• 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:
    I. A method of operating an internal combustion engine with compression ignition by injecting air into the cylinder through the inlet duct and valve, sending rotational motion to the air, compressing it with a piston and injecting various types of fuel into the compressed air flow rotating in the combustion chamber through the first nozzle they inject the auxiliary flammable fuel, mainly gas oil, with its subsequent ignition from contact with compressed air, and through the second nozzle it is the main Fueled oxygen-containing fuel, mainly methanol, followed by combustion from burning auxiliary toppiva, burning, burning of combustion products and exhausting gases from the cylinder, a different gene that, in order to decrease the toxicity of exhaust gases, the main fuel is injected in the center of the firing chamber. -. neither in the direction of the wall of the recess in the bottom of the piston and the duration of the injection of both types of fuel is installed with overlap. 2. A method according to claim I, characterized in that the injection of the main fuel begins after the expiration of two thirds of the duration of the injection of the auxiliary. 3. Method according to paragraphs. J, 2, which is related to the fact that when the engine load changes, the amount of injected main CO fuel is changed, and the amount of auxiliary fuel is kept constant. 4. Method pop. 1.2, characterized in that when the engine load changes, the amount of both fuels injected varies. 5. Method according to paragraphs. 1-4, which means that during cold start of the engine, auxiliary fuel is injected only until the engine reaches idle speed. 6. Method according to claim 1-5, characterized in that at full engine load the volume ratio of the auxiliary fuel and the main fuel is maintained at 1:30. 7. Method according to paragraphs. 1-6, about t l and using the fact that alcohols - methanol or ethanol with contamination up to 30 vol.E. are used as the axle fuel. 8. Method according to paragraphs. 1-6, of which it is
    公开号:SU1116981A3
    申请号:SU802869403
    申请日:1980-01-11
    公开日:1984-09-30
    发明作者:Финстервальдер Герхард；Зафтиг Якоб
    申请人:Клекнер-Хумбольдт-Дойтц Аг (Фирма)；
    IPC主号:
    专利说明:

    Auxiliary fuels are used with a fuel that is supplemented with accelerated acceleration ignition.
    9, A compression ignition engine containing at least one cylinder with a piston placed in it, a cylinder head, a combustion chamber formed by the cylinder head and the bottom of the piston, means for communicating rotary motion to the air in the combustion chamber and. Two fuel injectors installed in the cylinder head, each of which is made with at least one nebulizer bbbiM hole, the first nozzle being used for the injection of auxiliary flammable fuel j, mainly gas oil,
    with the first fuel pump, and the second nozzle for the injection of the main flame retardant emog of oxygen-containing fuels, and mainly methanol, with the help of the second fuel pump, so that, in order to reduce the toxicity of spent gases, in the bottom of the piston there is a recess, the second nozzle is placed in the center of the combustion chamber and the axes of its spray holes are directed to the wall of the recess.
    10, the engine according to claim 9, characterized in that the first nozzle is made with one hole and is located in the peripheral region of the combustion chamber, and the axis
    its holes are directed into the combustion chamber at an obtuse angle to the normal to the axis of the cylinder.
    981
    1I.Engine by. 9-10, which means that the second nozzle is made with four holes, and the axis of the hole of the first nozzle is directed through the cone formed by the axes of the second nozzle with the tip of the second nozzle.
    12. The engine for PP. 9-11, of t licha. due to the fact that in the peripheral region of the combustion chamber a bevel is made under the first nozzle,
    13. The engine for PP. 9-12, that is, with the fact that the axis of the opening of the first nozzle intersects a parallel to the axis of the cylinder passing through the top of the second nozzle ..
    14. Motor according to claim 9, 9-13, characterized in that the nozzles are installed at different angles to the axis of the cylinder.
    15. The engine according to claim 14, which is based on the fact that the nozzles are fixed by sticking,
    16. The engine for PP. 9-15, which is one of the reasons for the fact that the top-end pumps of both nozzles are equipped with a common injection advance angle mechanism.
    17. The engine of claim 9, which is based on the fact that the nozzles are combined in one nozzle housing.
    18. The motor according to claim 17, wherein the second nozzle is made with four holes and the first is made with two, with the axes of the latter diametrically opposed between the axes of the holes of the second nozzle.
    FIELD OF THE INVENTION The invention relates to mechanical engineering, in particular to engine-building, namely to compression-ignition internal combustion engines and methods of their operation.
    There is a known method of operating an internal combustion engine with compression ignition by injecting air into the cylinder through the inlet duct and valve, giving rotational motion to the air, compressing it with a piston and injecting various types of fuel into the compressed air flow rotating in the combustion chamber through two fuel injectors. The first nozzle is injected with an auxiliary, easily combustible fuel, mainly gas oil, followed by its ignition from contact with compressed air, and through the second nozzle / - the main pipe Ho3 ignited oxygenate TOGO1INO, iipeHNfymecTBeHHo meta} 1OL5 .posleduyuschim its ignition from the burning auxiliary fuel. Combustion, expansion of the product of the e-ry and release from the cylinder of spent 1az ij. A compression-ignition engine is known, comprising at least one cylinder with a piston located therein, a cylinder head, a combustion chamber / formed by the cylinder head and the bottom piston of the means for communicating rotary motion to the air in the combustion chamber and mounted in the cylinder head two fuel injectors, each of which is made with at least one spray port, the first one being designed for the injection of auxiliary readily flammable fuel, preferably gas oil, using the first fuel pump, and the second nozzle - to inject the main flame-resistant oxygen-containing fuel, mainly methanol, using the second fuel pump ij. However, a known engine operating according to a known method is characterized by a higher toxicity of the exhaust gases. The aim of the invention is to reduce the toxicity of exhaust gases. This goal is achieved in that according to the method of operation of an internal combustion engine with compression ignition by injecting air into the cylinder through the inlet duct and valve, letting the air rotate, compress it with a piston and inject various types of fuel into the compressed air rotating in the combustion chamber through two fuel injectors, whereby an auxiliary flame retardant fuel is injected through the first nozzle into the fuel, mainly gas oil, with its subsequent ignition from contact with compressed air, and through the second nozzle - the main flame-retardant oxygen-containing fuel, mainly methanol, followed by its ignition from the burning in. auxiliary fuel, combustion, expansion of the products 8 from the exhaust gas cylinder, the main fuel is injected in the center of the combustion chamber, from the combustion chamber in the center of the combustion chamber. The wall of the recess in the bottom of the piston and the duration of the injection of both types of fuel are installed with overlap. The injection of the main fuel begins after the expiration of two thirds of the duration of the auxiliary injection. When the engine load changes, the amount of main fuel injected is changed, and the amount of auxiliary fuel is kept constant or the amount of both fuels injected is changed. When starting the engine cold, only auxiliary fuel is injected until the engine reaches idling speed. At full engine load, the volume ratio of auxiliary fuel and main fuel is kept equal to 1 t 30. Alcohols are used as the main fuel -. methanol or ethanol contaminated with up to 30 vol.%. As an auxiliary fuel, flame-retardant fuel with the addition of an ignition accelerator is used. This goal is also achieved by the fact that in a compression ignition internal combustion engine containing at least one cylinder with a piston placed in it, a cylinder head, a combustion chamber formed by a cylinder head and the bottom of the piston, means for communicating rotational movement to the air in the combustion chamber and two fuel injectors installed in the cylinder head, each of which is made it has at least one spray hole, the first nozzle is designed to inject an auxiliary flammable fuel, mainly gas oil, using a first fuel pump, and the second nozzle to inject a main flame-resistant oxygen-containing fuel, mainly methanol, using a second fuel pump, at the bottom The hole is recessed, the second nozzle is placed in the center of the combustion chamber and the axis of its spray orifices are directed onto the wall of the recess. The first nozzle of the knife is made with one hole and is located in the peripheral area of the combustion chamber, with the axis of its opening directed into the combustion chamber at an obtuse angle to the normal to the cylinder axis. The second nozzle can be made with four holes, and the holes of the first nozzle are directed through a cone formed by the axes of the holes of the second nozzle with the top of the last nozzle. R the peripheral region of the combustion chamber can be made bevel under the first nozzle. The axis of the opening of the first nozzle can intersect parallel to the axis of the cylinder passing through the top of the second nozzle. The nozzles can be installed at different angles to the axis of the cylinder and fixed with a common clamp. The fuel pumps of both injectors can be equipped with a common injection advance angle mechanism. I The nozzles can be combined in one nozzle housing. The second nozzle can be made with four holes, and the first one with two, with the axes of the latter diametrically opposed between the axes of the holes of the second form, 4g.1 shows the engine for the implementation of the proposed method; in fig. 2 is a view A in FIG. on r. 3 - engine, version f of FIG. 4 - view B on fig.Z. The engine dp of the proposed method comprises at least one cylinder (not shown) with a piston 1 placed in it, a cylinder head 2, a combustion chamber 3 formed by a cylinder head 2 and a bottom, piston 1 and made in the form of a recess in the bottom of the piston 1 for example, in the form of an omega letter, means of air flow in the combustion chamber 3 rotary motion (not shown) and two fuel injectors 4 and 2 installed in the head 2, and preferably a combustion chamber 3 with a narrowing edge dp preventing fuel 6 from entering wipe out of the wall of the cylinder and wash it off with an oil film. The first nozzle 4 is designed to inject an auxiliary readily flammable fuel, mainly gas oil, using a first fuel pump (not shown), is filled in this example with one hole and is located in the perfusion section of the combustion chamber 3, and the axis of its opening is directed into the combustion chamber 3 at an obtuse angle to the normal to the axis of the cylinder. In the periphery region of the combustion chamber 3, a bevel 6 is made under the first nozzle 4, the hole axis of which intersects parallel to the cylinder axis passing through the top of the second nozzle 5. The second nozzle 5 is designed to inject the main flame-resistant oxygen-containing fuel, mostly methanol, with assistance of the second fuel pump (not shown), placed 1 each (the center of the combustion chamber is made in this example with four holes, the axes of its holes are directed to the wall of the cavity, and the axis of the holes of the first force The nipples 4 are directed through a cone formed by the axes of the openings of the second nozzle 5 with a tip near the tracks into the air cavities of the combustion chamber 3 not covered by the axes of the openings of the second nozzle 5. The nozzles 4 and 5 are mounted at different angles to the axis of the cylinder and fixed with a common clamp 7. Fuel pumps (nozzles 4 and 5 are equipped with a common mechanism (not shown) of the injection advance angle. In an air-cooled engine, the cold air supply side is the most favorable place for placing the nozzles 4 and 5, while from the point of view of In these conditions, it is advisable to direct the air directly to the first nozzle 4. The nozzles 4 and 5 are preferably located in the direction of the rotating air flow. In the engine variant, the nozzles are combined in one nozzle housing 8. At the same time, the second one (and nozzle 5 is made with four holes, and the first is with two, the axes of which are diametrically opposite to the axis of the holes of the second nozzle 5.
    The method of bsu1tstest is as follows.
    Air is admitted to the cylinder through the inlet duct and valve (not shown, give rotation to the air, compress it with pores I and inject various types of fuel into the rotating compressed air through the fuel nozzles 4 and 5 into the combustion chamber 3. Auxiliary flame is injected through the first nozzle 4 fuel, mainly gas oil, with its subsequent ignition from contact with compressed air. Through the second nozzle 5 inject the main flame-resistant oxygen-containing fuel, mainly o methanol, followed by its ignition from the burning auxiliary fuel, combustion, expansion of the combustion products and exhaust from the cylinder, with the main fuel being injected in the center of the combustion chamber 3 in the direction 169818
    The research institutes on the wall of the recess in the bottom of the piston 1 and the duration of injection of both types of fuel are installed with overlapping, namely, injection 5 of the main fuel begins after two thirds of the duration of the injection of the secondary fuel.
    When the engine load changes, the amount of injected main fuel is changed, d the amount of supplemental toppings is kept constant or the amount is injected 1x of both types of fuel.
    At cold start of the engine inject lisch auxiliary
    15 fuel until the engine reaches idle.
    At full engine load, the volume ratio of the auxiliary fuel and the main fuel is kept equal to 1:30.
    . As the main fuel is-; use alcohols - methanol or ethanol with a contamination of up to 30 vol.%; flame retardant fuel with an ignition accelerator can be used as an auxiliary fuel.
    权利要求:
    Claims (18)
    [1]
    1. The method of operation of an internal combustion engine with compression ignition by admitting air into the cylinder through the inlet channel and valve, communicating rotational motion to air, compressing it with a piston and injecting various types of fuel into a stream of compressed air rotating in the combustion chamber through two fuel nozzles, and through the first nozzle is injected with auxiliary flammable fuel, mainly gas oil, with its subsequent ignition from contact with compressed air, and through the second nozzle the main hardly ignited replaceable oxygen-containing fuel, mainly methanol, with its subsequent ignition from a burning auxiliary fuel, combustion, expansion of the combustion products and exhaust from the cylinder, characterized in that, in order to reduce the toxicity of the exhaust gases, the main fuel is injected in the center of the combustion chamber. direction towards the wall of the recess in the piston bottom and the duration of the injection of both types of fuel set with overlap.
    [2]
    2. The method of pop. ^ characterized in that the injection of the main fuel begins after two-thirds of the duration of the auxiliary injection.
    [3]
    3. The method according to PP. 1, 2, which means that when the engine load changes, the amount of injected main fuel is changed, and the amount of auxiliary fuel is kept constant.
    [4]
    4. The method according to PP. 1, 2, with the fact that when the engine load changes, the amount of injected both types of fuel is changed.
    [5]
    5. The method according to PP. 1-4, which is related to the fact that when the engine is cold started, only auxiliary fuel is injected until the engine reaches idle speed.
    [6]
    6. The method according to PP 1-5, characterized in that at full engine load, the volume ratio of auxiliary fuel and main fuel is kept equal to 1:30.
    [7]
    7. The method according to PP. 1-6, t l and the fact that as the main fuel use alcohols - methanol or ethanol with pollution up to 30 vol.
    [8]
    8. The method according to PP. 1-6, t l and arising from the fact that as
    IWgTTTng
    16,981 auxiliary fuels use low-flammable fuels with the addition of an ignition accelerator.
    [9]
    9. A compression ignition internal combustion engine comprising at least one cylinder with a piston disposed therein, a cylinder head, a combustion chamber formed by a cylinder head and a piston crown, means for communicating rotational motion to the air in the combustion chamber and installed in the cylinder head two fuel nozzles, each of which is made with at least one spray hole, and the first nozzle is designed to inject auxiliary flammable fuel, mainly ha zoylya, with the help of the first fuel pump, and the second nozzle - for injection of the main flame-retardant oxygen-containing fuels, and mainly methanol, with the help of the second fuel pump, so that, in order to reduce exhaust gas toxicity, a recess is made in the piston bottom, a second nozzle is placed in the center of the combustion chamber and the axis of its spray holes are directed to the recess wall.
    [10]
    10. Engine pop. 9, it was made possible by the fact that the first nozzle is made with one hole and placed in the peripheral region of the combustion chamber, the axis of its opening being directed into the combustion chamber at an obtuse angle to the normal to the axis of the cylinder.
    [11]
    11. The engine according to paragraphs. 9-10, characterized in that the second nozzle is made with four holes, and the axis of the opening of the first nozzle is directed through a cone, about (developed by the axes of the holes of the second nozzle with the apex at the last.
    [12]
    12. The engine according to paragraphs. 9-11, cast so that, in the peripheral region of the combustion chamber, a bevel was made under the first nozzle.
    [13]
    13. The engine according to paragraphs. 9-12, according to the fact that the axis of the opening of the first nozzle intersects the parallel to the axis of the cylinder passing through the top of the second nozzle ·.
    [14]
    14. The engine according to paragraphs. 9-13, characterized in that the nozzles are installed at different angles to the axis of the cylinder.
    [15]
    15. The engine of claim. ^ Characterized in that the nozzles are fixed by a common grip.
    [16]
    16. The engine of claims. 9-15, characterized in that the fuel pumps of both nozzles are equipped with a common mechanism of the injection advance angle.
    [17]
    17. Engine pop. 9, characterized in that the nozzles are combined in one nozzle housing.
    [18]
    18. The engine according to claim 17, with the condition that the second nozzle is made with four holes, and the first with two, and the axes of the latter are directed diametrically opposite between the axes of the holes of the second nozzle.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR2446381A1|1980-08-08|
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    JPS5596318A|1980-07-22|
    ZA80190B|1981-01-28|
    GB2039608B|1983-07-20|
    DE2901210A1|1980-07-17|
    IT8019024D0|1980-01-03|
    FR2446381B1|1985-12-27|
    GB2039608A|1980-08-13|
    US4368702A|1983-01-18|
    BR8000164A|1980-09-23|
    IT1130166B|1986-06-11|
    DE2901210C2|1984-01-12|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2901210A|DE2901210C2|1979-01-13|1979-01-13|Method for operating an air-compressing, self-igniting internal combustion engine|
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