• 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:
    The ratio of fuel to air of the air-fuel mixture being applied to internal combustion engines is adjusted such that it is below the stoichiometric value; the composition of the exhaust gases from the internal combustion engine is then sensed before they are discharged in the atmosphere, and additional air is introduced to the exhaust gases before their liberation so that a predetermined optimal relationship with respect to the stoichiometric value is obtained.
    公开号:SU826971A3
    申请号:SU731900046
    申请日:1973-03-30
    公开日:1981-04-30
    发明作者:Шоль Фридрих
    申请人:Роберт Бош Гмбх (Фирма)；
    IPC主号:
    专利说明:

    one
    This invention relates to engines with means for deactivating exhaust gases.
    A known method of reducing the toxicity of exhaust gases of an internal combustion engine with forced ignition is by introducing a fuel-air mixture into the engine, burning it in cylinders and subsequent oxidation of the products of incomplete combustion in a thermal or catalytic reactor with secondary air jij.
    A device for reducing the toxicity of exhaust gases of an internal combustion engine with forced ignition is known, which contains a thermal or catalytic reactor installed in the exhaust gas line and an engine-driven air pump connected to the reactor through a pipeline equipped with a valve for supplying raw air M .
    However, the indicated method and device for precise adjustment. air / fuel mixtures require high technical costs in order to achieve lower emissions
    toxic substances with exhaust gases, as a result of which a degree of reduction in the toxicity of exhaust gases is not always achieved.
    The purpose of the invention is to reduce exhaust emissions by controlling the amount of secondary air supplied to the reactor.
    0
    This goal is achieved by supplying an enriched fuel-air mixture coi-il to the engine, and depending on the concentration of oxygen in the exhaust gases, adjust the supply of secondary air to the reactor until it reaches
    ,
    The composition of the fuel-air mixture supplied to the engine is regulated depending on the oxygen concentration in the exhaust gases.
    In the device, the exhaust gas line is provided with a measuring oxygen probe, and the valve is controlled and connected to the probe through an amplifier.
    The drawing shows a diagram of an apparatus for reducing exhaust emissions.
    The device comprises an engine 1, equipped with a fuel tank 2, a drilling device 3 and a thermal or catalytic reactor 4 ,. installed in the exhaust line. A measuring oxygen probe 5 is located behind the catalytic reactor 4 in the exhaust line. The measuring probe is connected to the control valve b via an amplifier 7. The control valve of the battery is placed in line 8, which communicates the secondary air pump 9 with the reactor 4.
    The device for implementing the method of reducing the toxicity of exhaust gases works as follows
    Engine 1 is supplied with an air-fuel mixture, whereby air is sucked in freely and mixed with fuel coming from tank 2 using metering device 3. Exhaust gas from engine 1 is passed through reactor 4. According to the composition of the exhaust gases leaving the reactor, an oxygen probe sends, through amplifier 7, a signal to a controllable valve, by means of which the supply of secondary air to the engine exhaust line is regulated and sets such a quantity in order to maintain the required value " . The air entering through line 8 is supplied by a pump 9, which is driven by engine 1, since the required amount of secondary air is proportional to the speed and power of the engine.
    Controlling the amount of secondary air supplied to a thermal or catalytic reactor, allows obtaining sufficiently accurate values to a predetermined value of the composition of gas B for the reactor to obtain the best results in reducing exhaust emissions.
    权利要求:
    Claims (3)
    [1]
    1. A method of reducing the toxicity of exhaust gases of an internal combustion engine with forced combustion by supplying a fuel-air mixture to the engine, burning it in cylinders and subsequent oxidation of products of incomplete combustion in a thermal or catalytic reactor with a secondary air supply to them, characterized in that In order to reduce the toxicity of exhaust gases, an enriched fuel-air mixture is supplied to the engine, and depending on the oxygen concentration in the exhaust gases, they regulate the supply secondary air into the reactor until it reaches about 1.
    [2]
    2. A method according to claim 1, characterized in that the composition of the fuel-air mixture supplied to the engine is controlled depending on the oxygen concentration in the exhaust gases.
    [3]
    3. A device for reducing exhaust gases toxicity of an internal combustion engine with forced ignition containing a thermal or catalytic reactor installed in the exhaust gas line and an air driven pump from the engine connected to the reactor through a pipeline fitted with a valve for supplying secondary air, characterized in that, in order to regulate the amount of secondary air supplied to the reactor, the exhaust gas line is provided with measuring oxygen probe and the valve is controllable and is connected to the probe through the amplifier.
    Sources of information taken into account in the examination
    1. US patent No. 3611715, cl. 60-30, published. 1971.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU826971A3|1981-04-30|Method and device for reducing toxicity of spent gases of internal combustion engine with forced ignition
    WO1999067508B1|2000-02-10|Method and apparatus for reducing particulates and nox emissions from diesel engines utilizing oxygen enriched combustion air
    GB1490746A|1977-11-02|Method of and a system for reducing the quantities of noxious gases emitted into the atmosphere from an internal combustion engine
    GB1515734A|1978-06-28|Apparatus for controlling the ratio of air to fuel of air-fuel mixture of internal combustion engine
    GB1489704A|1977-10-26|Hydrogen-rich gas generator
    GB1385621A|1975-02-26|Exhaust gas after burning system for internal combustion engine
    GB1484766A|1977-09-08|Air-fuel mixture control apparatus for carburetted internal combustion engines
    GB1398252A|1975-06-18|Internal combustion engines
    GB1457420A|1976-12-01|Internal combustion engine
    SU712040A3|1980-02-05|Method of internal combustion engine fuel supply
    US5341299A|1994-08-23|Gas motor control
    SE7511937L|1976-04-26|DEVICE FOR REGULATING THE COMPOSITION OF GASES FOR AN COMBUSTION ENGINE
    JPS5248738A|1977-04-19|Method and apparatus for control of proportion of mass of fuel air mixture supplied to internal combustion engine
    JPS5735136A|1982-02-25|Secondary-air supply instrument of air/fuel ratio control equipment for an internal combustion engine
    GB1512445A|1978-06-01|Intake and exhaust apparatus for precombustion chamber internal combustion engines
    JPS63314450A|1988-12-22|Oxygen sensor evaluator
    GB1529628A|1978-10-25|Fuel supply device for internal combustion engines
    JPH04124439A|1992-04-24|Air fuel ratio control method for internal combustion engine
    SE8002210L|1980-09-23|COMBUSTION ENGINE GAS GASES
    JPS5677534A|1981-06-25|Altitude compensating device for internal combustion engine
    CA1124597A|1982-06-01|Engine system
    ES447088A1|1977-07-01|Intake apparatus for internal combustion engine
    GB1377908A|1974-12-18|Internal combustion engines
    FR2233500A1|1975-01-10|Richness control system for carburettor - has air passage through fuel control screw adjustable by needle
    GB1423641A|1976-02-04|Apparatus for reducing the proportion of harmful substances in the exhaust gases of an internal combustion engine
    同族专利:
    公开号 | 公开日
    AT323474B|1975-07-10|
    NL7304375A|1973-10-02|
    DE2215533B2|1979-03-29|
    CS160623B2|1975-03-28|
    JPS554208B2|1980-01-29|
    ZA731812B|1973-12-19|
    BE797541A|1973-07-16|
    PL85218B1|1976-04-30|
    CA1004029A|1977-01-25|
    TR18184A|1978-02-26|
    GB1429664A|1976-03-24|
    ES413136A1|1976-01-16|
    DE2215533C3|1979-11-22|
    JPS4913515A|1974-02-06|
    IT981752B|1974-10-10|
    DE2215533A1|1973-10-11|
    CH557951A|1975-01-15|
    AR205878A1|1976-06-15|
    FR2178606A5|1973-11-09|
    US3832848A|1974-09-03|
    BR7302172D0|1974-06-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4120891A1|1991-06-25|1993-01-07|Bayerische Motoren Werke Ag|Combustion engine pumping fresh air into exhaust system - is checked for correct exhaust treatment function by direct or indirect measurement of pump power consumption|US2244669A|1936-08-01|1941-06-10|Askania Werke Ag|Control device for the fuel feed of internal combustion engines|
    US3032969A|1961-08-28|1962-05-08|Llewellyn T Barnes|Venturi degassing attachment|
    AT257213B|1963-09-12|1967-09-25|Bosch Gmbh Robert|Measuring head for electrical measuring devices for determining the unburned exhaust gas components from internal combustion engines|
    US3406515A|1964-01-02|1968-10-22|Texaco Inc|Internal combustion engine system for exhaust emissions control|
    US3464801A|1964-09-28|1969-09-02|Tenex Corp The|Catalytic system for inert gas generation|
    US3441381A|1965-06-22|1969-04-29|Engelhard Ind Inc|Apparatus for purifying exhaust gases of an internal combustion engine|
    US3738341A|1969-03-22|1973-06-12|Philips Corp|Device for controlling the air-fuel ratio {80 {11 in a combustion engine|
    US3616274A|1969-11-24|1971-10-26|Gen Motors Corp|Method and apparatus for monitoring exhaust gas|
    US3683625A|1970-05-25|1972-08-15|Edward J Mccrink|Smog reducer|
    US3730157A|1970-05-25|1973-05-01|Universal Oil Prod Co|Carburetor control system and method for regulating air to fuel ratio|
    US3696618A|1971-04-19|1972-10-10|Universal Oil Prod Co|Control system for an engine system|
    US3768259A|1971-07-06|1973-10-30|Universal Oil Prod Co|Control for an engine system|DE2235852B2|1972-07-21|1975-10-30|Deutsche Vergaser Gmbh & Co Kg, 4040 Neuss|Control device for dimensioning additional air for the exhaust gas afterburner of an internal combustion engine|
    DE2326718C2|1973-05-25|1975-08-28|Deutsche Vergaser Gmbh & Co Kg, 4040 Neuss|Control device for metering an additional amount of air to improve combustion in internal combustion engines or post-combustion of exhaust gases from internal combustion engines|
    DE2333072A1|1973-06-29|1975-01-16|Bosch Gmbh Robert|METHOD OF DETOXING THE EXHAUST GAS|
    DE2401417C2|1974-01-12|1981-10-01|Robert Bosch Gmbh, 7000 Stuttgart|Process for detoxifying the exhaust gases of an internal combustion engine|
    FR2260751B1|1974-02-08|1976-06-25|Peugeot & Renault|
    US3927524A|1974-02-22|1975-12-23|Garrett Corp|Engine exhaust reactor air flow ratio control method and apparatus|
    DE2422938C2|1974-05-11|1982-07-08|Robert Bosch Gmbh, 7000 Stuttgart|Switching device for the controlled addition of additional air to the exhaust gas of an internal combustion engine|
    JPS5166934A|1974-12-06|1976-06-10|Nissan Motor|Nainenkikanno kunenhiseigyosochi|
    JPS51123428A|1975-04-21|1976-10-28|Nissan Motor Co Ltd|Exhaust gas purifier|
    US3986352A|1975-05-08|1976-10-19|General Motors Corporation|Closed loop fuel control using air injection in open loop modes|
    JPS52106720U|1976-02-10|1977-08-13|
    JPS52139820A|1976-05-18|1977-11-22|Toyota Motor Corp|Exhaust gas purifier for internal combustion engine|
    JPS5319616U|1976-07-30|1978-02-20|
    JPS5392031A|1977-01-21|1978-08-12|Nissan Motor Co Ltd|Sulphate inhibiting device for internal combustion engine|
    SE416760B|1977-08-23|1981-02-02|Volvo Ab|SET FOR DETERMINATION OR CONTROL OF THE PROPERTIES OF A CATALYST AND AND OR THE PROCEDURE OF THE CATALYST RESPONSE|
    JPS566053A|1979-06-27|1981-01-22|Hitachi Ltd|Air fuel ratio controller used for engine with reactor|
    JPS5698542A|1980-01-08|1981-08-08|Toyota Motor Corp|Air-fuel ratio controlling system for engine|
    JPS56118536A|1980-02-22|1981-09-17|Toyota Motor Corp|Air fuel ratio controller for engine|
    DE3832790C2|1988-09-27|1997-12-11|Pattas Konstantin N|Method and device for regenerating a soot filter|
    KR950012137B1|1989-02-02|1995-10-14|닛뽄 쇼크바이 카가꾸 고오교오 가부시기가이샤|Method of removing nitrogen oxides in exhaust gases from a diesel engine|
    DE3926516A1|1989-08-10|1991-02-14|Oberland Mangold Gmbh|CONTROL CIRCUIT FOR INFLUENCING THE EXHAUST GAS COMPOSITION OF AN INTERNAL COMBUSTION ENGINE|
    CA2026300C|1989-10-23|1996-07-16|Monika Engel-Bader|Catalyst system for producing polyethylene terephthalate from a lower dialkyl ester of a dicarboxylic acid and a glycol|
    JP2601072B2|1991-09-20|1997-04-16|株式会社日立製作所|Internal combustion engine, operating method thereof, and automobile|
    DE4225361A1|1992-07-31|1994-02-03|Audi Ag|Functional testing of secondary air admission into IC engine exhaust - involves measuring lambda value of exhaust gases by sensor supplying electronic control unit for secondary air pump and valve|
    US5822976A|1995-04-05|1998-10-20|Ford Global Technologies, Inc.|Method and system for controlling the amount of secondary air introduced into an internal combustion engine|
    DE10329522B4|2003-06-30|2006-02-16|Daimlerchrysler Ag|Method for determining the amount of a secondary air injection|
    DE102007008577B3|2007-02-16|2008-10-23|Audi Ag|Method and device for generating ammonia for the exhaust gas treatment in internal combustion engines in a motor vehicle|
    DE102011117736A1|2011-11-07|2013-05-08|Honeywell Technologies Sarl|Method for operating a gas burner|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2215533A|DE2215533C3|1972-03-30|1972-03-30|Device for reducing the harmful components in the exhaust gases of an internal combustion engine|
    [返回顶部]