公开(公告)号：US6135429A

公开(公告)日：2000-10-24

申请号：US185692

申请日：1998-11-04

Applicant: John C. Woody

Inventor： John C. Woody

IPC: F02M1/08 ,  F02M1/16 ,  F02M17/04

CPC classification number: F02M17/04 ,  F02M1/08 ,  F02M1/16 ,  Y10S261/68

Abstract: A carburetor having a fuel pump, a fuel metering diaphragm defining a fuel chamber on one side of the diaphragm and an air chamber on the opposite side of the diaphragm vented to the atmosphere, and a second diaphragm defining a first chamber on one side of the second diaphragm in communication with the carburetor fuel pump and a valve actuated by the second diaphragm to control the application of engine crankcase pressure pulses to the fuel metering diaphragm in response to the pressure at the carburetor fuel pump. The second diaphragm is yieldably biased to position the valve in a first position and upon cranking for initially starting the engine, pressure pulses from the engine crankcase are communicated to the air chamber of the fuel metering diaphragm. The pressure pulses from the engine crankcase act on the fuel metering diaphragm causing it to fluctuate and thereby increase the quantity of fuel mixed with the air flowing through the carburetor to facilitate staring the engine. After the engine is started and is running, the carburetor fuel pump output pressure increases and acts on the second diaphragm from within the first chamber to displace it and move the valve to its second position to prevent the pressure pulses from the engine crankcase from materially affecting the fuel metering diaphragm to permit conventional operation of the carburetor.

Abstract translation: 具有燃料泵的化油器，在所述隔膜的一侧上限定燃料室的燃料计量隔膜和通向所述大气的所述膜的相对侧上的空气室，以及限定在所述隔膜的一侧上的第一室的第二隔膜 与化油器燃料泵连通的第二隔膜和由第二隔膜致动的阀，以响应于化油器燃料泵处的压力来控制发动机曲轴箱压力脉冲施加到燃料计量隔膜。 第二隔膜可屈服地偏置以将阀定位在第一位置，并且在起动时用于初始起动发动机，来自发动机曲轴箱的压力脉冲与燃料计量隔膜的气室连通。 来自发动机曲轴箱的压力脉冲作用在燃料计量隔膜上，使其波动，从而增加与流过化油器的空气混合的燃料量，以便使发动机凝视。 在发动机启动并运行之后，化油器燃料泵的输出压力增加并且在第一腔室内作用在第二隔膜上以使其移位并将阀移动到其第二位置，以防止来自发动机曲轴箱的压力脉冲实质上影响 燃料计量隔膜允许化油器的常规操作。

公开(公告)号：US6135428A

公开(公告)日：2000-10-24

申请号：US141639

申请日：1998-08-27

Applicant: Harald Schliemann ,  Hans Nickel

Inventor： Harald Schliemann ,  Hans Nickel

IPC: B27B17/00 ,  F02B63/02 ,  F02B75/02 ,  F02M1/02 ,  F02M1/08 ,  F02M17/04 ,  F02M19/00 ,  F02M7/12

CPC classification number: B27B17/00 ,  F02M1/02 ,  F02M17/04 ,  F02M19/00 ,  F02B2075/025 ,  F02B2075/027 ,  F02B63/02

Abstract: A diaphragm carburetor for a combustion engine having a manual starter has a housing and a control chamber arranged in the housing and filled with fuel. A suction channel is arranged in the housing and has a venturi section. A throttle flap is rotatably supported in the suction channel downstream of the venturi section in the flow direction of combustion air sucked into the suction channel. A main valve path connects a control chamber to the venturi section. An idle valve path connects the control chamber to the suction channel and opens into the suction channel at a location downstream of the throttle flap in the flow direction. A choke flap is rotatably supported in the suction channel and positioned upstream of the venturi section. The choke flap has identical cold start and warm start positions and allows a flow volume of combustion air into the suction channel sustaining engine operation after the engine has been started.

Abstract translation: 用于具有手动启动器的内燃机的隔膜式化油器具有壳体和设置在壳体中并充满燃料的控制室。 抽吸通道布置在壳体中并具有文氏管部分。 在文丘里管部分下游的吸入通道中，在被吸入吸入通道的燃烧空气的流动方向上可旋转地支撑着节流阀。 主阀通道将控制室连接到文氏管部分。 空转阀通道将控制室连接到吸入通道，并且在流动方向上在节流阀的下游位置处打开到吸入通道。 扼流圈可旋转地支撑在吸入通道中并且位于文丘里管部分的上游。 扼流片具有相同的冷启动和暖启动位置，并且允许在发动机起动之后燃烧空气的流量进入吸入通道维持发动机运行。

公开(公告)号：US6000683A

公开(公告)日：1999-12-14

申请号：US979581

申请日：1997-11-26

Applicant: James E. Van Allen

Inventor： James E. Van Allen

IPC: F02M1/08 ,  F02D11/02 ,  F02M1/02

CPC classification number: F02M1/02 ,  F02D11/02

Abstract: A control mechanism for a carburetor having a throttle valve and a choke valve each having at least a cold-starting position and a full-speed position. The throttle valve is spring biased toward its third, low idle position, and the choke valve is spring biased toward its full-speed open position. When the choke valve is moved from its open position toward its cold start closed position a fast idle lever associated with the choke valve engages, via releasable latch parts, another lever associated with the throttle valve. The interengaging latch parts of these levers hold both valves in their respective cold-starting positions in opposition to the biasing springs. These latch levers can be released by operator actuation of the throttle valve control, thereby causing the choke valve to be automatically returned to its open position by its biasing spring, or, alternatively, the choke valve can be moved independently to its full-speed position. One of these latch levers has a row of fine ratchet teeth, and the other has a pawl selectively engaging whichever ratchet tooth becomes aligned therewith when the latch levers are operator actuated to their respective cold start positions. Upon release of operator actuating force, this feature prevents most, if not all of the retrograde movement of the choke and throttle valves out of their design cold start positions, despite operating slack in the latch system due to manufacturing tolerance stack-up in the various parts of the control mechanism in their assembly and operation.

Abstract translation: 一种具有节流阀和阻流阀的化油器的控制机构，其具有至少冷启动位置和全速位置。 节流阀被弹簧偏置到其第三，低怠速位置，并且阻风门被弹簧偏压到其全速打开位置。 当阻流阀从其打开位置移动到其冷启动关闭位置时，与扼流阀相关联的快速空转杆通过可释放的闩锁部件接合与节流阀相关联的另一个杆。 这些杠杆的相互接合的闩锁部分将两个阀保持在与偏置弹簧相对的各自的冷起始位置。 这些闩锁杆可以通过操作者致动节气门控制来释放，从而使得阻塞阀通过其偏压弹簧自动返回到其打开位置，或者可选地，阻气阀可以独立地移动到其全速位置 。 这些闩锁杆中的一个具有一排精细的棘轮齿，另一个具有棘爪，当棘爪被操作者致动到它们各自的冷起始位置时，棘爪选择性地啮合，无论哪个棘齿与其对准。 在释放操作者致动力时，尽管操作松弛在闩锁系统中，但是由于各种不同的制动公差叠加，该特征防止了扼流器和节流阀的大部分（如果不是全部）的逆行运动脱离其设计冷启动位置 控制机构的部件组装和运行。

公开(公告)号：US5194186A

公开(公告)日：1993-03-16

申请号：US807253

申请日：1991-12-13

Applicant: Dag H. Edlund

Inventor： Dag H. Edlund

IPC: F02D9/10 ,  F02M1/02 ,  F02M1/08 ,  F02M1/14 ,  F02M17/04 ,  F16K1/22

CPC classification number: F02M1/14 ,  F02M17/04 ,  Y10T137/7891

Abstract: The starting of an i.c. engine usually takes place by carrying out the necessary number of starting attempts with the carburetor choked in order to obtain an ignition. After that, the choke valve (15,23,24) is opened and the engine can be started by making more starting attempts. Thus, the engine does not continue to run when the choke is on. In order to simplify the starting procedure of e.g. a chain saw, the carburetor can be provided with an elastic choke valve. The elastic valve makes the engine start even though the choke valve is closed as the choke valve will yield to the air stream (FIG. 1) and furnish fuel air mixture to the engine. With the engine running, the choke valve can then be opened.

Abstract translation: 启动i.c. 发动机通常通过执行必要数量的起动尝试，化油器窒息以获得点火。 之后，打开阻气阀（15,23,24），通过进行更多的起动尝试来启动发动机。 因此，当扼流器打开时，发动机不会继续运行。 为了简化例如 链锯，化油器可以设有弹性阻风阀。 即使阻塞阀关闭，弹簧阀使发动机起动，因为阻塞阀将产生气流（图1），并向发动机提供燃料空气混合物。 随着发动机运转，可以打开节流阀。

公开(公告)号：US4986229A

公开(公告)日：1991-01-22

申请号：US434298

申请日：1989-11-13

Applicant: Shin Suzuki ,  Shuichi Sasaki ,  Masao Suzuki

Inventor： Shin Suzuki ,  Shuichi Sasaki ,  Masao Suzuki

IPC: F02M1/08 ,  F02M1/04

CPC classification number: F02M1/04

Abstract: An apparatus for supplying start fuel for a carburetor in which an internal combustion engine has a fly-wheel with a magneto incorporated therewith. An intake air passage has an electromagnetic valve and this valve is actuated by an output signal of a primary coil of the fly-wheel magneto. In one embodiment, the electromagnetic valve is actuated by an output difference between an output signal of a primary coil produced when a start motor is rotated and an output signal of the primary coil produced when the engine is rotated.

公开(公告)号：US4269792A

公开(公告)日：1981-05-26

申请号：US120973

申请日：1980-02-13

Applicant: Jerry H. Winkley

Inventor： Jerry H. Winkley

IPC: F02M1/10 ,  F02M1/08

CPC classification number: F02M1/10 ,  Y10S261/84 ,  Y10T137/7062

Abstract: A carburetor for an internal combustion engine has a choke valve mounted in an air induction passage. A choke lever is attached to one end of a choke shaft on which the choke valve is mounted. An improvement comprises a tamper resistant temperature responsive mechanism for controlling opening of the choke valve as the engine warms up. The mechanism includes a housing, a choke countershaft, one end of which extends into the housing, and a cover attachable to the housing and containing a thermostatic coil. A lever is attached to the one end of the counter shaft and the lever has a tang contacted by one end of the thermostatic coil. A substantially straight, nondeformable link connects the choke countershaft and choke lever. The lever within the choke housing is adjustable to position the lever so opening of the choke valve is properly controlled and the setting of the lever cannot be tampered with once the cover is attached to the choke housing.

Abstract translation: 用于内燃机的化油器具有安装在空气导入通道中的阻流阀。 扼流杆连接在其上安装有阻流阀的节流轴的一端。 改进包括防篡改温度响应机构，用于在发动机加热时控制扼流阀的打开。 该机构包括壳体，扼流器中间轴，其一端延伸到壳体中，以及可附接到壳体并包含恒温线圈的盖。 杠杆连接到副轴的一端，杠杆具有与恒温线圈的一端接触的脚。 一个基本上直的不可变形的连杆连接扼流圈中间轴和扼流杆。 扼流器外壳内的控制杆是可调节的，以便定位杆，因此阻塞阀的打开被适当地控制，并且一旦盖子连接到扼流器壳体上，就不能篡改控制杆的设定。

公开(公告)号：US3872851A

公开(公告)日：1975-03-25

申请号：US36505773

申请日：1973-05-30

Applicant: TOYOTA MOTOR CO LTD

Inventor： MATSUMOTO HIROFUMI ,  NAKADA MASAHIKO

IPC: F02D33/00 ,  F02M1/04 ,  F02M1/10 ,  F02M1/08

CPC classification number: F02M1/04

Abstract: In providing a separate supply of fuel to an internal combustion engine when it is started up from a cold condition or as it idles following a cold start up, an additional supply of fuel is withdrawn from the engine carburetor float chamber and is passed through a valve operated fuel well into a fuel chamber. The fuel well is opened when the intake manifold of the engine is at atmospheric pressure for passing fuel into the fuel chamber. A fuel line connects the fuel chamber to the venturi tube for supplying fuel to the engine and a branch pipe, communicating with the fuel line, adds air to the fuel as it is directed into the venturi tube. The passage of fuel through the fuel line is discontinued in response to a temperature sensing arrangement which checks the engine temperature and, when a predetermined temperature level is reached, cuts off the flow through the fuel line to the venturi tube.

Abstract translation: 在内燃机从冷启动时或在冷启动时空闲时向内燃机提供单独的燃料供应，附加的燃料供应从发动机化油器浮子室中排出并通过阀 操作燃料进入燃料室。 当发动机的进气歧管处于大气压力以使燃料进入燃料室时，燃油井打开。 燃料管线将燃料室连接到文丘里管，用于向发动机供应燃料，并且与燃料管线连通的分支管道在将燃料引入文丘里管时向燃料添加空气。 响应于检测发动机温度的温度感测装置停止燃料通过燃料管线的通道，并且当达到预定温度水平时，将通过燃料管线的流量切断到文丘里管。

公开(公告)号：US1929010A

公开(公告)日：1933-10-03

申请号：US51503731

申请日：1931-02-11

Applicant: OTTO WINTER

Inventor： OTTO WINTER

IPC: F02M1/08

CPC classification number: F02M1/08

公开(公告)号：US10330038B2

公开(公告)日：2019-06-25

申请号：US15886705

申请日：2018-02-01

Applicant: Andreas Stihl AG & Co. KG

Inventor： Andreas Baehner ,  Michael Dietenberger ,  Martin Kiesner ,  Florian Hoche ,  Klaus Geyer ,  Steffen Bantle ,  Friedrich Hollmeier ,  Frederik Herrmann ,  Jochen Gantert ,  Karsten Schmidt

IPC: F02D41/06 ,  F02D41/24 ,  F02D41/30 ,  F02M7/10 ,  F02D31/00 ,  F02D35/00 ,  F02M1/08 ,  F02D1/00 ,  F02D19/06

Abstract: The invention relates to a method for adapting the composition of a mixture of fuel and combustion air. The mixture is supplied to a combustion chamber of a mixture-lubricated combustion engine in a work apparatus. The fuel is supplied to the combustion engine via a controlled fuel valve. In an operating state (I) of the combustion engine, the quantity of fuel is metered by the fuel valve. For the purpose of adapting the composition of the mixture, the combustion engine is shifted into a special operating state (II) which differs from the normal operating state (I). After starting, the combustion engine is operated in a first rotational speed range (B) for a prespecified operating time (Tmin), wherein, after the prespecified operating time (Tmin) has elapsed, the operating state (II) for adapting the composition of the mixture is initiated by a prespecified user action.

公开(公告)号：US10240543B2

公开(公告)日：2019-03-26

申请号：US15258679

申请日：2016-09-07

Applicant: Kohler Co.

Inventor： Michael Robert Kleczewski ,  Michael J. Tursky ,  Pezaan Sham Patrawala ,  Awadhesh Kumar Thakur

IPC: F02M1/02 ,  F01P3/00 ,  F02D41/06 ,  F02D31/00 ,  F02M1/08 ,  F02D41/00 ,  F02D41/14 ,  F02M1/10 ,  F02D1/02 ,  F02P1/08

Abstract: An integrated ignition and electronic auto-choke module for an internal combustion engine and an internal combustion engine including the same. In one aspect, the module includes a housing that is configured to be mounted to an engine block of an internal combustion engine. The housing may contain at least a portion of a first temperature sensor that measures a first temperature indicative of an engine temperature. The housing may also contain a controller and at least a portion of an ignition circuit. The controller may be coupled to the first temperature sensor and configured to determine a starting position of a choke valve based on the first temperature and operate an actuator to move the choke valve into the starting position accordingly.