• 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:
    Is described a carburator in which an electromechanical device operates on the throttle valve to define the little opening positions in function of the running conditions of the engine; the electromechanical device is controlled by an electronic control unit which receives signals came from a sensor of the cooling water's temperature, from a sensor of the r.p.m. value and a sensor of the absolute pressure existing in the intake manifold. The electromechanical device possesses organs able to operate on the choke; elastic means define a closing pressure working with a contour obtained on an extremity of a lever acted by an electromechanical device, to define the dinamic opening law of the choke, with the varation of the temperature and of the load applied to the engine.
    公开号:SU1373330A3
    申请号:SU833680398
    申请日:1983-12-19
    公开日:1988-02-07
    发明作者:Бонфиглиоли Силверио；Триоло Инночензо
    申请人:Вебер С.П.А. (Фирма)；
    IPC主号:
    专利说明:

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    The invention relates to mechanical engineering and, in particular, to carburetors for an internal engine.
    . The aim of the invention is to reduce the toxicity of the exhaust gases and fuel consumption.
    1 schematically shows the proposed carburetor for an internal combustion engine; figure 2 - section aa in Fig .-; on fig.Z - view B in figure 1; Fig. 4 is a block diagram of engine control; Fig. 3 shows the time change when the engine starts up the rotational speed and the opening angles of the air and throttle valves (at low temperature).
    The carburetor for the internal combustion engine comprises a housing I with a flow channel 2 and located in the last air damper 3, placed eccentrically on the first drive roller 4 with the possibility of turning in the direction open by the air flow passing in the flow channel 2, and throttle valve 5 placed on the second drive roller 6, the idling system, which has an emulsion channel 7, communicated with the output windows 8-10, the latter of which is equipped with an adjusting BHHTj MI 1, and a mechanical system equipped with the first roar ohm I2, rigidly connected with the first driving roller A, the second lever 13, rigidly connected with the second driving roller 6, and the third lever 14, made rotatable around the axis I5 and having the first shoulder 16 with the first contact element 17 and the second shoulder 18 With a hinge formed by a pin 19 placed in the hole and connected to the last outer ring 20, freely mounted on the drive rod 21, connected to the first lever 12 on one side, and bearing the outer ring 20 and the adjusting nut 22 on the other hand, and on the drive The stem is rigidly mounted supporting plate 23 for one of the ends of the spring 24, the other end of which is in contact with the outer ring 20.
    The carburetor is also equipped with an electric motor 25, the output shaft 26 of which through a planetary gear (figure 2), formed by the central gear 27, satellites 28. during
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    35
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    LHD 29 29 with axle 30 and an external gear made in a cylindrical housing 31 is connected with a drive shaft 32 carrying the first and second cams 33 and 34. The first cam 33 interacts with the first contact element 17, and the second cam 34 through the pusher 35, having a spring 36, interacts with the second lever 13, and the cams 33 and 34 are connected to the drive shaft 32 by means of a spline connection. A locking device 37 is fixed on the third lever I4, which is designed to limit the movement of the drive rod 21 and thus of the air damper 3 (FIG. 3), and the drive shield 21 has a stop 38, made by plastic deformation, rigidly connected with a pull 39 hinged to the first lever 12 and fitted with an adjusting screw 40, interacting with the locking device 36 and having a lock nut 41. The pusher 35 moves in the guide 42, which has an electrical output of 43 dp to ensure the signal appears when the pusher 35 comes into contact with the second lever 13.
    The electric motor 25 is of step type and is connected to the output of the electronic control device 44. The electronic control device 44 (FIG. 4) controls the positions of the air 3 and throttle 5 carburetor valves based on the signals of the computing unit 45, to the inputs 46 and 47 of which are received the signals of the sensors of the frequency of rotation of pressure in the throttling space of the intake tract and the sensor 48 of the engine temperature, installed in the cylinder head 49 (not shown). Moreover, the computing unit 45 provides the formation of the output signal in accordance with this mode of operation and sends this signal to the electronic control device 44, from the output of which the pulses go to the electric motor 25.
    Fig. 5 shows graphs of the change in time T when the engine is started at a low temperature of rotation frequency — curve 50 (when the engine is started at different temperatures of the engine); the opening angle of the air barrier
    31
    ki - curve 51 and the throttle opening angle - curve 52.
    The carburetor works as follows.
    When starting a cold engine at any negative temperature, for example, at the initial moment of time when the engine shaft does not rotate and the control elements are connected to power according to the temperature sensor 48, the computing unit 45 sends signals to the electronic control device 44, which sets in; a damper 3 at an angle, and the throttle valve 4 - at an angle ft. Moreover, the throttle valve 5 is turned with a slight excess of the opening angle than if the engine were already started at this temperature, and the air damper 3 at this angular position is completely closed and is under the influence of a spring 24 compressed with a force corresponding to this start temperature.
    When the engine shaft begins to rotate, the latter starts up quickly in a very short period of time, as the spring 24 prevents pulsation of the air flow in the intake path, preventing oscillations of the air damper 3 together with the first drive roller 4.
    Computing unit 45 receives a signal about the magnitude of the rotational speed of the motor shaft from the corresponding sensor, where it is compared with n, which is a reference at a given starting temperature. With


    when the rotational frequency is reached, the computation unit 45 does not generate a signal, since it has a predetermined delay, and only at time T, the air and throttle valves 3 and 5 start to open according to the signals of the computation unit 45. Moreover, the opening of the air damper 3 occurs faster, than opening throttle 5, since its position is determined, besides the position of the first cam 33, also by the magnitude of the air flow velocity in the flow channel 2 and the force of the spring 24, while the throttle position is determined by This is done only by the second cam 34, while the air damper moves to the open position, and the throttle valve 5 moves to
    15
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    close position. At each time point, for example in Tj, the computing unit 45, receiving the shaft rotational speed from the sensor, compares it with the program embedded in it and maintains the revolutions of the curve 50. In this case, the full opening of the air damper 3 occurs at the time Tj, and the throttle valve closes 5 - at the time T, at which the shaft rotation frequency will be set equal to p. The engine is heated and ready for operation. This achieves the most optimal warm-up for the engine, while the positions of the valves 3 and 5 ensure the best combustion of the air-fuel mixture, while ensuring low toxicity of the exhaust gases and economical operation of the engine.
    In the carburetor, the adjusting nut 22 compensates for the free travel between the third lever 14 and the first cam 33 and the inaccuracies in the manufacture of the spring 24, and the installation is checked on the engine by checking the positions of the cam 33 and the air damper 3. The second cam 34 must ensure the beginning of the impact on the second lever 13 with a specified advance in relation to the impact on the third lever 14, and the opening of the air damper 3 under the action of the air flow, depending on the temperature, provides t profile locking device 37.
    权利要求:
    Claims (4)
    [1]
    1. A carburetor for an electronically controlled internal combustion engine that maintains the idling speed at a predetermined level and controls the position of the air damper in the engine warm-up mode, comprising a housing with a flow channel located in the last air damper placed on the first drive roller the possibility of turning in the direction of the opening by the air flow passing through the flow channel and the throttle valve placed on the second drive roller, the main doses ruyuschuyu system equipped with spray raspolozhen1y 1m in the flow path between the air and
    a throttle valve, a mechanical system, kinematically connected with the first drive roller to provide a predetermined movement of the latter and equipped with an elastic element, an electric motor whose input shaft is kinematically connected with the mechanical system, and an electronic control device, to the inputs of which temperature sensors are connected, frequencies rotation of the motor shaft and the load of the latter, and the output of which is connected to the electric motor to ensure the installation of the air damper according to the signals from the sensors In order to reduce the toxicity of exhaust gases and fuel consumption, the carburetor is equipped with a stopping device to restrict the opening of the air damper, and the elastic element of the mechanical system is designed to close the air damper when the engine is turned off.
    [2]
    2. The carburetor of claim 1, wherein the electric motor is kinematically connected with the second drive roller, and the mechanical system is equipped with the first., Ry
    chag, rigidly connected with the first drive roller, first cam, kinematically connected with the output shaft of the electric motor, second lever rigidly connected with the second drive roller, and the third lever, the first arm of which has the first contact element in contact with the first a cam, and the second shoulder is provided with a hinge for communication with an elastic element fixed at one end by a hinge and connected with the other end to a first lever, with a locking device placed on the third lever.
    [3]
    3. The carburetor of claim I, wherein the electric motor is equipped with a planetary gear associated with the output shaft, and the mechanical system is equipped with a second cam connecting the output shaft and the second lever of the second drive roller throttle valve.
    [4]
    4. The carburetor of claim 1, wherein the first and second cams are connected to the output shaft by means of a slit joint.
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    同族专利:
    公开号 | 公开日
    AU2236783A|1984-06-28|
    EP0112308B1|1988-09-21|
    IT1157490B|1987-02-11|
    IT8203627D0|1982-12-20|
    ES8500385A1|1984-11-01|
    DE3378071D1|1988-10-27|
    JPS59155556A|1984-09-04|
    ES528163A0|1984-11-01|
    AT37427T|1988-10-15|
    US4524742A|1985-06-25|
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    EP0112308A3|1985-01-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US8495995B2|2010-06-23|2013-07-30|Briggs And Stratton Corporation|Automatic choke for an engine|US2646933A|1947-05-09|1953-07-28|Carter Carburetor Corp|Automatic carburetor choke control|
    US2957465A|1958-05-23|1960-10-25|Gen Motors Corp|Fast opening choke mechanism|
    US2926895A|1958-11-24|1960-03-01|Gen Motors Corp|Automatic choke improvement|
    US3133532A|1963-06-13|1964-05-19|Chrysler Corp|Carburetor choke control|
    US3294374A|1964-09-29|1966-12-27|Acf Ind Inc|Carburetor|
    JPS506903B2|1971-11-25|1975-03-19|
    JPS4928716A|1972-07-13|1974-03-14|
    JPS5435261B2|1972-08-10|1979-11-01|
    JPS5326608B2|1974-03-15|1978-08-03|
    US3964457A|1974-06-14|1976-06-22|The Bendix Corporation|Closed loop fast idle control system|
    US4011844A|1975-06-16|1977-03-15|Honda Giken Kogyo Kabushiki Kaisha|Automatic choke valve apparatus in an internal combustion engine|
    JPS5498424A|1978-01-19|1979-08-03|Nippon Denso Co Ltd|Air supply controller for engine|
    US4237833A|1979-04-16|1980-12-09|General Motors Corporation|Vehicle throttle stop control apparatus|
    DE2927881C2|1979-07-11|1984-06-28|Bosch und Pierburg System oHG, 4040 Neuss|Method and device for transitional enrichment in mixture formers|
    US4321902A|1980-04-11|1982-03-30|General Motors Corporation|Engine control method|
    IT1157433B|1982-02-22|1987-02-11|Weber Spa|CARBURETOR FOR INTERNAL COMBUSTION ENGINES, EQUIPPED WITH ELECTRONIC ACTING BODIES SUITABLE TO KEEP THE MINIMUM RPM OF THE ENGINE CONSTANT|FR2568631B1|1984-08-03|1987-01-16|Solex|CARBURETOR WITH AUTOMATIC STARTING DEVICE|
    DE3924353A1|1989-07-22|1991-02-14|Prufrex Elektro App|CONTROL SYSTEM FOR THE CARBURETOR OF AN INTERNAL COMBUSTION ENGINE|
    SE468998B|1992-02-20|1993-04-26|Electrolux Ab|FOERGASARSTYRNING|
    CN1123684C|2000-03-10|2003-10-08|赵济威|Automatic controller for air throttle of car|
    US7284522B2|2004-03-12|2007-10-23|Honda Motor Co., Ltd.|Automatic choke|
    US7213555B2|2004-03-12|2007-05-08|Honda Motor Co., Ltd.|Automatic choke|
    JP4199688B2|2004-03-18|2008-12-17|本田技研工業株式会社|Auto choke device|
    EP1628005B1|2004-08-18|2008-06-04|HONDA MOTOR CO., Ltd.|Carburetor electronic control system|
    JP4405340B2|2004-08-18|2010-01-27|本田技研工業株式会社|Electronic controller for carburetor choke valve|
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    CN101482073A|2007-08-13|2009-07-15|布里格斯斯特拉顿公司|Automatic choke for an engine|
    JP5058058B2|2008-04-25|2012-10-24|本田技研工業株式会社|General-purpose internal combustion engine|
    US7854216B2|2008-04-25|2010-12-21|Honda Motor Co., Ltd.|General purpose internal combustion engine|
    US8434444B2|2008-05-27|2013-05-07|Briggs & Stratton Corporation|Engine with an automatic choke and method of operating an automatic choke for an engine|
    US7628387B1|2008-07-03|2009-12-08|Briggs And Stratton Corporation|Engine air/fuel mixing apparatus|
    JP2011089471A|2009-10-22|2011-05-06|Mitsubishi Heavy Ind Ltd|Air-fuel ratio control device for carburetor|
    DE102010048773A1|2010-10-16|2012-04-19|Andreas Stihl Ag & Co. Kg|carburettor|
    DE202011000519U1|2011-03-09|2012-06-12|Makita Corporation|Engine working device with an internal combustion engine|
    EP3033512A2|2013-08-15|2016-06-22|Kohler Co.|Systems and methods for electronically controlling fuel-to-air ratio for an internal combustion engine|
    US10054081B2|2014-10-17|2018-08-21|Kohler Co.|Automatic starting system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT03627/82A|IT1157490B|1982-12-20|1982-12-20|CARBURETOR FOR INTERNAL COMBUSTION ENGINES EQUIPPED WITH ELECTRONIC ACTING BODIES SUITABLE TO MAINTAIN THE MINIMUM RPM OF THE ENGINE AND TO CHECK THE POSITION OF THE STARTING BUTTERFLY DURING THE ENGINE EFFICIENCY|
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