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1. 发明专利

CA1182354A CARBURETOR WITH MEANS FOR ADJUSTING THE IDLING SPEED 未知
公开(公告)号：CA1182354A
公开(公告)日：1985-02-12
申请号：CA385237
申请日：1981-09-04
申请人： HITACHI LTD
发明人： ONUKI KEIICHI , NAKAGAWA TOORU , INOUE TADASHI
IPC分类号： F02M3/06 , F02M3/09 , F02M11/00
摘要： : A carburetor for an internal combustion engine has apparatus for readjusting the idling speed to compensate for added electical loads. The apparatus comprises a bypass passage one end of which communicates with the air suction conduit of the carburetor upstream of the throttle valve while its other end communicates with the same downstream of the throttle valve. A fuel passage supplies fuel into the bypass passage to make a fuel-air mixture. A solenoid valve provided in the bypass passage controls the quantity of fuel-air mixture in response to the operation of an electrical load, such as a heater, fan, lights, air conditioner, etc. While the idling speed tends to be decreased by such operations it is readjusted to bring the speed back to the rated value by supplying the fuel-air mixture to the air suction conduit.

2. 发明专利

DE3135108A1 未知
公开(公告)号：DE3135108A1
公开(公告)日：1982-04-01
申请号：DE3135108
申请日：1981-09-04
申请人： HITACHI LTD
发明人： ONUKI KEIICHI , NAKAGAWA TOORU , INOUE TADASHI
IPC分类号： F02M3/06 , F02M3/09 , F02M3/08
摘要： A carburetor has an apparatus for compensation of idling revolution of an internal combustion engine. The apparatus comprises a bypass passage one end of which is opened to the air suction conduit of the carburetor upstream of a throttle valve, the other end opened to the same downstream of the throttle valve. A fuel passage supplies fuel into the bypass passage to form a fuel-air mixture, a solenoid valve provided on the bypass passage for controlling a quantity of the fuel-air mixture in response to operation of a load such as, for example, heater, a radiator fan, lights, an air conditioner, etc. so that the idling rotational speed to be decreased by such operations is compensated by supplying fuel-air mixture into the air suction conduit.

3. 发明专利

JPH09108894A PRESS 失效
公开(公告)号：JPH09108894A
公开(公告)日：1997-04-28
申请号：JP27312895
申请日：1995-10-20
申请人： HITACHI LTD
发明人： FURUYAMA BUNJI , SATO TOSHIMITSU , INOUE TADASHI
IPC分类号： B30B15/06 , B30B1/18
摘要： PROBLEM TO BE SOLVED: To obtain a press with which the process number of >=3 processes is enabled without lowering accuracy and productivity and straight-line materials handling of a material to be worked is possible. SOLUTION: A slider 15b is arranged on a circular arc having the radius R1 around a driving shaft 11 and the sliders 15b, 15c are arranged on the circular arc having the radius R2 (

4. 发明专利

JPH02305352A AIR VENT DEVICE FOR CARBURETOR 失效
公开(公告)号：JPH02305352A
公开(公告)日：1990-12-18
申请号：JP12434889
申请日：1989-05-19
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： NAKAMURA KAZUYASU , INOUE TADASHI
IPC分类号： F02M5/08
摘要： PURPOSE:To improve especially re-startability at the time of high temperature in an air vent part of a carburetor for an internal combustion chamber by closing an air vent passage at the time of high temperatural, and by opening it at the time of low temperature, and by providing structure parts which are formed of an opening memory alloy. CONSTITUTION:At an upper side of an air vent part 3 in a carburetor 1 which has a float chamber 2, there is a flap valve 14 which is formed of an opening memory alloy. In a hot soak at the time of stoppage of an engine, according to the raise of atmospheric temperature, the flap valve 14 is deformed in the form of a memory shape so as to close the air vent part 3. Consequently, the float chamber 2 is sealed, and flowing-out of evaporation fuel into an intake pipe is prevented. When the ambient temperature is decreased after the start-up of the engine, the flap valve 14 is resumed to the initial shape, and then the float chamber 2 is connected to the intake pipe. Inside pressure and pressure of the float chamber 2 are thus made equal, and fuel injection from a nozzle 13 is performed finely.

5. 发明专利

JPH01257762A FUEL INJECTION DEVICE 失效
公开(公告)号：JPH01257762A
公开(公告)日：1989-10-13
申请号：JP8297788
申请日：1988-04-06
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： NAKAMURA KAZUYASU , INOUE TADASHI
IPC分类号： F02M69/00 , F02M69/04
摘要： PURPOSE:To feed a stable air flow rate and reduce variation in air-fuel ratio by forming an intake passage body in a separate body from a fuel injector holding portion body and improving the configuration accuracy of the intake passage. CONSTITUTION:Intake passage bodies (A) 1, (B) 2 are a main body and a throttle valve 3 for measuring an air flow rate is provided on the intake passage body (B) 2. An injector holding body 5 holding a fuel injector 4 inside is installed on the intake passage body (A) 1. Seal members 7 are provided to shut off an intake passage 6 inside the main body from the outside to make the passage of gas and fluid unable. The configuration accuracy of the intake passage (A) 1 and injector holding body 5 can be improved, while also facilitating the improvement by means of machining thereof. Thus, a stable air flow rate can be fed reducing variation in air-fuel ratio.

6. 发明专利

JPS6134336A Combined carburetor 失效
标题翻译：联合加工厂
公开(公告)号：JPS6134336A
公开(公告)日：1986-02-18
申请号：JP15467284
申请日：1984-07-25
申请人： Hitachi Ltd
发明人： INOUE TADASHI , KONUKI KEIICHI , NIITSUMA SHIGETO , TAKAMARU TAKESHI
IPC分类号： F02M1/14 , F02M11/02
CPC分类号： F02M1/14 , F02M11/02
摘要： PURPOSE:To enhance the operation performance of an engine with the full opening of a secondary valve immediately after the start of the engine, by providing a solenoid valve in an atmosphere communication passage, and connecting the passage to a negative pressure passage for operating a diaphragm for opening the secondary valve, which is operated by the negative pressure at both the primary and secondary Venturi portions of a combined carburetor, so as to open the solenoid valve to keep the secondary valve from being opened when the temperature of the engine is low. CONSTITUTION:Pieces of negative pressure, which are obtained through negative pressure takeout ports 48, 50 opened into the Venturi portions of primary passage 14 and secondary passage 16 of a combined carburetor 10, are applied to the chamber 58 of a diaphragm 54 through a passage 62 to open a secondary throttle valve 38 depending on the pieces of negative pressure. An atmosphere communication passage 66 is connected to the passage 62. A solenoid valve 68 is provided for an orifice 70 in the passage 66. When the temperature of an engine is low, the solenoid valve 68 is opened to apply the atmospheric pressure to the chamber 58 of the diaphragm 54 to keep the secondary throttle valve 38 from being opened. Therefore, the secondary throttle valve 38 is not opened though a primary throttle valve is fully opened immediately after the start of the engine at the low temperature, so as to prevent the decrease in the ratio of fuel to air to enhance the operation performance of the engine.
摘要翻译：目的：通过在大气连通通道中设置电磁阀，通过在发动机启动后立即完全打开次级阀来提高发动机的运行性能，并将通道连接到用于操作隔膜的负压通道用于打开在组合的化油器的一次和二次文丘里管部分处由负压操作的次级阀，以便在发动机的温度低时打开电磁阀以保持次级阀不被打开。构成：通过在组合式化油器10的主通道14和次级通道16的文丘里部分中的负压取出口48,50获得的负压件通过通道施加到隔膜54的室58 62，以根据负压片打开次级节流阀38。大气连通通道66连接到通道62.为通道66中的孔口70设置电磁阀68.当发动机的温度低时，电磁阀68打开以将大气压力施加到室隔膜54的58以防止二次节流阀38打开。因此，在低温发动机启动后，初级节流阀完全打开，二次节流阀38不会打开，以防止燃油与空气的比例的降低，从而提高了发动机。

7. 发明专利

JPS5756627A Microswitch mechanism for detecting throttle valve opening 失效
标题翻译：用于检测节流阀开启的微波炉机构
公开(公告)号：JPS5756627A
公开(公告)日：1982-04-05
申请号：JP13067780
申请日：1980-09-22
申请人： Hitachi Ltd
发明人： NIITSUMA SHIGETO , INOUE TADASHI , HONDA YASUHIKO
IPC分类号： F02D35/00 , F02B77/08 , F02D9/00 , F02D9/02 , F02M19/00
摘要： PURPOSE: To both reduce a number of part items belonging to a microswitch and improve its waterproof and vibration resistance, by fixing the microswitch, on-off operated by sliding motion of a piston rod interlocking to a throttle valve, to a prescribed place in a charburetor.
CONSTITUTION: A carburetor main unit part consists of a choke chamber 1, metering chamber 2 and main body 3, and operation of a throttle valve shaft is transmitted to an accelerator pump through a piston rod 5 and connecting lever 4. Here an adjusting screw 7 is mounted to an end part of the above described lever 4 to lock looseness of a spring 8 simultaneously a rubber cap 6 is mounted to a choke chamber 1 located in the upper part of the screw 7. Then a microswitch 9 detecting an opening degree of the throttle valve with on-off operation by sliding motion of the above described rod 5 is arrranged in a space provided in the metering chamber 2 and fixed by a leaf spring 10 arranged in the lower part and the choke chamber 1.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了减少属于微型开关的零件，减少了防水和抗振动性，通过将微动开关固定在一起，将活塞杆与节流阀互锁的滑动运动通过固定在一个规定的位置 charburetor。构成：化油器主体部分由扼流室1，计量室2和主体3组成，节流阀轴的操作通过活塞杆5和连接杆4传递到加速器泵。这里调节螺钉7 安装到上述杆4的端部以同时锁定弹簧8的松动，橡胶帽6安装到位于螺钉7的上部的阻塞室1中。然后，检测开关9的开度通过上述杆5的滑动运动的开关操作的节气门被布置在设置在计量室2中的空间中，并且通过布置在下部的片簧10和扼流室1固定。

8. 发明专利

JPS5710750A CARBURETOR 失效
公开(公告)号：JPS5710750A
公开(公告)日：1982-01-20
申请号：JP8513580
申请日：1980-06-25
申请人： HITACHI LTD
发明人： NIITSUMA SHIGETO , INOUE TADASHI , HONDA YASUHIKO
IPC分类号： F02M5/10 , F02M11/00 , F02M15/00
摘要： PURPOSE:To prevent a bubble generation by making a primary and a secondary air intake cylinder of a multiple cylinder type carburetor to be situated in the center of a float room so that a temperature rise in each air intake cylinder can be reduced. CONSTITUTION:A primary side air intake cylinder 4 and a secondary side air intake cylinder 5 are arranged at the center of a float room to form a float room 2a and 2b which have a float 3a and 3b on their left and right respectively. And, the both float room 2a and 2b are communicating with each other via a communicating groove 7 at their center portion so that the fuel temperatures in the both rooms become the same each other.

9. 发明专利

JPS5675946A ACCELERATING PUMP OF CARBURETOR 失效
公开(公告)号：JPS5675946A
公开(公告)日：1981-06-23
申请号：JP15395079
申请日：1979-11-27
申请人： HITACHI LTD
发明人： NIITSUMA SHIGETO , INOUE TADASHI , HONDA YASUHIKO
IPC分类号： F02M7/08
摘要： PURPOSE:To keep the torque of an accelerating piston at a constant level and stabilize the driver's pedaling force, by setting a cam between the throttle valve shaft and pump rod of a carburetor accelerator. CONSTITUTION:A piston rod 7 for fixing a valve 10 of accelerating piston 8 is engaged with a pump rod 1 through a pin 14, the rod 1 being geared to a throttle valve shaft 13. The shaft 13 is equipped with a cam 20 which is kept in touch with a roller 15 fixed to the tip of the rod 1. Springs 17 are put on a roller shaft 16 and pins 18, while those pins are planted on the cam sides at a distance equal from the cam 20, in order to keep the roller 15 in touch with the cam 20 under a constant tension.

10. 发明专利

JPS54106733A AUTOMATIC CHOKE MECHANISM OF CARBURETER 失效
公开(公告)号：JPS54106733A
公开(公告)日：1979-08-22
申请号：JP1247578
申请日：1978-02-08
申请人： HITACHI LTD
发明人： NOUZUKA HIROBUMI , INOUE TADASHI
IPC分类号： F02M1/10
摘要： PURPOSE:To improve the following property eliminating friction between links with an adjust lever interposed in a link mechanism for automatically controlling the opening of the throttle valve when the engine is wormed up for starting. CONSTITUTION:This relates a mechanism designed to return the choke valve not illustrated to the idle opening according to the warming up of the engine by interlocking a first idle cam connected to a valve shaft 3 of a choke valve 4 in a carbureter therewith through a cam lever 8 and a rod 11. In linkage with a plunger 37 to be in contact with a temperature sensor 25 connected to a connecting rod 17, push lever 30, an adjust lever 32 and a heater 26, the idle cam 25 is driven with the expansion of the sensor 25. The push and adjust levers 30 and 32 are pivotted rotatively on a shaft 20 through a guide 31 while the end of the adjust lever 32 is brought into contact with the tip of a adjusting screw 35 fixed to the push lever 30.

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