• 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:

    公开号:SU1001868A3
    申请号:SU803220200
    申请日:1980-12-18
    公开日:1983-02-28
    发明作者:Лач Райнхард
    申请人:Роберт Бош Гмбх (Фирма)；
    IPC主号:
    专利说明:

    planes perpendicular to the axis of the central electrode.
    A coaxial bypass can be branched into several partial, n-transom channels located on a conical surface coaxially with the electrode.
    Partial bypass channels can be tangential.
    The axes of the additional bypass channels may intersect with the axes of the partial bypass channels 5 of the main combustion chamber.
    The end of the coaxial bypass channel located on the side of the ignition chamber can be reduced in cross section.
    The part of the central electrode protruding into the coaxial bypass may have the same length as the part freely passing through the ignition chamber.
    The wall of the central electrode forming the heat pipe can be made thickened at the narrowest point between the wall of the ignition chamber and the central electrode.
    The central electrode may additionally send a device for heating it at start-up, warm-up, or low engine load.
    FIG. 1 shows the first embodiment of the engine, a section} in FIG. 2 - the same, front view; in fig. 3 — second embodiment of the engine; in fig. 4 shows the channels of the device according to the second embodiment, a cross section; in fig. 5 a third embodiment in a simplified form.
    In block 1 of the engine's internal cylinders, its combustion, shown in FIG. 1, there is a cylinder 2 in which a piston 3 is installed. The internal cavity of the cylinder head 4 forms the main combustion chamber 5. An insert b is installed in the wall of the combustion chamber 5, consisting of a threaded cylindrical part 7, with which the insert b is fixed in the wall of the combustion chamber 5, and a conical part 8, which ensures the air connection of the insert b to the wall of the combustion chamber 5. In the zone of the cylindrical part 7, the insert b has a cylindrical cavity forming the ignition chamber 9. The end of the wall 10 of the chamber 9 ignites into the combustion chamber 5. In the wall 10 there is a bypass 11 arranged coaxially with the axis of the insert b, which is surrounded by additional bypass channels 12. Four additional bypass channels 12 can be drawn in the insert b (Fig. 2).
    A spark ignition device is inserted into insert b outside. It is made in the form of a spark plug 13 consisting of a housing 14, an insulator 15 fixed therein with a central electrode 16, the central electrode 16 of a candle 13 passes through the ignition chamber 9, partially placed in the bypass channel 11 and connected to a high voltage source 17 . The portion of the central electrode 16 passing through the insert is made in the form of a heat pipe and has a cavity 18, the walls of which can be provided with a casing of a material having capillary properties. The cavity is filled with a small amount of filler / for example metallic sodium or potassium. There is a certain distance between the central electrode 16 and the wall of the bypass channel 11, which is a spark gap. In the zone where the occurrence of the spark discharge occurs, the wall of the central electrode 16 is thickened 6 in the insert 6 along the central electrode 16 in its upper part a heating device 19 is provided.
    权利要求:
    Claims (12)
    [1]
    In the embodiment of the device shown in FIG. 3, the internal combustion engine contains an insert 20 installed in the wall of the combustion chamber 5, containing an ignition chamber 21 through which the central electrode 22, designed as a heat pipe, passes. The latter is fixed in the insulator 23 and is supplied with a high voltage from the source 17. The end wall 24 of the ignition chamber 21 is thicker than in the first embodiment. In the sleeve 20, a bypass channel 25 is provided, which branches into several partial bypass channels 26 in communication with the combustion chamber 5. The partial bypass channels lie in a plane perpendicular to the axis of the bypass channel 25 and branch off from it tangentially. In the zone of the bypass channel 25 end wall. 24 of the insert 20 has a thickened shape and has a head 27 inserted into the combustion chamber 5. A flange 28 is formed on the opposite side of the wall 24, which fits into the ignition chamber 21 and reduces the cross section of the passageway 25 at this point. The central electrode 2.2 almost fits until its end, there will be a spark gap between the flange 28 and the central electrode 22. In addition, additional bypass channels 29 are provided in the sleeve 20, which connect the ignition chamber 21 to the combustion chamber 5. As can be seen from FIG. 4, the additional bypass channels 29 are located symmetrically around the bypass channel 25, with the axes of three of the channels 29 lying in the same plane with the axes of the respective partial bypass channels. FIG. 5 shows a simplified version of the device in which the ignition chamber 30 is provided, which is connected via a tangentially located bypass duct 31 to a combustion chamber 5. The central ignition electrode 32 of the ignition light 33 is mounted near the outlet of the bypass duct 31. In this case, the ignition chamber 30 has a circular cross section, and the electrode 32 is located diametrically in the ignition chamber 30 and its end is close to the wall of the ignition chamber 30, forming a spark gap. The engine works as follows. A combustible mixture is fed to the main combustion chamber 5 through the suction pipe and valve system (not shown). The composition of the mixture is poorer than that used for a conventional engine, or contains more exhaust gases. While compressing, the piston 3 directs the combustible mixture through the bypass channels JL1 and 12 into the ignition chamber 9, and from there the exhaust gases are withdrawn. As a result of the good heating conditions in the ignition chamber 9 of the inlet there, the poor combustible mixture obtains better conditions for ignition than the mixture in the main 5 section. In particular, heating occurs at the central electrode 16. After ignition of the combustible mixture in the area of the spark gap using a spark from a high voltage source 17, the mixture due to expansion flows in the form of jets of flame through the bypass channels 11 and 12 into the main combustion chamber 5. With these flame jets, the combustible mixture present therein ignites. By placing the central electrode 16 in the zone of the bypass channel 11, a reliable ignition of the combustible mixture in the combustion chamber 5 is ensured. With the help of a heat pipe central electrode 16, the thermal loads from the electrode, which appear in the ignition zone of the combustible mixture, are reduced. The heat pipe has a heat exchanger zone and a condensation zone, separated by a heat transfer zone. The part of the central electrode located in the ignition chamber 9 forms an evaporation zone, and the part of the electrode 16 passing through the continuous part of the insert 6 forms a condensation zone. A condensation zone for better heat exchange performed more evaporation zone. in the evaporation zone, at least part of the heat pipe filler is transformed by external heat into a vapor state, so that the vapor fills the entire cavity 18. By cooling in the condensation zone, the vapor goes into a liquid state and at the capillary action of the skin moves to the evaporation zone. While the central electrode 16 is cold, the heat pipe does not work and the cavity 18 has a heat-insulating effect. Due to this, the heating time of the electrode to the operating temperature is reduced. Additional bypass channels 12 reduce the rate of flow of gases from the ignition chamber and form several flame plumes, which improves the ignition of the main charge of the combustible mixture. The heating device 19 installed in box 6 improves the ignition conditions of the combustible mixture when the engine is cold. In a device made according to the embodiment shown in FIG. 3 and 4, by means of the tangential located partial overflow channels 26, an overflow is formed which provides improved heat transfer. The special arrangement of the axes of the additional bypass channels 29 with respect to the axes of the partial bypass channels 26 provides for the intensive formation of a flame core after ignition of the combustible mixture in X1fire 21 of ignition. In a device made according to the simplified version shown in FIG. 5, a spark gap is formed between the wall of the ignition chamber 30 and the end of the central electrode 32. The spark gap is located in the zone of accelerated flow, which contributes to the ignition of the combustible mixture. The proposed internal combustion engine has reduced fuel consumption and low tendency to detonation. The execution of the Central electrode in the form of a heat pipe increases its resistance. Claim 1. An internal combustion engine with ignition from an extraneous source, containing one main combustion chamber per cylinder and an ignition chamber for the main chamber located on the main combustion chamber and connected to it by means of by-pass channels for the flow of the working mixture, as well as spark ignition, having one central electrode, which is characterized by the fact that, in order to increase durability, the central electrode is made in the form of a heat pipe, acts through Yeru-ignition passageway into the surrounding area and is located there with the shortest distance to the walls of the ignition chamber ki forming a spark gap.
    [2]
    2. The motor according to claim 1, characterized in that the central electrode projects into the overflow channel.
    [3]
    3. The motor according to claim 1, wherein the ignition device is provided with an insert coaxially with the device on the outer wall of the main combustion chamber, and the overflow channel is coaxial with the central electrode.
    [4]
    4. The engine according to claim 3, distinguished by the fact that the coaxial bypass channel is surrounded by several additional bypass channels. lamy.
    [5]
    5. The motor according to claim 4, wherein the coaxial bypass channel is branched into several partial nepenycKHbtx channels lying in a plane perpendicular to the axis of the central electrode
    [6]
    6. An engine according to Claim 4, characterized in that the coaxial bypass channel is branched into several partial bypass channels located on a conical surface coaxially with the electrode.
    [7]
    7.Dvigatel on PP. 5 or 6, which is characterized by the fact that the parts of the SXXS V overflow channels are located tangentially.
    [8]
    8. The engine for PP. 5-7, characterized in that the axes of the part of the additional bypass channels intersect with the axes of the partial bypass channels in the main combustion chamber.
    [9]
    9. The engine according to claim 8, molded by the fact that the end of the coaxial bypass located on the side of the ignition chamber is reduced in cross section.
    [10]
    10.Engineer on PP. 1-9, in that the part of the central electrode projecting into the coaxial bypass channel has the same length as the part freely passing through the ignition chamber.
    [11]
    11. The motor according to claim 10, characterized in that the wall of the central electrode forming the heat pipe is made thickened at the narrowest point between the wall of the ignition chamber and the central electrode.
    [12]
    12. The engine for PP. 1-11, characterized in that the central electrode additionally has a device for heating it during start-up, warm-up or low engine load. Sources of information taken into account in the examination 1. Published for Japan No. 52-24630, class R 02 P 13/00, published. 1977.
    sixteen
    FIG. g
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    同族专利:
    公开号 | 公开日
    EP0031007A1|1981-07-01|
    JPH0156252B2|1989-11-29|
    JPS5698523A|1981-08-08|
    AT3897T|1983-07-15|
    DE2951029A1|1981-06-25|
    US4361122A|1982-11-30|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1790892A|1931-02-03|Edward t |
    US1342205A|1919-01-29|1920-06-01|George T Dochtermann|Spark-plug|
    US1907095A|1921-11-03|1933-05-02|Fairbanks Morse & Co|Internal combustion engine|
    FR841302A|1937-07-29|1939-05-17|Maschf Augsburg Nuernberg Ag|Insert for the opening between a combustion space and the cylinder space of a diesel engine|
    US2528081A|1947-07-29|1950-10-31|Rodnesky Joseph|Fuel preheater|
    US3954093A|1973-05-21|1976-05-04|Hughes James C|Ignition device for engines|
    US3921605A|1974-02-04|1975-11-25|Gen Motors Corp|Plasma jet ignition engine and method|
    US4013047A|1975-12-12|1977-03-22|General Motors Corporation|Engine with combustion wall temperature control means|
    JPS52109053A|1976-03-08|1977-09-12|Mitsubishi Motors Corp|Gasoline internal combustion engine|
    DE2705353C2|1977-02-09|1986-06-26|Daimler-Benz Ag, 7000 Stuttgart|Component with variable thermal conductivity or a corresponding component cross-section|
    US4265201A|1977-07-05|1981-05-05|Gerry Martin E|Stratified fuel ignition system including humid air injection|
    JPS5455209A|1977-10-11|1979-05-02|Toyota Motor Corp|Combustion chamber with accessory combustion chamber for internal combustion engine|
    DE2831442C2|1978-07-18|1987-01-15|Robert Bosch Gmbh, 7000 Stuttgart, De|
    US4300497A|1980-06-30|1981-11-17|Rockwell International Corporation|Prevaporizing diesel precombustion chamber|DE3141076C2|1981-10-16|1990-06-07|Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De|
    DE3206708A1|1982-02-25|1983-09-01|Robert Bosch Gmbh, 7000 Stuttgart|SPARK PLUG WITH A CHAMBER|
    US4491101A|1983-09-06|1985-01-01|Strumbos William P|Multiple heat-range spark plug|
    US4721081A|1986-06-03|1988-01-26|Caterpillar Inc.|Flame incubating and propagating apparatus for a fuel combustion system|
    US4810929A|1987-03-30|1989-03-07|Strumbos William P|Spark plug temperature control|
    US4926818A|1989-02-24|1990-05-22|The Regents Of The University Of California|Pulsed jet combustion generator for premixed charge engines|
    DE3913665A1|1989-04-26|1990-10-31|Ruhrgas Ag|Pre-combustion chamber ignition unit with precombustion housing - is screwed in wall of main combustion chamber, and has standard sparking plug|
    US4987868A|1989-05-08|1991-01-29|Caterpillar Inc.|Spark plug having an encapsulated center firing electrode gap|
    US5105780A|1990-08-08|1992-04-21|Caterpillar Inc.|Ignition assisting device for internal combustion engines|
    US20050092285A1|2003-11-03|2005-05-05|Klonis George P.|System and method for improving ignitability of dilute combustion mixtures|
    DE102005016125A1|2005-04-08|2006-10-12|Robert Bosch Gmbh|Ignition system of an internal combustion engine|
    US9476347B2|2010-11-23|2016-10-25|Woodward, Inc.|Controlled spark ignited flame kernel flow in fuel-fed prechambers|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19792951029|DE2951029A1|1979-12-19|1979-12-19|EXTERNAL COMBUSTION ENGINE WITH ONE MAIN COMBUSTION CHAMBER PER CYLINDER AND ONE IGNITION CHAMBER|
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