• 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 fuel injection pump for supplying fuel to the cylinders of the internal combustion engine comprises a housing, a cylindrical sleeve inserted in the housing and provided with a single filling opening communicated with a fuel-feeding passage, and a piston rotatably and reciprocally slidable in the cylindrical sleeve. An end face of the piston encloses with the closing element of the pump a pump operation chamber which is filled with fuel from the filling opening through a number of longitudinal grooves formed in the piston. The longitudinal grooves are in communication with a central relief opening by means of a plurality of radial connecting passages formed in the piston.
    公开号:SU1358792A3
    申请号:SU843791617
    申请日:1984-09-21
    公开日:1987-12-07
    发明作者:Нотдурф Хайнц
    申请人:Роберт Бош Гмбх (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mechanical engineering, more specifically to engine-to-engine, and can be used in pumps for injecting fuel into an internal combustion engine.
    The aim of the invention is to increase the reliability of operation by preventing cavitation wear, which is achieved by increasing the cross section of the connection between the filling channel and the working chamber,
    The drawing shows schematically the pump, the General view.
    In the housing 1 of the distribution injection pump, a supply cavity 2 is formed with a supply channel 3, a sleeve 4 is installed with an internal cavity formed by a cylindrical surface 5 and fuel supply channels 6 according to the number of engine cylinders serviced by the pump; In sleeve 4, a single filling channel 7 is connected with a cavity of 2 feeds through the feeding channel Z ,. in which the stop mechanism 8 of valve 9 is installed, and the discharge channels 10, each of which is in communication with one of the fuel supply channels 6 of housing 1 "
    In the internal cavity, the sleeve 4 is placed with the possibility of reciprocating and rotational movement of the plunger-distributor 11c. The plunger-distributor has an end 12 at one end, which forms with the internal cavity of the sleeve 4 and the locking part 13 a working chamber 14, and at the other end 15s located in the cavity 2 power supply; a node with a reciprocating and rotating movement (not shown). An axial channel 16 is opened in the distributor plunger, open towards the working chamber 14, and filling longitudinal grooves 18, open towards the working chamber 14, distribution groove 19 and shut-off holes 20 are formed on the yoke of the side surface 17. Axial channel 16 communicates with each filling by a groove 18 through an additional radial channel 21, ac by a distribution groove and cutting holes through radial channels 22 and 23, respectively. On the distributor plunger 11 in the area of the cut-off openings 20 in the feed cavity 2 is placed with
    the possibility of tight movement along its axis the cyclic feed dispenser 24 with the actuator 25 from the regulator
    (not shown). Depending on the axial position of the dispenser 24, the active (injection) stroke of the plunger-distributor 11 varies, which ends after the shut-off valve
    openings 20 at the upper edge of dispenser 24, and thus determine the amount of fuel to be injected.
    Pressure channels 10 sleeves
    4, the number of which is equal to the number of serviced engine cylinders, are evenly spaced around the circumference of the cylindrical surface 5 in the zone of movement of the distribution groove 19 in such a way that during each injection one of them communicates with the latter to supply fuel to the corresponding engine cylinder.
    The pump operates as follows. The fuel in the working chamber 14 is filled through the longitudinal filling grooves 18 of the distributor plunger 11. The number of the filling grooves 18 corresponds to the number of serviced engine cylinders, and they are evenly spaced on the lateral surface 17 of the distributor plunger 11, V
    When the plunger distributor 11
    makes a filling move, i.e. when its movement is accompanied by an increase in the volume of the working chamber 14, one of the longitudinal filling slots 18 communicates with the filling
    channel 7. At this time, the distribution groove 19 and the shut-off holes 20 are not connected respectively with the injection channels, 10 sleeves, or the supply cavity 2. In the working chamber 14, a vacuum is created and the fuel from the supply cavity 2 is fed through the supply 3 and filling 7 channels to one of the filling slots 18 and through additional
    radial channels 21 and axial channel 16 will go to the rest of the filling grooves 18 and further into the working chamber through their open ends. In the supply channel 3, a locking mechanism 8 of the valve 9 is provided, which can be controlled by an electromagnet. Valve 9 Serves to shut off the supply channel 3, i.e. for stopping the supply of fuel to the working
    pump chamber 14. Thus, during operation, when the supply channel 3 is open, during the filling stroke of the distributor plunger 11, when the filling channel 7 of the sleeve 4 is connected to one of the longitudinal filling grooves, fuel can flow through the additional radial channels 21 into all the other filling grooves 18 and then into the working chamber 14, which is simultaneously filled also through the axial channel 16.
    Due to this, there is a very 15th wear of a pair of plunger-distribution-large cross-section for filler - liner by reducing the speed of the working chamber 14, which is especially fuel when filling the working tunnel at high speeds for its quick and complete filling.
    measures 14, and also increase the reliability of the engine stop by reducing
    When the internal combustion engine is turned off with the aid of the locking mechanism 8, only a small undesirable cavity remains in the zone between the latter and the filling channel.
    7, which is significantly less than the total volume of the working chamber 14 when the distributor plunger is in the bottom dead center.
    Such a pump installation, namely
    with additional radial channels 21, which communicate with each other all longitudinal filling grooves 18 and with a single filling channel 7, it allows reducing the cavitation wear of the plunger-distributor-sleeve pair by reducing the fuel velocity
    measures 14, and also increase the reliability of the engine stop by reducing
    20 dead space between the working chamber 14 and the locking mechanism 8.
    25
    7/5 / J2 13

    Editor G. Volkova
    Compiled by G. Velichkykga
    Tehred L. Serdyukova Proofreader And, Piece
    Order 6011/59 Circulation 504Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, - Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, st. Project, 4
    权利要求:
    Claims (1)
    [1]
    A PUMP FOR FUEL INJECTION IN THE INTERNAL COMBUSTION ENGINE, comprising a housing with a feed cavity with a feed channel in which a shut-off mechanism is installed, and fuels with supply channels according to the number of serviced engine cylinders, a sleeve with an internal cavity formed in the housing, formed by a cylindrical surface, the only filling channel and discharge channels in communication with the fuel supply channels of the housing, and the only filling channel communicates with the power cavity through the feed channel, size a plunger-distributor having an end face, which can form a working chamber with a sleeve, an axial taper open to the side of the working chamber, and a lateral surface on which are formed according to the number of serviced, in the inner cavity of the sleeve with the possibility of reciprocating and rotational movement the pump of the engine cylinders filling longitudinal grooves open towards the working chamber, a distribution groove communicated continuously with the working chamber through the axial channel and only during the pumping process with one of the injection chambers als sleeves, and cut-off holes, constantly communicated with. the working chamber through the axial channel, and placed on the distributor plunger in the area of shut-off holes in the supply cavity with the possibility of moving along the axis of the cyclic feed batcher, characterized in that, in order to increase operational reliability by preventing cavitation wear, the distributor plunger is equipped with additional radial channels according to the number of engine cylinders serviced by the pump, each channel communicating one of the filling longitudinal grooves with an axial channel.
    op ™ 1358792> sn
    类似技术:
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    US4951626A|1990-08-28|Electrically controlled fuel injection pump
    同族专利:
    公开号 | 公开日
    GB8423903D0|1984-10-31|
    GB2147058B|1987-09-23|
    JPH0432945B2|1992-06-01|
    DE3334199A1|1985-04-04|
    US4541789A|1985-09-17|
    JPS6088865A|1985-05-18|
    DE3334199C2|1992-03-19|
    GB2147058A|1985-05-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH204595A|1937-03-12|1939-05-15|Saurer Ag Adolph|Injection device for multi-cylinder internal combustion engines.|
    DE2449333A1|1974-10-17|1976-04-29|Bosch Gmbh Robert|FUEL INJECTION PUMP FOR COMBUSTION MACHINES|
    DE2449332C2|1974-10-17|1986-08-07|Robert Bosch Gmbh, 7000 Stuttgart|Fuel distributor injection pump for internal combustion engines|
    DE2503300C2|1975-01-28|1986-04-24|Robert Bosch Gmbh, 7000 Stuttgart|Fuel injection pump for internal combustion engines|
    JPS5879116A|1981-11-05|1983-05-12|Nissan Motor Co Ltd|Device for detecting amount of fuel injection in internal combustion engine|JPS635158A|1986-06-24|1988-01-11|Diesel Kiki Co Ltd|Unit injector|
    US5032067A|1988-05-31|1991-07-16|Textron Inc.|Lubricating - oil pump control|
    DE4006084A1|1990-02-27|1991-08-29|Bosch Gmbh Robert|METHOD AND REDUCTION OF RESIDUAL INJECTION AMOUNT OF INJECTION PUMPS|
    JP3562511B2|2001-12-25|2004-09-08|株式会社東京機械製作所|Printing machine pump|
    JP4143841B2|2003-09-18|2008-09-03|株式会社アドヴィックス|Piston pump|
    CN102563327B|2012-03-12|2015-01-14|启东市南方润滑液压设备有限公司|Hand-operated reversing distributor|
    AU2016277738B2|2015-12-30|2021-07-22|Graco Minnesota Inc.|Fluted piston components for pumps|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3334199A|DE3334199C2|1983-09-22|1983-09-22|
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