• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1487798 Spray carburetters TOYOTA TIDOSHA KOGYO KK 8 Oct 1975 [19 June 1975] 41326/75 Heading F1H Fuel stored in a diaphragm chamber 15 during operation of the accelerator pump piston 7 with the throttle valve 3 is injected when the pressure built up in the chamber exceeds that provided by the piston. A restrictor 10 is located in the outlet 11 of the pump discharge passage 9 and a restrictor 12 may be located at the chamber end of the passage 13 connecting the chamber 15 and the passage 9. The stroke of the diaphragm 16 is adjustable by a screw 22 and the force of the biasing spring 17 by a screw 22. The diaphragm chamber 15 may communicate via a restrictor 23' with a passage connecting the carburetter to an engine.
    公开号:SU854277A3
    申请号:SU762373640
    申请日:1976-06-18
    公开日:1981-08-07
    发明作者:Накамура Норихико；Янагихара Хиромити
    申请人:Тойота Дзидося Когио Кабусики Кайся (Фирма)；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION The invention relates to the field of engine building, in particular to the arburetor. Carburetors for an internal combustion engine are known, comprising a housing with a fuel chamber, a flow channel and the throttle valve installed in the latter, an acceleration pump, the working member of which kinematically is connected with the throttle valve working chambers are connected through a fuel outlet channel, having a throttle hole, to the flow channel, and a hydroaccumulator equipped with a movable body connected: with a load device, and having a working cavity connected through the exhaust channel to the fuel supply channel between the working chamber and the throttle hole. However, in such carburetors, the hydraulic accumulator inlet body is made in the form of a piston, and the working cavity is connected only to the fuel inlet channel, due to during the acceleration pump, fuel leaks are possible, and during the intake stroke, the fuel will flow from the hydro accumulator to the accelerator pump. which reduces the accuracy of fuel metering. The aim of the invention is to improve the metering accuracy of the fuel supply from the accelerator pump. This is achieved by the fact that the movable member of the hydroaccumulator is made in the form of a diaphragm, which is connected to the load device and forms a working cavity with the housing, and the latter is hydraulically connected to the fuel chamber by a connecting channel equipped with a check valve. Moreover, the load device has a device for regulating the force acting on the diaphragm, having an adjustable stop of maximum deflection. FIG. 1 depicts the described carburetor for an internal combustion engine in section; in fig. 2 - graphs of the pressure in the fuel-delivery channel over time with various embodiments of the carburetor. The carburetor for the internal combustion engine comprises a housing 1 with a fuel chamber 2, a flow channel 3 and the throttle valve 4 installed in the latter, an acceleration pump 5, whose working element 6 through rod 7 and kinematic chain 8 is connected to the throttle 4, and working chamber 9 connected via a toplinoprd inlet channel 10 to the flow channel 3, and a hydroaccumulator, playing a mobile organ in the form of
    diaphragm 11 mounted on the housing 1 gfi using the cover 12. The ball valve 13 and the atomizer 14 are installed in the fuel under the water channel 10, the impellations have a throttle hole 15. The working chamber 9 of the acceleration pump 5 is connected by means of the channel 16 and the check valve 17 chamber 2, and the operating element b is equipped with a spring 18. Diaphragm 11 of the hydroaccumulator of the torus forms with the case 1 a working cavity 19 connected by means of a bypass channel 20 to the fuel supply channel 10 between the working chamber 9 by an orifice 15 channel 21, equipped with a check valve 22
    with the fuel chamber 2. In the bypass channel 20 near the working cavity 19, the throttle 23 is installed, and the diggfragma 11 is equipped with a rigid center 24, made in the form of a piston. The lid 12, together with the diaphragm 11, forms the chamber 25 of the load device formed by the spring 26, one end of the connection to the rigid center 24, and rutkm to the force control device 27 screwed into the cover 12. The chamber 25 communicates with the atmosphere through POMODI channel 28 with the throttle 29. (Possible variants of carburetors in which chamber 25 is connected to the source of discharge.),
    The axis of the device 27 is equipped with an adjusting screw 30, which forms the adjustable stop for maximum deflection of the diaphragm 11.
    The work of the carburetor is as follows.
    At a constant position of the throttle valve 4, the force on the operating element b of the accelerator pump 5 from the drive of the throttle valve 4 is relieved. As a consequence, by the spring 18, the working body 6 moves upwards, and the check valve 17 opens. From the fuel chamber 2, the fuel passes through the channel 16 to the working chamber 9 and from there into the fuel supply channel .1.0, filling the latter up to the level determined by the ball valve 3; 3 Then the check valve 22 opens in the connecting channel, and according to the latter, the fuel from kg 1 of meter 2 fills the working cavity 19 of the hydroaccumulator and the bypass channel 20. At the same time, the volume of the working cavity 19 depends on the initial position of the diaphragm 11 loaded with spring 26. After filling all the channels working chuckers 9 to cavity 19, check valves 17 and 22 are closed.
    When the throttle valve 4 moves to the CTOpfjHy of increasing the rim passage section of the flow channel 3, then through the kinematics, o circuit 8 and 7, the working body 6 of the accelerator loop 5 moves down, overcoming the force of the spring 18, T) and the volume of working chamber 9 decreases with . Therefore, the pressure in the latter to in channel 10 increases, and the fuel, overcoming
    the force of the ball valve 13 begins to be injected through the orifice 15 of the atomizer 14 into the flow channel 3, mixing with the flow passing there. Since the throttle hole 15 is made behind the junction of the bypass channel 20 with the fuel supply channel 10, and the throttle 23 is located near the working cavity 19 of the hydroaccumulator, the fuel pressure is also given in the bypass 20. The ratio of the flow sections of the throttle hole 15 and the throttles 23 affects for fuel consumption through the latter, the fuel passing through the throttle 23 enters the working cavity 19 and, due to the pressure going up, shifts the diaphragm 11, which compresses the spring 26 and increases the volume of the working cavity 19. Therefore, an hour s fuel pumped yc koritelngm pump 5 into the fuel supply passage 10, to a.) zichestEe corresponding increase in the working chamber 19, jointly with the fuel, comprised within the last, accumulated in the hydraulic accumulator.
    When the injection movement of the operating element b ends, as a result of which the flow of fuel from the working chamber 9 into the fuel supply channel 10 stops, the pressure in the latter decreases, and the diaphragm 11 under the influence of the force of the spring 26 starts to inject fuel from the working cavity 19 of the hydroaccumulator through the bypass channel 20 into the fuel feed channel 10 and further through the dispenser 14 into the flow channel 3. Since the hydroaccumulator is made with a diaphragm, the entire amount of fuel stored in the working cavity 19 is injected into the valve the exact channel 3, and thereby improves the accuracy of the dosing of the fuel supply from the accelerator pump 5. After the supply of fuel to the flow channel 3 is completed and the force from the working body 6 is removed, the fuel fills channels 10 and 20, working chamber 9 and cavity 19, as described above.
    权利要求:
    Claims (2)
    [1]
    The hydroaccumulator provides the required pressure change curve in the fuel injection system of channel 10. FIG. 2 shows graphs of the pressure P in the fuel supply KaHcUie 10 over time, while line 31 shows the stroke of the working member 6 of the accelerator pump, curve 32 fuel pressure in a carburetor that does not have a hygroaccumulator connected to the working chamber of the accelerator pump 33 curve - pressure of fuel in the carburetor, in which the water channel 20 is made without drosses 23. The fuel injection time from the accelerator pump 5 is significantly increased (Fig 2) with the proposed embodiment of the carburetor from T1 to T2 and TK (curve 34). Therefore, over a longer period of time, the rotational speed of the engine is increased, and therefore the discharge in the main carburetor metering system is increased, and the required amount of fuel is supplied to the engine. The fuel supply from the accelerator pump 5 to the flow channel 3 is also regulated during the initial period of the stroke of the working body 6, as a result of which the toxicity of exhaust gases is reduced. Thus, making a torus carburetor with a hydroaccumulator connected to the accelerator pump and having a spring-loaded diaphragm provides an increase in the accuracy of the dosing of fuel supply to the engine from the accelerator pump. Claim 1. Carburetor for an internal combustion engine, comprising a housing with a fuel chamber, a flow channel and a throttle valve installed in the last one, an acceleration pump, the working body of which is kinematically connected to the throttle valve, and the working chamber is connected through a fuel inlet channel having a throttle valve an aperture to the npoT04HONr / channel, and a groomer accumulator, equipped with a movable member connected with the loading device, and having a working cavity connected through the tapping channel to the fuel supply unit the driving channel between the working chamber and the throttle hole, characterized in that, in order to improve the accuracy of the fuel supply metering from the accelerator pump, the movable body of the hydroaccumulator is made in the form of a diaphragm associated with the load device and formation of the working cavity, The latter is hydraulically connected to the fuel chamber via a connecting channel equipped with a check valve.
    [2]
    2. The carburetor according to claim 1, distinguishes between u and 8 so that the loading device is equipped with a device for controlling the force acting on the diaphragm. 3 a Carburetor according to claim 1, I differ from the fact that the diaphragm is equipped with an adjustable stop of maximum deflection. Sources of information taken into consideration during the examination 1. US Patent No. 2183636, cl. 261-34, pub. 1939.
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE2545750B2|1979-08-16|
    JPS5231235A|1977-03-09|
    DE2545750C3|1980-04-03|
    US4025588A|1977-05-24|
    DE2545750A1|1976-12-23|
    GB1487798A|1977-10-05|
    JPS5434861B2|1979-10-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU193610U1|2019-08-09|2019-11-06|Общество с ограниченной ответственностью "Топливные системы"|Carburetor accelerator piston|US2183636A|1939-12-19|Carburetor mechanism |
    US2824725A|1958-02-25|Carburetor|
    US2133033A|1935-12-12|1938-10-11|Messinger Devices Inc|Carburetor|
    US2363223A|1941-05-15|1944-11-21|Bonnier Claude Etienne|Carburetor|
    US2417734A|1943-08-11|1947-03-18|Carter Carburetor Corp|Carburetor|
    US2785880A|1949-08-09|1957-03-19|Gen Motors Corp|Carburetor|
    US2908363A|1955-12-20|1959-10-13|Gen Motors Corp|Carburetor|
    US3192864A|1962-01-19|1965-07-06|Notte Pier Vincenzo|Diaphragm pump|
    US3298675A|1963-02-20|1967-01-17|Joseph Miano|Accessory for controlling operation of carburetor accelerator pump|
    US3210011A|1963-10-28|1965-10-05|Walker Mfg Co|Device for pumping and dispensing liquid with air|
    SE318443B|1965-06-11|1969-12-08|Sibe|JPS6054498B2|1977-10-28|1985-11-30|Toyota Jidosha Kk|
    US4297108A|1978-05-10|1981-10-27|Polymer Research Corp. Of America|Desulfurization of coal|
    DE2841951C3|1978-09-27|1982-03-04|Pierburg Gmbh & Co Kg, 4040 Neuss|Carburetor for internal combustion engines with an acceleration pump|
    US4370966A|1979-03-26|1983-02-01|Ntn Toyo Bearing Co., Ltd.|Fuel feed system|
    DE2912051C2|1979-03-27|1984-04-19|Ntn Toyo Bearing Co. Ltd., Osaka|Low pressure fuel injector|
    JPH0245032B2|1982-01-26|1990-10-08|Sanshin Kogyo Kk|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP7427175A|JPS5434861B2|1975-06-19|1975-06-19|
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