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公开(公告)号：US4890690A
公开(公告)日：1990-01-02
申请号：US240818
申请日：1988-09-06
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。
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公开(公告)号：US4907746A
公开(公告)日：1990-03-13
申请号：US725522
申请日：1985-04-23
申请人： Karl Aichele , Wolfgang Kramer , Ernst Lang , Mathias Linssen , Alois Stemmer , Michael Wissmann
发明人： Karl Aichele , Wolfgang Kramer , Ernst Lang , Mathias Linssen , Alois Stemmer , Michael Wissmann
CPC分类号： F02M61/1806 , F02M51/061 , F02M61/162 , F02M61/188 , F02M2051/08 , Y10S239/90
摘要： An injection valve for fuel injection systems in internal combustion engines which comprises a movable valve element cooperating with a valve seat disposed in a nozzle body, with a guide bore provided downstream of the valve seat. A swirl insert is partially compressed in the guide bore and disposes open swirl channels in the direction of its circumference. The swirl channels extend in an axial direction from one end of the swirl insert to the other, are slanted toward the longitudinal shaft of the injection valve and discharge in a tangential direction into a preparation bore. The swirl channels serve simultaneously as metering channels whose throttling length is adjustable by displacing the swirl insert inside the guide bore.
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公开(公告)号：US4867270A
公开(公告)日：1989-09-19
申请号：US258729
申请日：1988-10-17
CPC分类号： F01N13/002 , F01N3/05 , F01N3/2839 , F01N3/2842 , F01N3/2885 , F01N13/14 , F01N2230/04 , F01N2270/02 , F01N2590/06 , Y02T10/20 , Y10S55/30
摘要： The invention relates to an exhaust gas muffler for a two-stroke engine of a portable handheld tool such as a chain saw. The exhaust gas muffler includes a catalyzer wherein high exhaust gas temperatures are developed because of the exothermal reaction which takes place therein. The catalyzer is located in the forward portion of a gas-tight hollow body mounted in the housing of the muffler. The hollow body has a tapered portion which extends out of the housing in the direction of the exhaust gas flow. In this way, the surface temperature of the muffler housing is reduced.
摘要翻译： 本发明涉及一种便携式手持式工具如链锯的二冲程发动机的排气消声器。 排气消声器包括催化剂，其中由于在其中发生放热反应而产生高排气温度。 催化剂位于安装在消音器壳体中的气密中空体的前部。 中空体具有沿着排气流动方向从壳体延伸出的锥形部分。 以这种方式，消音器壳体的表面温度降低。
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公开(公告)号：US4633843A
公开(公告)日：1987-01-06
申请号：US642757
申请日：1984-08-21
CPC分类号： F02M37/0023 , F02M17/04 , F02M37/007 , F02M37/0076 , F02B2075/025 , F02B63/02 , F02D33/006 , Y10T137/86316
摘要： The invention is directed to a carburetor arrangement for an internal combustion engine of a working tool such as a portable hand-held chain saw, a cutoff machine or the like and includes a tank from which the fuel is conducted to the main nozzle of a carburetor via an inlet valve of the carburetor. A tank pressure blocking valve is mounted in the fuel feed line between the tank and the nozzle. The valve body of the blocking valve is pressed tightly against its valve seat in the direction of fuel flow and pressure drop when the engine is at standstill. During starting and running of the engine, the valve body is lifted from its seat by the underpressure condition caused by the engine and is moved in a direction opposite to an overpressure in the tank and against the flow of fuel.
摘要翻译： 本发明涉及一种用于诸如便携式手持链锯，切割机等的工作工具的内燃机的化油器装置，并且包括燃料被引导到化油器的主喷嘴的罐 通过化油器的入口阀。 油箱压力阻塞阀安装在罐和喷嘴之间的燃料供给管线中。 当发动机处于停止状态时，阻塞阀的阀体在燃料流动和压降方向上紧紧地压靠其阀座。 在发动机的启动和运行期间，阀体由于由发动机引起的负压条件而从其座椅上抬起，并且在与罐中的超压相反的方向上移动并抵抗燃料流动。
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公开(公告)号：US4408587A
公开(公告)日：1983-10-11
申请号：US236384
申请日：1981-02-20
申请人： Michael Wissmann
发明人： Michael Wissmann
摘要： A fuel injection system is proposed which is triggerable in such a way that in the presence of control signals, in particular those characterizing engine overrunning, the fuel injection is interrupted. The fuel injection system includes metering valves to each of which one regulating valve is assigned, the valves each having a movable valve element which can be subjected on the one hand to the fuel pressure downstream of the respective metering valve and a spring and on the other hand to the pressure in a control pressure line. In the fuel supply line a pressure-reduction valve is provided upstream of the metering valve. During engine overrunning, the fuel pressure in the control pressure line is controllable by means of an electromagnetic valve in such a way that the fuel pressure in the control pressure line increases and the regulating valves close as a result of which the fuel injection is interrupted.
摘要翻译： 提出了一种燃料喷射系统，其可触发，使得在存在控制信号的情况下，特别是那些表征发动机超速运行的燃料喷射系统中，燃料喷射被中断。 燃料喷射系统包括计量阀，其中分配有一个调节阀，每个阀具有可移动阀元件，该可动阀元件一方面可以经受相应计量阀下游的燃料压力和一个弹簧，另一个 手压到控制压力线。 在燃料供给管路中，在计量阀的上游设有减压阀。 在发动机超速期间，控制压力线路中的燃料压力可以通过电磁阀来控制，使得控制压力管线中的燃料压力增加，并且调节阀关闭，结果燃料喷射被中断。
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公开(公告)号：US4381751A
公开(公告)日：1983-05-03
申请号：US236382
申请日：1981-02-20
申请人： Wolfgang Maisch , Jurgen Peters , Michael Wissmann , Karl Gmelin , Peter Stiefel
发明人： Wolfgang Maisch , Jurgen Peters , Michael Wissmann , Karl Gmelin , Peter Stiefel
CPC分类号： F02M69/26
摘要： A fuel injection system is proposed which serves to provide the most precise possible adaptation of the fuel-air mixture to operating conditions of the internal combustion engine. The fuel injection system includes metering valves, each of which is assigned one regulating valve, whose movable valve element can be exposed on the one hand to the fuel pressure downstream of the respective metering valve and on the other hand to the pressure in a control pressure line, which is limited on the one hand by an electro-fluid converter of the nozzle/bounce plate type and on the other hand by a control throttle. The electro-fluid converter is triggerable in accordance with operating characteristics of the engine. A pressure limitation valve is embodied as a diaphragm valve and serves to regulate the most precise possible system pressure in the engine and, when the engine is shut off, it serves to reduce the fuel pressure in the fuel injection system below the fuel pressure required for opening the injection valves and to block the return flow lines.
摘要翻译： 提出了一种燃料喷射系统，其用于提供燃料 - 空气混合物对内燃机的操作条件的最精确的可能的适应。 燃料喷射系统包括计量阀，每个计量阀被分配一个调节阀，其可移动阀元件可以一方面暴露于相应计量阀下游的燃料压力，另一方面暴露于控制压力 一方面由喷嘴/反弹板型的电流体转换器限制，另一方面由控制节流阀限制。 电流体转换器可根据发动机的操作特性进行触发。 压力限制阀被实施为隔膜阀，并且用于调节发动机中最精确的可能的系统压力，并且当发动机关闭时，其用于将燃料喷射系统中的燃料压力降低到低于 打开注射阀并阻止回流管线。
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公开(公告)号：US4353385A
公开(公告)日：1982-10-12
申请号：US236385
申请日：1981-02-20
CPC分类号： F02M69/26 , Y10T137/2642 , Y10T137/7836
摘要： A diaphragm pressure regulator is proposed which serves to regulate a fluid pressure in a system having fluid flowing through it, and in particular to relate the fuel pressure in a fuel injection system. The diaphragm pressure regulator includes a valve diaphragm, which cooperates with a valve seat. The valve diaphragm separates a spring chamber having a system pressure spring from a system pressure chamber, into which the valve seat, which is axially displaceable and is supported in an axial bearing point, protrudes and which communicates with the fluid to be regulated. The end of the valve seat remote from the valve diaphragm is embodied as a valve plate and protrudes into a collection chamber, in which it opens a sealing seat toward a return flow line to a greater or lesser extent. A closing pressure spring engages the valve plate and urges the valve seat in the direction of the valve diaphragm. When the valve diaphragm is lifted up from the valve seat, fluid flows via a conduit in the valve seat into the collection chamber. A throttle gap is provided between the system pressure chamber and the collection chamber, by way of which throttle gap fluid can flow out to the collection chamber, when the fluid system is shut off, until such time as the valve plate is pressed in a sealing fashion against the sealing seat and blocks the return flow line, which takes place below a predetermined fluid pressure.
摘要翻译： 提出了一种隔膜压力调节器，其用于调节具有流过其中的流体的系统中的流体压力，并且特别地涉及燃料喷射系统中的燃料压力。 膜片压力调节器包括与阀座配合的阀膜片。 阀隔膜将具有系统压力弹簧的弹簧室从系统压力室分离开，阀座可轴向移动并被支撑在轴向支承点中，并且与被调节的流体连通。 远离阀隔膜的阀座的端部被实施为阀板并且突出到收集室中，在收集室中朝向返回流动管线打开密封座或多或少的程度。 闭合压力弹簧与阀板接合并沿阀膜片的方向推压阀座。 当阀膜从阀座上升时，流体经由阀座中的导管流入收集室。 在系统压力室和收集室之间提供节流间隙，当流体系统被切断时，节流间隙流体可以通过该节流间隙流体流出到收集室，直到阀板被密封 抵抗密封座并阻止在预定流体压力以下发生的回流管线。
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38.发明授权Motor chain saw having a guide bar clamped between the housing and a clamping piece 失效电动链锯具有夹在壳体和夹紧件之间的导杆
公开(公告)号：US4999918A
公开(公告)日：1991-03-19
申请号：US448620
申请日：1989-12-11
摘要： The invention relates to a motor chain saw having a guide bar clamped between the housing and a clamping piece. The chain saw has a drive motor arranged in a housing and the drive motor drives a saw chain running on a guide bar. The guide bar is clamped to the housing at one end between the housing and a clamping piece with the clamping being transverse to the plane of the guide bar. For tensioning the saw chain, the guide bar is displaceable in the longitudinal direction thereof by means of a chain tensioning device when the clamping piece is loosened. If high forces act on the guide bar, then the latter slips toward the sprocket wheel in the longitudinal direction notwithstanding the fact that the guide bar is clamped to the housing. Accordingly, the saw chain must be again tensioned by means of the chain tensioning device. According to a feature of the invention, at least one of the surfaces between the end of the guide bar and the housing or between the clamping piece is treated to increase friction whereby higher forces can act on the clamping connection for the same clamping force without effecting a displacement of the guide bar. It then becomes unnecessary to retension the saw chain while working with the chain saw.
摘要翻译： 本发明涉及一种电动链锯，其具有夹在壳体和夹紧件之间的导杆。 链锯具有布置在壳体中的驱动马达，并且驱动马达驱动在引导杆上运行的锯链。 引导杆在壳体和夹紧件之间的一端被夹紧到壳体，夹紧件横向于导杆的平面。 为了张紧锯链，当夹紧件松动时，引导杆可以通过链条张紧装置在其纵向方向上移位。 如果高力作用在导杆上，则后者在纵向方向上朝向链轮滑动，尽管导向杆被夹紧到壳体。 因此，锯链必须再次通过链条张紧装置张紧。 根据本发明的特征，引导杆的端部与壳体之间或夹紧件之间的至少一个表面被处理以增加摩擦，由此较高的力可以在夹持连接上作用于相同的夹紧力而不影响 引导杆的位移。 在使用链锯的同时，不必再拉锯锯。
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公开(公告)号：US4732327A
公开(公告)日：1988-03-22
申请号：US947795
申请日：1986-12-30
申请人： Karl Aichele , Wolfgang Kramer , Ernst Lang , Mathias Linssen , Alois Stemmer , Michael Wissmann
发明人： Karl Aichele , Wolfgang Kramer , Ernst Lang , Mathias Linssen , Alois Stemmer , Michael Wissmann
CPC分类号： F02M61/1806 , F02M51/061 , F02M61/162 , F02M61/188 , F02M2051/08 , Y10S239/90
摘要： An injection valve for fuel injection systems in internal combustion engines which comprises a movable valve element cooperating with a valve seat disposed in a nozzle body, with a guide bore provided downstream of the valve seat. A swirl insert is partially compressed in the guide bore and disposes open swirl channels in the direction of its circumference. The swirl channels extend in an axial direction from one end of the swirl insert to the other, are slanted toward the longitudinal shaft of the injection valve and discharge in a tangential direction into a preparation bore. The swirl channels serve simultaneously as metering channels whose throttling length is adjustable by displacing the swirl insert inside the guide bore.
摘要翻译： 一种用于内燃机中的燃料喷射系统的喷射阀，包括与设置在喷嘴主体中的阀座配合的可移动阀元件，其具有设置在阀座下游的引导孔。 旋转插入件在导向孔中被部分地压缩，并在其圆周方向上设置开放的旋流通道。 涡流通道从旋转插入件的一端沿轴向方向延伸到另一端，朝向喷射阀的纵向轴线倾斜，并沿切线方向排放到准备孔中。 涡流通道同时作为计量通道，其节流长度可通过使导向孔内的涡流插入件移位来调节。
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公开(公告)号：US4467766A
公开(公告)日：1984-08-28
申请号：US500047
申请日：1983-06-01
申请人： Michael Wissmann
发明人： Michael Wissmann
摘要： A fuel injection system is proposed which is triggerable in such a way that in the presence of control signals, in particular those characterizing engine overrunning, the fuel injection is interrupted. The fuel injection system includes metering valves to each of which one regulating valve is assigned, the valves each having a movable valve element which can be subjected on the one hand to the fuel pressure downstream of the respective metering valve and a spring and on the other hand to the pressure in a control pressure line. In the fuel supply line a pressure-reduction valve is provided upstream of the metering valve. During engine overrunning, the fuel pressure in the control pressure line is controllable by means of an electromagnetic valve in such a way that the fuel pressure in the control pressure line increases and the regulating valves close as a result of which the fuel injection is interrupted.
摘要翻译： 提出了一种燃料喷射系统，其可触发，使得在存在控制信号的情况下，特别是那些表征发动机超速运行的燃料喷射系统中，燃料喷射被中断。 燃料喷射系统包括计量阀，其中分配有一个调节阀，每个阀具有可移动阀元件，该可动阀元件一方面可以经受相应计量阀下游的燃料压力和一个弹簧，另一个 手压到控制压力线。 在燃料供给管路中，在计量阀的上游设有减压阀。 在发动机超速期间，控制压力线路中的燃料压力可以通过电磁阀来控制，使得控制压力管线中的燃料压力增加，并且调节阀关闭，结果燃料喷射被中断。
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