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1. 发明专利

JP2003343359A Carburetor 审中-公开
标题翻译： CARBURETOR
公开(公告)号：JP2003343359A
公开(公告)日：2003-12-03
申请号：JP2002156863
申请日：2002-05-30
申请人： Zama Japan Kk , ザマ・ジャパン株式会社
发明人： NONAKA TAKUMI
IPC分类号： F02M1/02 , F02M1/04 , F02M7/04 , F02M7/18 , F02M17/04
CPC分类号： F02M17/04 , F02M1/04 , F02M7/18 , Y10S261/74
摘要： PROBLEM TO BE SOLVED: To stably warm up an engine and operate the engine at a desired engine speed by supplying the proper amount of fuel at the start of the engine or in a specific speed range.
SOLUTION: A first fuel system F
1 is provided in which fuel in a constant fuel chamber 18 is fed to an intake passage 2 as it is metered with a metering needle 32 operating in conjunction with a throttle valve 5. A second fuel system F
2 is provided in which the fuel pressurized by a fuel pump 8 is fed to the intake passage 2 under control of an electromagnetically driven control valve 52. The pressurized fuel under control of the control valve 52 is supplied to control engine speed, either at the start or warm-up of the engine or in the specific speed range, to maintain the desired engine speed.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：通过在发动机起动时或在特定速度范围内供应适量的燃料，稳定地预热发动机并以期望的发动机速度操作发动机。
解决方案：提供第一燃料系统F 1 ，其中恒定燃料室18中的燃料被供给到进气通道2，因为它与计量针头32一起运行，计量针头32与提供了第二燃料系统F 2 ，其中由燃料泵8加压的燃料在电磁驱动的控制阀52的控制下被供给到进气通道2.加压燃料在供给控制阀52的控制，以控制发动机的速度，无论是在发动机的起动还是预热或在特定的速度范围内，以保持所需的发动机转速。版权所有（C）2004，JPO

2. 发明专利

JP2003343357A Idle fuel adjuster of carburetor 审中-公开
标题翻译：卡车空调燃油调节器
公开(公告)号：JP2003343357A
公开(公告)日：2003-12-03
申请号：JP2002151880
申请日：2002-05-27
申请人： Zama Japan Kk , ザマ・ジャパン株式会社
发明人： IWASA KOJI , NONAKA TAKUMI
IPC分类号： F02M3/12 , F02M3/10 , F02M9/06 , F02M17/04 , F02M19/04
摘要： PROBLEM TO BE SOLVED: To properly adjust idle fuel flow in a carburetor without requiring high machining accuracy for a nozzle hole and the like, in the carburetor controlling fuel flow through the adjustment of the open area of the nozzle hole such that a metering needle operating in conjunction with a throttle valve is inserted into a pipe-shaped fuel nozzle whose nozzle hole is provided in a circumferential sidewall.
SOLUTION: A tapering throttle part 36, which is formed at the tip of the narrow shank 35 of the metering needle 32 inserted in a through hole 12 in a fuel nozzle 11 with the nozzle hole 14 provided in the circumferential wall, is inserted into a metering hole 22 at the tip of a fuel adjusting member 16 and the longitudinal position of the fuel adjusting member 16 is adjusted to vary the end open area of the metering hole 22 at an idle position whereby the idle fuel flow delivered from a constant fuel chamber 8 to an intake passage 2 is adjusted.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了适当地调节化油器中的空闲燃料流量而不需要喷嘴孔等的高加工精度，在化油器中，通过调节喷嘴孔的开口面积来控制燃料流，使得计量针与节流阀结合操作，插入管状燃料喷嘴，其喷嘴孔设置在圆周侧壁中。解决方案：锥形节流部36形成在计量针32的窄柄35的前端，插入燃料喷嘴11的通孔12中，其中设置在周壁上的喷嘴孔14，插入在燃料调节构件16的末端处的计量孔22中，并且调节燃料调节构件16的纵向位置以在空闲位置改变计量孔22的端部开口面积，由此从一个将恒定燃料室8调节到进气通道2。版权所有（C）2004，JPO

3. 发明专利

JP2004132215A Fuel adjusting device of carburetor 审中-公开
公开(公告)号：JP2004132215A
公开(公告)日：2004-04-30
申请号：JP2002295976
申请日：2002-10-09
申请人： Zama Japan Kk , ザマ・ジャパン株式会社
发明人： SAITO TAMOTSU , NONAKA TAKUMI
IPC分类号： F02M3/10 , F02M17/04 , F02M19/04
CPC分类号： F02M19/04 , F02M17/04
摘要： PROBLEM TO BE SOLVED: To perform appropriate adjusting with less revolution number of a regulating valve in an adjusting device for adjusting a fuel flow rate by inserting a needle-type valve element of the regulating valve into a throttle hole of a fuel passage. SOLUTION: A compensation passage 16 having a measuring jet 17 for supplying an engine minimum request flow rate is arranged to the valve element 13 of the manual regulating valve 12 inserted into the throttle hole 18 of a main fuel passage 7. The flow rate between a flow rate supplied from the compensation passage 16 at a gap between an outside peripheral surface 13a of the valve element 13 and an inlet edge 18a of the throttle hole 18 and an engine request maximum flow rate is adjusted. Accordingly, fuel adjustment is performed with the less revolution number of the regulating valve 12, and an accurate fine adjusting is realized with the less revolution number by reducing a cone angle of a circular cone part 13A for the fine adjusting. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2004278328A Diaphragm carburetor 审中-公开
公开(公告)号：JP2004278328A
公开(公告)日：2004-10-07
申请号：JP2003067671
申请日：2003-03-13
申请人： Zama Japan Kk , ザマ・ジャパン株式会社
发明人： SAITO TAMOTSU , NONAKA TAKUMI
IPC分类号： F02M17/04
摘要： PROBLEM TO BE SOLVED: To prevent breakage of a diaphragm for measurement of a diaphragm carburetor in which starting fuel is fed to an intake passage via a constant fuel chamber by displacing the diaphragm for measurement and forcibly opening a fuel inlet valve of the constant fuel chamber by an positive pressure portion of pulsation pressure occurring in a crank chamber of an engine.
SOLUTION: A diaphragm 15 for drive having hardness higher than that of a diaphragm 13 for measurement is mounted on the side of an atmospheric chamber 12. The positive pressure portion of pulsation pressure in a crank chamber 26 is led in a drive chamber 16 through a pulsation pressure passage 32 having a check valve 33 and a manual switching valve 34. By displacement of the diaphragm 15 for drive, the diaphragm 13 for measurement is pressed and displaced in a small displacement so as to forcibly open a fuel inlet valve.
COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2003020996A Carburetor 有权
标题翻译： CARBURETOR
公开(公告)号：JP2003020996A
公开(公告)日：2003-01-24
申请号：JP2001204313
申请日：2001-07-05
申请人： Zama Japan Kk , ザマ・ジャパン株式会社
发明人： NONAKA TAKUMI , ARAKI SATORU
IPC分类号： F02M1/10 , F02M19/00 , F02M19/04 , F02M19/08
摘要： PROBLEM TO BE SOLVED: To increase the output of a carburetor controlled by a measuring needle for interlocking the fuel flow from a single fuel system with a throttle valve, to miniaturize the carburetor, to facilitate the design and the manufacture and to improve the starting performance of the carburetor.
SOLUTION: The butterfly-shaped throttle valve 4 is attached to an inlet passage 2, and a fuel nozzle 10 of the single fuel system 9 is disposed on the downstream side of the throttle valve. The measuring needle 13 is held in a driven member 25 which reciprocates linearly in contact with the cam face 24 of a cam member 21 mounted on the throttle valve 4. the measuring needle 13 controls the fuel injection quantity of the fuel nozzle 10 according to the opening/closing motion of the throttle valve 4. The cam member 21 is pushed by a fast idle cam 31 to open the throttle valve 4, and the driven member 25 is pushed by a lift-up cam 32 to move the measuring needle 13, so that a high concentration air-fuel mixture is fed. The measuring needle 13 controls the fuel flow with an arbitrary stroke unrelated to the throttle valve 4 by the cam member 21 and the lift-up cam 32.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了增加由测量针控制的化油器的输出，用于将来自单个燃料系统的燃料流与节流阀联锁，以使化油器小型化，便于设计和制造以及提高启动性能的化油器。解决方案：蝶形节流阀4安装在入口通道2上，单燃料系统9的燃料喷嘴10设置在节流阀的下游侧。测量针13保持在从动构件25中，该从动构件25与安装在节气门4上的凸轮构件21的凸轮面24线性地往复运动。测量针13根据该测量针13控制燃料喷嘴10的燃料喷射量节气门4的打开/关闭运动。凸轮构件21被快速空转凸轮31推动以打开节气门4，并且从动构件25被提升凸轮32推动以移动测量针13，从而供给高浓度的空气 - 燃料混合物。测量针13通过凸轮构件21和升降凸轮32以与节气门4无关的任意行程来控制燃料流。

6. 发明专利

JP2005061289A Carburetor 审中-公开
标题翻译：化油器
公开(公告)号：JP2005061289A
公开(公告)日：2005-03-10
申请号：JP2003291158
申请日：2003-08-11
申请人： Zama Japan Kk , ザマ・ジャパン株式会社
发明人： NONAKA TAKUMI , TABATA KAZUNORI
IPC分类号： F02M19/06 , F02M17/04
CPC分类号： F02M17/04
摘要： PROBLEM TO BE SOLVED: To provide a carburetor whose low speed system is independent from a main system, wherein connection of fuel is smooth, dispersion in fuel flow rate is low, and high output is materialized.
SOLUTION: A flow rate control mechanism 21 is provided to a low speed system 12 independent from a main system 8. In the mechanism 21, a valve element 24 is linearly reciprocated with a cam 32 provided to a throttle valve shaft 6. The effective area of a low speed fuel passage 16 is increased to main fuel injection timing in accordance with increase in opening from an idle position of the throttle valve. After that, the area is decreased to be made zero at high output area. By so doing, the fuel flow rate in a high pressure area is stabilized and high output is materialized while the connection from low speed fuel to main fuel is made smooth.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供低速系统独立于主系统的化油器，其中燃料的连接是平滑的，燃料流量的分散低，并且实现高输出。解决方案：将流量控制机构21设置到独立于主系统8的低速系统12.在机构21中，阀元件24与设置在节流阀轴6上的凸轮32线性地往复运动。根据从节气门的空转位置开始的开度增加，低速燃料通道16的有效面积增加到主燃料喷射正时。之后，在高输出区域减小到零。通过这样做，高压区域的燃料流量稳定，高输出量实现，而从低速燃料到主燃料的连接变得平滑。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2003343358A Carburetor 审中-公开
标题翻译： CARBURETOR
公开(公告)号：JP2003343358A
公开(公告)日：2003-12-03
申请号：JP2002151879
申请日：2002-05-27
申请人： Zama Japan Kk , ザマ・ジャパン株式会社
发明人： NONAKA TAKUMI
IPC分类号： F02M17/04 , F02D31/00 , F02D35/00 , F02D41/12 , F02D41/16 , F02M7/00
CPC分类号： F02D41/16 , F02D31/007 , F02D35/0069 , F02D41/123
摘要： PROBLEM TO BE SOLVED: To reduce fuel consumption and stabilize engine operation regarding a carburetor of a single fuel system. SOLUTION: The carburetor is provided with an electric fuel supply means C which shuts off or feeds fuel to an intake passage 2 by opening or closing a selector valve 30 in such a way that a required desired engine speed is maintained with less fuel consumption in a specific opening range of a throttle valve 3, in addition to mechanically associating fuel flow with the amount of intake air by means of a metering needle 22 which operates in conjunction with the throttle valve 3. Shutting off the fuel when the engine speed rises over the desired engine speed and feeding the fuel when the engine speed drops is repeated to achieve stable operation with little change in engine speed. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了降低单燃料系统的化油器的燃料消耗和稳定发动机运行。解决方案：化油器设置有电燃料供应装置C，其通过打开或关闭选择阀30来关闭或将燃料供给到进气通道2，使得以较少的燃料维持所需的期望的发动机转速在节气门3的特定开度范围内的消耗，除了通过与节气门3结合操作的计量针22机械地将燃料流量与进气量相关联之外，当发动机转速当发动机转速下降时重复上升超过期望的发动机转速并且供给燃料，以实现稳定运转，发动机转速几乎没有变化。版权所有（C）2004，JPO

8. 发明专利

JP2013204552A Fuel adjusting method of hand-held engine working machine 有权
标题翻译：手持式发动机的燃油调节方法
公开(公告)号：JP2013204552A
公开(公告)日：2013-10-07
申请号：JP2012076440
申请日：2012-03-29
申请人： Iida Denki Kogyo Kk , 飯田電機工業株式会社 , Zama Japan Co Ltd , ザマ・ジャパン株式会社
发明人： YAMASHITA RYOHEI , YAMAZAKI AKIRA , WATANABE HIDEKI , SAITO TAMOTSU , NONAKA TAKUMI
IPC分类号： F02M7/20 , F02B63/02
CPC分类号： F02M17/00 , F02D41/0002 , F02D41/08 , F02D2041/001 , F02D2200/0406 , F02M3/062 , F02M71/00 , F02P5/1455
摘要： PROBLEM TO BE SOLVED: To obtain satisfactory and stable operation by dealing with even sudden load variable without time delay, by automatically adjusting an opening degree of a solenoid valve before performing actual work after engine start and by providing a proper air-fuel ratio.SOLUTION: After an engine 7 is started, when being within a fuel flow rate adjustment rotating speed range applying a fixed load in a work rotating speed range of the engine 7 where a throttle valve 4 is opened for a fixed opening degree, a detected rotating speed is fed back with respect to a target rotating speed, a fuel flow rate is adjusted by controlling an opening degree of a solenoid valve 3 of a vaporizer 1 to control the detected rotating speed, and the valve opening degree is determined to achieve the target rotating speed. By operating at the determined valve opening degree, a combustion state of a fuel in the engine 7 is brought into best state.
摘要翻译：要解决的问题：通过在发动机启动之前进行实际工作之前自动调节电磁阀的开度并提供适当的空燃比，通过处理即时突发负载变量而无需延迟即可获得令人满意的稳定运行。在发动机7启动后，当在以节流阀4打开固定开度的发动机7的作业转速范围内施加固定负荷的燃料流量调节转速范围内时，检测转速相对于目标转速反馈，通过控制蒸发器1的电磁阀3的开度来调节燃料流量，以控制检测到的转速，并且确定阀开度以实现目标旋转速度。通过在确定的阀开度下操作，将发动机7中的燃料的燃烧状态变为最佳状态。

9. 发明专利

JP2013151909A Speed reduction method for hand-carried engine-driven working machine 审中-公开
标题翻译：用于手动发动机驱动工作机的减速方法
公开(公告)号：JP2013151909A
公开(公告)日：2013-08-08
申请号：JP2012013306
申请日：2012-01-25
申请人： Iida Denki Kogyo Kk , 飯田電機工業株式会社 , Zama Japan Co Ltd , ザマ・ジャパン株式会社
发明人： YAMASHITA RYOHEI , YAMAZAKI AKIRA , SAITO TAMOTSU , WATANABE HIDEKI , NONAKA TAKUMI
IPC分类号： F02P5/15 , F02D41/12
CPC分类号： F02D3/04 , F02D31/003 , F02D41/12 , F02D2400/06 , F02P5/1504 , Y02T10/46
摘要： PROBLEM TO BE SOLVED: To achieve safe speed reduction of an engine by preventing occurrence of a lean come-down phenomenon in a state in which the engine operates in a practical rotation speed range.SOLUTION: An acceleration is calculated based on a change in a rotation speed. When the acceleration becomes smaller than a predetermined threshold, ignition timing is retarded by a desired amount based on a determination that an engine 1 is decelerated; furthermore, a fuel flow rate is increased; a decelerated state of the engine 1 is surely maintained; and occurrence of a lean come-down phenomenon midway through deceleration is prevented.
摘要翻译：要解决的问题：通过在发动机在实际转速范围内运行的状态下防止发生减速现象，实现发动机的安全减速。解决方案：基于a的变化来计算加速度旋转速度。当加速度小于预定阈值时，基于发动机1减速的判定，点火正时被延迟期望量; 此外，燃料流量增加; 可靠地维持发动机1的减速状态; 并且防止了通过减速中途出现精益倾倒现象。

10. 发明专利

JP2011169168A Fuel injection device 有权
标题翻译：燃油喷射装置
公开(公告)号：JP2011169168A
公开(公告)日：2011-09-01
申请号：JP2010031583
申请日：2010-02-16
申请人： Zama Japan Co Ltd , ザマ・ジャパン株式会社
发明人： NONAKA TAKUMI , WATANABE HIDEKI
IPC分类号： F02M37/20 , F02M37/00 , F02M37/12 , F02M37/16 , F02M59/44
CPC分类号： F02M37/0052 , F02M37/0023 , F02M55/02 , F02M55/04 , F02M57/02 , F02M57/026 , F02M59/14
摘要： PROBLEM TO BE SOLVED: To allow smooth discharge of a gas accumulated in a fuel injection device, in a fuel injection device for injecting/supplying fuel to an engine intake passage. SOLUTION: A fuel injection device 3A includes a fuel pump 31, a solenoid valve 32 for injecting pressurized fuel into the intake passage 10 of an engine 1, a high-pressure fuel passage 36 that extends from the fuel pump 31 to the solenoid valve 32 and has a medially positioned constant-pressure chamber 33A, and a fuel return passage 38 connected to a fuel return pipe 6, and extending from the constant-pressure chamber 33A and having a medially positioned priming pump 34A, wherein the constant-pressure chamber 33A is configured so that the top wall in the upper space thereof is disposed above the opening of the high-pressure fuel passage 36 extending to the solenoid valve 32, the fuel return passage 38 opens into the upper space at a position above the opening of the high-pressure fuel passage 36, and the gas accumulating in the constant-pressure chamber 33A is discharged from the upper space toward the fuel tank 2 via the fuel return passage 38. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了在燃料喷射装置中积聚的气体的平稳排放，在用于向发动机进气通道喷射/供给燃料的燃料喷射装置中。解决方案：燃料喷射装置3A包括燃料泵31，用于将加压燃料喷射到发动机1的进气通道10中的电磁阀32，从燃料泵31延伸到高压燃料通道36的高压燃料通道36 电磁阀32并具有中间定位的恒压室33A和连接到燃料返回管6的燃料返回通道38，并且从恒压室33A延伸并具有中间定位的启动泵34A，压力室33A被构造成使得其上部空间中的顶壁设置在延伸到电磁阀32的高压燃料通道36的开口上方，燃料返回通道38在上方的空间上方开口打开高压燃料通道36，积存在恒压室33A中的气体经由燃料返回通道38从上部空间朝向燃料箱2排出。（C）2011，JPO＆INPIT

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