to become turbulent and mix with the cooler ambient air.
摘要翻译：本发明涉及一种用于内燃机的排气消声器，例如用于诸如电动链锯的便携式手持工具的二冲程发动机。发动机包括气缸和活塞，其联合地限定燃烧室，其中燃烧气体在发动机运行期间作为废气流产生和排出。排气消声器包括壳体，壳体具有限定用于接收来自发动机的废气的室的壳状壁。壳体具有形成在壳体的壁中的主出口开口，用于使废气的主要组分流沿第一方向流出室。壳体具有形成在其壁中的次级出口，用于使排气的次要组分流在第二方向上流出室。在次级出口开口处提供引导件，用于将次要部件流朝着主要部件流引导并分散到主要部件流中，以使其分解，并使其相对于较冷的环境空气混合。

5. 发明授权

US5272813A Portable handheld work apparatus 失效
标题翻译：便携式手持式工作装置
公开(公告)号：US5272813A
公开(公告)日：1993-12-28
申请号：US961337
申请日：1992-10-15
申请人： Gunter Wolf , Herbert Armbruster , Reinhold Fink
发明人： Gunter Wolf , Herbert Armbruster , Reinhold Fink
IPC分类号： B27B17/00 , B26B27/00
CPC分类号： B27B17/0008
摘要： The invention is directed to a portable handheld work apparatus such as a motor-driven chain saw. The work apparatus includes a housing having a forward end wall, a rearward end wall defining a plane and a top wall extending between the end walls. A handle is mounted on the top wall for holding and guiding the work apparatus. A work tool is arranged on the forward end wall and a drive motor is mounted in the housing for driving the work tool. A holding lug is provided on the rearward end wall and is pivotable between a rest position wherein the holding lug is recessed in a recess formed in the rearward end wall and an in-use position wherein the holding lug is outside of the recess. The holding lug defines an eyelet through which an operator can pass a rope for holding the work apparatus by attaching the same to a belt or the like thereby freeing the hands of the operator. The holding lug does not constitute a disturbance for the operator when supporting the work apparatus on the body with said rearward end wall.
摘要翻译：本发明涉及一种便携式手持式工作装置，例如电动链锯。工作装置包括具有前端壁，限定平面的后端壁和在端壁之间延伸的顶壁的壳体。手柄安装在顶壁上，用于保持和引导作业装置。工作工具布置在前端壁上，驱动马达安装在壳体中用于驱动作业工具。保持凸耳设置在后端壁上，并且在静止位置之间枢转，其中保持凸耳凹入形成在后端壁中的凹部中，并且其中保持凸耳位于凹部外部的使用位置。保持凸耳限定了一个孔眼，操作者可以通过其将通过将工具装置附接到皮带等上的绳索通过绳索，从而释放操作者的手。当通过所述后端壁将工作装置支撑在主体上时，保持凸耳不会对操作者造成干扰。

6. 发明授权

US5102436A Prefilter for an air filter of an internal combustion engine 失效
标题翻译：用于内燃机空气过滤器的预过滤器
公开(公告)号：US5102436A
公开(公告)日：1992-04-07
申请号：US771053
申请日：1991-10-02
申请人： Dietmar Grabowski
发明人： Dietmar Grabowski
IPC分类号： B01D46/00 , B01D46/24 , B01D46/54 , F02B75/02 , F02M35/024
CPC分类号： F02M35/024 , B01D46/0023 , B01D46/2411 , B01D46/54 , B01D2201/40 , B01D2265/027 , B01D2265/028 , B01D2279/60 , F02B2075/025 , Y10S55/31
摘要： A prefilter for an air main filter of an internal combustion engine such as a two-stroke engine is configured as a filter ring with the engine being especially a two-stroke engine in a handheld work tool. The filter ring defines a flow directed essentially radially inward and the prefilter has a band-like configuration and is mounted for covering the outer surface of the main filter. The prefilter includes a screen held in a flexible frame and so permits a rapid exchange thereof and is easy to clean and does not restrict the air throughput. The frame carries a part of the closure device at each end thereof lying in the longitudinal direction.
摘要翻译：诸如二冲程发动机的内燃机的空气主过滤器的预过滤器被构造为过滤器环，其中发动机特别是手持式工具中的二冲程发动机。过滤环限定基本上径向向内指向的流体，并且预过滤器具有带状构造并且被安装用于覆盖主过滤器的外表面。预过滤器包括保持在柔性框架中的屏幕，因此允许其快速交换并且易于清洁并且不限制空气通过量。框架在其纵向方向上的每一端承载封闭装置的一部分。

7. 发明授权

US5080379A Muffler having a sheet-steel seal 失效
标题翻译：具有薄钢板密封件的冲头
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。

8. 发明授权

US4890690A Exhaust gas muffler for a two-stroke engine 失效
标题翻译：用于二冲程发动机的废气消声器
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。

9. 发明授权

US4836297A Handheld portable tool having an internal combustion engine 失效
标题翻译：具有内燃机的手持便携式工具
公开(公告)号：US4836297A
公开(公告)日：1989-06-06
申请号：US943761
申请日：1986-12-19
申请人： Wolfgang Dorner , Helmut Lux , Reinhold Fink
发明人： Wolfgang Dorner , Helmut Lux , Reinhold Fink
IPC分类号： B27B17/00 , B27B17/08 , F02B63/00 , F02B63/02 , F02B75/02 , F16C3/20 , F16F15/24 , F16F15/26 , F16F15/28
CPC分类号： B27B17/08 , B27B17/0033 , F02B63/02 , F16C3/20 , F16F15/283 , F02B2075/025 , Y10T74/2183
摘要： A handheld portable tool has a drive unit connected to the handle via damping elements. The drive unit includes an internal combustion engine having a crankshaft. To reduce the vibration transmitted by the drive unit to the handles, a static or dynamic imbalance of defined position and quantity is provided on the crankshaft of the engine, as a result of which vibration in the handles is considerably reduced. An imbalancing weight may for instance be provided in the fan wheel, so that the crankshaft and its elements are manufactured and balanced in the same manner as before, and only the fan wheel has to be structurally modified.
摘要翻译：手持便携式工具具有通过阻尼元件连接到手柄的驱动单元。驱动单元包括具有曲轴的内燃机。为了减少由驱动单元传递到手柄的振动，在发动机的曲轴上提供了限定位置和数量的静态或动态不平衡，结果手柄中的振动显着减小。例如，可以在风扇轮中设置不平衡重量，使得曲轴及其元件以与之前相同的方式制造和平衡，并且只有风扇轮必须在结构上进行修改。

10. 发明授权

US4807573A Fuel injection arrangement for a two-stroke engine 失效
标题翻译：二冲程发动机的燃油喷射装置
公开(公告)号：US4807573A
公开(公告)日：1989-02-28
申请号：US202817
申请日：1988-06-06
申请人： Roland Schierling , Werner Geyer , Michael Wissmann , Hans Nickel
发明人： Roland Schierling , Werner Geyer , Michael Wissmann , Hans Nickel
IPC分类号： F02M63/00 , F02B75/02 , F02M59/10 , F02M69/10 , F02M37/04 , F02M59/20
CPC分类号： F02M59/107 , F02B2075/025
摘要： The invention is directed to a fuel injection arrangement for two-stroke engines for portable tools such as motor-driven saws. In known fuel-injecting arrangements, the injection pump is driven by the pressure of the crankcase. The crankcase pressure increases up to a maximum value which remains constant starting with a predetermined rotational speed up to and including the maximum rotational speed. When the peak pressure of the crankcase is constant, the stroke of the pump piston of the injection pump is also constant and so is the quantity of fuel which is pumped. However, at higher speeds where the speed is increasing because of throttling in the air intake channel, the air charge of the cylinder reduces and an overrich mixture is formed. The fuel injection arrangement of the invention provides for an automatic reduction in the quantity of fuel injected at high and at the highest speeds. For adapting the required quantity of fuel at high speeds, a counterpressure is developed in the return chamber of the injection pump in dependence upon speed whereby the stroke of the pump piston is reduced. In this way, a corresponding reduction of the pumped quantity of fuel is achieved.
摘要翻译：本发明涉及用于诸如电动锯的便携式工具的二冲程发动机的燃料喷射装置。在已知的燃料喷射装置中，喷射泵由曲轴箱的压力驱动。曲轴箱压力增加到直到并包括最大转速为止的预定转速开始保持恒定的最大值。当曲轴箱的峰值压力恒定时，喷射泵的泵活塞的行程也是恒定的，泵送的燃料量也是恒定的。然而，在由于进气通道中的节流而在速度增加的较高速度下，气缸的气流减少并且形成了丰富的混合物。本发明的燃料喷射装置提供了以高和最高速度喷射的燃料量的自动减少。为了适应所需量的高速燃料，在注射泵的返回室中，根据速度产生反压力，由此泵活塞的行程减小。以这种方式，实现了相应减少的泵送量的燃料。

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