• 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 compression ignition direct injection internal combustion engine comprising at least each one cylinder, a piston and an injection nozzle, the cylinder having an inlet port for inducing rotation of the incoming air about the axis of the cylinder and a combustion chamber or cavity in the form of a body of rotation disposed in the piston, said chamber having, below the crown of the piston, a constriction which divides the chamber into an upper and a lower part.
    公开号:SU822766A3
    申请号:SU782609455
    申请日:1978-04-28
    公开日:1981-04-15
    发明作者:Лист Ханс；Пахернегг Зигфрид；Шукофф Бруно
    申请人:Дипл.Инж.Др.Др.Х.Ц (Фирма)；
    IPC主号:
    专利说明:

    the edge of the neck can be 70-120%.
    The neck is made in the form of a narrow cylindrical surface.
    Forming the upper and lower cavities in areas adjacent to the mouth of the mouth, rounded.
    The distance from the throat to the bottom of the piston is 20% of the maximum depth of the combustion chamber.
    Forming the lower cavity in the area adjacent to the edge of the neck, made conical.
    Forming the upper cavity in the area adjacent to the neck is made conical. The forming lower cavity is at least partially cylindrical and is parallel to the axis of the piston.
    Forming the upper cavity is adjacent to the surface of the piston head along a rounded surface.
    The bottom of the lower cavity is made at least partially flat and aligned with the generator of this cavity. The bottom of the lower cavity is made in the form of a conical protrusion coaxially with the cavity with the top facing the bottom of the piston.
    The angle at the apex of the conical protrusion of the lower rim does not exceed the angle between the axes of the nozzles of the nozzle, and the height of the conical protrusion can be no more than 75% of the maximum depth of the combustion chamber.
    Forming a conical protrusion of the lower cavity is parallel to the conical generatrix of this cavity. At the site adjacent to the neck edge
    The diameter of the base of the conical protrusion of the lower cavity may be 40% of the largest diameter of the cavity.
    FIG. 1 shows a vertical section of the piston and cylinder of an internal combustion engine with the piston in the top dead center position; in fig. 2 -. the same section of the piston and cylinder when the piston is in front of the top dead center, at the beginning of the injection, or when the piston moves down after the top dead center; Fig. 3 is a top view of the piston; in fig. 4 - section of the piston along the chamber; combustion with a cylindrical throat and a protrusion on the bottom of the chamber; in fig. 5 is a section of the piston along the combustion chamber with a rounded top cavity forming and a protrusion at the bottom of the chamber; in fig. b - section of the piston along the combustion chamber with a sharp edge of the neck and a cylindrical forming the lower cavity; in fig. 7 cross-section of the porn along the combustion chamber with the sharp edge of the neck and the cylindrical generatrix of the lower cavity adjoining along the rounded surface with the flat bottom of the chamber; on
    FIG. 8 is a cross section of a piston along the combustion chamber with a cylindrical throat edge and a cylindrical generatrix of the lower cavity, the mating surface with a flat portion of the bottom of the chamber, in the center of which is a protrusion.
    An internal combustion engine with direct fuel injection, compression ignition and rotational movement of the fuel charge around the axis 1 of the cylinder 2 contains a combustion chamber 4 located in the piston 3, having the shape of a rotational body and provided with a throat 5 dividing the combustion chamber 4 into two cavities: top b with inclined relative to the axis 7 of the chamber 4 forming 8, located between the plane of the bottom 9 of the piston 3 and the edge of the neck 5, and the bottom 10 located below the edge of the neck 5 with forming 11. The axes of the nozzles 12 of the nozzle 13 are directed to the lower cavity 10, the nozzle of the nozzle 14 of the nozzle 13 being coaxial with the combustion chamber 4; the neck 5 of the combustion chamber 4 can be provided with a narrow cylindrical surface 15. Rotation of the fuel mixture takes place in the direction of the arrow 16, which marks the direction of flow of fuel from the cylinder cavity 2 into the cavity of the combustion chamber 4. The bottom 9 of the piston 3 may be provided with a protrusion 17. The direction of flow of the combustible mixture after the combustion is indicated by an arrow 18.
    The operation of the device is as follows.
    权利要求:
    Claims (14)
    [1]
    The suction air in the compression process is set to rotate in accordance with arrow 15. When the piston 3 approaches the top dead center, the air rotating in the cavity of cylinder 2 flows through gseerLow 5. The combustion chamber 4 with a strong increase in speed in the vertical direction, as shown by arrow 16 In a state of intense turbulence, fuel is sprayed by at least three jets from the nozzles 11 of the nozzle 12 onto the wall of the combustion chamber below the neck 5, i.e. into the lower cavity 10 of the combustion chamber 4, the atomization of the fuel in the air being very fine and in a short period of time. Improvement of the mixture formation is achieved when certain proportions of the dimensions of the cavities are fulfilled, namely, the volume of the upper cavity B should be 1030% of the total volume of the combustion chamber 4, and the minimum diameter of the neck 5 is 75-90% of the maximum diameter of the combustion chamber 4. Optimum dimensions the angle of the edge of the neck 5, formed by the intersection of the tangents to the forming 8 upper cavity 6 and to the forming 10 lower cavity adjacent to the edge of the neck 5, is 70-120%. The proposed design of the combustion chamber 4 and the implementation of the bottom .9 porin 3 with a central protrusion 17 contributes to a better organization of the process of mixing. Due to improved mixing and increased combustion efficiency, as well as reduced throttling losses, it was possible to reduce fuel consumption and emission of unburnt carbon and soot, even with a very high compression ratio of high-speed internal combustion engines. Claim 1. An internal combustion engine with direct fuel injection by compression ignition and rotational movement of the fuel charge around the cylinder axis, containing a combustion chamber located in the piston and having the shape of a rotating body with a mouth that separates the combustion chamber into two cavities clone relative to the axis of the forming chamber, located between the plane of the bottom of the piston and the edge of the throat, and the lower one located under the edge into which the axles are directed to the nozzles, and the toe ylitel nozzle is arranged coaxially with the combustion chamber, characterized in that, in order to improve mixture formation, the minimum diameter of the neck is 75-9.0% of the maximum combustion chamber diameter and volume of the upper cavity - 10-30% of the total volume of combustion chamber
    [2]
    2. The engine pop.1, differing u and in that the angle of the neck edge formed by the intersection of the tangents to the generatrix of the upper cavity and to the generatrix of the lower cavity adjacent to the edge of the neck is 70-120%.
    [3]
    3. The engine according to claim 1, about tl and h and sch and and so that the neck is made in the form of a narrow cylindrical surface.
    [4]
    4. The engine according to claim 2, is different. u and with the fact that forming the upper and lower cavities in the areas adjacent to the neck, rounded.
    [5]
    5. The engine pop.1, differently and so that the distance from the throat to the bottom of the piston is 20% of the maximum depth of the combustion chamber.
    [6]
    6. The motor according to claim 2, about tl and h and y with and so that forming the lower cavity in the area adjacent to the neckline, is made conical.
    [7]
    7. The engine according to claim 2, characterized in that the forming upper cavity in the area adjacent to the throat is made conical.
    [8]
    8. The engine according to claim 2, about. And l and n and so that about: 1414 lower cavity, at least partially made cylindrical and located parallel to the axis of the piston.
    [9]
    9. The motor according to claim 2 is also distinguished by the fact that the forming upper cavity is adjacent to the surface of the piston head along a rounded surface.
    [10]
    10. The motor according to claim 1, from l and the fact that the bottom of the lower cavity is made at least partially flat and is adjacent to the generatrix of this cavity.
    [11]
    11. The engine according to claim 1, characterized in that the bottom of the lower cavity is made in the form of a conical protrusion coaxial with the cavity with the apex facing the bottom of the piston.
    [12]
    12. The motor according to claim 11, wherein the angle at the apex of the conical protrusion of the lower cavity does not exceed the angle between the nozzle nozzle axes, and the height of the conical protrusion is no more than 75% of the maximum depth of the combustion chamber.
    [13]
    13. The engine for PP. b and 11, differing in the fact that the conical protrusion of the lower cavity forms and is parallel to the conical generatrix of this cavity in the area adjacent to the neckline, 14. The motor according to claim 11, characterized in that the diameter of the base of the conical protrusion of the lower cavity is 40% of the largest cavity diameter. Priority paragraphs 29.04.77po nn. 3, 5, 7, 9, 11 01.13.78 pp. 1, 2, 4, 12 03/13/78 in paragraphs 6, a, 10, 13,
    [14]
    14. Sources of information taken into account during the examination 1. Swiss patent No. 211E50, cl. 104 a, publish. 1937
    (Put. 2
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    同族专利:
    公开号 | 公开日
    US4207843A|1980-06-17|
    IT7822785D0|1978-04-27|
    IT1095257B|1985-08-10|
    FR2388997A1|1978-11-24|
    DE2815717A1|1978-11-02|
    ES469258A1|1979-01-01|
    JPS6037290B2|1985-08-26|
    FR2388997B1|1982-08-27|
    SE7804765L|1978-10-30|
    JPS53136111A|1978-11-28|
    GB1594889A|1981-08-05|
    引用文献:
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    DE696077C|1937-04-23|1940-09-10|Saurer Ag Adolph|Injection internal combustion engine with air charge rotating around the cylinder axis|
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    US2828724A|1953-10-08|1958-04-01|Schweizerische Lokomotiv|Internal combustion engines of the injection type|
    CH337682A|1954-08-06|1959-04-15|Maschf Augsburg Nuernberg Ag|Internal combustion engine, in particular a diesel engine, with a combustion chamber located outside the cylinder space|
    FR1288819A|1961-02-14|1962-03-30|Advanced piston|
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    GB1187787A|1967-08-24|1970-04-15|Wissenschaftlich Techniches Ze|Improvements in or relating to Internal Combustion Engines|
    DE2038048C3|1970-07-31|1975-06-19|Maschinenfabrik Augsburg-Nuernberg Ag, 8500 Nuernberg|Air-compressing, direct-injection internal combustion engine|
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    DE2809914C2|1978-03-08|1984-09-06|M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg|Internal combustion engine|
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    JPS55153816A|1979-05-17|1980-12-01|Yanmar Diesel Engine Co Ltd|Combustion chamber of direct injection type diesel engine|
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    DE3025943C2|1980-07-09|1983-03-17|Daimler-Benz Ag, 7000 Stuttgart|Self-igniting internal combustion engine with a rotationally symmetrical piston bowl|
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    DE3275574D1|1981-08-13|1987-04-09|Perkins Engines Group|Internal combustion engine|
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    JPS59131922U|1983-02-24|1984-09-04|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT0307177A|AT369511B|1977-04-29|1977-04-29|AIR-COMPRESSING, DIRECTLY INJECTING ENGINE|
    AT0026378A|AT375441B|1978-01-13|1978-01-13|AIR COMPRESSING, DIRECTLY INJECTING VALVE CONTROLLED INTERNAL COMBUSTION ENGINE|
    AT0179278A|AT378992B|1978-03-13|1978-03-13|AIR-COMPRESSING, DIRECTLY INJECTING ENGINE|
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