• 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:
    An exhaust gas recirculator wherein a double diaphragm type flow control valve is disposed in a recirculating passage which couples an exhaust system and an intake or suction system of an internal combustion engine. The flow control valve includes first and second diaphragms, and is formed with a first pressure control chamber partitioned by a first diaphragm and a second pressure control chamber partitioned by the first diaphragm and a second diaphragm. Vacuum is introduced into the first and second pressure control chambers from vacuum ports provided in the vicinity of a throttle valve of a carburetor. Thus, the stroke of a valve shaft of the flow control valve and accordingly the opposing area between a valve body and valve seat of the flow control valve are controlled in two stages, so that the single flow control valve can control the amount of recirculative exhaust gas in two stages.
    公开号:SU876067A3
    申请号:SU762381002
    申请日:1976-07-14
    公开日:1981-10-23
    发明作者:Нохира Хидетака；Кобаси Киеси；Танака Масааки
    申请人:Тойота Дзидося Когио Кабусики Кайся (Фирма)；
    IPC主号:
    专利说明:

    (54) DEVICE OF RECYCLING OF REFRACTING GASES
    one

    This invention relates to microinstrument engineering, namely, to recirculation devices of recovered gases, carburetor engines of internal 5 combustion.
    Exhaust gas recirculation devices of carburetor internal combustion engines containing a control valve are known; a) 0 located in a recirculation channel connecting the inlet and outlet piping and equipped with first and second diaphragms rigidly connected to each other through a spacer to a rod, carrying a valve shut-off element, and a tension spring to hold the shut-off element in the recirculated shut-off position. the first diaphragm divides the valve cavity into two pressure control chambers located one above the other, and the second diaphragm separates the third chamber in communication with the atmosphere, with this 25 the second diaphragm area is larger than the first one pressure control is connected by a vacuum pipe with a hole in the inlet pipe of the engine;
    above the throttle when it is positioned to idle the engine 1.
    However, these devices do not allow sufficiently adjusting the exhaust gas bypass rate and, consequently, to achieve the necessary degree of reduction of nitrogen oxides in the exhaust gases depending on the change in engine load.
    The purpose of the invention is to reduce exhaust emissions by controlling the speed of the bypass depending on the degree of throttle opening.
    This goal is achieved by the fact that the inlet pipe is equipped with an additional hole located above the first one and connected to another pressure control chamber through an additional vacuum pipe.
    On fip. Figure 1 is a diagram of the installation of a recirculation device in the recirculation system of an internal combustion engine; in fig. 2 - valve distribution valve; in FIG. Characteristics of a vacuum valve distribution valve; n figure 4
    graph of recirculated exhaust gas.
    The internal combustion engine 1 is equipped with an air filter 2, a carburetor 3 with throttle 4, an intake 5 and an exhaust B with pipelines. The inlet pipe 5 is connected to the outlet pipe b by means of a recirculation channel 7 in which the distribution valve 8 is located. The channel 9 communicates one of the cavities of the distribution valve 8 with the inlet pipe 5 at the piac point above the throttle body 4.
    In the zone of the throttle valve 4, the inlet pipe is provided with two openings 10 and 11 for transmitting vacuum through rubber pipes 12 and 13 respectively to magnetic valves 14 and 15. Magnetic valve 14 communicates through a rubber pipe 16 to the first pressure control chamber 17, the valve 15 is communicated via a rubber tube 18 with the second pressure control chamber 19, the magnetic valves 14 and 15 are in communication with the atmosphere through the fittings 20 and 21, respectively.
    Distribution valve 8 (FIG. 2 comprises a housing 22, an inlet 23 and an outlet 24 for recycled exhaust gas.
    Above the housing 22 of the distribution valve 8, a first pressure control chamber 17 is located a second pressure control chamber 19 and a third chamber 25 in communication with the atmosphere. The pressure control chambers are separated by a membrane 26 and a membrane 27, the working area of which is somewhat larger than that of membrane 26. Inside the first chamber 17, an extension spring 28 is installed, in addition, it is equipped with a fitting 29 for transmitting a vacuum signal, and a stopper 30. Second chamber 19 equipped with a fitting 31 for transmitting a vacuum signal. Membranes 26 and 27 are rigidly connected to one another through spacer 32 with a nut33. The spacer 32 attaches both diaphragms to the stem 34 of the closure element 35 installed in the socket 36. The third chamber 25 houses the sylphs 37 attached to the body 22 of the control valve 22 on the one hand and to the stem 34 to prevent leakage of the recirculated gas to the atmosphere .
    The device works as follows.
    When starting, idling, slowing down and large, the load solenoid valves 14 and 15 do not work. When starting, idling and decelerating, when the throttle valve 4 of the carburetor is almost completely
    closed, the pressure control chambers 17 and 19 are under atmospheric pressure, as a result of which the closure element 35 is subjected to the pressure of the spring 28, so that the exhaust gas is not recirculated.
    With a large load, when the throttle valve 4 is fully open and the vacuum in the openings 10 and 11 of the vacuum transmission is low, the vacuum in the pressure control chambers 17 and 19 is low. The forces applied to the membranes 26 and 27 are less than the voltage of the spring 28, as a result of which the locking element 35 is closed and the exhaust gas is not recirculated.
    In the medium acceleration and steady-state modes, when the throttle valve 4 of the carburetor is located near the vacuum transmission port 11, the vacuum is transmitted only to the second pressure control chamber 19. The force corresponding to the difference between the areas of the second membrane 27 and the first membrane 26 lifts the locking element 35, which is installed in a position corresponding to the difference of the forces from the vacuum and voltage of the spring 28, at which a small degree of recycling of the exhaust gas occurs.
    When operating in high acceleration mode and steady-state, when the throttle valve 4 of the carburetor is located in the zone of the openings of the vacuum transmission 10 and 11, the vacuum is transmitted to the first and second pressure control chambers 17 and 19, and the magnetic valves 14 and 15 do not work. In this case, the first chamber 17 transmits the vacuum from the opening 10. After overcoming the action of the spring 28, the rod 34 and the locking element 35 raise the valve and the valve opens completely. In this case, the highest degree of exhaust gas recirculation is achieved.
    The solenoid valves 14 and 15 are supplied with electrical signals from sensors detecting the water temperature of the engine, the speed of the car, the position of the change in the 1st gear change, etc. In these cases, the first and second pressure control chambers 17 and 19 communicate with atmospheric air and recirculation does not occur.
    权利要求:
    Claims (2)
    [1]
    FIG. Figure 3 shows the depression characteristics of the distribution valve as a function of the degree of opening of the carburetor throttle valve. As follows from the graph, at the moment when the throttle valve is opened, first a vacuum is formed in the hole closest to the axis of the throttle valve, and then in the far hole. In this case, the negative pressure in the next hole is less than or equal to the negative pressure in the near hole. FIG. Figure 4 shows a graph of the change in the amount of recycled exhaust gas in the latter case, when the recycled gas is supplied over the carburetor throttle valve. The dotted line shows the ideal characteristic of the amount of recirculating gas. Claims of the invention A recirculation device for the exhaust grooves of an internal combustion engine with a control valve, located in the recirculation channel connecting the inlet and exhaust pipes, and equipped with first and second diaphragms rigidly connected to each other through a spacer and with a stem supporting a shut-off element of the valve, and a tension spring to hold the shut-off element in the recirculating
    Z /
    Fig. 1, wherein the first diaphragm divides the valve cavity into two pressure control chambers located one above the other, and the second diaphragm separates the third chamber in communication with the atmosphere, while the area of the second diaphragm is larger than the first, and one of the pressure control chambers is connected by a vacuum pipeline with a hole in the intake manifold of the engine located over the throttle valve at its position corresponding to the idling of the engine, characterized in that, in order to reduce the toxicity of the exhaust gas bypass control speed according to the degree of opening of the throttle vpusknay conduit provided with a further opening located above the first and associated with another pressure adjusting chamber via a further vacuum line. j Sources of information taken into account in the examination of 1 US Patent 3877452, cl. 1231119, published. 04.15.75.
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU876067A3|1981-10-23|Device for recirculation of exhaust gases
    US4248047A|1981-02-03|Exhaust bypass valve assembly for an exhaust gas turbo-supercharger
    GB2078856A|1982-01-13|Turbocharger control system for use in internal combustion engines
    US4041913A|1977-08-16|Exhaust gas recirculating system
    US4192278A|1980-03-11|Internal combustion engine for motor vehicle
    US3970061A|1976-07-20|Control system for exhaust gas recirculating valve
    US3648672A|1972-03-14|Device for purifying the exhaust gas of an internal combustion engine to reduce the nitrogen oxide content
    US4310141A|1982-01-12|Vacuum operated valve mechanism
    CA1073290A|1980-03-11|Engine exhaust gas recirculation control system
    US4128089A|1978-12-05|Exhaust gas recirculation apparatus for an internal combustion engine
    US3978831A|1976-09-07|Control device for a vacuum advancer
    US4094284A|1978-06-13|Emission control system
    US4142491A|1979-03-06|Exhaust gas recirculation apparatus for an internal combustion engine
    US4170971A|1979-10-16|Pneumatic pressure control valve assembly
    US4313415A|1982-02-02|Exhaust gas recirculation system in compression-ignition internal combustion engine
    GB1442509A|1976-07-14|Engine exhaust gas recirculating system
    GB1475349A|1977-06-01|Exhaust gas recirculation system of an internal combustionengine
    US4373335A|1983-02-15|Supercharge system of an internal combustion engine
    US4202524A|1980-05-13|Valve positioner and method of making the same
    US4163434A|1979-08-07|Air-fuel ratio regulator for internal combustion engine
    US4087964A|1978-05-09|System for introducing secondary air into an internal combustion engine
    US4450806A|1984-05-29|Intake air throttle device of a diesel engine
    US4354465A|1982-10-19|Diesel throttle valve control system
    US3999737A|1976-12-28|Flow control valve for exhaust gas purifying system
    US4144856A|1979-03-20|Exhaust gas recirculation system
    同族专利:
    公开号 | 公开日
    DE2549959C3|1981-01-22|
    US4066056A|1978-01-03|
    DE2549959A1|1977-01-27|
    JPS529719A|1977-01-25|
    DE2549959B2|1980-05-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2604973C2|2010-09-09|2016-12-20|ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи|Method of actuation of supercharged engineand engine system|GB1360177A|1971-12-25|1974-07-17|Nissan Motor|Exhaust gas recirculation system for an internal combustion engine|
    US3884200A|1971-08-03|1975-05-20|Ranco Inc|Exhaust gas recirculation control system for internal combustion engines|
    US3756210A|1972-04-10|1973-09-04|Gen Motors Corp|Exhaust gas recirculation control valve|
    US3800765A|1972-11-17|1974-04-02|Gen Motors Corp|Exhaust gas recirculation valve|
    JPS5060627A|1973-10-02|1975-05-24|JPS5534306B2|1976-04-05|1980-09-05|
    JPS5734458B2|1976-08-05|1982-07-23|
    JPS5515629B2|1976-10-04|1980-04-24|
    JPS5653097B2|1976-12-27|1981-12-16|
    JPS5813744B2|1977-05-26|1983-03-15|Nippon Jidosha Buhin Sogo Kenkyusho Kk|
    JPS5743087Y2|1977-06-27|1982-09-22|
    US4202524A|1978-05-22|1980-05-13|Robertshaw Controls Company|Valve positioner and method of making the same|
    US4497335A|1979-12-21|1985-02-05|Toyota Jidosha Kogyo Kabushiki Kaisha|Control valve of exhaust gas recirculation apparatus|
    US4463741A|1981-10-30|1984-08-07|Toyota Jidosha Kabushiki Kaisha|Electronically controlled exhaust gas recirculation apparatus|
    DE3931812C1|1989-09-23|1990-05-10|Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De|
    DE3935093C2|1989-10-21|1991-09-26|Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De|
    DE19649152C1|1996-11-27|1998-07-02|Daimler Benz Ag|Device for controlling an exhaust valve in turbo engines|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP50085762A|JPS529719A|1975-07-15|1975-07-15|Exhast gas recycling device|
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