• 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:
    In a combination which includes a fuel injection unit and a cylinder of a diesel engine provided with a cover, and formed with a fuel bore communicating with a suction chamber, a piston is reciprocally moving within the cylinder, and is provided with a slanted front and rear control edge for regulating the quantity of fuel. The cylinder and piston define piston- and cylinder-surfaces separated from each other by a very small clearance, and are movable relative to each other; an injection nozzle includes a spring-loaded needle, a common casing houses the piston and the cylinder, a securing flange is disposed between the fuel bore and an end of the cylinder facing the cover, a tensioning device stresses the securing flange against the cover, and the piston, during its stroke, passes over the fuel bore. The improvement includes a cylindrically offset recess formed within a region of the securing flange on the cylinder surface, and the front control edge of the piston is formed with a first step-like recess with respect to the piston-surface. Consequently any undesired pressure peaks are avoided within the cylinder, when the piston passes over the fuel bore, while the clearance is substantially maintained between the piston surface and the cylinder surface during the stroke of the piston.
    公开号:SU1346056A3
    申请号:SU843703218
    申请日:1984-02-16
    公开日:1987-10-15
    发明作者:Морель Йозеф；Шмидт Харальд
    申请人:Штейр-Даймлер-Пух Аг (Фирма)；
    IPC主号:
    专利说明:

    113
    FIELD OF THE INVENTION The present invention relates to a diesel engine for use in a diesel fuel system.
    The aim of the invention is to improve the process of fuel injection and increase the efficiency of injection pressure at a decrease in the pressure in the plunger pump.
    FIG. 1 shows the proposed unit, the look of the view, in FIG. 2 is the same longitudinal section; FIG. 3; a partial longitudinal section of an assembly having a stepped shoulder of a control edge of a plunger made in the form of a truncated cone surface; FIG. 4 - the same, with a stepped mustache, stupid labyrinthine cross-section.
    The unit contains plunzht.r 1 held by the coil spring 2 in the upper position in the pump 3 and installed with the possibility of longitudinal

    movement in the cylinder 4, which has an installation flange 5 at its lower end. The latter, by means of the clamping inlet 6,} screw the housing 7, the sprayer 8 and the spacer 9 of the nozzle with the fuel intake pipe 10, against the edge 11 of the cylinder 4 of the pump 3,
    The working surface 12 of the cylinder 4 of the pump 3 has, in the area of the mounting flange 5, a cylindrical step 13 of the pressure space 14 and is connected in its area through the radial holes 15, 16 (fuel supply channel) to the annular intake space 17 of the valve hub 6 or 19 for supplying or discharging fuel. The annular internal channel 20 of the cylinder 4 of the pump 3 (for receiving a fuel point) is connected through the opening 21 and the annular space 22 to the suction space 17, to seal the cylinder 4 of the pump 3 relative to the clamping sleeve 6, an 0-ring 24 is placed in its groove 23. The plunger of the pump 3 contains, at its lower end-25 on the front side, a control front cut-off edge 26 .. obliquely passing along a part of the perimeter, and the edge 26. is made backwards and forms a stepped shoulder 27 with a smaller diameter compared to the working surface 28 the plunger 1. The plunger 1 contains, in addition, another single rear cutting edge 29 which is
    the same obliquely passes backward along its perimeter with the formation of a stepped shoulder 30 with a smaller diameter as compared with the working surface 28 of the plunger 1. The longitudinal groove 31 of the plunger 1 of pump 3 in the zone of its lower end 25 connects the annular cavity formed by the ledge 32 pressure space 14 of the pump. The fastener 34 in the form of a pressure cup serves to secure the fuel injection unit to the diesel cylinder head (not shown).
    According to FIG. 3, the lateral surface 35 of the stepped shoulders 27 or 30 is made in the shape of the lateral surface of the truncated cone 36 or 37. According to FIG. The 4 step steps 27 or 30 have a labyrinthine cross section 38 or 39.
    The length of the cylindrical step 13 is two thirds of the thickness of the installation flange 5, and the diameter is a value different from the diameter of the working surface 28 of the plunger 1 and not more than 4%. The diameter of the stepped shoulder 27 is less than the diameter of the working surface 28 of the plunger 1 by no more than 4%.
    The unit works as follows.
    During the injection stroke of the plunger 1, after the holes 15 and 16 are closed, the pressure in the space 14 rises, and the fuel from it through the pipeline 10 enters the nozzle and is injected through the atomizer 8 into the diesel combustion chamber. The start of feeding is controlled by the front control edge 26 with step 27; providing improved sealing of the fluid in the plunger 1 and cylinder 4. The end of the feed is controlled by the trailing edge 29 with step 30.
    Thus, the proposed unit provides an improvement in the injection process and an increase in efficiency by increasing the injection pressure.
    55
    权利要求:
    Claims (3)
    [1]
    1. Unit for fuel injection in diesel. Containing a plunger pump for delivering fuel by means of a spool control. using control cut-off edges, which is located in common with him
    a spring-loaded nozzle with a locking needle, the pump cylinder being provided with a fuel supply channel connected to the suction space, which, when the stroke is in progress, plunger with a working surface having a front end edge and rear control cutting edges and a similar clamping sleeve the cylinder head of the pump mounting flange, which is located between the fuel supply channel and the end of the cylinder on the side of the cover, characterized in that, in order to improve the injection process ska fuel and increase efficiency by increasing the injection pressure, the pump cylinder at the site of the installation flange is made with a cylindrical ledge, the length of which is at least
    the measure is two-thirds of the thickness of the mounting flange, and the diameter is not more than 4% different from the diameter of the plunger working surface, and the front control edge of the plunger is in the form of a stepped shoulder, the diameter of which is smaller than the diameter of the plunger working surface no more than 4%.
    [2]
    2, an assembly according to claim 1, characterized in that the stepped shoulder of the control edge is made of a cyber-like cross section.
    [3]
    3. The unit according to claim 1, characterized in that the lateral surface of the stepped shoulder is made in the form of the surface of a truncated cone.
    Compiled by V.Pavlyukov A.Makovska Editor Tehred L.Oliynyk
    Order 4937/58 Edition 503
    VNIIPI Gosuda: Responsible Committee of the USSR
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, st. Project, 4
    Proofreader L. Pilipenko
    Subscription
    类似技术:
    公开号 | 公开日 | 专利标题
    US3464627A|1969-09-02|Electromagnetic fuel-injection valve
    US4771754A|1988-09-20|Pneumatic direct cylinder fuel injection system
    US5265804A|1993-11-30|Electrically controlled fuel injector unit
    SU927130A3|1982-05-07|Rotary distributing fuel pump
    CA1201029A|1986-02-25|Edge discharge pulse fuel injector
    US7891586B2|2011-02-22|Fuel injection valve for internal combustion engines
    US4213564A|1980-07-22|Fuel injector
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    CN1074089C|2001-10-31|Fuel injector for internal combustion engine
    SU1346056A3|1987-10-15|Unit for injecting fuel in diesel engine
    US4497298A|1985-02-05|Diesel fuel injection pump with solenoid controlled low-bounce valve
    RU2003129063A|2005-03-27|VALVE INJECTOR FOR FUEL INJECTION
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    US3382851A|1968-05-14|Fuel injection nozzle assembly
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    JP2939268B2|1999-08-25|Fuel injection pump distribution and control valve
    SU1288334A1|1987-02-07|Pressure valve of high-pressure fuel injection pump
    KR840002953A|1984-07-21|Reducing Fuel Injectors
    同族专利:
    公开号 | 公开日
    JPS59158374A|1984-09-07|
    BG43356A3|1988-05-16|
    DE3404042A1|1984-08-23|
    FR2541380A1|1984-08-24|
    IT1173288B|1987-06-18|
    IT8419661D0|1984-02-16|
    JPH0683956U|1994-12-02|
    DE3404042C2|1991-01-10|
    AT388214B|1989-05-26|
    FR2541380B1|1986-12-12|
    ATA54183A|1988-10-15|
    US4627570A|1986-12-09|
    JP2506191Y2|1996-08-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CA461348A|1949-11-29|Stanley Blakeway Richard|Means for injecting fuel into constant pressure internal combustion engines|
    GB411353A|1932-10-21|1934-06-07|Bosch Robert|Improvements in or relating to fuel injection pumps for internal combustion engines|
    GB443691A|1934-09-20|1936-03-04|Rudolf L Orange|Improvements in fuel injection pumps|
    FR897782A|1941-08-12|1945-03-30|Vertebral self-extensor apparatus|
    FR897982A|1942-09-12|1945-04-06|Bosch Gmbh Robert|Injection pump for internal combustion engines|
    DE763005C|1942-09-13|1954-03-29|Bosch Gmbh Robert|Injection pump|
    US2571501A|1945-08-17|1951-10-16|Gen Motors Corp|Fuel injection pump|
    DE1016493B|1950-10-02|1957-09-26|Stuttgarter Motorzubehoer G M|Fuel injection device for internal combustion engines|
    CH299030A|1950-12-08|1954-05-31|Daimler Benz Ag|Fuel injection device with injection pump and injection nozzle combined into one unit.|
    FR1054678A|1952-01-21|1954-02-12|Caterpillar Tractor Co|Advanced injection pump|
    US2890657A|1955-08-12|1959-06-16|Gen Motors Corp|Unit injector pump with pilot injection|
    DE1749266U|1956-01-17|1957-07-25|Bosch Gmbh Robert|FUEL INJECTION PUMPS, IN PARTICULAR FOR INTERNAL IGNITION ENGINES FOR DRIVING VEHICLES.|
    GB1159005A|1966-05-10|1969-07-23|Bryce Berger Ltd|Liquid Fuel Injection Pumps.|
    GB1256223A|1968-03-01|1971-12-08|Bryce Berger Ltd|Liquid fuel injection pumps|
    DE1805024C2|1968-10-25|1983-06-01|L'Orange GmbH, 7000 Stuttgart|A fuel injection device for internal combustion engines consisting of an assembly consisting of an injection pump and an injection valve|
    DK142959C|1971-03-23|1981-10-05|Vysoke Uceni Tech Brne|INJECTION PUMP FOR COMBUSTION ENGINES|
    BE788979A|1971-09-18|1973-01-15|Bosch Gmbh Robert|INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES|
    US3737100A|1971-11-18|1973-06-05|Allis Chalmers|Internally cooled unit injector|
    AT312993B|1972-01-27|1974-01-25|Friedmann & Maier Ag|Injection pump|
    CS159848B1|1972-11-06|1975-02-28|
    DE2302887A1|1973-01-20|1974-08-01|Orange Kg|FUEL INJECTION DEVICE|
    JPS5139847B2|1973-06-23|1976-10-30|
    US4163634A|1977-11-25|1979-08-07|Caterpillar Tractor Co.|Fuel pump plunger|
    SU968503A1|1978-01-19|1982-10-23|Московское Ордена Ленина, Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Высшее Техническое Училище Им. Н.Э.Баумана|Fuel feed apparatus|
    JPS608342B2|1978-09-09|1985-03-02|Mitsubishi Heavy Ind Ltd|
    JPH0223709B2|1980-07-01|1990-05-25|Bosch Gmbh Robert|
    EP0067807A1|1981-06-15|1982-12-22|Friedmann & Maier Aktiengesellschaft|Fixing device for an injection device for injection internal-combustion engines|DE19908154B4|1999-02-25|2006-11-09|Schaeffler Kg|clamping element|
    US6412705B1|2000-05-09|2002-07-02|Caterpillar Inc.|Hydraulically-actuated fuel injector having front end rate shaping capabilities and fuel injection system using same|
    US6945233B2|2002-12-23|2005-09-20|Csxt Intellectual Properties Corporation|System and method of optimizing fuel injection timing in a locomotive engine|
    DE102005025601A1|2005-06-03|2006-12-07|Man B & W Diesel Ag|Injection pump e.g. for internal combustion engine, has piston with intake area and high pressure area which are connected by two holes|
    DE102006040465A1|2006-08-29|2008-03-06|Man Diesel Se|Injection pump i.e. chamfer-controlled piston high pressure fuel injection pump, for diesel -internal-combustion engine, has chambers connected with each other with piston such that piston is locked in position of suction borehole|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT54183A|AT388214B|1983-02-17|1983-02-17|FUEL INJECTION UNIT FOR ONE CYLINDER OF A DIESEL ENGINE|
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