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

IPC分类号： B27B17/12 ,  F01M1/02 ,  F04C2/00 ,  F04C2/107 ,  F04D3/02 ,  F04D5/00 ,  F16N13/20 ,  F04D29/02

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。

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：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。

公开(公告)号：US4700668A

公开(公告)日：1987-10-20

申请号：US875407

申请日：1986-06-17

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： F02D41/02 ,  F02B75/02 ,  F02D3/00 ,  F02M59/00 ,  F02M59/10 ,  F02M69/10 ,  F02M69/52 ,  F02B33/04

CPC分类号： F02M59/107 ,  F02B2075/025

摘要： The invention is directed to a method of fuel injection for two-stroke engines, especially for hand-operated tools such as motor-driven saws and the like. The fuel-injection pump is charged with pressure present in the crankcase thereby causing fuel to be pumped for injection and combustion in the engine. The injection operation is triggered and the onset of injection into the combustion chamber is effected when the crankcase pressure rises. The pressure conducted from the crankcase to the injection pump can be automatically regulated as a function of the rotational speed and/or load conditions of the engine.

摘要翻译： 本发明涉及一种用于二冲程发动机的燃料喷射方法，特别是用于诸如马达驱动锯等的手动工具。 燃料喷射泵对曲轴箱中存在的压力进行充电，从而使得燃料被泵送以在发动机中进行喷射和燃烧。 当曲轴箱压力升高时，喷射操作被触发并且进入燃烧室的喷射开始。 从曲轴箱传导到喷射泵的压力可以根据发动机的转速和/或负载条件自动调节。

公开(公告)号：US5353754A

公开(公告)日：1994-10-11

申请号：US93155

申请日：1993-07-19

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

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

IPC分类号： F02B75/02 ,  F02M37/04 ,  F02M37/12 ,  F02M55/04 ,  F02M59/10 ,  F02M59/14 ,  F02M59/46 ,  F02M69/10 ,  F02M69/34 ,  F04B45/053 ,  F04B53/00 ,  F02B33/04

CPC分类号： F02M69/34 ,  F02M37/043 ,  F02M37/12 ,  F02M55/04 ,  F02M59/107 ,  F02M59/14 ,  F02M69/10 ,  F02B2075/025 ,  Y10S123/05

摘要： The invention is directed to a fuel-injection arrangement for a two-stroke engine in a motor-driven chain saw. An injection pump is mounted in a base housing with the injection pump including a pump piston axially displaceable in a pump cylinder. The pump piston delimits a pump chamber. The pump chamber is connected via a suction valve to a fuel tank. The fuel drawn by suction is pumped by the pump piston via a pressure valve, an injection line and an injection valve to the engine. For driving the pump piston, the latter is connected at one end to a membrane via a membrane plate. The membrane delimits a work chamber charged with fluctuating crankcase pressure. A simple assembly is provided by arranging the pump chamber, the suction valve and the pressure valve in a common valve housing which, in turn, is seated in the base housing of the injection pump in a seal-tight manner. The injection line is connected directly to the valve housing. This permits a preassembly of the valve housing with the valves provided therein which facilitates the manufacture of the fuel-injection arrangement.

摘要翻译： 本发明涉及一种用于电动链锯中的二冲程发动机的燃料喷射装置。 注射泵安装在基座壳体中，注射泵包括在泵缸中可轴向移位的泵活塞。 泵活塞限定泵室。 泵室通过吸入阀连接到燃料箱。 通过抽吸抽吸的燃料由泵活塞通过压力阀，注射管线和喷射阀泵送到发动机。 为了驱动泵活塞，后者通过膜板在一端连接到膜。 隔膜界定了带有波动的曲轴箱压力的工作室。 通过将泵室，吸入阀和压力阀布置在共同的阀壳中来提供简单的组件，该阀壳又以密封的方式安置在注射泵的基座中。 注射管线直接连接到阀壳体。 这允许阀壳体与其中设置的阀预组装，这有助于燃料喷射装置的制造。

公开(公告)号：US5419686A

公开(公告)日：1995-05-30

申请号：US92918

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： F02M37/06 ,  F02B75/02 ,  F02M37/04 ,  F02M37/12 ,  F04B43/02 ,  F04B43/06 ,  F04B53/10 ,  F04B17/00 ,  F02B33/04

CPC分类号： F02M37/12 ,  F02M37/046 ,  F04B53/1065 ,  F04B53/107 ,  F02B2075/025

摘要： The invention is directed to a fuel pump for an internal combustion engine such as a two-stroke engine in a portable handheld work apparatus such as a motor-driven chain saw or the like. A pump chamber is connected via a suction valve to a fuel feed and via a pressure valve to a pressure line. A pump membrane delimits the pump chamber and is driven by the fluctuating crankcase pressure of the engine which is present in the work chamber. Pump operation free of disturbances over a wide rpm range is attained with the suction valve to the pump chamber being configured essentially as a valve having the shape of a part circle, The pressure valve is disposed approximately at the center of the suction valve and delimits the pump chamber in the stroke direction of the pump membrane.

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诸如二冲程发动机的内燃机的燃料泵。 泵室通过吸入阀连接到燃料进料口并通过压力阀连接到压力管路。 泵膜限定泵室，并由存在于工作室中的发动机的曲轴箱压力波动驱动。 通过泵室的吸入阀基本上被构造为具有部分圆形形状的阀，实现了在宽的转速范围内没有扰动的泵操作。压力阀大致设置在吸入阀的中心并限定 泵室在泵膜的冲程方向。

公开(公告)号：US4976246A

公开(公告)日：1990-12-11

申请号：US262146

申请日：1988-10-21

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

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

IPC分类号： F02M69/02 ,  B27B17/00 ,  F02B33/04 ,  F02B63/02 ,  F02B75/02 ,  F02M39/02 ,  F02M59/10 ,  F02M59/44 ,  F02M69/10

CPC分类号： F02B63/02 ,  F02B33/04 ,  F02M39/02 ,  F02M59/107 ,  F02M59/445 ,  F02M69/10 ,  F02B2075/025

摘要： The invention relates to a handheld portable tool driven by a two-stroke engine equipped with a pneumatically actuated injection pump. Injection pumps for two-stroke engines are generally rigidly connected to the engine so that the injection line can be rigid and as short as possible. This, however, leads to operational disturbances in the injection pump. To eliminate these disturbances, the injection pump is mounted in a thermally insulated handle housing portion of the tool which is damped with respect to the vibrations of the engine and is connected to the latter via flexible connecting lines.

摘要翻译： 本发明涉及一种由配有气动致动注射泵的二冲程发动机驱动的手持便携式工具。 用于二冲程发动机的注射泵通常刚性地连接到发动机，使得注射管线可以是刚性的并且尽可能短。 然而，这会导致注射泵的操作紊乱。 为了消除这些干扰，注射泵安装在工具的绝热手柄壳体部分中，该部分相对于发动机的振动而被阻尼，并且通过柔性连接线与后者连接。

公开(公告)号：US4938660A

公开(公告)日：1990-07-03

申请号：US373636

申请日：1989-06-08

申请人： Karsten Schone ,  Hans Nickel ,  Werner Geyer ,  Roland Schierling

发明人： Karsten Schone ,  Hans Nickel ,  Werner Geyer ,  Roland Schierling

IPC分类号： B27B17/12 ,  F04D3/02 ,  F04D5/00 ,  F04D7/00 ,  F16J15/40 ,  F16N13/20

CPC分类号： F16J15/406 ,  B27B17/12 ,  F04D3/02 ,  F04D5/001 ,  F16N13/20

摘要： The invention is directed to a pump for use as a lubricating oil pump in internal combustion engines of handheld portable tools such as motor-driven chain saws or the like. The pump includes a body forming the stator and a body forming the rotor. These bodies lie coaxial with respect to each other and have respective surfaces which lie seal-tight against each other. A screw-shaped spiral slot is formed in one of these surfaces and has an input end connected to a suction connection and an output end connected with a pressure connection. According to a feature of the invention, at least the screw-shaped wall structure is made of an elastomer. This wall structure defines the spiral slot and lies against the smooth surface lying opposite thereto. An absolutely seal-tight contact engagement of the wall structure defining the spiral slot against the opposite-lying surface is assured by the elasticity of the elastomer. The service life of the pump is increased and its production and assembly simplified.

摘要翻译： 本发明涉及一种用作手持便携式工具如电动链锯等的内燃机中的润滑油泵的泵。 泵包括形成定子的主体和形成转子的主体。 这些主体相对于彼此同轴并具有彼此密封地相对的彼此相对的表面。 螺旋形螺旋槽形成在这些表面中的一个表面上，并且具有连接到吸入连接的输入端和与压力连接连接的输出端。 根据本发明的特征，至少螺旋形壁结构由弹性体制成。 该壁结构限定了螺旋槽并且抵靠与其相对的平滑表面。 通过弹性体的弹性确保了限定螺旋狭槽的相对于相对的表面的壁结构绝对密封的接触接合。 增加了泵的使用寿命，并简化了其生产和组装。

公开(公告)号：US4813391A

公开(公告)日：1989-03-21

申请号：US231904

申请日：1999-08-15

申请人： Werner Geyer ,  Roland Schierling ,  Hans Nickel

发明人： Werner Geyer ,  Roland Schierling ,  Hans Nickel

IPC分类号： F02M59/00 ,  F02B33/28 ,  F02B75/02 ,  F02M59/10 ,  F02M69/10 ,  F04B43/06 ,  F02M37/04 ,  F02M59/20

CPC分类号： F02M59/107 ,  F02B33/28 ,  F02B2075/025

摘要： The invention relates to a fuel injection arrangement wherein the pump piston of the fuel pump is driven by the pressure in the crankcase of the engine. The fuel injection arrangement includes an opening for tapping the crankcase pressure for actuating a diaphragm in the fuel pump. This opening is controlled by a moving part of the engine such as a crank web or the piston. The moving part closes the opening at least for a portion of the time during which injection occurs thereby delaying the onset of injection to permit a complete combustion during the previous combustion cycle.

摘要翻译： 本发明涉及一种燃料喷射装置，其中燃料泵的泵活塞由发动机曲轴箱内的压力驱动。 燃料喷射装置包括用于抽出用于致动燃料泵中的隔膜的曲轴箱压力的开口。 该开口由发动机的运动部件如曲柄腹板或活塞控制。 移动部分至少在喷射发生的一段时间内关闭开口，从而延迟注射开始以允许在先前燃烧循环期间完全燃烧。

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。