• 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:
    The invention can be used in diesel fuel equipment. The goal of the acquisition is to reduce the possibility of re-opening the nozzle (F). The working cavity 3 of the plunger pump communicates with F 5 through the discharge channel 4, the cross section of which limits the seat 9 of the injection valve (NC). In the saddle 9, a passage 10 is made for the fuel, and the saddle itself interacts with the locking element 12 NK,
    公开号:SU1426464A3
    申请号:SU864027609
    申请日:1986-06-10
    公开日:1988-09-23
    发明作者:Бюиссон Доминик；Анри Франсуа；Лебланк Жан；Пфайфле Хельмут；Пижеруле Жан
    申请人:Роберт Боси Гмбх (Фирма)；
    IPC主号:
    专利说明:

    ABOUT)
    with
    22
    1C
    O5

    Od 4
    CM
    "/
    reed located in the chamber 17 by the spring 16. The discharge channel 19 of the chamber 17 NK communicated with the spring chamber 8 F. The filling and drain chamber 20 of the pump communicated with the cavity
    3 bypass channel 21 with a control valve 22, embodied as a solenoid valve with an adjacent element, the seat of which has a through channel with a restrictive cross section of the bypass channel. The locking element has an annular sealing surface adjacent to its seat. The cavity 3 of the pump communicates with the channel
    4 at the beginning of the active stroke of the plunger
    1 additional channel. Between the cavity 3 and channel 4 in parallel to the passage 10 through the saddle 9 NC made throttling hole. The stop 18 NC can be made movable, is located with the possibility of interaction with the support plate 7 of the spring 6 F. And is equipped with a travel stop. The stop 18 may be made in the form of a piston, which is installed by a step with the largest diameter in the guide cylinder 11 of the NC, and by a step with the smallest diameter in the expelled axis coaxially with the cylinder 11 and the opening next to it. 6 hp f-ly, 6 ill.
    one
    The invention relates to an engine for use in diesel fuel equipment.
    The aim of the invention is to reduce the possibility of re-opening the nozzle.
    1 shows a structural diagram of the device; Fig. 2 is a partial structural diagram of the device with a view to the regulating valve; on fig.Z - the device in part of the pump, discharge valve and control valve, longitudinal section; figure 4 - control valve, longitudinal section; Fig. 3 shows a device at the place where the injection valve is installed, a longitudinal section; figure 6 - discharge valve with a movable stop.
    The device contains a plunger pump with a plunger 1 located in the cylinder 2 with a working cavity 3 connected via a discharge channel 4 with a nozzle 5 having a valve 6 (not shown) loaded with spring 6 with a supporting plate 7, and a spring valve 8 cross section of the discharge channel 4 with a seat 9, provided with a passage 10 for fuel and interacting with a tight-fitting, but having the ability to move in a guide cylinder
    11, the closing element 12 of the discharge valve, on the sealing surface 13 of which, at the end protruding from the guide cylinder 11, is connected to the discharge channel 4 of the chamber 14, a pressure flange 15, the reverse side of which is loaded with a spring 16 placed in the spring; valve, stop 18 of the discharge valve, discharge port 19 of the spring chamber 17, filling and discharge chamber 20 of the pump, bypass channel 21 for selectively connecting the working cavity 3 with the filling and drain chambers oh 20, a control valve 22 installed in the bypass channel 21 and a release channel 23 connecting the spring chamber 8 with the filling and discharge chamber 20.
    The discharge channel 19 of the spring chamber 17 of the heating valve communicates with the spring chamber B of the nozzles.
    The control valve 22 is made in the form of a solenoid valve equipped with a locking element 24 and a saddle 25 of the latter, the saddle 25 being provided with a passage 26 with a restrictive cross section of the bypass channel 21. The locking element 24 is provided with an annular
    sealing surface 27 adjacent to the saddle 25.
    The device is equipped with an additional channel 28 for communication of the working cavity 3 of the pump with the discharge channel 4 at the beginning of the active stroke of the plunger 1. A throttling opening 29 is made between the working cavity 3 and the discharge channel 4 parallel to the passage 10 through the seat 9 of the discharge valve. The stop 18 of the discharge valve can be filled movable, interacting with the support plate 7 and the spring 6 of the nozzle, and is equipped with a limiter 30 stroke. The movable stop 18 of the discharge valve is designed as a stepped piston 31, installed in a step with the largest diameter in the guide cylinder 11 of the discharge valve, and in a step with the smallest diameter in coaxially with the guide cylinder 11 and the adjacent opening 32.
    The device works as follows.
    When the injection stroke of the plunger 1 is compressed, the fuel is compressed in the working cavity 3, the pressure increases, the discharge valve opens, through the passage. 10 of the saddle 9 of which the fuel enters the injection channel 4 of the nozzle. Under pressure, the nozzle valve rises and the fuel is injected into the cylinder of a diesel engine. When injected, the injection valve is installed on the stop 18, which limits the compression of its spring 16, and in the case of the movable stop 18, the stroke of the discharge valve is limited to the stroke limiter 30. The connection of the spring chamber of the 17-injection valve with the spring chamber 8 of the injector does not impede the movement of the injection valve, thus ensuring intensive fuel injection and cutting off the fuel supply when opening the control valve 22, which determines the duration and amount of fuel supplied. An additional channel 28 and a throttling port 29 provide a preliminary increase in fuel pressure in the injection channel 4, which improves the intensity of fuel injection and reduces the possibility of fuel injection.
    0
    five
    five
    0
    five
    0
    five
    0
    five
    Thus, the proposed device reduces the possibility of re-opening the nozzle.
    F o rm a la invention
    权利要求:
    Claims (5)
    [1]
    1. A device for injecting fuel into an internal combustion engine containing a plunger pump with a plunger located in the cylinder to form a working cavity connected through a discharge channel with a nozzle having a valve loaded with a spring G supporting plate and a spring chamber with a discharge valve limiting transverse cross-section of the discharge channel with a seat, provided with a passage for fuel and interacting with a tightly fitting but able to move in the guide cylinder a closing element a pressure valve, on the sealing surface of which, on the protruding end of the guide cylinder, in the chamber connected to the discharge channel is a pressure flange, the reverse side of which is loaded with a spring placed in the spring chamber of the discharge valve located inside the guide cylinder, the stop of the discharge valve to limit the stroke the last, the discharge channel of the spring chamber of the discharge valve, the filling-drain chamber of the pump, the bypass channel for selective The connection of the working space with the filling and drain chamber, the control valve installed in the bypass channel and the bleeding channel connecting the nozzle spring chamber with the filling and drain chamber, are characterized in that, in order to reduce the possibility of reopening the nozzle, the discharge chamber of the spring chamber of the discharge valve communicated with the spring chamber of the nozzle.
    2. The device according to claim 1, characterized in that the control valve is made in the form of a solenoid valve equipped with a closing element and a saddle of the latter, and the saddle is made with a bore with a restrictive cross section of the bypass coupling.
    [2]
    3. The device according to claim 2, about tl and - Giving the fact that the closing Element of the control valve provides-} |: en the ring surface with an eye adjacent to its saddle.
    [3]
    4. The device according to, about t - with the fact that it
    [4]
    : filled with an additional channel for communication of the working space: an wasp with the discharge channel at the beginning of the active stroke of the plunger.
    5. The device according to claims 1-4, t - comprehensible in that between
    [5]
    The working cavity of the pump and the discharge channel parallel to the passageway. The saddle of the discharge valve has a throttling hole.
    f6. The device according to claim 4, which is based on the fact that the stop of the discharge valve is movable, is interoperable with the support plate of the nozzle spring and is equipped with a travel stop.
    7. The device according to claim 6, wherein the movable stop of the discharge valve is made in the form of a stepped piston, installed in a step with the largest diameter in the control cylinder of the discharge valve, and in a step with the smallest diameter in the alignment coaxially with the guide cylinder and the adjacent hole.
    J2
    efn / p.4
    22
    dzie.E
    15
    fj
    Fig.6
    类似技术:
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    同族专利:
    公开号 | 公开日
    US4903666A|1990-02-27|
    JPH0718391B2|1995-03-06|
    EP0205882A2|1986-12-30|
    DE3521427C2|1991-04-18|
    JPS61286573A|1986-12-17|
    DE3521427A1|1986-12-18|
    DE3681509D1|1991-10-24|
    KR870000506A|1987-02-18|
    AT67559T|1991-10-15|
    EP0205882B1|1991-09-18|
    US4805580A|1989-02-21|
    EP0205882A3|1989-09-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2421475A|1941-09-05|1947-06-03|Beeh Louis|Fuel feeding system|
    US2421425A|1946-01-11|1947-06-03|Leszkowicz Joseph|Retainer shield for potato diggers|
    US2628570A|1946-04-26|1953-02-17|American Bosch Corp|Fuel injection device|
    DE1601984A1|1967-03-23|1971-03-18|Continental Aviat And Engineer|OE single injection device|
    US3810453A|1971-10-18|1974-05-14|G Wolfe|Fuel injection system|
    AT353558B|1976-10-04|1979-04-15|Friedmann & Maier Ag|FUEL INJECTION DEVICE FOR INJECTION COMBUSTION MACHINES|
    US4129256A|1977-09-12|1978-12-12|General Motors Corporation|Electromagnetic unit fuel injector|
    US4392612A|1982-02-19|1983-07-12|General Motors Corporation|Electromagnetic unit fuel injector|
    JPH0223696B2|1982-09-17|1990-05-25|Nippon Jidosha Buhin Sogo Kenkyusho Kk|
    JPH031508B2|1982-12-06|1991-01-10|Nissan Motor|
    DE3310049A1|1983-03-19|1984-09-20|Robert Bosch Gmbh, 7000 Stuttgart|FUEL INJECTION DEVICE FOR INJECTING A FUEL MIXTURE MADE OF AT LEAST TWO COMPONENTS|
    JPH0316489B2|1983-04-11|1991-03-05|Nippon Jidosha Buhin Sogo Kenkyusho Kk|
    DE3411406A1|1983-07-29|1985-02-07|Robert Bosch Gmbh, 7000 Stuttgart|PUMP NOZZLE FOR FUEL INJECTION IN INTERNAL COMBUSTION ENGINES|
    DE8321888U1|1983-07-29|1984-10-25|Robert Bosch Gmbh, 7000 Stuttgart|PUMPEDUESE FOR FUEL INJECTION IN INTERNAL COMBUSTION ENGINES|
    US4527737A|1983-09-09|1985-07-09|General Motors Corporation|Electromagnetic unit fuel injector with differential valve|
    DE3523536A1|1984-09-14|1986-03-27|Robert Bosch Gmbh, 7000 Stuttgart|Electrically controlled fuel injection pump for internal combustion engines|
    JPH0445668B2|1985-01-04|1992-07-27|Zexel Corp|
    DE3521427C2|1985-06-14|1991-04-18|Robert Bosch Gmbh, 7000 Stuttgart, De|DE3521427C2|1985-06-14|1991-04-18|Robert Bosch Gmbh, 7000 Stuttgart, De|
    JPH0794812B2|1987-12-29|1995-10-11|トヨタ自動車株式会社|Actuator for injector|
    US5241935A|1988-02-03|1993-09-07|Servojet Electronic Systems, Ltd.|Accumulator fuel injection system|
    US4911127A|1989-07-12|1990-03-27|Cummins Engine Company, Inc.|Fuel injector for an internal combustion engine|
    US5250680A|1989-08-31|1993-10-05|Merrell Dow Pharmaceuticals Inc.|Heterogeneous synthesis of azepinones from esters|
    US4986472A|1989-09-05|1991-01-22|Cummins Engine Company, Inc.|High pressure unit fuel injector with timing chamber pressure control|
    CH677132A5|1990-01-05|1991-04-15|Sulzer Ag|Injection device for reciprocating piston engine - has valve closure member with piston section in valve chamber bore|
    US5067464A|1990-03-29|1991-11-26|Cummins Engine Company, Inc.|Fuel injector for an internal combustion engine|
    US5076240A|1990-06-07|1991-12-31|Cummins Engine Company, Inc.|Articulated open nozzle high pressure unit fuel injector|
    JPH05272429A|1992-03-25|1993-10-19|Mitsubishi Motors Corp|Fuel injector|
    DE4211651B4|1992-04-07|2004-11-18|Robert Bosch Gmbh|Fuel injection device, in particular pump nozzle for internal combustion engines|
    JPH0642372A|1992-07-23|1994-02-15|Zexel Corp|Fuel injection control device|
    US5537972A|1994-07-28|1996-07-23|Servojet Electronics Systems|Fuel injection system having a pressure intensifier incorporating an overtravel safety feature|
    US5522545A|1995-01-25|1996-06-04|Caterpillar Inc.|Hydraulically actuated fuel injector|
    GB9714647D0|1997-07-12|1997-09-17|Lucas Ind Plc|Injector|
    DE19928906A1|1999-06-24|2001-01-11|Bosch Gmbh Robert|Common rail injector|
    US6227175B1|1999-12-27|2001-05-08|Detroit Diesel Corporation|Fuel injector assembly having a combined initial injection and a peak injection pressure regulator|
    DE10207974A1|2002-02-25|2003-09-18|Bosch Gmbh Robert|Noise-optimized device for injecting fuel|
    JP3894179B2|2003-10-02|2007-03-14|トヨタ自動車株式会社|Fuel supply device for internal combustion engine|
    JP6706290B2|2017-08-24|2020-06-03|株式会社デンソー|Fuel injection valve|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3521427A|DE3521427C2|1985-06-14|1985-06-14|
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