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1. 发明专利

JP2009167895A Carburetor for stratified scavenging 审中-公开
标题翻译：用于分层扫描的CARBURETOR
公开(公告)号：JP2009167895A
公开(公告)日：2009-07-30
申请号：JP2008006387
申请日：2008-01-16
申请人： Kioritz Corp , Walbro Japan Inc , 日本ウォルブロー株式会社 , 株式会社共立
发明人： TAKAHASHI TOSHIMASA , AIHARA TAMIO , MICHIYAMA SACHIAKI , MIYAKI HIROYUKI , KAWAMURA KUNIMUNE
IPC分类号： F02M17/34 , F02B25/22 , F02M17/40
CPC分类号： Y02T10/146
摘要： PROBLEM TO BE SOLVED: To secure, by a simple structure, air tightness with a piping member fitted to a tubular shaped cylindrical part for piping connection provided on a body for a scavenging valve in a carburetor for stratified scavenging.
SOLUTION: A circumferential groove 13 is formed over the all circumference of a tubular extension 8a of the body 8 for the scavenging valve, a side wall surface 13b on its one side is formed in a slant face and a rubber boot 9 fitted to the tubular extension is installed with an inward ridge 9a of the rubber boot merged in the circumferential groove. The circumferential ridge of the elastic piping member is received in the circumferential groove formed in the outer peripheral surface of the tubular extension to form a labyrinth seal structure with respect to an air flow of air leakage. Furthermore, the circumferential ridge is pressed in the circumferential groove by fastening a fastener member, for instance a band, and as the circumferential groove is formed to be narrow toward a groove bottom, the circumferential ridge is resiliently deformable while being pressed in, so that a close contact force between the circumferential groove and the circumferential ridge in increased and the air tightness can be further enhanced.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过简单的结构，通过安装在用于分层清扫的化油器中用于清扫阀的主体上的用于管道连接的管状圆柱形部件的配管构件来确保气密性。解决方案：周向槽13形成在用于扫气阀的主体8的管状延伸部8a的全周上，其一侧的侧壁表面13b形成在倾斜面中，并且安装有橡胶靴9 在管状延伸部上安装有橡胶套的向内的隆起部9a，其合并在周向槽中。弹性管道构件的周向脊被容纳在形成于管状延伸部的外周面的周向槽内，相对于空气的泄漏气流形成迷宫式密封结构。此外，通过紧固紧固件（例如带）将周向脊压在周向槽中，并且当周向槽形成为朝向凹槽底部窄时，周向脊在被压入时可弹性变形，使得可以进一步提高周向槽和周向脊之间的紧密接触力并且气密性。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2009103056A Stratified scavenging carburetor 审中-公开
标题翻译：分层锯切机
公开(公告)号：JP2009103056A
公开(公告)日：2009-05-14
申请号：JP2007275533
申请日：2007-10-23
申请人： Walbro Japan Inc , 日本ウォルブロー株式会社
发明人： TAKAHASHI TOSHIMASA , AIHARA TAMIO
IPC分类号： F02M19/00 , F02B25/20 , F02B25/22 , F02D9/02
CPC分类号： Y02T10/146
摘要： PROBLEM TO BE SOLVED: To solve a problem of difficulty of adjusting scavenging air volume in idling in response to variations in an engine and a carburetor, in a stratified scavenging two-cycle engine.
SOLUTION: A bypass passage bypassing an air control operating valve 10 is formed by bypass holes 15a, 15b and communicating holes 17a, 17b, and an adjusting screw 16 adjusting air volume passing through the bypass passage is provided in the communicating holes. Thereby, it is possible to adjust bypass air volume optionally in response to the concentration of an air-fuel ratio in idling and the concentration of the air-fuel ratio in acceleration from idling. Thus, it is possible to rationalize the concentration of the air-fuel ratio in idling and to achieve sufficient acceleration performance from an idling state, in response to the variations or the like in the engine and carburetor.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了解决在分层清扫双循环发动机中响应于发动机和化油器的变化而调节怠速中的排气量的难度的问题。解决方案：旁通空气控制操作阀10的旁路通道由旁通孔15a，15b和连通孔17a，17b形成，调节螺钉16设置在连通孔中，调节螺纹16调节通过旁通通道的空气体积。因此，可以根据空转空燃比的浓度和空转加速度中的空燃比浓度来任意地调节旁通风量。因此，可以根据发动机和化油器的变化等，使怠速中的空燃比的浓度合理化，并且能够从空转状态获得足够的加速性能。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2009174323A Sliding throttle valve type carburetor 审中-公开
标题翻译：滑阀节流阀类型
公开(公告)号：JP2009174323A
公开(公告)日：2009-08-06
申请号：JP2008010632
申请日：2008-01-21
申请人： Walbro Japan Inc , 日本ウォルブロー株式会社
发明人： TAKAHASHI TOSHIMASA , AIHARA TAMIO , TAKANO ATSUSHI , SUZUKI HIROMICHI , SAKAGUCHI TAKESHI
IPC分类号： F02M9/06 , F02M19/06 , F02M19/10
CPC分类号： F02M9/02 , F02M9/04 , Y10S261/12 , Y10S261/38 , Y10S261/56
摘要： PROBLEM TO BE SOLVED: To suppress deterioration of fuel economy or exhaust performance in the long-term use of a sliding throttle valve type carburetor.
SOLUTION: The amount of fuel injection is adjusted by disposing a small venturi 4b in a suction passage 2, disposing a valve body 3 having a flat plate part 3a for opening and closing an opening thereof, disposing a tubular body 18 communicated with a main injection hole 17 in a fuel storing chamber 11a, inserting a needle-shaped member 16 into the tubular body, and displacing the needle-shaped member 16 by the rotation of a valve opening/closing input shaft 6 for opening and closing the valve body by external manipulation. In a narrow open valve state close to an idle state, a strong negative pressure can be generated against a fuel injection nozzle by opening only the small venturi, thereby improving fuel atomization performance in the narrow open valve state. Additionally, since a wall-shaped part of the valve body is slidingly contacted with the opening of the small venturi, there is no part allowing changes in gap during the valve opening/closing. Therefore, the part having a risk of abrasion due to engine vibrations or the like can be eliminated, and the initial performance on fuel economy, exhaust characteristics, or the like can be maintained over the long term.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了抑制长期使用滑动节气门式化油器的燃油经济性或排气性能的劣化。解决方案：通过在抽吸通道2中设置小文丘里4b来调节燃料喷射量，设置具有用于打开和关闭其开口的平板部分3a的阀体3，设置与在燃料存储室11a中的主注入孔17，将针状构件16插入管状体中，并且通过用于打开和关闭阀的阀打开/关闭输入轴6的旋转来移位针状构件16 身体通过外部操纵。在接近怠速状态的狭窄的打开阀状态下，通过仅打开小文丘里管可以对燃料喷射喷嘴产生强的负压，从而提高窄开启阀状态下的燃料雾化性能。此外，由于阀体的壁形部分与小文丘里管的开口滑动接触，因此在阀打开/关闭期间不存在允许间隙变化的部分。因此，可以消除由于发动机振动等引起的磨损风险的部件，并且能够长期保持燃料经济性，排气特性等的初始性能。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2009185695A Layered scavenging carburetor 审中-公开
标题翻译：分层加工机
公开(公告)号：JP2009185695A
公开(公告)日：2009-08-20
申请号：JP2008026567
申请日：2008-02-06
申请人： Walbro Japan Inc , 日本ウォルブロー株式会社
发明人： AIHARA TAMIO , MICHIYAMA SACHIAKI
IPC分类号： F02M9/12 , F02B25/22 , F02M19/00
CPC分类号： F02M9/12 , F02M23/03 , Y02T10/146 , Y10T137/87161
摘要： PROBLEM TO BE SOLVED: To further improve acceleration properties and scavenging properties of a layered scavenging carburetor. SOLUTION: A scavenging air valve 7 comprising a rotary valve operated to open as one unit with a throttle valve 5 is provided. A triangular through-hole 7d is provided on a valve element 7b of the scavenging air valve 7 and is opened to an air passage 1b from an apex of the triangle at the start of valve opening. Since air for scavenging flows from the start of valve opening, air for scavenging can be prevented from suddenly increasing during valve opening from a full close state to a full open state. Consequently, intermittent problems in air supply characteristics do not occur, specifications of the carburetor can be easily set, and both of the scavenging properties and the acceleration properties can be compatibly materialized. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：进一步提高层状扫气化油器的加速性能和清除性能。解决方案：提供一种清扫空气阀7，其包括用节流阀5作为一个单元打开的旋转阀。三角形通孔7d设置在扫气空气阀7的阀元件7b上，并且在阀开启时从三角形的顶点向空气通道1b开口。由于从开阀开始流动的空气从阀门从完全关闭状态开始到全开状态，可以防止用于清扫的空气突然增加。因此，不会发生空气供给特性的间歇性问题，能够容易地设定化油器的规格，能兼容地实现清扫性和加速性。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2008069767A Carburetor for stratified scavenging 审中-公开
标题翻译：用于分层扫描的CARBURETOR
公开(公告)号：JP2008069767A
公开(公告)日：2008-03-27
申请号：JP2007116978
申请日：2007-04-26
申请人： Mitsubishi Heavy Ind Ltd , Walbro Japan Inc , 三菱重工業株式会社 , 日本ウォルブロー株式会社
发明人： AIHARA TAMIO , OTSUKI BUNICHI , UENOYAMA KAZUYUKI
IPC分类号： F02B25/20 , F02B25/22 , F02M19/00
CPC分类号： F02M19/00 , F02M9/08 , Y10S261/01 , Y10T137/87153
摘要： PROBLEM TO BE SOLVED: To improve acceleration by preventing the air-fuel mixture in a combustion chamber from being leaned when a throttle valve is suddenly opened. SOLUTION: An air valve 5 for scavenging is formed in a rotary valve having a cylindrical valve element 5a crossing an air passage 1b formed in the body 3 of a carburetor. A partition plate 16 extending in the through direction of an air through-hole 5b formed in the valve element and cross-sectionally dividing the through-hole into two parts is installed in the air through-hole. When the length of the partition plate is equal to that in the penetrating direction of the through-hole, a throttle valve is cut out by the partition plate until it is generally half-opened, and the air valve is closed. Since the air valve for scavenging is opened near the full opening of the throttle valve for air-fuel mixture, the air-fuel mixture is kept in a dense state until the air valve for scavenging is opened. Consequently, the acceleration of an engine is improved, and the opening of the valve can be adjusted by the opening width of the air passage relative to the valve element (length of the valve element in the rotating direction). COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过防止燃油室中的空气燃料混合物在节气门突然打开时倾斜来提高加速度。解决方案：用于清扫的空气阀5形成在具有与形成在化油器主体3中的空气通道1b交叉的圆柱形阀元件5a的旋转阀中。在空气通孔中安装有隔壁板16，其沿形成在阀芯上的空气通孔5b的贯通方向延伸并将通孔横截面分成两部分。当分隔板的长度与通孔的穿透方向相同时，节流阀被分隔板切断，直到其大致半开，并且空气阀关闭。由于用于清扫的空气阀在用于空气 - 燃料混合物的节流阀的全开口附近打开，所以空气 - 燃料混合物保持在致密状态，直到用于清除的空气阀打开。因此，提高了发动机的加速度，并且可以通过空气通道相对于阀元件的开口宽度（阀元件在旋转方向上的长度）来调节阀的打开。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2006077706A Starting device for carburetor 审中-公开
标题翻译：启动设备制造商
公开(公告)号：JP2006077706A
公开(公告)日：2006-03-23
申请号：JP2004263732
申请日：2004-09-10
申请人： Walbro Japan Inc , 株式会社日本ウォルブロー
发明人： AIHARA TAMIO , TEZUKA KEITA , ENDO MASATOSHI
IPC分类号： F02M1/02 , F02D9/02
摘要： PROBLEM TO BE SOLVED: To easily realize a structure capable of securely setting a choke valve in a full closing state at low-temperature start.
SOLUTION: A choke lever 5 is fixed to a valve shaft 3a of the chock valve 3, and a first idle lever 6 is rotatably provided. A throttle lever 7 is fixed to a valve shaft 4a of a throttle valve 4. First and second cam faces 11a, 11c are provided in the first idle lever 6, and an engagement piece 7a as a cam sliding part is provided in the throttle lever 7. At the time of first idle operation, the throttle valve 4 is opened by the first cam face 11a. On the second cam face 11c, the throttle lever 7 is rotated in the closing side of the throttle valve 4, and a cam driven part of the throttle lever 7 abuts on the second cam face 11c with the choke valve 3 in the full closing state. The abutting position of the cam face to the cam driven part becomes stepless, and even if the abutting position is deviated, the full closing state of the choke valve 3 is not changed. As a result, the closing state of the choke valve 3 at the time of first idle operation is secured by the simple structure, and the structure of a carburetor can be realized at low cost.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了容易地实现能够在低温启动时将闭塞阀稳定地设定在完全关闭状态的结构。解决方案：阻风门杆5固定在节流阀3的阀轴3a上，第一怠速杆6可旋转地设置。节流杆7固定在节流阀4的阀轴4a上。第一和第二凸轮面11a，11c设置在第一怠速杆6中，并且作为凸轮滑动部的接合件7a设置在节流杆在第一怠速运转时，节流阀4被第一凸轮面11a打开。在第二凸轮面11c上，节气门杆7在节气门4的关闭侧旋转，节气门杆7的凸轮驱动部分与阻气门3处于完全关闭状态的第二凸轮面11c相接触。凸轮面与凸轮驱动部的抵接位置无级化，即使抵接位置偏离，阻塞阀3的全闭合状态也不变化。结果，通过简单的结构确保了第一怠速运转时的节流阀3的关闭状态，能够以低成本实现化油器的结构。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2002155805A TWO-STROKE STRATIFIED SCAVENGING INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2002155805A
公开(公告)日：2002-05-31
申请号：JP2000349906
申请日：2000-11-16
申请人： WALBRO JAPAN INC
发明人： AIHARA TAMIO
IPC分类号： F02M9/08 , F02B17/00 , F02M9/12 , F02M11/10
摘要： PROBLEM TO BE SOLVED: To provide a carburetor for a two-stroke stratified scavenging internal combustion engine that improves the accelerating characteristic of the engine without degrading an exhaust gas component. SOLUTION: An air throttle valve 2 and a mixture throttle valve 5 integrated together and provided with restrictions 2a and 5a are fitted in respective cylindrical valve chests 16 and 18 perpendicular to a scavenging air passage 31 and a mixture passage 41 through a carburetor body 15. A through hole 3 interconnects the restriction 2a of the scavenging air throttle valve 2 and the restriction 5a of the mixture throttle valve 5a, and a passage hole 32 interconnects the outlet of the restriction 2a of the scavenging air throttle valve 2 and the outlet of the scavenging air passage 31.

8. 发明专利

JP2002039016A ROTARY THROTTLE VALVE TYPE CARBURETTOR 失效
公开(公告)号：JP2002039016A
公开(公告)日：2002-02-06
申请号：JP2000222218
申请日：2000-07-24
申请人： WALBRO JAPAN INC
发明人： TERAKADO HITOSHI , OTSUKI BUNICHI , AIHARA TAMIO
IPC分类号： F02M9/08 , F02M7/08 , F02M9/12
摘要： PROBLEM TO BE SOLVED: To make fuel smoothly flow from a constant pressure chamber to a fuel supply pipe even when an engine is running by continuous accelerating and decelerating operations. SOLUTION: A throttle valve 25 having a throttle hole 26 is rotateably and elevateably inserted into a valve chamber 24 arranged so as to be perpendicular to an intake passage 28 of a carburetor body 21. A needle 2 supported by the throttle valve 25 is inserted into a fuel supply pipe 3 projecting from a constant pressure fuel chamber 43 located at a bottom portion of the carburetor body 21 toward the throttle hole 26. An intake air volume of the intake passage 28 is adjusted by turning the throttle valve 25. Fuel quantity from the fuel supply pipe 3 is adjusted by vertically moving the throttle valve 25. An accelerating pump 31 is structured by inserting a plunger 32 into a cylinder 29 arranged perpendicular to the valve chamber 24 of the carburetor body 21. The plunger 32 engages with a cam groove 61 on an external peripheral surface of the throttle valve 25 by a spring. A fuel inlet and outlet fuel inlet and outlet port of the cylinder 29 is communicated with a passage connecting the constant pressure fuel chamber 43 to a fuel injecting hole 3a at a downstream position from a check valve 4 and at an upstream position from a fuel jet 37.

9. 发明专利

JP2002155808A CARBURETOR FOR TWO-STROKE STRATIFIED SCAVENGING INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2002155808A
公开(公告)日：2002-05-31
申请号：JP2000349905
申请日：2000-11-16
申请人： WALBRO JAPAN INC
发明人： AIHARA TAMIO
IPC分类号： F02M19/00 , F02M11/10
摘要： PROBLEM TO BE SOLVED: To provide a carburetor for a two-stroke stratified scavenging internal combustion engine that improves the accelerating characteristic of an engine without degrading an exhaust gas component. SOLUTION: An end flange 3 of a carburetor body 2 has a right-left pair of through holes 4, in which bolts are inserted to connect it to an intake port of an engine. The carburetor body has a scavenging air passage 9 and a mixture passage 10 passing in the respective upper and lower portions. The mixture passage is connected to an intake port of a crankcase of the engine via a check valve, and the air passage is connected to the midstream of a scavenging passage connecting the crankcase of the engine and a scavenging port in the bottom of a combustion chamber openable near the bottom dead center of a piston. The scavenging air passage and the mixture passage are provided with respective throttle valves. A groove passage 12 connecting the scavenging air passage and the mixture passage is formed in an outlet-side sidewall surface of the carburetor body.

10. 发明专利

JP2005320866A Change and supply device for different liquefied gas fuels 审中-公开
标题翻译：不同液化气燃料的更换和供应装置
公开(公告)号：JP2005320866A
公开(公告)日：2005-11-17
申请号：JP2004137279
申请日：2004-05-06
申请人： Walbro Japan Inc , 株式会社日本ウォルブロー
发明人： AIHARA TAMIO , FUJISAWA KAZUTO , OTSUKI BUNICHI
IPC分类号： F02M21/06 , F02D19/06 , F02M21/02
CPC分类号： Y02T10/32 , Y02T10/36
摘要： PROBLEM TO BE SOLVED: To allow use of different liquefied gas fuels with a compact construction. SOLUTION: Fuel pressure of a primary fuel chamber 20 in a primary regulator 16 of a fuel supply device 2 is generated by a diaphragm 19 and a compression coil spring 21 and a load direction end of the compression coil spring opposite from the diaphragm is contacted with a cam body 33. The cam body is provided with a cam surface 33a and a contact position of the compression coil spring is changed between an outer peripheral surface and the cam surface through rotation of the cam body to vary a deflection amount of the compression coil spring. Fuels of different heat values can be used in different ways in an internal combustion engine or the like provided with the single regulator by turning the cam body to change the fuel pressure of the primary regulator. This allows use of the different liquefied gas fuels with the compact construction. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：允许使用具有紧凑结构的不同液化气燃料。解决方案：燃料供给装置2的主调节器16中的一次燃料室20的燃料压力由隔膜19和压缩螺旋弹簧21以及与隔膜相反的压缩螺旋弹簧的负载方向端产生与凸轮体33接触。凸轮体设置有凸轮面33a，并且压缩螺旋弹簧的接触位置通过凸轮体的旋转而在外周面与凸轮面之间变化，压缩螺旋弹簧。可以通过转动凸轮体来改变主调节器的燃料压力，在设置有单个调节器的内燃机等中以不同的方式使用不同热值的燃料。这允许使用具有紧凑结构的不同液化气燃料。版权所有（C）2006，JPO＆NCIPI

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