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1. 发明专利

JPS5455240A CARBURETOR 失效
公开(公告)号：JPS5455240A
公开(公告)日：1979-05-02
申请号：JP12146177
申请日：1977-10-12
申请人： HITACHI LTD
发明人： KONUKI KEIICHI , MAMA SHIGEYUKI
IPC分类号： F02M7/00 , F02M7/24
摘要： PURPOSE:To independently control a negative pressure generated at a large venturi part by arranging an adjusting screw which controls the sectional area of a negative- pressure passage at a position where the intake flow path of the large venturi part is not disturbed. CONSTITUTION:A means to vary the sectional area of a negative-pressure passage 9 which is opened at a large venturi part 6 formed on the wall surface of an intake path is arranged. Said means consists of a tapped hole which communicates to the negative-pressure passage 9 formed on the shoulder surface on the upstream side of the large venturi part 6 and an adjusting screw 13, and the adjusting screw 13 is adjusted to feed a negative pressure suitable for a negative-pressure utilizing device 15 connected to the negative-pressure passage 9. The constitution described above allows the negative pressure generated at the large venturi part to be controlled, independently of the characteristics of a carburetor and allows the device connected to the negative-pressure passage to operate in a best condition.

2. 发明专利

JP2005256844A Air suction device of internal combustion engine 审中-公开
标题翻译：内燃机空气吸气装置
公开(公告)号：JP2005256844A
公开(公告)日：2005-09-22
申请号：JP2005165320
申请日：2005-06-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAGUCHI JUNICHI , OSUGA MINORU , NOGI TOSHIJI , FUJIEDA MAMORU , KURIHARA NOBUO , OYAMA TAKASHIGE , YAMADA HIROYUKI , MAMA SHIGEYUKI
IPC分类号： F02M35/10
CPC分类号： Y02T10/121 , Y02T10/146 , Y02T10/42
摘要： PROBLEM TO BE SOLVED: To provide an air suction device of a multi-cylinder internal engine and particularly an air suction device equipped with a surge tank and an independent branch suction tube which realizes resonance supercharging by shifting the length of an air absorption passage between the low-load time and the high-load time of the engine, thereby obtaining the air absorption passage length matching the operation state of the engine. SOLUTION: The air suction device is so composed that the independent branch air suction tube surrounds the circumference of the surge tank, and a switching device designed to shift the length of the independent branch air suction tube is installed jointly with the air suction device. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种多缸内置发动机的吸气装置，特别是配备有缓冲罐和独立分支吸管的吸气装置，其通过移动吸气长度来实现共振增压在发动机的低负载时间和高负载时间之间通过，从而获得与发动机的操作状态相匹配的吸气通道长度。解决方案：吸气装置的结构是独立的分支空气吸入管围绕缓冲罐的周边，并且设计成使独立分支吸气管的长度移动的开关装置与吸气设备。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JPH0842404A VACUUM CONTROLLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0842404A
公开(公告)日：1996-02-13
申请号：JP17645594
申请日：1994-07-28
申请人： HITACHI LTD
发明人： WADA KENICHI , MAMA SHIGEYUKI
IPC分类号： F02M25/07 , F15B15/10 , F15B15/24
摘要： PURPOSE:To secure the extent of highly accurate throttle valve intermediate opening by keeping the intermediate stroke of an actuator, controlling the throttle valve opening, constant at all times. CONSTITUTION:A member closing a hole part of a throttle valve half-opening nipple of an actuator 1 is installed in a diaphragm 3, setting up an orifice 5a at the side of a throttle valve full-opening nipple 5, and the side of this nipple 5 are made up so as to be supplied with both of negative pressure and atmospheric pressure. Accordingly, an intermediate stroke of the actuator 1 can be kept constant, whereby any opening variations in time of throttle valve half-opening are solved, and thus highly accurate throttle valve intermediate opening is securable.

4. 发明专利

JPS6114346B2 JPS6114346B2 - 失效
公开(公告)号：JPS6114346B2
公开(公告)日：1986-04-18
申请号：JP113978
申请日：1978-01-11
申请人： Hitachi Ltd
发明人： KONUKI KEIICHI , NAKAGAWA TOORU , MAMA SHIGEYUKI
IPC分类号： F02B1/04 , F02M3/10 , F16B41/00
CPC分类号： F02M3/10 , F02B1/04 , F02M2003/105 , F16B41/005 , Y10S261/38 , Y10S261/84 , Y10T137/1789 , Y10T137/7062 , Y10T137/71

5. 发明专利

JPS53122066A NEGATIVEEPRESSURE RESPONSIVE SERVO MOTOR 失效
公开(公告)号：JPS53122066A
公开(公告)日：1978-10-25
申请号：JP3534477
申请日：1977-03-31
申请人： HITACHI LTD
发明人： MAMA SHIGEYUKI , KONUKI KEIICHI
IPC分类号： F15B15/10 , F15B15/00
摘要： PURPOSE:To provide a mechanical switching function by setting up a magnetic circuit between a negative-pressure side diaphragm and a negative-pressure side casing, with the force of attraction adjusted to be smaller than the recoil strength of a spring which is arranged for returning the diaphragm back to the original position.

6. 发明专利

JPS5285719A THREEEWAY VALVE 失效
公开(公告)号：JPS5285719A
公开(公告)日：1977-07-16
申请号：JP87476
申请日：1976-01-07
申请人： HITACHI LTD
发明人： MAMA SHIGEYUKI
IPC分类号： F16K11/04 , F16K11/10

7. 发明专利

JP2003161155A INTAKE SYSTEM FOR INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2003161155A
公开(公告)日：2003-06-06
申请号：JP2002276542
申请日：2002-09-24
申请人： HITACHI LTD
发明人： YAMAGUCHI JUNICHI , OSUGA MINORU , NOGI TOSHIJI , FUJIEDA MAMORU , KURIHARA NOBUO , OYAMA TAKASHIGE , YAMADA HIROYUKI , MAMA SHIGEYUKI
IPC分类号： F02B31/00 , F02B31/02 , F02D41/04 , F02D41/06 , F02M25/07 , F02M35/10 , F02M35/104 , F02M69/00 , F02M69/04 , F02M69/32
摘要： PROBLEM TO BE SOLVED: To provide an intake system which generates a swirl of an adequate strength in accordance with a speed and a load of an engine, offers good intake characteristics under full load of the engine, an outstanding fuel response, and an outstanding air response when torque is increased due to operation of auxiliaries. SOLUTION: An auxiliary fluid passageway 210 is provided in addition to a main passageway 202 of an intake pipe. An outlet 213 of the auxiliary fluid passageway 210 is open to an independent intake pipe near an intake valve. A plurality of types of fluid are drawn in, including air and EGR gas. A plurality of control applications are also provided, including applications for idle control, torque increase, and EGR. Any of these types of fluid is controlled by an intake control valve 211 provided in the auxiliary fluid passageway 210. The internal volume of the auxiliary fluid passageway 210 is built smaller than that of the main air passageway. This design feature allows a required amount of fluid to be quickly supplied to the engine, which helps improve response during idling, torque increase, EGR, and the like. COPYRIGHT: (C)2003,JPO

8. 发明专利

JPS6060245A FEEDBACK CARBURETOR 失效
公开(公告)号：JPS6060245A
公开(公告)日：1985-04-06
申请号：JP16792483
申请日：1983-09-12
申请人： HITACHI LTD
发明人： MAMA SHIGEYUKI
IPC分类号： F02M7/12 , F02M5/10 , F02M7/133 , F02M7/20
摘要： PURPOSE:To prevent fuel flow from being disordered by fuel vapor produced when a solenoid valve of a feedback carburetor is opened and closed, by disposing the portion where an auxiliary fuel passage opened and closed by said solenoid valve joins a main fuel passage to locate in a main well. CONSTITUTION:A valve 6 actuated by an electromagnetic coil 4 of a feedback carburetor functions to keep the air-fuel ratio at a required value by controlling the fuel flow rate through an auxiliary fuel passage 20 by opening and closing a fuel orifice 7. The auxiliary fuel passage 20 is opened in a main well 2. With such an arrangement, fuel vapor produced when a solenoid valve 6 is opened and closed is introduced into the main well 2 and flows upward therein, so that the vapor does not enter into a fuel passage 12. Therefore, adverse influence by the fuel vapor can be prevented particularly at the time of low- speed operation of an engine.

9. 发明专利

JPS54118924A CARBURETER ACCESS PREVENTIVE DEVICE 失效
公开(公告)号：JPS54118924A
公开(公告)日：1979-09-14
申请号：JP2540478
申请日：1978-03-08
申请人： HITACHI LTD
发明人： KONUKI KEIICHI , NAKAGAWA TOORU , TAKAMARU TAKESHI , MAMA SHIGEYUKI
IPC分类号： F02D9/02 , F02D9/10 , F02M3/10
摘要： PURPOSE:To prevent users from adjusting a screw by screwing it in the specific direction and providing a guide that blocks the head of it. CONSTITUTION:A slanted screw hole is made in the external face of a carbureter 1, facing to a choke valve lever 5. An adjusting screw 7 loaded with a compression spring 8 is screwed in the screw hole, whose head is enclosed by a guide 6. After a manifold 2 and the carbureter 1 are installed, to adjust the adjusting screw 7, a tool such as a screwdriver must be inserted into the slanted guide 6 so that users' access to the adjusting screw 7 can be prevented.

10. 发明专利

JPS5495836A CARBURETER ADJUSTMENT LOCKING DEVICE 失效
公开(公告)号：JPS5495836A
公开(公告)日：1979-07-28
申请号：JP113978
申请日：1978-01-11
申请人： HITACHI LTD
发明人： KONUKI KEIICHI , NAKAGAWA TOORU , MAMA SHIGEYUKI
IPC分类号： F02B1/04 , F02M3/10 , F16B41/00
摘要： PURPOSE:To block the user's access without fail by covering the operation parts of a carbureter adjuster. CONSTITUTION:A covering member 9 through which an adjusting hole 10 is made is mounted on an intake pipe 3. After a carbureter 1 is fit on the intake pipe 3, an adjusting screw 7 is put through the adjusting hole 10 to push a needle 8 so that the fuel opening 6 may be adjusted to provide a suitable air-fuel-ratio. A camouflage cap 11 is used to block the adjusting hole 10 and seals it. As any user except the manufacture can not access to the adjusting hole 10 to adjust, increase in noxious composition in exhaust gas, waste of fuel, and a potential accident caused by improper maintenance of an engine may be eliminated.

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