• 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 system for regulating the injection of auxiliary air into the intake of internal combustion engines includes a pressure-regulating stage feeding an intermediate compartment with an intermediate pressure proportional to that in the engine's intake manifold, and an opening-regulating stage through which air flows from the intermediate compartment toward the intake chamber communicating with the manifold. The opening-regulating stage includes a metering valve activated by a membrane which is controlled by a control pressure obtained by joining a compartment on one side of the membrane to intake pressure through a conduit having a metering orifice or choke thereon and also joining the compartment to an intermediate compartment through an electrically-activated valve the opening of which is controlled by a current at the frequency of the engine. The variable opening time of the electrically-activated valve is determined as a function of the engine frequency and the output from an overlying probe in the engine exhaust.
    公开号:SU860714A1
    申请号:SU762377197
    申请日:1976-07-09
    公开日:1981-08-30
    发明作者:Ривер Жан-Пьер
    申请人:Режи Насьональ Дез Юзин Рено Отомобиль Пежо (Фирма)；
    IPC主号:
    专利说明:

    (54) ELECTROPNEUMATIC DEVICE TO ADJUST ADDITIONAL AIR INJECTION The invention relates to engine engineering, in particular to electropneumatic devices for regulating the introduction of additional air. Electropneumatic devices are known for regulating the introduction of additional air into the intake manifold of an internal combustion engine, comprising an injection port, the opening of which is located in the intake manifold, communicated with each other by means of an intermediate compartment, a pressure control stage and an opening control stage, the latter having a central compartment communicated with the inlet external pipeline and spring-loaded metering spool placed between the central and external sekami and connected rod with a membrane separating the outer compartment into first and second chambers to ensure the closure of the metering valve, with a control membrane of the solenoid valve with a variable duration of opening, the adjustable depending on the engine speed and determines edogo elektrovychisli tion machine on the frequency of the engine and. A disadvantage of the known device is that with a rapid change in the mode of operation of the device, inaccuracies in its operation arise. The purpose of the invention is to improve the accuracy of the pneumatic control of the additional air. This goal is achieved by the fact that in a known electro-pneumatic device, the first chamber communicates with the central compartment by the first narrowing, and the second chamber is connected with the central compartment by the second narrowing and with the intermediate compartment through an electro-valve. FIG. 1 shows an electropneumatic device for regulating the introduction of additional air; in fig. 2 shows an embodiment of the device. The device for regulating the inlet of additional air comprises an inlet pipe 1 of the internal combustion engine, an injection channel 2 whose opening is located in the inlet pipe 1, a pressure control stage 3 and an opening control stage 4 communicated with each other by means of an intermediate compartment 5. The control stage 4 has a central compartment 6, communicated with the inlet pipe 1. Between the central compartment 6 and the external compartment 7 is placed a spring-loaded metering valve 8 and connected to the station 9 rzhnem membrane 10 separating the external compartment 7 to the first chamber 11 and second chamber 12 to ensure the closure of the metering valve 8. The control membrane 10 is effected electrovalve 13.
    The first chamber 11 communicates -ja with the central compartment 6 by the first narrowing 14 and the second chamber 12 of the external compartment
    7 connected to the central compartment
    b by the second restriction 15 and pipe 16 with the injection channel 2, or with the central compartment b. On the other hand, the external compartment 7 is connected to the intermediate compartment 5 through pipelines 17 and 18 through the solenoid 13, the pressure is connected to the duct with the inlet pipe 1 or with the central compartment 6, Step 3 contains a valve 20 through which the intermediate compartment 5 communicates with the atmospheric pressure and the valve 20 is controlled by the stem 21 of the membrane 22, which opens are spring 23. In the intake conduit 1, a throttle valve 24, solenoid valve 13 is connected to a source of DC power and is turned on in synchronism with the rotational speed of the crankshaft, and the duration of incorporation depends on the frequency of rotation of the motor shaft or controlled depending on the composition of exhaust gases. Rod stroke 9 or metering opening
    8 is proportional to the amount of air drawn in by the engine. The constant current controlling the operation of the solenoid valve 13 is selected by an electronic computing machine depending on the result of the analysis of the exhaust gases produced by the probe. The probe works on the system all or nothing in the narrow limit. The electronic computer must first
    depending on the time, integrate the rectangular signal sent by the probe before generating the magnitude of the rectangular current per hour of TOF. that the current sends to the electro-valve 13. At the same time, the time t is corrected in inverse proportion to YP. Regulation is integral.
    The device is sensitive not only to the intake pressure, but also to a change in this pressure. The absolute pressure Pc increases dramatically with the sudden opening of the throttle valve 24, which precedes the period
    accelerating, then the pressure increases in the first chamber 11, which causes the closure of the metering spool 8 and reduces the dose of injected additional air. During this period it is necessary to enrich the mixture and at the same time not to hinder the acceleration pump,
    When the intake pressure drops sharply, which is possible if the throttle valve 24 is sharply closed (slowing down period, then the first chamber 11 is emptied faster than the outer compartment 7, which leads to a greater opening of the spool 8.
    This increases the dose of injected additional air and reduces the formation of hydrocarbons. The proposed automatic control system is differential.
    The device allows the implementation of a simultaneously proportional and differential system automatically. control, which ensures optimal performance due to automatic control systems.
    The movement of the rod 9 is related to the flow rate of the air drawn in by the engine, which, in addition to controlling the additional air injection, allows controlling the operation of the variable jet nozzle of the gasoline injection into the carburetor with a constant vacuum (Fig. 2),
    The constant dilution carburetor 25 has an eccentric damper 26, the rotation axis 27 of which is provided with a return spring 28, and the throttle damper 24, under which also the air injection channel 2 is located. is controlled by the needle 31, the needle 31 can be controlled directly from the metering spool 8, i.e. it can be rigidly connected to the rod 9, for example, in the form of its continuation, while the stop screw 19 can be transferred sen in the corresponding node or replaced by another stop regulating device. This option provides metering accuracy, is carried out by an automatic control system.
    权利要求:
    Claims (1)
    [1]
    1. For France 2235287, CL, F 02 M 23/04, published. 01.24.75.
    类似技术:
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    CA1076900A|1980-05-06|Fuel supply apparatus for internal combustion engines
    SU860714A1|1981-08-30|Electropneumatic device for control of additional air inlet
    US3669424A|1972-06-13|Carburetor of variable-area venturi type
    SU869568A3|1981-09-30|Power supply system of internal combustion engine
    GB1156796A|1969-07-02|Improvements in or relating to Fuel Systems for Gas Turbine Engines Operating at Variable Pressure.
    US4092380A|1978-05-30|Carburetors for internal combustion engines
    WO1997002424A1|1997-01-23|Variable displacement metering pump
    US3948236A|1976-04-06|Method of regulating the fuel supply of internal combustion engines
    US4211201A|1980-07-08|Fuel supply apparatus for internal combustion engines
    US4311126A|1982-01-19|Fuel injection apparatus and system
    US3188062A|1965-06-08|Carburetor
    US2623510A|1952-12-30|Governor for internal-combustion engines
    US5732682A|1998-03-31|Fuel amount control
    US2749898A|1956-06-12|Fuel injection control
    US2201693A|1940-05-21|Carburetor control
    US4125100A|1978-11-14|Method and apparatus for controlling the operating mixture supplied to an internal combustion engine
    US4156415A|1979-05-29|Fuel-air mixture control apparatus
    GB601275A|1948-05-03|Charge forming device for internal combustion engines
    US3930479A|1976-01-06|Fuel metering device for externally ignited internal combustion engines with compression of the air-fuel mixture
    US5394840A|1995-03-07|Fuel supply system
    同族专利:
    公开号 | 公开日
    SE7607783L|1977-01-12|
    IT1071245B|1985-04-02|
    GB1541618A|1979-03-07|
    BE843965A|1977-01-10|
    SE421947B|1982-02-08|
    US4109623A|1978-08-29|
    DE2631020A1|1977-01-20|
    FR2317511B1|1977-12-09|
    FR2317511A1|1977-02-04|
    JPS585079Y2|1983-01-28|
    DE2631020C2|1982-04-08|
    JPS5266831U|1977-05-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1186266B|1957-09-18|1965-01-28|Svenska Aeroplan Ab|Device for achieving uniform idling of a multi-cylinder two-stroke internal combustion engine, preferably a carburetor engine|
    DE1576460C3|1967-12-15|1974-06-06|Atox Trust Reg., Vaduz|Device for supplying additional air to the intake system of a mixture-compressing internal combustion engine|
    GB1282880A|1968-12-06|1972-07-26|Lucas Industries Ltd|Systems for controlling internal combustion engine idling speeds|
    DE2014633C2|1970-03-26|1983-11-10|Robert Bosch Gmbh, 7000 Stuttgart|Device for controlling the mixture fed to an externally ignited internal combustion engine|
    JPS5143128B2|1972-04-28|1976-11-19|
    FR2195262A5|1972-08-02|1974-03-01|Laprade Bernard|
    JPS4982820A|1972-12-16|1974-08-09|
    US3841282A|1973-02-28|1974-10-15|Ford Motor Co|Air supply valve|
    FR2224690B2|1973-04-06|1975-08-22|Peugeot & Renault|
    FR2272273B2|1973-06-27|1980-01-11|Laprade Bernard|NL7416472A|1974-12-18|1976-06-22|Ir Willem Otto Lieuwen|DEVICE FOR REGULATING THE AIR SUPPLY AT THE INTAKE MANIFOLD OF A COMBUSTION ENGINE.|
    JPS59201946A|1983-04-28|1984-11-15|Honda Motor Co Ltd|Air-fuel ratio controller for internal-combustion engine|
    JPS60150466A|1984-01-18|1985-08-08|Honda Motor Co Ltd|Intake secondary air feeder for internal-combustion engine|
    US8381521B2|2010-05-19|2013-02-26|Bendix Commercial Vehicle Systems Llc|Vehicle pneumatic booster system operating method and apparatus|
    US8468824B2|2011-02-25|2013-06-25|Bendix Commercial Vehicle Systems Llc|Method of operating a vehicle equipped with a pneumatic booster system|
    US8484971B2|2011-02-25|2013-07-16|Bendix Commercial Vehicle Systems Llc|Method of operating a vehicle equipped with a pneumatic booster system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7521960A|FR2317511B1|1975-07-11|1975-07-11|
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