• 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:
    Lean air/fuel mixture is supplied to the induction manifold of an Otto cycle engine through a heat exchanger heated by engine exhaust gases under normal running conditions, and under idling conditions mixture is supplied to an auxiliary induction manifold solely through an auxiliary duct. The auxiliary duct is wound with an electrical resistive heating element to preheat the mixture upon cold-starting of the engine for a time, typically 30-40 seconds, determined by a timer switch.
    公开号:SU969175A3
    申请号:SU782625356
    申请日:1978-06-08
    公开日:1982-10-23
    发明作者:Ломбарди Клаудио；Беллетти Лоренцо
    申请人:Фиат Сочиета Пер Ациони (Фирма)；
    IPC主号:
    专利说明:

    t5 POWER SUPPLY SYSTEM FOR INTERNAL ENGINE
    one
    The invention relates to mechanical engineering, in particular, to power systems for an internal combustion engine.
    The power supply systems for an internal combustion engine are known, comprising a carburetor having a throttle valve and mounted on an intake manifold provided with inlets for connecting to engine cylinders and a heat exchanger with inlet and outlet pipes for exhaust gases and an additional inlet connected to the inlet manifold for the carburetor relative to the flow of the mixture and having a fuel line equipped with an electric heater, made in the form of a spiral, approx. fuel supply line, and connected through a switching device with a switch-on time control device to the power source with CO
    However, in such power systems, when a cold engine starts to burn out
    it is possible that fuel droplets settle on the walls of the inlet pipe due to the low temperature of the latter, which causes deterioration of the conditions for 5 combustion of the fuel-air mixture, and the exhaust gases of the engine have high toxicity.
    The aim of the invention is to reduce the toxicity of exhaust gases ..
    10 The goal is achieved
    by the fact that in the power supply system for internal combustion engine engines containing a carburetor, having a throttle valve and mounted on an intake pipe provided with inlet pipes for connection to engine cylinders and a heat exchanger with exhaust and inlet pipelines, and
    30 additional inlet channel connected to the inlet pipe behind the carburetor relative to the flow of the mixture and having a fuel line equipped with an electric heater,
     made in the form of a spiral surrounding the fuel line and connected through a switching device with a switching time setting to the current power source, the additional inlet channel is made with a distribution capacitance located in the zone of the inlet pipes and connected to each of the latter with separate channels. Moreover, the inlet pipe in the area between the carburetor and the heat exchanger is equipped with an additional pipe connected to the fuel line and an auxiliary throttle valve located behind the additional pipe with respect to the mixture flow and connected to the carburetor throttle valve with the possibility of installing an auxiliary (throttle) dampers in the closed position when the carburetor throttle valve is set to the idling position. In addition, the heat exchanger is equipped with a bypass line connecting the inlet and outlet pipes and a distribution device, both of which control the flow of exhaust gases through the inlet and bypass pipes and have a control device that is sensitive to the temperature of the mixture in the inlet pipe and the additional in the storage channel. Moreover, the control device contains a pneumatic actuator, the working chamber of which is connected to the inlet duct by means of the first control channel of the thermostatic valve element, which reacts to the temperature of the mixture in the inlet pipe, and the atmosphere and the additional inlet channel with a thermostatic distribution valve, a pan that reacts to temperature cm si in the additional inlet channel. FIG. 1. schematically depicts the proposed power supply system for internal combustion engines; in fig. 2 - on an enlarged scale thermostatic control valve; in fig. 3 shows an embodiment of a part of the power supply system. The power supply system for the internal combustion engine contains a carburetor 1, have (throttle valve 2) and installed on the inlet pipe 3i equipped with inlet pipes k for connection to the engine cylinders (not shown) and heat exchanger 5 with inlet and outlet pipes 6 and 7 for the exhausted gases, and an additional inlet channel having a fuel line 8, equipped with an electric heater, made in the form of a spiral E, surrounding the fuel line 8, and connected through a switching device 10 to the source The power supply unit 11 of this unit. The carburetor 1 has a main mixing chamber 12 connected to the inlet pipe 3. and an additional mixing chamber 13 connected to the fuel line 8 and having an additional throttle valve I. The heat exchanger 5 has tubes 15 for the passage of exhaust gases and transverse baffles 16 for the fuel-air mixture The inlet pipe 3 behind the heat exchanger 5 with respect to the mixture flow is provided with a distributor 17 to which inlet pipes are connected. Additional vpus.kny channel is made with a distribution tank 18 connected to the output of the fuel line 8 and located in the zone of the inlet nozzles. The distribution tank 18 is connected to each of the inlet pipes L using separate channels 19, each of which is provided with a heating coil 20 connected to the current source 11. The inlet and outlet pipes 6 and 7 of the heat exchanger 5 communicate with each other by means of a bypass pipe 21, at the outlet of which a plate 22 of the distributor is connected via a lever 23 and 2 to the membrane 25 of the pneumatic actuator 26, the working chamber 27 of which is connected at using the first control channel .28 to the distributor 17 of the intake manifold 3 and with the help of the second control channel 29 to the distribution tank 18 and to the atmosphere. The membrane 25 is loaded with a spring 30. At the inlet 31 to the first control channel 28, a shut-off member 32 of a thermostatic valve element is installed, made in the form of a bimetallic plate 33 fixed to the wall of the distributor 17. At the entrance to the second control channel 29 there is a thermostatic distribution valve 3 which (Fig. 2) contains a hollow body 35 fixed on a plate, 3b, which serves for fastening the outer side of the distribution tank 18. The body 35 has a chamber 37 connected by means of radial holes 38 with the atmosphere and through an axial conical channel 39 with a cavity 40 of the cover 41 connected to the second control channel 29. In the axial channel there is a shut-off member 2 equipped with a spring 43 and having a 44j end 44 of which is located in a cylinder 46 filled with a substance 47 having a high thermal expansion coefficient, e.g. wax. A canister 46 protrudes inside the distribution tank 18. The switching device takes a long time (not shown) and is equipped with a button 4B for switching on manually. The main and additional throttle valves 2 and 14 are interconnected by means of a lever system (not shown) so that the additional throttle valve 14 is in the idle start position when the main throttle valve 2. is closed. The system works as follows. : Before starting the idle motor, the button 48 is manually pressed, so that the spirals 9 and 20 are connected to the current source 11. At the same time, the selective valve Z is closed, and additional throttle valve 14 is at idle speed. Spirals 9 and 20 heat the fuel wire 8 and individual channels 19. In connection with this, during the start of the engine, the top engine is air-mixed, prepared by the system and entering In Qi, the engine's cylinders from the additional mixing chamber 13 through the fuel wire 8, the distribution tank 18 and the individual channels 19 are heated before it enters the inlet nozzles 4, so that it provides with a reliable engine nytK and This is a lean air-fuel mixture. 30-40 seconds after the start of the engine start, the setpoint adjuster of the switching device 10 disconnected the power cables 9 and 20 from the power source. When heated on the accelerator pedal 9 5 jaaTopa 1 is not shown) throttle valve 2 opens, so that the fuel-air mixture from the main mixing chamber through the inlet pipe 3, its heat exchanger 5, the distributor 17 is directed to the inlet pipes 4 and further to the engine cylinders. During the start-up of the cold engine, the locking member 42 is in the position of closing the axial cone channel 39. Therefore, the depression in the distributor 17 is transmitted through the first control channel 28 to the working chamber 27 of the pneumatic actuator 2b, so that the diaphragm 25 rises up and through 24 and the lever 23 sets the plate 22 to the closing position of the bypass pipe 21. The exhausted gases from the engine cylinders flow through the supply pipe to the heat exchanger 5 and pass through the pipes 15 to the exhaust pipe 7. the mixture passing through the inlet pipe 3, the passage through the heat exchanger 5, is heated by the heat of the exhaust gases and then goes to the distributor 17. 8 as a result of this, the bimetallic plate 33 is heated, which deforms the locking member 3, to block the entrance of the first control channel 28 to full shut down As a result, the vacuum in the working chamber 27 drops depending on the degree of heating of the fuel-air mixture passing through the inlet pipe 3. The fall dilutes the downward movement of the membrane 25 under the action of the spring 30, so that the plate 22 is set to the open position of the bypass pipe 21 in therefore, part of the OTP of boiling gases from the engine, mine heat exchanger 5, is sent directly to the exhaust line 7. .. Fuel-air mixture, pos. blunt through the additional inlet channel, and the fuel-air mixture heated in the heat exchanger 5 is mixed in the inlet pipes 4, so that the mixture goes to the engine cylinders, the temperature of which is optimal and ensures high technical and economic performance of the engine, exhaust gases which have low toxicity.
    . During engine operation at idle speed after cold start, i.e., when helixes 9 and 20 provide heating of the mixture passing through the additional enycKHOf v channel /, the cylinder is heated when substance reaches the specified temperature i expands and through the end kS and the rod 44 moves the locking member 42 to the open axial taper position. channel 39, in connection with which, through the radial holes 38, the chamber 37, the axial cone channel 39, the cavity 40 and the second control channel 29, the working chambers of the pneumatic actuator 26 communicate with the atmosphere. This causes a further displacement of the membrane 25 downwards, so that the plate 25 completely opens the bypass pipe 21 and stops the flow of exhaust gases through the heat exchanger 5. Thus, the degree of heating of the air-fuel mixture entering the engine is adjusted.
    In the embodiment of a part of the system (Fig. 3), the inlet pipe 3 in the zone between the carburetor 1 and the heat exchanger 5 is provided with an additional pipe 49 connected to the fuel pipe 8 of the additional inlet duct and an auxiliary throttle valve 50 located behind the additional pipe 49 relative to flow of the mixture and associated with the throttle valve 2 of the carburetor 1 by means of a leverage system formed by drive levers 51 and 52 and a lower 53. The carburetor 1 is made only with the main mixing chamber 12, and the snarl system s installs the auxiliary throttle valve 50 to a position zak4 ryti when the throttle valve of the carburettor 1, 2 is in the idle position.
    The system (Fig. 3) works as follows.
    When the throttle valve 2 of the carburetor 1 is in the idle position, the auxiliary throttle valve 50 is closed. Therefore, the fuel-air mixture coming from the main mixing chamber 12 is guided through an additional pipe 49 to the fuel line 8 and further to the engine cylinders, as described above. The throttle valve 2 opens, the auxiliary throttle valve 50 opens the flow area of the intake manifold 3, and the fuel-air mixture flows to the cylinders as if
    .in the inlet pipe 3 and on. additional intake duct. Otherwise, the operation of the system according to FIG. 3 is similar to the operation of the system of FIGS. 1 and 2, as described above.
    Thus, such an implementation of the power supply system ensures that the air-to-air mixture reaches the optimum temperature, and therefore the toxicity of the spent fuel is reduced.
    gases.
     . Formula. the invention
    权利要求:
    Claims (3)
    [1]
    1, A power supply system for an internal combustion engine, comprising a carburetor, having a throttle valve and mounted on an intake manifold provided with inlet manifolds for connection to engine cylinders and a heat exchanger with inlet and exhaust ducts for exhaust gases, and an additional inlet connected to the inlet manifold the pipe behind the carbopatopome with respect to the mixture flow and having a fuel line equipped with an electric heater made in the form of a spiral surrounding the fuel line, and connected through a switching device with a switching time setting to a power source with a current, characterized in that, in order to reduce the toxicity of gas that has been operated, the additional inlet channel is made with a distribution capacity, located in the zone of the inlet pipes and connected to each of the latter by individual channels.
    [2]
    2. The system of Claim 1, clause 7 and 7, with the fact that the inlet pipe in the area between the carburetor and the heat exchanger is equipped with an additional pipe connected to the fuel line and an auxiliary throttle valve located behind the additional pipe relative to the flow mixture and associated with the throttle valve of the carburetor using a system of levers, made with the possibility of installation. Auxiliary throttle valve in the closed position when installing the throttle 9. 9 saline damper-: car6yurator in the idle position.
    [3]
    3. The system of PP. 1 and 2, of which the heat exchanger is equipped with a bypass pipe line connecting the inlet and outlet pipes, and a switchgear that controls the flow of exhaust gases through the inlet and bypass pipelines and has a control a device that is sensitive to the temperature of the mixture in the intake manifold and the auxiliary intake duct .. k. A system according to claim 3, characterized in that the control device comprises a pneumatic actuator whose working chamber is connected to the inlet pipeline 510 via a first control channel with a thermostatic valve element responsive to the temperature of the mixture in the intake manifold and to the atmosphere and an additional inlet channel with the help of a second control channel with a thermostatic distributor valve, which reacts to the temperature of the mixture in the additional inlet channel. First and foremost:. , 09.06.77 on PP 1.3 and 4 03.30.78 on item 2. Sources of information,. taken into account in the examination 1. US patent number 3789817, cl. 123-133, pub. 197.
    类似技术:
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    US1325999A|1919-12-23|schmid and l
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    同族专利:
    公开号 | 公开日
    GB1588479A|1981-04-23|
    FR2393944A1|1979-01-05|
    JPS545125A|1979-01-16|
    FR2393944B1|1982-08-13|
    DE2823565A1|1978-12-14|
    DE7816169U1|1980-05-29|
    US4194476A|1980-03-25|
    引用文献:
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    RU2451806C2|2006-12-05|2012-05-27|Николай Кудрин|Method of operating ice with ignition plug|
    RU2464499C2|2010-11-25|2012-10-20|Владимир Львович Якимов|Water heating system|US3139874A|1963-05-16|1964-07-07|Acf Ind Inc|Carburetor|
    US3282261A|1964-11-02|1966-11-01|Ethyl Corp|Gasoline engines|
    FR1481528A|1966-05-27|1967-05-19|Zenith Carburetter Company Ltd|Device for improving the transfer of the mixture between a carburetor and the combustion chamber of internal combustion engines using volatile fuels|
    US3543736A|1967-11-18|1970-12-01|Toyoda Chuo Kenkyusho Kk|Internal combustion engine with subcombustion chamber|
    US3554174A|1969-07-07|1971-01-12|Dynatech Corp|Dual circuit induction system|
    US3890945A|1973-03-19|1975-06-24|Toyota Motor Co Ltd|Exhaust gas cleaning system for internal combustion engines|
    US4151820A|1977-10-20|1979-05-01|Istvan Furacz|Carburetion system for internal combustion motor|DE2949041C2|1979-12-06|1982-01-28|Bosch und Pierburg System oHG, 4040 Neuss|Heating for mixture preparation with mixture formers|
    US4372261A|1980-10-14|1983-02-08|Chrysler Corporation|Pre-start engine heat system|
    US4330492A|1980-11-03|1982-05-18|Mohr Russell R|Carburetor|
    SE450721B|1984-06-12|1987-07-20|Volvo Ab|VALVE DEVICE FOR DISTRIBUTION OF PREHEATED RESPECTIVE NON-PREHEATED INTAKE AIR TO AN COMBUSTION ENGINE|
    US4883616A|1984-08-13|1989-11-28|Covey Jr Ray M|Vaporizer/carburetor and method|
    GB8516939D0|1985-07-04|1985-08-07|Keewest Dev Ltd|Fuel system for i c engine|
    DE3917107C2|1989-05-26|1991-04-11|Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De|
    US4930484A|1989-10-26|1990-06-05|Binkley Steven M|Fuel and air mixture expanding and preheating system|
    DE3940392A1|1989-12-06|1991-06-13|Bayerische Motoren Werke Ag|Air inlet system for combustion engine - has sensor measuring temp. of inlet air to regulate heating thus reduce air leakage due to loss of sealing|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT6833677A|IT1083417B|1977-06-09|1977-06-09|IC engine with heated suction system - has auxiliary suction manifold with electric heating for low loading running|
    IT6770278A|IT1156938B|1978-03-30|1978-03-30|IC engine with heated suction system - has auxiliary suction manifold with electric heating for low loading running|
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