• 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 liquid fuel injection pumping apparatus for supplying fuel to an engine includes an injection pump to which fuel is supplied through a feed passage in a distributor member from a low pressure pump. Fuel is delivered by the injection pump through a separate delivery passage which can register with an outlet. In order to enable air to be purged from the passages and injection pump, the delivery passage during the time fuel is being supplied to the injection pump is arranged to register with a further port which communicates in the example with a fuel supply tank. A restrictor is provided to control fuel flow through the further port.
    公开号:SU955870A3
    申请号:SU802943149
    申请日:1980-07-04
    公开日:1982-08-30
    发明作者:Томас Джон Скиннер Роберт
    申请人:Лукас Индастриз Лимитед (Фирма)；
    IPC主号:
    专利说明:

    (54) FLOATING FLOATING ROTARY PUMP
    TYPE
    The invention relates to mechanical engineering, namely engine building, and can be used in the fuel systems of internal combustion engines with a rotary type fuel injection pump. A fuel-injected rotor-type pump for an internal combustion engine is known, comprising a housing disposed in the latter with synchronous rotation with an engine dispenser having a transverse channel in which two plungers are placed, an axial supply cavity permanently connected to the transverse plunger volume of the transverse channel and spaced along the radial axis inlet and outlet ducts, one ends of which are permanently connected to the feed cavity, while others exit to the rotational surface of the distributor placed around the distributor in the zone of the transverse channel there is an annular cam, the internal working profile of which is adjacent to the plungers, and made in the housing in different transverse planes with alternate connection with the feed cavity through the radial inlet and outlet channels of the distributor, respectively, the inlet channel communicated through an adjustable choke with a fuel priming pump, and the discharge channel communicated with the nozzle 11. The reliability of such a pump is reduced when during its operation in the supply cavity those with fuel air misses, which is necessary to remove the detachable blower toplivoprivod or have a manual vent. The purpose of the invention is to increase reliability by eliminating the formation of air plugs. This goal is achieved by the fact that an additional channel is made in the housing in the plane of the injection channel to connect the feeding cavity through the choke with the drain line during the period of at least part of the time the supply cavity communicates with the supply channel, and the drain line pipeline, with a check valve, when etsm check valve is made in the form of a spring-loaded slide valve to block the additional channel
    when a given pressure has been reached.
    FIG. 1 schematically shows a pump, a longitudinal section; in Fig.2, the plane of the discharge channels, the cross section; in fig. 3 - check valve, general view.
    The fuel injection pump consists of a casing 1, in opening 2 of which a valve 3 is placed rotatably. At one end valve 3 is connected to a drive shaft 4 for synchronous rotation with the engine, at the other end valve 3 is connected to a fuel pump pusher 1 dim pump 5 having an inlet b and exhaust 7 hole. The inlet b is connected by pipes with a capacity of 8 for fuel. The fuel pump 5 also has an overflow channel 9 for controlling the outlet pressure.
    The distributor 3 has a transverse channel 10 in which two plungers 11 are located. The plungers 11 have roller tappets (not shown) with which they mate with the inner working surface 12 of the annular cam 13 located around the distributor 3 in the zone of the transverse channel 10. Distributor 3 have an axial feed cavity 14, which is permanently communicated with the interplunger volume 15 of the transverse channel 10, as well as axially spaced radial inlet 16 and outlet
    17 channels, one ends of which are permanently connected to the feeding cavity 14, while others come to the surface
    18 of the rotation of the distributor 3. In the housing 1 of the pump in various transverse planes, they are made with the possibility of alternately connecting to the feed cavity 14 through radial
    distributor channels 16 and 17, respectively, supplying channel 19, communicated through an adjustable choke 20 and an annular groove 21 with a fuel priming pump 5, and a discharge channel 22 communicating with a nozzle (not shown), an additional channel 23 is made in the housing 1 in the plane of the discharge channel - connecting the supply cavity 14 through a drochsel 24 with a drain line 25 connected to the tank 8 for fuel. The drain line 25 is made in the form of a pipeline 26 with a secondary valve 27. The check valve 27 is designed as a spool 28, spring loaded 29 and located in the sleeve 30. The sleeve 30 has a threaded part 31 for connection to the housing 1 on the suction . The spool 28 has an axial drilling 32, communicated on one side through the throttle 24 with an additional channel, and on the other through radioring drilling 33 and the channel 34 with a blend.
    The pump works as follows
    The fuel from the tank 8 by the fuel-priming pump 5 is supplied to the annular groove 21, from where through the adjustable throttle 2.0, the inlet channel 19, the inlet channel 16 enters the feed cavity 14 and the inter-plunger volume 15. The amount of fuel entering the feed cavity the plunger is outwardly dependent on the position of the adjustable throttle. As the distributor turns, the inlet channel 16 will come out of the combined position with the inlet channel 19, and the outlet channel 17 with the discharge channel 22 / of which may be several. At this time, the plungers are driven inward by the action of the annular cam 13 and fuel is supplied to the engine injector. Further rotation of the distributor 3 leads to disconnection of the exhaust channel 17 with the injection 22 and the connection of the inlet 16, which can be two at the diametrical arrangement, with the supply pipe 19, which leads to the supply of fuel into the feed cavity 14, and the interplunger volume and cycle repeats .
    The additional channel 23 (one or several), made in the housing 1 in the plane of the discharge channel 22, connects the feed cavity 14 to the C71R through the throttle 24 and the check valve when the feed strips are connected to the fuel feed passage 19. The feed cavity can be connected to the drain. partially or for the entire period of the first connection with the inlet channel, while the air trapped in the supply cavity will be removed with a small amount of fuel through an additional valve 23, throttle 24 and drain line 25 into tank 8 for fuel. Drotsel 24 is selected so that the amount of fuel passed by it does not reduce the degree of filling of the feeding cavity 14.
    The check valve 27 is made pressure sensitive in the additional channel 23 and, when the pressure in the latter increases above a certain adjustable value, the valve spool 28, moving further along the fuel flow, removes from the message the radial drilling 33 with the channel 34, which leads to the separation of the additional channel 23 from drain line 25 and fuel tank 8, thereby preventing further fuel leakage.
    This embodiment of the fuel injection pump improves reliability
    the system as a whole, since it prevents the formation of air plugs in the internal cavities of the pump.
    权利要求:
    Claims (3)
    [1]
    1. A fuel injection pump of rotary type for an internal combustion engine, comprising a housing, in the latter with a synchronous rotation possibility with an engine, a distributor having a transverse channel in which two plungers are placed an axial supply cavity permanently connected to the interplunger volume of the transverse channel and spaced along the axial radial inlet and outlet channels, one ends of which are permanently connected to the feed cavity, while others extend to the surface the rotation of the distributor, located in the distributor circle in the zone of the transverse channel is an annular cam, the internal working profile of which is adjacent to the plungers, and made in the housing in different transverse planes with the possibility of alternately connecting to the feed cavity through the radial inlet and outlet channels of the distributor, respectively, supplying to-analog, communicated through an adjustable choke with a fuel priming pump, and a discharge channel in communication with the nozzle, characterized in that, in order to increase reliability by exclusion, and air plugs in the housing in the plane of the discharge channel, an additional channel is made to connect the feeding cavity through the choke to the drain line during the period of at least part of the time of communication of the feeding cavity with the feeding channel.
    [2]
    2. Pump according to Claim. 1, characterized in that the drain line is designed as a pipeline with a check valve.
    [3]
    3. The pump of claim 2, wherein the non-return valve is designed as a spring-loaded spool to close the additional channel when the pressure has reached a predetermined pressure.
    Sources of information taken into account in the examination
    1. Patent of Great Britain 117-33 cl. F 1 A published in 1969.
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU955870A3|1982-08-30|Fuel injection pump
    US4625694A|1986-12-02|Fuel pumping apparatus
    EP0048432A2|1982-03-31|Injection pump
    US3058425A|1962-10-16|Liquid fuel pumps for internal combustion engines
    US4879984A|1989-11-14|Fuel injection pump for internal combustion engines
    US3348488A|1967-10-24|Distributor fuel injection pump with precharging and pilot injection
    US2391174A|1945-12-18|Fluid feeding and distributing apparatus
    US4310291A|1982-01-12|Liquid fuel pumping apparatus
    EP0073410B1|1987-05-06|Distribution type fuel injection pump
    US2853947A|1958-09-30|Liquid fuel injection pumps for engines
    US4242059A|1980-12-30|Fuel pumping apparatus
    US4146003A|1979-03-27|Fuel injection pumping apparatus with drain passage
    US3404668A|1968-10-08|Fuel injection pump
    US2922371A|1960-01-26|Fuel injection pump
    US3299824A|1967-01-24|Rotary liquid metering pumps, in particular for the feed of fuel injection pumps
    US4381182A|1983-04-26|Fuel injection pump
    EP0715071B1|1997-09-17|Fuel pumping apparatus
    US3578881A|1971-05-18|Liquid fuel pumping apparatus for supplying fuel to an internal combustion engine
    EP0685641A2|1995-12-06|Variable rate pump
    US2445266A|1948-07-13|Fuel pumping and distributing device
    US4233002A|1980-11-11|Fuel injection system
    US5044899A|1991-09-03|Fuel pumping apparatus
    US3179100A|1965-04-20|Liquid fuel pumping apparatus for internal combustion engines
    EP0059943A1|1982-09-15|Fuel injection pump for internal combustion engines
    GB2053372A|1981-02-04|Liquid fuel pumping apparatus
    同族专利:
    公开号 | 公开日
    FR2461114A1|1981-01-30|
    IT8023084D0|1980-06-26|
    ZA803034B|1981-05-27|
    IT1131852B|1986-06-25|
    FR2461114B1|1983-03-18|
    US4393844A|1983-07-19|
    PL124392B1|1983-01-31|
    CA1125602A|1982-06-15|
    JPS5614852A|1981-02-13|
    AU5902680A|1981-01-15|
    ES8101713A1|1980-12-16|
    AR220635A1|1980-11-14|
    DE3020271A1|1981-01-08|
    ES492117A0|1980-12-16|
    PL225404A1|1981-02-27|
    IN153572B|1984-07-28|
    AU532577B2|1983-10-06|
    BR8003980A|1981-01-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US814883A|1905-04-13|1906-03-13|John E Starr|Means for pumping liquids.|
    US3181468A|1963-07-12|1965-05-04|Hartford Machine Screw Co|Fuel supply system|
    US3283668A|1965-03-01|1966-11-08|Suomen Autoteollisuus Ab Oy|Hydraulic motor with piston holding means|
    FR1539546A|1967-10-06|1968-09-13|Cav Ltd|Liquid fuel pumping device|
    US3936244A|1973-09-12|1976-02-03|C.A.V. Limited|Fuel injection pumping apparatus|
    GB1486931A|1974-01-04|1977-09-28|Cav Ltd|Liquid fuel injection pumping apparatus|
    GB1578028A|1976-06-26|1980-10-29|Lucas Industries Ltd|Liquid fuel injection pumps|
    US4153027A|1977-09-01|1979-05-08|C.A.V. Limited|Fuel injection pumping apparatus|
    US4325676A|1979-01-16|1982-04-20|Lucas Industries Limited|Liquid fuel pumping apparatus|
    US4309151A|1979-05-03|1982-01-05|Lucas Industries Limited|Liquid fuel injection pumping apparatus|US4480623A|1982-11-05|1984-11-06|Lucas Industries Public Limited Company|Liquid fuel injection pump|
    US4539956A|1982-12-09|1985-09-10|General Motors Corporation|Diesel fuel injection pump with adaptive torque balance control|
    US4902208A|1983-09-22|1990-02-20|Wood R A Ray|Pump having piston and cylinder rotatable respectively about spaced axes transverse to the reciprocating axis|
    DE3526629A1|1985-07-25|1987-02-05|Bosch Gmbh Robert|DISTRIBUTOR INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES|
    FR2586456B1|1985-08-21|1989-07-07|Lucas France|FUEL INJECTION PUMP WITH ROTARY DISTRIBUTOR FOR SUPPLYING INTERNAL COMBUSTION ENGINES|
    JPS62186055A|1986-02-12|1987-08-14|Sanshin Ind Co Ltd|Injection pump driving construction for fuel injection engine|
    GB8611687D0|1986-05-13|1986-06-18|Lucas Ind Plc|Liquid fuel injection pump|
    US4732131A|1986-08-26|1988-03-22|Brunswick Corporation|Fuel line purging device|
    GB8912824D0|1989-06-03|1989-07-19|Lucas Ind Plc|Fuel pumping apparatus|
    US5010913A|1990-01-10|1991-04-30|General Electric Co.|Fluid bleed apparatus|
    US5215060A|1991-07-16|1993-06-01|Stanadyne Automotive Corp.|Fuel system for rotary distributor fuel injection pump|
    GB9509609D0|1995-05-12|1995-07-05|Lucas Ind Plc|Fuel supply apparatus|
    GB0023242D0|2000-09-22|2000-11-01|Delphi Tech Inc|Pressure regulator|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB7923685|1979-07-06|
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