公开(公告)号：US10808632B2

公开(公告)日：2020-10-20

申请号：US16026872

申请日：2018-07-03

申请人： Andreas Stihl AG & Co. KG

发明人： Christian Eberle ,  Florian Hoche ,  Stephan Meyer ,  Claus Naegele

IPC分类号： F02B63/02 ,  F02D41/30 ,  F02D35/00 ,  A01G3/08 ,  F02N11/08 ,  F02M7/20 ,  F02M7/22

摘要： A method obtains information for adjusting an adjustable component of a combustion engine drive system of a gardening and/or forestry apparatus. The method includes the steps of: providing a characteristic parameter using a mobile provision device, wherein the characteristic parameter describes a characteristic of an environment of the gardening and/or forestry apparatus; and obtaining the information for adjusting the adjustable component as a function of the provided characteristic parameter.

公开(公告)号：US20120091599A1

公开(公告)日：2012-04-19

申请号：US13267005

申请日：2011-10-06

申请人： Patrick Levien ,  Alexander Kraus

发明人： Patrick Levien ,  Alexander Kraus

IPC分类号： F02M7/12 ,  F02M7/20

CPC分类号： F02M1/02 ,  F02D9/1065 ,  F02D2009/0205 ,  F02D2009/0296 ,  F02D2009/0298

摘要： A carburetor has a throttle element rotatably supported on a throttle shaft and a choke element rotatably supported on a choke shaft. A first coupling element is fixedly connected to the throttle shaft. A second coupling element is connected to the choke shaft. The first and second coupling elements define in a locked position a start position of throttle element and choke element. The locked position is released by rotation of the throttle shaft in opening direction of the throttle element. The locked position is released by rotation of the choke shaft in opening direction of the choke element. One of the first and second coupling elements is an at least partially elastic coupling element. Upon rotation of the choke shaft from the locked position into an open position, the elastic coupling element is elastically deformed and releases the locked position between the first and second coupling elements.

摘要翻译： 化油器具有可旋转地支撑在节流轴上的节流元件和可旋转地支撑在扼流轴上的扼流元件。 第一联接元件固定地连接到节流轴。 第二联接元件连接到阻尼轴。 第一和第二联接元件在锁定位置限定节气门元件和扼流圈元件的起始位置。 通过节气门轴在节流元件的打开方向的旋转来释放锁定位置。 通过阻塞轴在扼流圈元件的打开方向的旋转来释放锁定位置。 第一和第二联接元件中的一个是至少部分弹性的联接元件。 当阻塞轴从锁定位置旋转到打开位置时，弹性联接元件弹性变形并释放第一和第二联接元件之间的锁定位置。

公开(公告)号：US5688443A

公开(公告)日：1997-11-18

申请号：US739615

申请日：1996-10-03

申请人： Mark S. Swanson

发明人： Mark S. Swanson

IPC分类号： F02B63/02 ,  F02M1/10 ,  F02M7/00 ,  F02M7/20 ,  F02M17/04 ,  F02M17/40 ,  F02M19/01

CPC分类号： F02M1/10 ,  F02M17/04 ,  F02M7/20 ,  F02D2200/0606 ,  Y10S261/08

摘要： A temperature compensated carburetor including a composite valve member comprising a bi-metal strip and a gate valve needle for varying the effective flow cross-sectional area of the main and/or idle fuel supply duct to modulate the flow rate of fuel to the carburetor venturi mixing passage. The bi-metal strip generates substantially all of temperature-change-induced movement of the valve needle. The needle may be made of brass or aluminum, or alternatively of plastic material having a much greater coefficient of expansion than the aluminum carburetor body in which it is adjustable mounted such that differential linear expansion and contraction of the valve needle itself, as well as that of the bi-metal, relative to the carburetor body in response to ambient temperature changes varies the flow-controlling cross-sectional area of the fuel duct inversely relative to ambient temperature changes. A needle cylindrical mounting portion at one end is threadably secured in the strip movable free end. A reduced diameter needle body extension extends axially away from the needle mounting end and has cylindrical stem portion slidable in another bore of the carburetor body. The composite valve member is unrestrained in the direction of its movement from the needle free end to the strip fixed end fastened to the carburetor body. The needle free end is thus movable in a fuel feeding control passageway of the fuel duct to thus vary the flow controlling cross-section thereof.

摘要翻译： 一种温度补偿化油器，其包括复合阀构件，其包括双金属条和闸阀针，用于改变主和/或空闲燃料供应管道的有效流动横截面面积，以调节燃料到化油器文丘里管的流量 混合通道。 双金属条基本上产生所有温度变化导致的阀针的移动。 针可以由黄铜或铝制成，或者与具有可调节安装的铝化油器主体相比具有更大的膨胀系数的塑料材料制成，使得阀针本身的差分线性膨胀和收缩以及该 相对于化油器主体响应于环境温度变化，相对于环境温度变化，燃料管道的流量控制横截面面积反向变化。 一端的针状圆柱形安装部分可螺纹地固定在带状可动自由端中。 直径减小的针体延伸部从针安装端轴向延伸，并且具有可在化油器主体的另一孔中滑动的圆柱形杆部。 复合阀构件在其从针自由端移动到固定到化油器主体的条固定端的方向上是不受限制的。 因此，针头自由端能够在燃料管道的燃料供给控制通道中移动，从而改变其流动控制横截面。

公开(公告)号：US5527495A

公开(公告)日：1996-06-18

申请号：US381113

申请日：1995-01-31

申请人： James M. Jones

发明人： James M. Jones

IPC分类号： F02M7/20 ,  F02M17/04 ,  F02M7/16

CPC分类号： F02M7/20 ,  F02M17/04

摘要： A fuel sensing diaphragm and an air sensing diaphragm apply opposing forces to a transfer member. The forces applied by the fuel sensing diaphragm are based upon the flow rate of fuel, and the forces applied by the air sensing diaphragm are based upon the air flow rate through a venturi. The fuel sensing diaphragm, transfer member, and air sensing diaphragm move together as a control unit which controls the amount of free air allowed to enter an air chamber. Free air in the air chamber is bled off across a vacuum orifice connected to a vacuum port below the throttle plate. The air chamber is in fluid communication with a regulator air chamber. The regulator air chamber is separated from a regulator fuel chamber by a regulator diaphragm and plunger. The regulator diaphragm and plunger operates a fuel inlet ball valve which controls the flow of fuel. A regulator diaphragm and plunger operates the fuel inlet valve based on the pressure in the regulator fuel chamber, the pressure in the regulator air chamber, and the force of a regulator spring. Fuel is discharged through a fuel discharge into an accelerated air stream caused by an air orifice. The mixture of accelerated air and discharged fuel enter the main air stream below a throttle plate. Changes in air density are compensated for by an aneroid chamber regulating the pressure differences on the air sensing diaphragm, which alters the forces the air sensing diaphragm applies to the transfer member.

摘要翻译： 燃料感测隔膜和空气感测隔膜对转印构件施加相反的力。 由燃料感测隔膜施加的力基于燃料的流速，并且由空气感测隔膜施加的力基于通过文丘里管的空气流速。 燃料感测隔膜，传递构件和空气感测隔膜一起作为控制单元，其控制允许进入空气室的空气量。 空气室中的空气通过连接到节流板下方的真空端口的真空孔排出。 空气室与调节器空气室流体连通。 调节器空气室通过调节器隔膜和柱塞与调节器燃料室分离。 调节器隔膜和柱塞操作控制燃料流动的燃料入口球阀。 调节器隔膜和柱塞基于调节器燃料室中的压力，调节器空气室中的压力和调节器弹簧的力来操作燃料入口阀。 燃料通过燃料排放物排放到由空气孔引起的加速空气流中。 加速空气和排出的燃料的混合物进入节流板下方的主要空气流。 空气密度的变化通过调节空气感测隔膜上的压力差的无气室来补偿，其改变空气感测隔膜施加到转印构件的力。

公开(公告)号：US4632788A

公开(公告)日：1986-12-30

申请号：US748477

申请日：1985-06-25

申请人： James S. Jones

发明人： James S. Jones

IPC分类号： F02M1/16 ,  F02M3/00 ,  F02M7/20 ,  F02M17/02 ,  F02M7/04

CPC分类号： F02M1/16 ,  F02M17/02 ,  F02M3/005 ,  F02M7/20 ,  Y10S261/39 ,  Y10S261/78

摘要： An improved carburetor is provided wherein a bidirectional passage is provided between an air velocity reader and a location downstream of a throttle. Metered fuel flows into the bidirectional passage adjacent the air velocity reader. Flow direction in the bidirectional passage is dependent on the pressure relationship between the ends of the bidirectional passage.

摘要翻译： 提供了一种改进的化油器，其中在空气速度读取器和节气门下游的位置之间提供双向通道。 计量燃料流入与风速读数器相邻的双向通道。 双向通道中的流动方向取决于双向通道的端部之间的压力关系。

公开(公告)号：US4627401A

公开(公告)日：1986-12-09

申请号：US659430

申请日：1984-10-10

申请人： Burkhard Brandner ,  Helmut Schilly ,  Albert Stubs ,  Dieter Stojek

发明人： Burkhard Brandner ,  Helmut Schilly ,  Albert Stubs ,  Dieter Stojek

IPC分类号： F02M3/07 ,  F02B1/04 ,  F02D9/02 ,  F02M7/20 ,  F02M7/28 ,  F02M9/06 ,  F02M9/10 ,  F02M7/24

CPC分类号： F02M9/106 ,  F02M7/20 ,  F02B1/04 ,  Y10S261/56 ,  Y10S261/74

摘要： A high-velocity carburetor for an Otto engine comprising a slide for changing the cross-section of the suction pipe, a nozzle connection receiving nozzles and a profiled nozzle needle seated on the slide and controlling the cross-section of the nozzle. One object is the precise adjustment of the air admixture and thus an optimum mixture regulation as a function of the most important parameters for the operational conditions. The nozzle connection contains two nozzles, situated coaxially to one another and separated from one another by an intermediate chamber. The intermediate chamber is connected to an outlet channel of a flow control value having a ferromagnetic membrane-like valve plate. The valve plate is operable by two coils opposing each other and being connected to push-pull outputs of a pulse generator with adjustable pulse duty factor. An input channel of the flow control valve is connected with the atmospheric air via an air filter. For the control of the pulse duty factor an address memory is provided which can be addressed by load values, speed values, and temperature values and which contains in the form of a performance characteristic field information values for the pulse duty factor so that the pulse duty factor and thus the air admixture in the intermediate chamber can be adjusted in accordance with said information values.

摘要翻译： 一种用于Otto发动机的高速化油器，包括用于改变吸入管的横截面的滑块，安装在滑块上的喷嘴连接接收喷嘴和异型喷嘴针，并控制喷嘴的横截面。 一个目的是精确调节空气混合物，从而最佳混合调节作为操作条件最重要的参数的函数。 喷嘴连接件包含两个彼此同轴并且通过中间室彼此分离的喷嘴。 中间室连接到具有铁磁膜状阀板的流量控制值的出口通道。 阀板可由彼此相对的两个线圈操作，并连接到具有可调脉冲占空比的脉冲发生器的推挽输出。 流量控制阀的输入通道通过空气过滤器与大气连接。 为了控制脉冲占空因数，提供地址存储器，其可以通过负载值，速度值和温度值来寻址，并且以脉冲占空因数的性能特征场信息值的形式包含脉冲占空比 因此，可以根据所述信息值来调节中间室中的空气混合物。

公开(公告)号：US4593671A

公开(公告)日：1986-06-10

申请号：US704581

申请日：1985-02-22

申请人： Richard K. Boone

发明人： Richard K. Boone

IPC分类号： F02M3/12 ,  F02M7/20 ,  F02M25/06 ,  F02B25/06

CPC分类号： F02M7/20 ,  F02M25/06 ,  F02M3/12 ,  Y02T10/121

摘要： A unique supplemental carburetion device for internal combustion engines producing a primary source of fuel-air mixture for use at idle and low engine speeds resulting in decreased fuel consumption and exhaust emissions comprising a fuel reservoir chamber joined to a source of liquid fuel and determinate fluid communication with a fuel metering chamber. The metering chamber preferably is vented to ambient air pressure contains diaphragm valve means for controlling fluid flow into the metering chamber. Liquid fuel from the metering chamber flows into a nebulizing chamber and is nebulized by interaction with a stream of ambient air or blow-by gases. The fuel-air stream is passed into a venturi throat and vaporized and then passed into an expansion chamber where the stream is expanded under low static gas pressure to a mixture having a pre-determined fuel to air ratio. The mixture exits the device and is delivered into downstream portions of the carburetor throat.

摘要翻译： 一种用于内燃机的独特补充化油装置，其产生用于怠速和低发动机转速的燃料 - 空气混合物的主要来源，导致减少的燃料消耗和废气排放，包括连接到液体燃料源和确定的流体连通的燃料储存室 具有燃料计量室。 计量室优选地被排放到环境空气压力，其包含用于控制流入计量室的流体的隔膜阀装置。 来自计量室的液体燃料流入雾化室，并与环境空气或窜气气体的相互作用雾化。 燃料 - 空气流进入文丘里喉部并蒸发，然后进入膨胀室，在该膨胀室中，气流在低静态气体压力下膨胀至具有预定的燃料与空气的比例的混合物。 混合物离开设备并被输送到化油器喉部的下游部分。

公开(公告)号：US4536356A

公开(公告)日：1985-08-20

申请号：US560980

申请日：1983-12-13

申请人： Ching C. Li

发明人： Ching C. Li

IPC分类号： F02D35/00 ,  F02M9/08 ,  F02M19/10 ,  F02M29/06 ,  F02M69/04 ,  F02M7/20

CPC分类号： F02M9/08 ,  F02D35/00 ,  F02M19/10 ,  F02M29/06 ,  F02M69/04 ,  Y10S261/74 ,  Y10S261/82

摘要： A carburetor for an internal combustion engine. The carburetor has an outer body defining a first venturi and having an inlet and an outlet. There is a first inner body located in the outer body and defining a second venturi and having an inlet and an outlet. A throttle valve controls air supply to the inlets of the inner and outer bodies. Air is agitated as it flows through the bodies. An injector nozzle is positioned to feed fuel to the second venturi. A valve controls fuel supply through the injector nozzle and sensor means determines movement of the valve. An idle jet feeds fuel to the second venturi downstream of the jet nozzle.

摘要翻译： 用于内燃机的化油器。 化油器具有限定第一文丘里管并具有入口和出口的外部主体。 存在位于外体中并限定第二文丘里管并具有入口和出口的第一内体。 节流阀控制对内部和外部主体的入口的空气供应。 空气在流过身体时会激动起来。 喷射器喷嘴定位成将燃料供给到第二文丘里管。 阀控制通过喷射器喷嘴的燃料供应，传感器装置确定阀的运动。 空转喷嘴将燃料送入喷嘴下游的第二文丘里管。

公开(公告)号：US4463724A

公开(公告)日：1984-08-07

申请号：US366989

申请日：1982-04-09

申请人： Kastuyoshi Fukaya ,  Akira Tokuda ,  Hitoshi Hirano

发明人： Kastuyoshi Fukaya ,  Akira Tokuda ,  Hitoshi Hirano

IPC分类号： F02D33/00 ,  F02D41/14 ,  F02M7/24 ,  F02M7/20

CPC分类号： F02D33/00 ,  F02D41/1484 ,  F02M7/24

摘要： A method for controlling the air-fuel ratio in a carburetor which prevents fuel from flowing into an air bleed passage at nearly fully closed position of the tapered needle valve fitted with the air bleed passage by controlling the step motor connected to the needle valve so as to maintain the minimum amount of bleed air at a constant level. In another aspect, at nearly fully closed position of the needle valve, this invention is effective to prevent fuel from flowing into the air bleed passage by continously driving the step motor in a direction of its fully closed position to axially vibrate the needle valve so that the minimum amount of bleed air may be maintained at a constant level. In a further aspect, at nearly fully closed position of the needle valve, this invention is effective to determine the relation between the amount of stroke of the needle valve and the amount of bleed air to flat characteristics by continuously driving the step motor in a direction of the fully closed position of the needle valve so that the minimum amount of bleed air may be maintained at such a level that the fuel is prevented from flowing into the air bleed passage.

摘要翻译： 一种用于控制化油器中的空燃比的方法，其通过控制连接到针阀的步进电机来防止燃料流入装配有排气通道的锥形针阀的几乎完全关闭位置的排气通道，从而 以将最小量的排气保持在恒定的水平。 在另一方面，在针阀的几乎完全关闭的位置，本发明通过在其完全关闭位置的方向上连续驱动步进马达来轴向地振动针阀，从而有效地防止燃料流入排气通道，使得 可以将最小量的排出气体保持在恒定水平。 在另一方面，在针阀的几乎完全关闭位置，本发明通过将步进电动机沿方向连续驱动来确定针阀的行程量与排气量与平坦特性之间的关系是有效的 的针阀的完全关闭位置，使得最小量的排气可以保持在防止燃料流入排气通道的水平。

公开(公告)号：US4411233A

公开(公告)日：1983-10-25

申请号：US169843

申请日：1980-07-17

申请人： Jacques Chenet ,  Michel Pierlot

发明人： Jacques Chenet ,  Michel Pierlot

IPC分类号： F02M7/20 ,  F02M9/10 ,  F02M7/12

CPC分类号： F02M9/106 ,  F02M7/20 ,  Y10S261/74 ,  Y10S261/82

摘要： A constant depression carburettor has an auxiliary throttle member associated with a sensor which delivers a signal representative of the position of the auxiliary throttle member. A solenoid valve is actuated by pulses received from a control circuit which receives input signals from sensor. The solenoid valve meters the fuel delivered to the intake passage via a discharge orifice located at the throat of a venturi limited by a swelling of the intake passage and by the throttle.

摘要翻译： 恒定凹陷的化油器具有与传感器相关联的辅助节流部件，传感器传递代表辅助节流部件的位置的信号。 电磁阀由从接收来自传感器的输入信号的控制电路接收的脉冲启动。 电磁阀通过位于文丘里管喉口处的排放孔来计量输送到进气通道的燃料，该排气孔受到进气通道的膨胀和油门的限制。