• 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:
    A carburetor assembly has a primary passage to supply a lean mixture to main combustion chambers of an engine, and has an auxiliary passage to supply a rich mixture to auxiliary combustion chambers of the engine. A throttle valve in each passage is provided with a shaft, and linkage connects the two shafts for coordinated motion. A choke valve in the primary passage is connected to the primary throttle valve so that positioning of both the primary throttle valve and the auxiliary throttle valve are affected when the choke valve is in operation. Structure is provided to limit opening movement of the choke valve to different extents, depending on the ambient temperature at the time of starting the engine.
    公开号:SU820668A3
    申请号:SU742048419
    申请日:1974-07-29
    公开日:1981-04-07
    发明作者:Сисидо Тосимаса；Ацуми Минору
    申请人:Хонда Гикен Когио Кабусики Кайся (Фирма)；
    IPC主号:
    专利说明:

    (54) CARBURETTOR FOR INTERNAL ENGINE
    Combustion
    FIG. 1 shows a carburettor for an internal combustion engine, front view with partial section; in fig. 2 - view A of FIG. one; in FIG. 3 - vacuum drive, vertical section; in fig. 4 - option carburetor exhaust; in fig. 5 is a view B of FIG. four; in fig. 6 shows a section bb of FIG. four; in fig. 7, - carburetor during the start-up of the internal combustion engine at an ambient temperature above 15 ° C; in fig. 8 - the same, at a temperature below 15 ° С.
    The carburetor (Fig. 1) for an internal combustion engine comprises a housing 1 with a flow channel 2 and throttle 3 installed in it and air 4 dampers mounted on rollers 5 and 6 connected by a lever system, including lever 7 mounted on roller 5 8 and a pivoting arm 9 (FIG. 2), located on the axis 10 of the housing 1, a drive element 11 rigidly connected to the axis 6, provided with a protrusion 12, and a driving device made in the form of a bimetallic spring 13 connected to the protrusion 12 and located in the heating chamber 14, images constant placed on the housing 1, the cover 15 with the electric heater 16.
    The roller 6 passes through the fixed sleeve 17 of the housing 1, on which the rotary element 18 is installed, having a protrusion 19, a vacuum of the drive 21 (Fig. 3) pivotally connected to the thrust 20, and a protrusion 22. On the housing 1 a rotary temperature-sensitive element a sleeve 23 with a washer 24 having stepped cam surfaces 25-27 for a protrusion 22 and with a bimetallic control spring -28, one end of which is connected to a pin 29 fixed to the housing 1 and the second to a plate 24. The sleeve 23 is placed on axis 30 located nesosno with roller 6 in Air damper 4.
    On the stationary sleeve 17, the element 31 is rotatably connected by means of a torsion spring 32 to a driving element 11 and provided with arcuate supports 33 and 34, which are in contact with the projections 35 and 36 of the lever 9 of the lever system.
    Elements 18 and 31 interact with the drive element 11 via a longitudinal protrusion 37. The carburetor has an additional flow channel with an additional throttle valve (not shown in the drawing) located there to provide power to the main and additional combustion chambers of the internal combustion engine.
    The carburetor works as follows.
    When the ambient temperature is below 25 ° C, the damper 4 is closed and the throttle damper 3 is open. At the initial moment of the engine start-up, the flow of air passes downstream of the flow channel 2 and acts on the air damper 4, slightly opening it due to its eccentric position on the roller 6. Open-opening is opposed by the force of the torsion 32 and bimetallic 13 springs. When the engine starts to rotate, the vacuum actuator 21 will move the thrusts 20 to the right and rotate the element 18 up to the stop by the projection 22 into the cam surface 25 of the clamp 24, thereby limiting the opening of the air damper 4 to the vacuum actuator 21.
    Since the bimetallic spring 13
    at the initial moment is cold, then her effort
    closing the air damper 4 is in
    the initial moment is maximum, and the protrusion 35 interacts with the arcuate stop 33, limiting the opening of the air damper 4.
    After starting the engine, the electric heater 16 provides for relatively fast heating of the bimetallic spring
    13, in connection with which its force is reduced, and the element 31 is rotated, in connection with which the air damper 4 is able to open fully. Simultaneously, through the rotation of the arcuate diodes 33 and 34 leads to the contacting of the latter with the ledge 35, ensuring the rotation of the throttle) Noah valve 3 in a predetermined position.
    As the engine warms up, the temperature of the bimetallic control spring increases, which rotates the sleeve 23 with the washer 24, and therefore the vacuum actuator 21 has the ability to turn the air damper 4 more towards the open, since the protrusion 22 does not come into contact with the cam on the surface 25, and on the surface 27.
    The lever system provides the initial starting time when the accelerator pedal is depressed, forcing the air damper 4 to open simultaneously with the opening of the throttle damper 3, so that the enrichment of the air-fuel mixture is reduced and the engine is reliably started. This is achieved by contacting the protrusion 36 with the drive element 11. After removing the LIA from the accelerator pedal, the carburetor elements are moved to the position shown in FIG. 1 and 2, and the engine is heated when tested with an enriched mixture.
    FIG. 3 shows an embodiment
     vacuum drive 21, which has a working chamber 38 connected to the throttling space of the flow channel 2 and formed by two diaphragms 39 and 40 fixed in the drive 21 and connected to each other by a movable rod 41. With the latter and with the diaphragm 39 20 ha. Diaphragm 39 is loaded with spring 42. On actuator 21, a lid 43 is mounted, which forms diaphragm 40 with liquid damping chamber 44 and a capacitor 46 connected to the latter through throttle 45. Adjusting screw 47 is installed in cap 43 to limit the vacuum o drive 21.
    When the diaphragms 39 and 40 are moved due to a change in the vacuum in the throttling space of the flow channel 2, the liquid flows from the damping chamber 44 into the tank 46 through the choke 45, and therefore the diaphragms 39 and 40 with the tight 20 are able to move in one direction or the other only smoothly. At the same time, at a lower temperature due to the high viscosity of the fluid filling chamber 44 and capacity 46, the damping effect in the vacuum drive 21 is maximum and decreases as the engine warms up.
    In another embodiment (Fig. 4-6) of the carburetor, on the roller 5 of the throttle valve 3 is installed a lever 48 connected by means of a rod 49 with a spring 50 to a lever 51 mounted on the roller 52 of an additional throttle valve 53 placed in the additional flow channel 54, providing food enriched fuel-air mixture of additional combustion chambers of the engine. The lever 48 has a protrusion 55 in contact with the shoulder 56 of the two shoulders lever 57 located on the axis 58 fixed in the housing 1. The roller 6 of the air damper 4 passes through the sleeve 59 installed in the housing 1. On the sleeve 59, the sleeve 60 is rotatably positioned a clamp 61, in which the end-hinge 62 of the hand-operated cable 63 is fixed, having a handle 64 with a brush 65, a tube 66 and a ball retainer 67. The tube 66 is fixed to the wall 68 of the cabin. A washer 61 connects one end of the torsion spring 69, the other end of which is fixed to the housing 1. The spring 69 and the sleeve 70 are concentric. The sleeve 70 is made as one piece with the housing I.
    The hub 59 is fitted with a drive element 71 connected by means of a pin 72 with a pull 20 of a vacuum drive 73, whose working chamber 74 is connected via channel 75 to the throttle spacing & of the flow channel 2. The vacuum drive 73 has a spring-loaded diaphragm 76 which is rigid associated with a pull 20. The drive element has a protrusion 77 that interacts with the longitudinal protrusion 78 of the lever 79 rigidly mounted on the roller 5. Concentric to the sleeve 60, a second torsion spring 80 is installed, one end of which interacts with the longitudinal 78, and the other with a washer 61.
    The puck 61 has a cam surface 81 which serves to contact
    with the two shoulders pusher 82 and the pusher 83 of the pivoting element 84 mounted on an axis 85 that is not axial with the roller 6. The pivoting element 84 also has a torsion spring 86 and a limiting stop 87 which serves to contact the protrusion 88 formed on the drive element 71.
    The carburetor works as follows.
    At ambient temperature
     above 15 ° C, the engine is started when the handle 64 is moved until the pin 65 is positioned on the ball retainer 67. As a result, the swivel element 80, double-arm lever 57, washer
    5 61 and the carburetor lever 48 will occupy the positions shown in FIG. 7. As soon as the engine shaft begins to rotate, the vacuum drive 73 will move the air damper 4 to the position (FIG. 7) that is not fully open. After the engine is heated, the knob 64 is displaced so (Fig. 1) that the air damper 4 is fully opened, providing the engine with the required rich mixture.
    When the ambient temperature is below 15 ° C, the handle 64 is moved to the most extended position, i.e., the ball retainer 67. The pivot element 84, Dg ,,,: - the lever 57, the washer and the lever 48 occupy the positions shown in FIG. 8. After starting the engine, the priming element 71 is moved by the vacuum actuator 71 until the speaker comes into contact with the limit stop 87, and the air damper 4 ne is set to the position along:;:; pa pas. 4. After the end of the propeller and the engine, the handle is transferred to the position shown in FIG. 1, and the air damper 4 is moved to the full open position.
    At each position of the air damper 4 during start-up, the throttle:,: e valves 3 and 53 are moved, ensuring the mixture is supplied both to the main combustion chamber of the engine and to an additional one.
    Thus, such an embodiment of the carburetor improves the accuracy of the installation of all its dampers during start-up, warm-up and engine operation.
    权利要求:
    Claims (7)
    [1]
    1. A carburetor for an internal combustion engine, comprising a housing with a flow channel and throttle and air dampers installed therein, located on rollers connected by a lever system, coupled to a roller of an air damper and connected to the latter a vacuum drive and a drive device , characterized in that, in order to improve the accuracy of the installation of the flaps, a rotatable temperature-sensitive element is placed on the housing, located on an axis that is not coaxial with the air flap roller, and abzhenny limiting abutment and the drive member is formed with a projection for abutment with the restriction vzaimodeyCTjBHH.
    [2]
    2. Carburetor according to claim 1, characterized in that the rotary temperature-sensitive element is provided with a pusher, and the drive element has a contact portion with it.
    [3]
    3.Karbyurator on PP. 1 and 2, characterized in that the drive unit is designed as a manual control cable.
    [4]
    4. Carburetor according to claim 3, characterized in that the lever system is provided with a second pusher adapted to be connected to the contacting portion of the drive element.
    [5]
    5.Karbyurator on PP. 1 and 2, characterized in that the housing has a heating chamber, and the drive device is in the form of a bimetallic spring installed in the heating chamber.
    [6]
    6.Karbyurator on PP. 1-5, characterized in that the vacuum drive is provided with a tank and a shock-absorbing chamber connected to it via a throttle and has an adjusting screw.
    [7]
    7.Karbyurator on PP. 1-4-6, characterized in that the rotary temperature-sensitive element is equipped with a bimetallic control spring, and its limiting stop is made in the form of several stepped cam surfaces for interacting with the projection of the drive element., Information sources taken into account during the examination 1. Patent US No. 3321193, cl. 261-39, pub. 1967. // // // .. / 87 88
    7S9 SO
    6
    71 (rig. 5
    83 6 79
    (four
    85
    7
    IVZ
    80
    55
    FIG. eight
    类似技术:
    公开号 | 公开日 | 专利标题
    SU820668A3|1981-04-07|Carburator of internal combustion engine
    US3934571A|1976-01-27|Carburettors for internal combustion engines, with an auxiliary starting device
    US3886917A|1975-06-03|Carburetor with automatic choke
    US2998233A|1961-08-29|Automatic choke
    US2979047A|1961-04-11|Automatic choke for small carburetors
    US4094931A|1978-06-13|Carburetor assembly
    SU841602A3|1981-06-23|Assembly of air flap of carburator of internal combustion engine
    US3263974A|1966-08-02|Constant metering force carburetor
    SU735187A3|1980-05-15|Carburettor for ic engine
    US2694558A|1954-11-16|Charge forming device
    US4181107A|1980-01-01|Carburetor choke valve controlling device
    US3835831A|1974-09-17|Automatic cold starting devices for internal combustion engines
    SU993832A3|1983-01-30|Carburettor for internal combustion engine
    US2702536A|1955-02-22|Automatic choke control
    USRE22968E|1948-01-27|stanton
    US3484220A|1969-12-16|Carburetors for internal combustion engines
    US3044751A|1962-07-17|Chokeless carburetor
    US2818238A|1957-12-31|Carburetor
    US4147146A|1979-04-03|Fuel supply system
    GB1466544A|1977-03-09|Carburetor choke system
    US4170615A|1979-10-09|Carburetor with second choke break
    US2215614A|1940-09-24|Carburetor
    US3058727A|1962-10-16|Automatic choke
    US2092297A|1937-09-07|Carburetor and control means therefor
    US2989293A|1961-06-20|Automatic choke
    同族专利:
    公开号 | 公开日
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    引用文献:
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    DE1261738B|1964-09-17|1968-02-22|Hermann Beichle Fa|Mixing device|
    FR1464586A|1965-03-27|1967-01-06|Inst Francais Du Petrole|Process allowing the combustion of globally lean mixtures in positive-ignition engines and devices for its implementation|
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    US3406667A|1966-09-29|1968-10-22|Alvin W. Evans|Ignition amplifying apparatus|
    US3543736A|1967-11-18|1970-12-01|Toyoda Chuo Kenkyusho Kk|Internal combustion engine with subcombustion chamber|
    FR2040848A5|1969-04-15|1971-01-22|Brev Etudes Sibe|JPS5224603B2|1973-11-07|1977-07-02|Honda Motor Co Ltd|
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    FR2481497B1|1980-04-28|1984-05-18|Val Rex|
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    法律状态:
    优先权:
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    US00383785A|US3837322A|1973-07-30|1973-07-30|Carburetor choke|
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