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1. 发明申请

US20230087858A1 LOW PRESSURE FUEL AND AIR CHARGE FORMING DEVICE FOR A COMBUSTION ENGINE 有权
公开(公告)号：US20230087858A1
公开(公告)日：2023-03-23
申请号：US17988946
申请日：2022-11-17
申请人： Walbro LLC
发明人： Gary J. Burns , Andreas D. M. Dixon , Eric G. Zbytowski , Albert L. Sayers , Justin T. Dolane , David L. Speirs , William E. Galka , Duried F. Rabban , Bradley J. Roche
IPC分类号： F02M69/04 , F02M19/10 , F02M19/02 , F02M19/08 , F02M7/18 , F02D9/10 , F02M63/00
摘要： A throttle body assembly for a combustion engine includes a throttle body having a pressure chamber including a supply of liquid fuel, and a throttle bore with an inlet through which air is received. A throttle valve is carried by the throttle body with a valve head movable relative to the throttle bore. A metering valve is coupled to the throttle body, and has a valve element that is movable between open and closed positions. A boost venturi is located in the throttle bore and has an inner passage that is open at both ends to the throttle bore. The boost venturi has an opening through which fuel flows into the inner passage when the valve element is in the open position, wherein fuel flows from the pressure chamber to the metering valve under the force of gravity or under a pressure of less than 6 psi.

2. 发明申请

US20200032743A1 THROTTLE AND CHOKE CONTROL LINKAGE MECHANISM OF DIAPHRAGM TYPE CARBURETOR 审中-公开
公开(公告)号：US20200032743A1
公开(公告)日：2020-01-30
申请号：US16522670
申请日：2019-07-26
申请人： MEIYING XUE
发明人： Meiying XUE , Yongcheng JIA
IPC分类号： F02M17/04 , F02M1/02 , F02M3/02 , F02M7/18 , F02M7/22
摘要： The present disclosure discloses a throttle and choke control linkage mechanism of carburetor including a choke shaft rotatably installed with a choke valve, a throttle shaft rotatably installed with a throttle, a choke handle fixed on the choke shaft and configured for rotating the choke valve from a fully opened position to a fully closed position, a throttle grip fixed on the throttle shaft and configured for rotating the throttle from an idling position to an opened position, and a fast idle handle rotatably around the choke shaft. The choke handle is further provided with a first surface which is able to link with the throttle grip. When the choke handle is linked with the throttle grip, the choke valve is at the fully closed position, and the throttle is opened with an angle larger than the idling position.

3. 发明授权

US07744066B2 Mechanical air fuel ratio regulating carburetor with fuel pressure regulation 失效
标题翻译：机械空燃比调节化油器与燃油压力调节
公开(公告)号：US07744066B2
公开(公告)日：2010-06-29
申请号：US11722591
申请日：2005-08-18
申请人： Anthony John Williams
发明人： Anthony John Williams
IPC分类号： F02M7/18
CPC分类号： F02M7/225 , F02M17/12 , F02M19/00
摘要： A carburetor includes an air inlet with a mechanically adjustable air valve, a mechanically adjustable atomizer discharging in the air inlet, and a mechanical metering device connected with the air valve and the atomizer, maintaining a stoichiometric ratio between amounts of air and fuel. Additionally, the carburetor includes a fuel pressure regulating unit to regulate the fuel pressure of fuel injected in the air inlet, based on one or more dynamic engine load parameters under which a vacuum signal in the air inlet is obtained via a vacuum intake conduit discharging into the air inlet. By regulating the fuel pressure also in dependence of the measured vacuum signal, the emission of unburned fuel is reduced under certain dynamic conditions of the combustion engine.
摘要翻译：化油器包括具有机械可调节空气阀的空气入口，在空气入口中排放的机械可调雾化器，以及与空气阀和雾化器连接的机械计量装置，保持空气和燃料的量之间的化学计量比。此外，化油器包括燃料压力调节单元，其基于一个或多个动态发动机负载参数来调节喷射在进气口中的燃料的燃料压力，在该动态发动机负载参数下，通过真空吸入管线排出空气入口中的真空信号进气口。通过根据所测量的真空信号来调节燃料压力，在燃烧发动机的某些动态条件下，未燃燃料的排放也减少。

4. 发明授权

US5776377A Metering block for carburetors 失效
标题翻译：化油器计量块
公开(公告)号：US5776377A
公开(公告)日：1998-07-07
申请号：US713173
申请日：1996-09-12
申请人： Louis E. Hammel, Jr.
发明人： Louis E. Hammel, Jr.
IPC分类号： F02M7/02 , F02M19/02 , F02M7/18
CPC分类号： F02M19/0225 , F02M7/02
摘要： A metering block having at least one removable jet cartridge is provided for replacing the physical and functional operation of the standard metering block for use with the carburetor and fuel bowl of a conventional internal combustion engine. The metering block has openings in the top of the block at an angle from vertical for receiving the jet cartridges. The jet cartridge is configured to utilize the standard fuel jets used with the standard metering block to maintain the same fuel metering characteristics as the standard metering block. The jet cartridge is positioned at an angle within the metering block to allow the jet cartridge and fuel jet to be removed and replaced from the carburetor without the need to remove the fuel bowl or metering block from the carburetor or fuel to be drained to obtain access to the fuel jet as is the case in the standard metering block design.
摘要翻译：提供具有至少一个可拆卸喷射墨盒的计量块，用于替换用于常规内燃机的化油器和燃料碗的标准计量块的物理和功能操作。计量块在块的顶部具有与垂直方向成一定角度的开口，用于接收喷射筒。喷墨盒被配置为利用与标准计量块一起使用的标准燃料喷嘴来维持与标准计量块相同的燃料计量特性。喷射墨盒定位在计量块内的一定角度，以允许喷射墨盒和燃料喷射从化油器移除并更换，而不需要从要排出的化油器或燃料中取出燃料碗或计量块以获得通路与标准计量块设计中的情况相同。

5. 发明授权

US5626118A Piston valve type carburetor 失效
标题翻译：活塞阀式化油器
公开(公告)号：US5626118A
公开(公告)日：1997-05-06
申请号：US560644
申请日：1995-11-20
申请人： Toshio Sugii
发明人： Toshio Sugii
IPC分类号： F02M7/11 , F02D45/00 , F02M7/12 , F02M7/127 , F02M7/17 , F02M7/18
CPC分类号： F02M7/17
摘要： The position located above the upper surface of fuel in a float chamber is communicated with the position where the sectional area of a suction passage varies or the position in the vicinity of the foregoing position via a negative pressure introduction passage. The intermediate part of the negative pressure passage is opened or closed by a solenoid valve adapted to be controlled by electronic controlling means. An opening/closing rate of a solenoid valve is determined by inputting informations from a temperature sensor sensing the atmospheric temperature as well as a pressure sensor sensing the atmospheric pressure into the electronic controlling means. The float chamber is normally communicated with the atmosphere via an atmosphere passage. As an altitude becomes high more and more, the valve opening time for the negative pressure introduction passage is elongated and the differential pressure between the float chamber and the suction passage is reduced, causing a quantity of ejected fuel to be reduced. In addition, as the atmospheric temperature becomes high more and more, the valve opening time for the negative pressure introduction passage is elongated and the differential pressure between the float chamber and the suction chamber is reduced, and a quantity of ejected fuel is reduced so that the air fuel ratio is corrected by adjusting a quantity of fuel to be ejected.
摘要翻译：位于浮子室内的燃料上方的位置与吸入通路的截面积变化的位置或通过负压导入通路与前述位置附近的位置连通。负压通道的中间部分由适于由电子控制装置控制的电磁阀打开或关闭。通过从感测大气温度的温度传感器输入信息以及感测大气压力的压力传感器进入电子控制装置来确定电磁阀的打开/关闭速率。浮子室通常通过大气通道与大气连通。随着高度越来越高，负压导入通路的开阀时间变长，浮子室与吸入通路之间的压差降低，导致喷射燃料量的减少。此外，随着大气温度越来越高，负压导入通路的开阀时间变长，浮子室与吸入室之间的压差降低，喷射燃料量减少，通过调整喷出的燃料量来校正空燃比。

6. 发明授权

US5377650A Low emission engines 失效
标题翻译：低排放发动机
公开(公告)号：US5377650A
公开(公告)日：1995-01-03
申请号：US142767
申请日：1993-10-26
申请人： Donald W. Warner
发明人： Donald W. Warner
IPC分类号： F02M17/38 , F01N3/22 , F01N3/30 , F01N3/34 , F02M3/08 , F02M7/08 , F02M7/12 , F02M7/18 , F02M7/20 , F02M25/07 , F02M25/06
CPC分类号： F02M7/18 , F01N3/22 , F01N3/227 , F01N3/30 , F01N3/34 , F02M26/21 , F02M3/08 , F02M7/08 , Y02T10/20
摘要： A small engine emissions control system with a float bowl carburetor minimizing CO emissions by tailoring fuel delivery to engine demand over a broad range of operating speeds and conditions, an exhaust gas recirculation valve to reduce NO.sub.x emissions and a pulse valve mixing fresh air with hot exhaust gases to reduce HC and CO emissions.
摘要翻译：具有浮盆式化油器的小型发动机排放控制系统，通过在广泛的运行速度和条件下调节燃油输送到发动机需求，最大限度地减少CO排放，减少NOx排放的废气再循环阀，以及将新鲜空气与热排气混合的脉冲阀气体以减少HC和CO排放。

7. 发明授权

US4747385A Air-fuel ratio control system for an automotive engine 失效
标题翻译：汽车发动机空燃比控制系统
公开(公告)号：US4747385A
公开(公告)日：1988-05-31
申请号：US936474
申请日：1986-11-26
申请人： Kunihiro Abe
发明人： Kunihiro Abe
IPC分类号： F02D41/00 , F02D41/14 , F02D45/00 , F02M7/18
CPC分类号： F02D41/1495 , F02D41/1474
摘要： An air-fuel ratio control system has a system for updating data stored in a table at a steady state of engine operation in accordance with output voltage of an O.sub.2 -sensor. When the output voltage deviates from a reference voltage corresponding to a stoichiometric air-fuel ratio during a predetermined period, the data is rewritten to a fail safe value.
摘要翻译：空燃比控制系统具有根据O 2传感器的输出电压来更新在发动机运行的稳定状态下存储在工作台中的数据的系统。当在预定期间内输出电压偏离对应于理论空燃比的参考电压时，数据被重写为故障安全值。

8. 发明授权

US4709677A Fuel control system for air-fuel mixture supply devices 失效
标题翻译：空气燃料混合物供应装置燃油控制系统
公开(公告)号：US4709677A
公开(公告)日：1987-12-01
申请号：US880877
申请日：1986-07-01
申请人： Tetsuo Muraji
发明人： Tetsuo Muraji
IPC分类号： F02M7/12 , F02M3/09 , F02M7/17 , F02M7/18 , F02M7/20 , F02M7/24 , F02M17/08 , F02M19/10
CPC分类号： F02M17/08 , F02M19/10 , F02M3/09 , F02M7/17 , F02M7/20 , F02M7/24
摘要： In order to insure that, even when there arises a change in the rate of air flowing through an intake mixture passageway, the air-fuel ratio of the mixture which is to be supplied to an engine is always kept constant, the fuel control system comprises: an intake mixture passageway having a first negative pressure generating section and a second negative pressure generating section provided upstream of the first negative pressure generating section for generating a negative pressure weaker than that in the first negative pressure generating section; a fuel passageway having its one end opening in the first negative pressure generating section and its other end connected to a float chamber via a fuel metering jet; an electromagnetic valve for controlling the rate of the fuel flowing through the fuel passageway; a negative pressure passageway having its one end opening in the second negative pressure generating section and having its other end connected to the fuel passageway at a site located between the fuel metering jet and the electromagnetic valve; and a level detecting means for detecting whether or not the fuel column formed within the negative pressure passageway is at a preset level and capable of generating an electric signal to control the operation of the electromagnetic valve. The first and second negative pressure generating sections are each constructed by a fixed and/or a variable venturi.
摘要翻译：为了确保即使出现通过进气混合通道的空气流速发生变化，则要供给发动机的混合物的空燃比总是保持恒定，燃料控制系统包括：具有第一负压产生部分和第二负压产生部分的进气混合通道，设置在第一负压产生部分的上游，用于产生比第一负压产生部分中的负压更弱的负压; 燃料通道，其一端开口在第一负压产生部分中，另一端通过燃料计量喷嘴连接到浮子室; 用于控制流过燃料通道的燃料的速率的电磁阀; 负压通道，其一端开口在第二负压产生部分中，并且其另一端在位于燃料计量射流和电磁阀之间的位置处连接到燃料通道; 以及电平检测装置，用于检测在负压通道内形成的燃料柱是否处于预设水平，并且能够产生电信号以控制电磁阀的操作。第一和第二负压产生部分均由固定和/或可变文丘里管构成。

9. 发明授权

US4613469A Carburetor for internal combustion engines 失效
标题翻译：内燃机用化油器
公开(公告)号：US4613469A
公开(公告)日：1986-09-23
申请号：US573104
申请日：1984-01-23
申请人： Rex W. Peterson
发明人： Rex W. Peterson
IPC分类号： F02M7/18 , F02M7/20 , F02M19/02 , F02M7/04
CPC分类号： F02M19/021 , F02M7/18 , F02M7/20
摘要： A carburetor includes a metering assembly in which the effective area of the metering orifice varies in direct proportion to movement of a vlave stem. Primary and secondary fuel circuits are controlled by the assembly in response to air flow through the carburetor to maintain an optimum fuel-to-air ratio under various load and atmospheric conditions.
摘要翻译：化油器包括计量组件，其中计量孔口的有效面积与浮子杆的运动成正比地变化。一次和二次燃料回路由组装响应于通过化油器的空气流动来控制，以在各种负载和大气条件下保持最佳的燃料 - 空气比。

10. 发明授权

US4548179A Air-fuel ratio control system 失效
标题翻译：空燃比控制系统
公开(公告)号：US4548179A
公开(公告)日：1985-10-22
申请号：US623219
申请日：1984-06-21
申请人： Masakazu Ninomiya , Masaya Fujimoto
发明人： Masakazu Ninomiya , Masaya Fujimoto
IPC分类号： F02D33/00 , F02D41/00 , F02D41/14 , F02D41/24 , G01N27/41 , F02M7/18
CPC分类号： F02D41/2496 , F02D41/1476
摘要： An air-fuel ratio control system for an internal combustion engine in which the air-fuel ratio of the engine is controlled by feedback using an air-fuel ratio sensor of a critical current type. When the air-fuel ratio is not controlled by such feedback, the voltage applied to the air-fuel ratio sensor is reduced or cut off to reduce physical deterioration thereof.
摘要翻译：一种用于内燃机的空燃比控制系统，其中通过使用临时电流型的空燃比传感器进行反馈来控制发动机的空燃比。当空燃比不被这种反馈控制时，施加到空燃比传感器的电压被减少或切断以减少其物理劣化。

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