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1. 发明专利

JP2003227414A FUEL ADJUSTING DEVICE FOR CARBURETOR 审中-公开
公开(公告)号：JP2003227414A
公开(公告)日：2003-08-15
申请号：JP2002028947
申请日：2002-02-06
申请人： ZAMA JAPAN CO LTD
发明人： NONAKA TAKUMI , KOIZUMI KIMIO
IPC分类号： F02M3/10 , F02M9/08 , F02M9/12 , F02M17/04 , F02M19/03
摘要： PROBLEM TO BE SOLVED: To simply carry out a complete correction of air/fuel ratio against an outstanding variation of an engine performance even in a small sized carburetor for a general purpose engine. SOLUTION: A constant bleed air passage 22 having a fixed jet 23 and a variable bleed air passage 24 having a closing valve 25 comprising a manual needle valve with screw and a fixed jet 26 are connected to a fuel route 15 for feeding a fuel in a constant fuel chamber 14 to an intake passage 2. An air-fuel mixture can be adjusted to the mixture of a predetermined air/fuel ratio over a wide correction width by restricting a high concentration side/a diluted side of the air/fuel ratio of the mixture by two fixed jets 23, 26 and adjusting a flow rate of the bleed air to a non-stage by the closing valve 25. COPYRIGHT: (C)2003,JPO

2. 发明专利

JPH09324702A IDLE OPENING REGULATOR OF SLIDING VALVE TYPE CARBURETOR 失效
公开(公告)号：JPH09324702A
公开(公告)日：1997-12-16
申请号：JP6721196
申请日：1996-02-28
申请人： ZAMA JAPAN CO LTD
发明人： KOIZUMI KIMIO
IPC分类号： F02M3/08 , F02M9/06
摘要： PROBLEM TO BE SOLVED: To reduce a wear in the initial use so as to aim at reduction of labor for readjustment by forming the tip end part of an adjusting screw in a semi- spherical shape and forming the slant upper surface of a groove in a circular bend equal to or slightly larger radius than that of the tip end part. SOLUTION: An adjusting screw 16 is screw-mounted sideways from the outside on the upper part of a carburetor main body and a tip end part 17 projecting in its suction passage is formed in a semi-spherical shape and so arranged as to fit in a groove 14 to touch a slant upper surface 15. By turning this adjusting screw 16 for making the tip end part 17 to advance/retreat, so as to change its contact position to the slant upper surface 15 so that the most descent position of a sliding valve 5, namely, an idle position may be adjusted. Since the tip end part 17 and the slant upper surface 15 are formed in mutually resemble curved surface shapes, a very slight wear may cause a surface contact state with a large contact surface. In addition, even throughout he adjusting screw 16 and the groove 14 are not positioned on the same central lines, a stop takes place at the idle position correctly. Thereby, a wear in the initial use is reduced so as to aim at reduction of labor for readjustment.

3. 发明专利

JP2005155525A Carburetor with manual choke mechanism 审中-公开
标题翻译：具有手动选择机构的CARBURETOR
公开(公告)号：JP2005155525A
公开(公告)日：2005-06-16
申请号：JP2003397006
申请日：2003-11-27
申请人： Zama Japan Co Ltd , ザマ・ジャパン株式会社
发明人： KOIZUMI KIMIO
IPC分类号： F02M1/02 , F02D9/10 , F02M3/09 , F02M3/12 , F02M7/12
CPC分类号： F02M3/09 , F02D9/1065 , F02M3/12
摘要： PROBLEM TO BE SOLVED: To provide a carburetor with a manual choke mechanism capable of obtaining excellent start and stable drive successive thereto by fixing a choke valve at a predetermined position even when a hand is off in the manual operation.
SOLUTION: The fixing force and the valve-opening force are applied to a choke valve stem 6. A pin 10 of a lever 9 of a choke valve presses an arm piece 14 of a throttle valve lever 13 to slightly open the throttle valve 7 when the choke valve 5 is fully opened. When engine complete explosion is performed in this state, the choke valve 5 is half-opened, and the throttle valve 7 is returned to the idling position by a valve-closing spring 17. When the throttle valve 7 is opened, a cam 15 of the throttle valve lever 13 presses the pin 10 to open the choke valve 5. The valve-opening force exceeds the fixing force when the valve is almost fully opened, and the choke valve 5 is fully opened. The pin 10 is separated from the cam 15, and the throttle valve 7 is opened/closed without interference with the choke valve 5. The choke valve 5 is fixed even when a hand is off by the fixing force exceeding the valve-opening force from the fully-closed condition to the almost fully-opened condition.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供具有手动扼流器机构的化油器，即使手动操作中的手关闭，也可以通过将阻塞阀固定在预定位置来获得良好的启动和稳定的驱动。解决方案：固定力和开阀力被施加到阻风阀杆6.阻气门的杆9的销10压紧节气门杆13的臂件14以略微打开节气门当止回阀5完全打开时，阀7。当在该状态下进行发动机完全爆炸时，阻塞阀5半开，节气门7通过关闭弹簧17返回到怠速位置。当节流阀7打开时，凸轮15为节流阀杆13按压销10以打开阻风阀5.当阀几乎完全打开时，阀开启力超过固定力，并且阻塞阀5完全打开。销10与凸轮15分离，并且节流阀7被打开/关闭而不与阻塞阀5干涉。即使当手由于超过阀开启力的固定力而被关闭时，阻塞阀5也被固定完全关闭状态到几乎完全打开的状态。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2000265906A ACCELERATION DEVICE FOR EVAPORATOR 失效
公开(公告)号：JP2000265906A
公开(公告)日：2000-09-26
申请号：JP7498199
申请日：1999-03-19
申请人： ZAMA JAPAN CO LTD
发明人： YANAKA NOBORU , KOIZUMI KIMIO
IPC分类号： F02M17/04 , F02M7/08
摘要： PROBLEM TO BE SOLVED: To obtain an acceleration device having an acceleration pump, which is simple in structure, excellent in liquid tightness, has freedom in arrangement space, stability in operation. SOLUTION: An acceleration pump 21 is a negative diaphragm type which does not depend upon a mechanical driving force transmitting mechanism. A pulsative motion absorbing means 35 is arranged, which has a diaphragm 36 freely displaced according to pulsative motion of engine intake negative pressure introduced into a negative pressure chamber 24. It is thus possible to prevent accelerating fuel from being discharged due to operation of a pump diaphragm caused by pressure pulsative motion during idling time.

5. 发明专利

JP2006348849A DIAPHRAGM CARBURETOR 审中-公开
公开(公告)号：JP2006348849A
公开(公告)日：2006-12-28
申请号：JP2005176183
申请日：2005-06-16
申请人： ZAMA JAPAN CO LTD
发明人： ARAKI SATORU , KOIZUMI KIMIO
IPC分类号： F02M5/02 , F02M17/04 , F02M19/04
摘要： PROBLEM TO BE SOLVED: To provide a diaphragm carburetor for actualizing proper operation by correcting a change of an air-fuel ratio with the attitude of the carburetor. SOLUTION: The diaphragm carburetor comprises a diaphragm 5 provided in a diaphragm chamber 4 of a carburetor body 1 for partitioning it into an atmosphere chamber 4a and a fuel chamber 4b, and an adjusting mechanism 14 provided on a metering lever 10a and having a weight 17 for correcting a change of the diaphragm 5 due to the attitude of the carburetor about the opening/closing amount of an inlet needle 6a mounted at the other end of the metering lever 10a which has one end abutting on the diaphragm 5 for rocking around a pin shaft 12 supported on the carburetor body 1. COPYRIGHT: (C)2007,JPO&INPIT

6. 发明专利

JP2001295651A STRATIFIED SCAVENGING TWO-CYCLE ENGINE 失效
公开(公告)号：JP2001295651A
公开(公告)日：2001-10-26
申请号：JP2000111604
申请日：2000-04-13
申请人： ZAMA JAPAN CO LTD
发明人： KOIZUMI KIMIO
IPC分类号： F02M9/12 , F02B25/20 , F02B25/22 , F02B29/06 , F02B75/02 , F02D9/02 , F02D9/16 , F02M13/04
摘要： PROBLEM TO BE SOLVED: To provide a stratified scavenging two-cycle engine, capable of maintaining the flow rate ratio of a mixture to a scavenging air generally at a constant, satisfactorily performing cold start and accelerated operation, and capable of being installed in a small area. SOLUTION: An overall height is reduced by moving to each other a mixture path 6 and an air path 9 connected to an engine 1 in lateral direction, and a throttle valve 21 and an air valve 25 are interlocked with each other, by engaging gears 41 and 43 with each other in lateral direction. The gears 41 and 43 which will not engage with each other, until the throttle valve 21 is opened from an idle position to a small opening position to prevent air from increasing, while the mixture is increased so as to improve a cold start and an accelerated operation. When the opening of the throttle valve 21 is increased, the gears 41 and 43 are engaged with each other to open the air valve 25, in order to keep the flow rate ratio of the mixture to the air at nearly a constant level.

7. 发明专利

JPH1182174A ROTARY THROTTLE VALVE TYPE CARBURETOR 失效
公开(公告)号：JPH1182174A
公开(公告)日：1999-03-26
申请号：JP25755397
申请日：1997-09-05
申请人： ZAMA JAPAN CO LTD
发明人： ARAKI SATORU , KOIZUMI KIMIO
IPC分类号： F02M9/08 , F02M7/08
摘要： PROBLEM TO BE SOLVED: To obtain excellent operability with hardly any restrictions on installation. SOLUTION: A manual starting pump 35 for introducing start-up fuel into a constant fuel chamber 22, and a manual fuel regulating needle valve 28 for regulating fuel fed from the constant fuel chamber 22 to a fuel nozzle 12 are arranged side by side at one side face part of a carburetor body 1 and manually operated from one direction while lowering the whole height of a carburetor.

8. 发明专利

JPH10110652A STARTING FUEL SUPPLY DEVICE FOR FILM TYPE EVAPORATOR 失效
公开(公告)号：JPH10110652A
公开(公告)日：1998-04-28
申请号：JP28170296
申请日：1996-10-03
申请人： ZAMA JAPAN CO LTD
发明人： KOIZUMI KIMIO
IPC分类号： F02M1/16 , F02M1/06 , F02M3/09 , F02M17/04 , F02M37/16
摘要： PROBLEM TO BE SOLVED: To surely and easily perform low temperature starting of an engine with a small number of crankings by enbling properly supplying of starting fuel for a general engine without skill. SOLUTION: An upstream side and a downstream side of a throttle valve on an intake passage is connected to each other through a bypass 31, while a constant fuel chamber 12 is connected with the bypass 31 by means of an increasing fuel passage 32 provided with a check valve 33. The bypass 31 and the increasing fuel passage 32 are opened and closed substantially at the same time by means of a manually operated valve 40. A required amount of starting fuel is supplied to an engine for a short time through the increasing fuel passage 32 to start the engine with a small number of crankings. Idling malfunction and discharge operation of inflow air are eliminated by preventing inflow of air into the constant fuel chamber 12 through the check valve 33. Starting operation can be done at random for unnecessitating skill of an operator.

9. 发明专利

JP2008163754A Rotor internal configuration of 2-bore rotary carburetor for stratified-scavenging engine 有权
标题翻译：用于分离式扫气发动机的2缸旋转式碳酸氢机的转子内部配置
公开(公告)号：JP2008163754A
公开(公告)日：2008-07-17
申请号：JP2006350760
申请日：2006-12-27
申请人： Zama Japan Co Ltd , ザマ・ジャパン株式会社
发明人： KOIZUMI KIMIO
IPC分类号： F02M19/00 , F02M9/08 , F02M17/04
CPC分类号： F02M9/08 , F02B25/20 , F02M13/04 , F02M17/04 , Y10S261/01
摘要： PROBLEM TO BE SOLVED: To provide a rotor internal configuration of a 2-bore rotary carburetor for a stratified-scavenging engine stabilizing the engine of a power saw, a lawnmower or the like in idling and all position changing.
SOLUTION: A fuel supply side bore 8 of a carburetor rotor valve 6 is formed with groove pockets 10 communicating with the fuel supply side bore 8 respectively in opening edges of an upstream end and a downstream end on a side of accelerating rotation direction of the rotor valve 6. The groove pocket 10 is in a shape of gradually turning upward to the side of accelerating rotation direction along a peripheral surface of the rotor valve 6 and decreasing in cross sectional area. The construction is therefore such that in horizontal rotation of the rotor valve 6, the groove pockets 10 first lap over a mix passage, the fuel supply side bore 8 and the mix passage are brought into communication and the fuel supply side bore 8 is opened before an air supply side bore 7.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于分级扫气发动机的2孔旋转式化油器的转子内部结构，其使怠速和全部位置变化中的动力锯，割草机等的发动机稳定。解决方案：化油器转子阀6的燃料供给侧孔8形成有分别在加速旋转方向一侧的上游端和下游端的开口边缘与燃料供给侧孔8连通的槽口10 槽槽10的形状沿着转子阀6的周面向加速旋转方向的上方逐渐向上方转动，截面积减小。因此，该结构使得在转子阀6的水平旋转中，凹槽10首先在混合通道上搭接，燃料供给侧孔8和混合通道连通，并且燃料供给侧孔8在空气供应侧孔7.版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2001342837A STRATIFIED SCAVENGING TWO-CYCLE ENGINE 失效
公开(公告)号：JP2001342837A
公开(公告)日：2001-12-14
申请号：JP2000167080
申请日：2000-06-05
申请人： ZAMA JAPAN CO LTD
发明人： KOIZUMI KIMIO , ARAKI SATORU
IPC分类号： F02B33/04 , F02B25/16 , F02B25/20 , F02B25/22 , F02B33/44 , F02B75/02 , F02D9/02 , F02D9/14 , F02M9/06 , F02M9/08 , F02M11/08
摘要： PROBLEM TO BE SOLVED: To correspond to a case that a set space is extremely restricted by miniaturizing a flow controlling means comprising a throttle valve for output control and an air valve for controlling scavenging air flow and shortening a mixture passage and an air passage. SOLUTION: The throttle valve 22 of the mixture passage 6 connected to a crank chamber 3 and the air valve 25 of the air passage 9 connected to a scavenging passage 8 are integrally formed by engaging one cylindrical valve element 27 having a throttle through hole 23 and an air through hole 26 with one body 28. The mixture passage 6 is straight in the body 28, the air passage 9 is directed obliquely upward on the downstream side of the valve element 27, and the upstream sides of the valve element 27 of the passages 6 and 9 are formed with one common inlet passage 30.

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