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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：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：US5447131A
公开(公告)日：1995-09-05
申请号：US285303
申请日：1994-08-03
申请人： Hans Nickel , Thomas Schuster , Michael Wissmann
发明人： Hans Nickel , Thomas Schuster , Michael Wissmann
CPC分类号： F02P5/1502 , F02P9/005 , Y02T10/46
摘要： The invention is directed to an ignition circuit for an internal combustion engine in a portable handheld work apparatus wherein a work tool is driven via a clutch. The ignition circuit includes an ignition time point control which connects a spark plug via a switch to a voltage source in order to trigger an ignition spark. The spark plug is mounted in the combustion chamber of the engine. This connection takes place in dependence upon the crankshaft angle and the rpm of the engine. In order to prevent damage to the clutch because of a blocked work tool, a test value counter driven via a rpm gate circuit is provided. The test value counter increments its value in the pregiven rpm window of the gate circuit with each rotation of the crankshaft and the content of the test value counter is compared to a pregiven limit value by a comparator. The output of the comparator activates a rpm-reducing protective circuit and the output of the comparator indicates reaching or exceeding the limit value.
摘要翻译： 本发明涉及一种便携式手持式工作装置中用于内燃机的点火电路，其中通过离合器驱动作业工具。 点火电路包括点火时间点控制，其通过开关将火花塞连接到电压源以触发点火火花。 火花塞安装在发动机的燃烧室中。 这种连接取决于发动机的曲轴角度和转速。 为了防止由于工作工具被堵塞而对离合器造成损坏，提供了通过rpm门电路驱动的测试值计数器。 测试值计数器在曲轴的每次旋转时增加门电路的预定转速窗口中的值，并通过比较器将测试值计数器的内容与预定极限值进行比较。 比较器的输出启动减速保护电路，比较器的输出指示达到或超过极限值。
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公开(公告)号：US4936267A
公开(公告)日：1990-06-26
申请号：US267847
申请日：1988-11-07
CPC分类号： F02M17/04 , F02M1/16 , Y10S261/08 , Y10S261/68
摘要： The invention relates to a carburetor for an internal combustion engine and especially for a portable small engine. The carburetor includes a carburetor housing defining an intake pipe and a control chamber which communicates with the intake pipe via intake channels. A fuel-feed line which is closable by an inlet valve opens into the control chamber. The inlet valve includes a valve seat formed in the fuel-feed line and a valve body mounted on a positioning lever which is connected to a membrane defining a wall of the control chamber. The positioning lever can be pivotally actuated to open the inlet valve to admit fuel into the control chamber. An actuating lever is pivotally mounted on the carburetor housing and can be pivoted from a rest position to an active position whereat the actuating lever applies a force against the membrane to displace the latter and pivotally actuate the positioning lever to immediately open the inlet valve when starting the engine.
摘要翻译： 本发明涉及一种用于内燃机，特别是便携式小型发动机的化油器。 化油器包括限定进气管的化油器壳体和通过进气通道与进气管连通的控制室。 通过入口阀关闭的燃料供给管线通向控制室。 入口阀包括形成在燃料供给管线中的阀座和安装在定位杆上的阀体，定位杆连接到限定控制室的壁的膜。 定位杆可以被枢转地驱动以打开入口阀，以将燃料引入控制室。 驱动杆枢转地安装在化油器壳体上，并且可以从静止位置枢转到主动位置，在该位置，致动杆向膜施加力以使其移动，并且枢转地致动定位杆，以在起动时立即打开入口阀 引擎。
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5.发明授权Ignition arrangement for an internal combustion engine of a handheld portable tool 失效用于手持便携式工具的内燃机的点火装置
公开(公告)号：US4709669A
公开(公告)日：1987-12-01
申请号：US907045
申请日：1986-09-12
申请人： Michael Wissmann , Jurgen Weber , Hans Nickel
发明人： Michael Wissmann , Jurgen Weber , Hans Nickel
CPC分类号： F02P1/02 , F02B63/02 , F02B2075/025 , F02B2075/027
摘要： The invention is directed to an ignition arrangement for an internal combustion engine of a handheld portable tool such as a chain saw or the like. The engine has a crankshaft and a fan wheel is seated on the crankshaft for rotation therewith. The ignition arrangement includes a permanent magnet. The magnet has two pole shoes and an exciter coil is mounted on the permanent magnet. The permanent magnet equipped in this way is fixedly mounted on the tool to save weight. A relatively light self-supporting annular member with projections is mounted in the fan wheel. The projections of the annular member and the permanent magnet with its pole shoes conjointly define a magnetic circuit. As the projections pass the pole shoes at a minimal spacing therefrom during operation of the engine, the projections alternately open and close the magnetic circuit thereby causing changes in the flux of this circuit. The flux changes cause a voltage to be inducted in the exciter coil which serves to generate the igniting spark via an appropriate electronic circuit.
摘要翻译： 本发明涉及一种用于诸如链锯等手持便携式工具的内燃机的点火装置。 发动机具有曲轴并且风扇轮座落在曲轴上以与其一起转动。 点火装置包括永磁体。 磁铁具有两个极靴，励磁线圈安装在永磁体上。 以这种方式配备的永磁体固定安装在工具上以节省重量。 具有突起的相对轻的自支撑环形构件安装在风扇轮中。 环形构件和永磁体与其极靴的突起共同限定了磁路。 由于在发动机运转期间突起以极小的间隔通过极靴，所以突起交替地打开和关闭磁路，从而引起该电路的通量的变化。 磁通变化导致在激励器线圈中感应出电压，该电压用于通过适当的电子电路产生点火火花。
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公开(公告)号：US4672929A
公开(公告)日：1987-06-16
申请号：US809013
申请日：1985-12-13
申请人： Michael Wissmann , Hans Nickel , Jurgen Weber
发明人： Michael Wissmann , Hans Nickel , Jurgen Weber
CPC分类号： F02M1/10 , F02B2075/025
摘要： An automatic starting arrangement for a hand-started internal combustion engine is disclosed. Internal combustion engines of this type have a choke flap and a throttle flap positioned one behind the other in the air-intake channel. In order to ensure a reliable starting of the engine independently of manual positioning activities, the invention provides that in the start position the choke flap is coupled with the throttle flap in a position-dependent manner and the choke flap holds the throttle flap in a position between the full-throttle position and the idle position. The choke flap is brought into an at-rest position via an actuating device which is actuable in dependence upon the operating condition of the engine. The choke flap is decoupled from the throttle flap in the at-rest position.
摘要翻译： 公开了一种手动起动内燃机的自动启动装置。 这种类型的内燃机在进气通道中具有扼流圈和一个在另一个之后定位的节流阀。 为了确保独立于手动定位活动的发动机的可靠启动，本发明提供了在起始位置中，扼流圈与节气门瓣以位置相关的方式联接，扼流圈将节气门瓣保持在位置 在全节气门位置和空转位置之间。 扼流圈通过致动装置进入静止位置，该致动装置可根据发动机的操作状态而致动。 扼流圈在静止位置与节气门瓣分离。
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公开(公告)号：US4341192A
公开(公告)日：1982-07-27
申请号：US129496
申请日：1980-03-11
申请人： Heinrich Knapp , Wolfgang Maisch , Klaus-Jurgen Peters , Michael Wissmann , Gunther Jaggle , Peter Schelhas
发明人： Heinrich Knapp , Wolfgang Maisch , Klaus-Jurgen Peters , Michael Wissmann , Gunther Jaggle , Peter Schelhas
摘要： A fuel injection system is proposed which brings about an improvement in the acceleration behavior of an internal combustion engine. The fuel injection system includes metering valves actuatable by means of an air flow measuring device, at which valves a pressure difference can be held constant via control valves and the pressure difference is variable in accordance with operational characteristics of the engine. To this end, the control valves are located on a control pressure line in which a control throttle and an electromagnetic valve are disposed. At the same time, pressure limitation elements communicate with the control pressure line and, in the event of acceleration of the engine, reduce the extent of increase of control pressure and thus assure fuel metering corresponding with the operational state of the engine.
摘要翻译： 提出了一种燃料喷射系统，其引起内燃机的加速行为的改善。 燃料喷射系统包括可通过气流测量装置致动的计量阀，在该阀处通过控制阀将压力差保持不变，并且压力差根据发动机的操作特性是可变的。 为此，控制阀位于控制节流阀和电磁阀的控制压力管路上。 同时，压力限制元件与控制压力线通信，并且在发动机的加速的情况下减小控制压力的增加的程度，从而确保与发动机的操作状态对应的燃料计量。
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8.发明授权Regulating apparatus for a fuel supply system for a mixture-compressing, externally ignited internal combustion engine 失效用于混合压缩，外部点燃的内燃机的燃料供应系统的调节装置
公开(公告)号：US4192271A
公开(公告)日：1980-03-11
申请号：US905302
申请日：1978-05-02
CPC分类号： F02M69/42 , F02M69/22 , Y10S261/74
摘要： A regulating apparatus is proposed for a fuel supply system for a mixture-compressing, externally ignited internal combustion engine, which serves to enrich the fuel-air mixture furnished to the engine when it is started cold and while it warms up. The regulating apparatus comprises a pressure-regulating valve which sets the fuel pressure, the closing force of which on the movable valve part is influenced by a temperature-dependent element by means of a relay device and a regulating spring coaxially correlated therewith. Accordingly in a predetermined temperature range, the temperature-dependent element and the movable valve part are connected only by the regulating spring.
摘要翻译： 提出了一种用于混合压缩的外部点燃的内燃机的燃料供应系统的调节装置，其用于在发动机冷启动时及其加热时提供给发动机的燃料空气混合物。 调节装置包括压力调节阀，其设置燃料压力，其中可动阀部件的关闭力受到与温度相关的元件的影响，该继电器装置和与其同轴相关的调节弹簧。 因此，在规定的温度范围内，温度依赖元件和可动阀部仅通过调节弹簧连接。
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公开(公告)号：US5281086A
公开(公告)日：1994-01-25
申请号：US943040
申请日：1992-09-10
申请人： Michael Wissmann , Hans Nickel , Roland Schierling , Werner Geyer
发明人： Michael Wissmann , Hans Nickel , Roland Schierling , Werner Geyer
CPC分类号： F04C2/1073 , F04D3/02 , F04D5/001
摘要： The invention is directed to a pump for pumping a viscous fluid. The pump includes a stator body and a rotor body rotatably mounted in the stator body so as to be coaxial therewith. The stator body has a wall structure having a spiral slot formed therein which communicates with a suction connection formed in the stator body for conducting the viscous fluid to be pumped into the slot. A pressure connection is formed in the stator body for conducting the viscous fluid out of the slot. The suction connection and the pressure connection open into respective peripheral annular slots which are formed between a total of at least three sealing rings on the outer surface of the stator body. The channels for liquids provided in a housing can be disposed in any rotational position relative to the stator. This affords the advantage that the pump stator can be seated with any rotational position in a receiving cylinder of the housing. The sealing rings are injection molded on the stator body to define a tight seat in the receiving cylinder of the housing without additional seals. By a simple insertion of the pump rotor, a connection between the connections of the pump and the channels in the housing is provided which is tight with respect to the medium under pressure.
摘要翻译： 本发明涉及一种用于泵送粘性流体的泵。 该泵包括定子体和可转动地安装在定子体内以与其同轴的转子体。 定子体具有形成在其中的螺旋槽的壁结构，其与形成在定子体中的吸入连接部连通，用于将要泵送到槽中的粘性流体导入。 在定子体中形成压力连接，用于将粘性流体导出槽。 吸入连接和压力连接通向形成在定子体的外表面上的总共至少三个密封环之间的各个周边环形槽中。 设置在壳体中的液体的通道可以相对于定子设置在任何旋转位置。 这提供了这样的优点：泵定子可以在壳体的接收缸中具有任何旋转位置。 密封环注射成型在定子体上，以在外壳的容纳圆筒中限定一个紧密的座，而没有附加的密封。 通过简单地插入泵转子，提供了泵的连接和壳体中的通道之间的连接，其在压力下相对于介质是紧的。
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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。
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