• 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 pumping apparatus for supplying fuel to an internal combustion engine includes an injection pump comprising a pair of reciprocable plungers located in a bore and moved inwardly in timed relationship by cam lobes formed on an annular cam ring. The bore containing the plungers is connected to a delivery passage whereby fuel is delivered in turn during successive inward movement of the plunger to a plurality of outlet ports. Fuel is supplied to the injection pump by way of valve means from a further pump, also incorporating a pair of reciprocable plungers movable inwardly by means of cam lobes on a cam ring. The displacement of the plungers of the further pumps is greater than that of the plungers of the injection pump and means is provided to alter the stroke of the plungers of the further pump during which fuel is supplied to the injection pump. In one example this is achieved by means of a spill port which is brought into register with the bore containing the plungers of the further pumps and in addition the cam ring of the further pump is angularly adjustable.
    公开号:SU812189A3
    申请号:SU782612599
    申请日:1978-04-28
    公开日:1981-03-07
    发明作者:Ян Энтони Сосновски Станислав；Чарльз Поттер Джеймс
    申请人:Лукас Индастриз Лимитед (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to engine building.
    A pumping device for supplying fuel to an internal combustion engine is known, comprising a housing, a rotor distributor therein with a discharge channel and a main and additional transverse openings for accommodating the main and additional plungers of the injection pump, main and additional cam means for communicating with the plungers of movement inward when the rotor-distributor is turned, the discharge hole in the housing for alternately connecting to the discharge channel, the connecting channel crosses holes and means for changing the stroke of the additional plunger U].
    The disadvantage of this device is that it does not provide feed accuracy due to the occurrence of voids in the fuel received in the discharge pump.
    The aim of the invention is to improve the accuracy of fuel supply.
    This goal is achieved by the fact that the additional cam means 2 is located with an offset relative to the main cam means to act on the additional plunger when the discharge cable of the rotor-distributor and the discharge opening of the housing are disconnected, and a non-return valve is installed in the connecting channel; a chamber is made in the q rotor distributor, and a non-return valve is placed in the latter; the chamber is constantly connected to the main transverse opening of the distributor rotor; the device contains a safety valve for bypassing excess fuel from the connecting channel; the device contains valve means for controlling by supplying fuel with an additional pump plunger when starting the engine; the valve means comprises a valve element with a sleeve mounted in the housing with the ability to move to the fuel drain position an additional rotor of distributor holes or in the position of termination of last fuel drain, the apparatus comprises manually operated locking means for retaining the valve member in the fuel discharge position, said locking (means is a pawl.
    Haha. 1 is a diagram of the mutual arrangement of cam means; in FIG. 2 - general view of the pumping device; in FIG. , 3 is a schematic diagram of a pumping device. .
    The device comprises a housing 1, a rotor-distributor 2 located therein with a discharge channel 3, a main 4. And an additional 5 transverse openings for accommodating the main b and an additional .7 plungers of the injection pump, the main 8 and additional 9 cam means, the injection holes 10 in the housing 1, a connecting channel 11 of the transverse holes 4 and 5 and means 12 for changing the stroke of the additional plunger 7. The additional cam means 9 is offset with respect to the main cam means 8 for Impact on the additional plunger 7 when the discharge channel 3, the rotor-distributor 2 and the opening 10 of the housing 1 are disconnected. The chamber 13 is made in the rotor-distributor 2, and the non-return valve 14 is located in the latter. The device contains a safety valve for transferring excess fuel from the connecting channel 11 valve 15. The device is equipped with valve means for · controlling the supply of fuel with an additional plunger 7 ·, which contains a valve element 17 located in the sleeve 16, which is mounted with the possibility of movement in the polo ix drain fuel from the auxiliary otverstiya5 through drain kanal18 or polozhenieprekrascheniya draining fuel. The valve element 17 is equipped with manually controlled locking means in the form of a dog 19.
    The pump device is equipped with a booster pump 20 with a fuel supply line 21 to the discharge pump with a control throttle 22 installed in it. In the rotor distributor, support channels 23 are arranged, which can be connected to the valve means sleeve 16 by the bypass line 24. The pump 20 line 21 is also connected to the valve means channel 25 with a throttling hole 26.
    The device operates as follows **.
    When the rotor-distributor 2 rotates, the cam means 8 and 9 first make the additional plunger 7 move, and then the main plunger b. The movement of the plunger 7 causes η pressure increase in the connecting channel 11. In this case, the non-return valve 14 opens and the pressure also increases previously in the main transverse opening and in the discharge channel. Increased pressure prevents voids in the fuel. When the move of the plunger 6 occurs after. a further increase in pressure in the discharge channel 3 and the supply of fuel to one of the discharge openings 10. In case of excess pressure. fuel with blocked discharge openings 10, part of the fuel is bypassed through the safety valve 15. On a running engine, fuel can be bypassed from the additional hole 5 of the pump 15 by the valve element 17 into the drain channel 18. When the engine is started, the valve element 17 is manually released from the dog 19 and moves to a position in which the fuel bypass from the additional hole 5 to the drain channel 18 is stopped. This causes an increase in the starting flow of the discharge pump.
    Thus, the proposed device provides improved accuracy of fuel supply.
    权利要求:
    Claims (1)
    [1]
    This invention relates to a motor structure. A pumping device for supplying fuel to an internal combustion engine is known, comprising a housing, a distributor rotor housed therein with a discharge channel and main and additional transverse apertures for accommodating the primary and secondary plungers of the injection pump, primary and secondary cam means for communicating; 1 plungers inward movement when the rotor-distributor rotates, the discharge opening in the housing for alternate connection with the discharge channel, the connecting cross-section Apertures and means for changing the stroke of the additional plunger. A disadvantage of this device is that it does not provide accurate feed due to the occurrence of voids in the fuel entering the injection pump. The aim of the invention is to improve the accuracy of the fuel supply. This goal is achieved by the fact that the additional cam means are located offset from the main cam means to act on the additional plunger when the discharge channel of the rotor-distributor and the pressure opening of the housing are separated, and a non-return valve is installed in the connecting channel; Ks1mera is made in the distributor rotor, and the non-return valve is located in the latter; the chamber is permanently connected to the main transverse opening of the rotor-distributor; the device contains a safety valve for bypassing excess fuel from the connecting channel; the device comprises a valve means for controlling the supply of fuel by an additional pump plunger when the engine is started; the valve means comprises a valve element with a sleeve installed in the housing with the possibility of moving to the position of draining the fuel from the additional opening of the distribution rotor or to the position of stopping the discharge of fuel from the latter; the device contains a manually controlled shut-off means for holding the valve element. In order to drain the fuel, the shut-off jcpeecTBO is done in the guilty doggie. On G. 1 - an obrgikeia, the mutual disposition of the cam means in FIG. 2 - a general view of the pumping device; in fig. , 3 - principle on the scheme of the pumping device. The device contains a housing 1, a rotor-distributor 2c in it, with a discharge channel 3, a main 4. And an additional 5 transverse holes for accommodating the main 6 and an additional .7 plungers of the pressure pump, a main 8 and an additional 9 cams, punch holes 10 in the housing 1, connecting, the channel 11 of the transverse holes 4 and 5 and the means 12 for changing the stroke of the additional plunger 7. The additional cam means 9 are arranged offset from the main cam means 8 for Allow for additional plunger 7 when disconnecting the discharge channel 3, the rotor-distributor 2 and opening 10 of the housing 1. In the rotor-distributor 2, a chamber 13 is made, the latter is placed; non-return valve 14 “For transferring excess fuel from connecting channel 11, the device contains a safety valve 15. The device is equipped with valve means for controlling the fuel supply with an additional plunger 7., which contains a valve element 17 installed in the sleeve 16, which is installed with possibility of overflow to the drain position fuel from the additional opening 5 through the drain channel 18 or to the position of the pre-discharge of fuel. The valve element 17 is provided with a manually controlled shut-off device in the form of a pawl 19 The pump device is equipped with a booster pump 20 s, the fuel supply line 21 to the injection pump with a control throttle 22 installed in it. The rotor distributor has supporting channels 23 that are connected to the sleeve 16. valve means bypass line 24. Line 21 of Jasca 20 is also connected to valve means CayalMl i25 with a throttling opening of & m 26.; -. . . . . . The device works around c i .--:. . ,, . -, V When the rotor rotates - the distribution of the Hitler 2, the cam means 8 and 9 of the jumper force the alternator 1: 2: the plunger 7, and then the main switch) b. Plunger movement. 7 induces an increase in pressure on the connecting channel 11, thereby opening the return valve 14 and the pressure also rises preliminarily in the main transverse hole in the pressure channel. Increasing the pressure prevents the occurrence of voids in the fuel. When the plunger 6 moves, a subsequent increase in pressure in the discharge channel 3 occurs and fuel is supplied to one of the injection ports 10. In case of overpressure of the fuel with the injection ports 10 blocked, part of the fuel is bypassed through a safety valve 15. With the engine running, fuel can be bypassed from the additional port 5 of the pressure pump using the valve element 17 to the drain channel 18. When the engine is started, the valve element 17 manually clears the pawl 19 and moves to a position in KOTopcw bypass the fuel from the auxiliary holes 5 into the discharge channel 18 prekroitsaets. This calls & an increase in the starting supply of the injection pump. Thus, the proposed device provides increased accuracy of fuel supply. Claim 1. Pumping device for supplying fuel to an internal combustion engine, comprising a housing, a rotor-distributor accommodated therein with a pressure channel and main and additional transversal holes for accommodating the main and additional plugs: | pressure pump and additional cam means to communicate to the plungers | Inwardly during rotation of the distributor rotor, injection openings in the housing for alternate connection with the supercharged channel, connecting channel of the transverse holes and means for changing the stroke of the additional Plunger, in order to increase the accuracy of the fuel supply, the additional cam means are Laughing with respect to the main cam means to act on the additional plunger when disconnecting the distributor rrtor-ra channel and forcing retention adapter of the housing, and a connecting channel set nevdz VRÁTNA valve. 2j The device according to claim 1, tl ich; But I mean with this, in the rotor-distribution: (The camera has a camera, and in the latter there is a non-return key, i, 3. The device according to p. 2, which is correct, so that the camera
    permanently associated with the main transverse bore of the rotor-distributor.
    4. The device according to claim 1, 1, which means that it contains a safety valve for by-passing excess fuel from the active channel.
    5. The device according to If, subsection, since it contains valve means for controlling the supply of fuel by an additional pump plunger when the engine is started. ...,, -,:,,
    6. The device according to p. 5, of t l ich and Yu. the fact that the valve means contains a valve element with a sleeve J mounted s body
    with the possibility of moving to the position of draining the fuel from the additional opening of the rotor-distributor or to the position of stopping the discharge of fuel from the latter.
    7. The device according to claim b, is limited to the fact that it contains manually controlled locking means for holding the valve element in the fuel discharge positions. 8. The device according to claim 7, which is based on the fact that the locking means is made in the form of a dog.
    Sources of information taken into account in the examination of 15 1. USSR Copyright Certificate No. 153811, cl. F 02 M 59/12, 1963. G Futs,
    类似技术:
    公开号 | 公开日 | 专利标题
    SU812189A3|1981-03-07|Pumping device
    US5427066A|1995-06-27|Fuel system
    SU1554775A3|1990-03-30|Injection system for two-fuel ic-engine, and metering pump therefor
    SU927130A3|1982-05-07|Rotary distributing fuel pump
    US4224903A|1980-09-30|Fuel systems for internal combustion engines
    CA1065705A|1979-11-06|Timing control for fuel injection pump
    US2892453A|1959-06-30|Fuel injection systems for multicylinder engines
    US4709673A|1987-12-01|Fuel injection apparatus for internal combustion engines
    EP0846857A2|1998-06-10|Fuel system for rotary distributor fuel injection pump
    US4879984A|1989-11-14|Fuel injection pump for internal combustion engines
    US5040511A|1991-08-20|Fuel injection device for internal combustion engines, in particular unit fuel injector
    EP0413453B1|1993-11-10|Fuel pumping apparatus
    US3204561A|1965-09-07|Fuel pump
    US4440133A|1984-04-03|Device for premetered pressure-time injection
    US3498226A|1970-03-03|Liquid fuel pumping apparatus
    US4492200A|1985-01-08|Fuel pumping apparatus
    GB1577919A|1980-10-29|Fuel pumping apparatus
    US4951626A|1990-08-28|Electrically controlled fuel injection pump
    US3014466A|1961-12-26|New device for carrying out the double injection method in internal combustion engines
    US5666921A|1997-09-16|Fuel supply apparatus
    US4458649A|1984-07-10|Fuel injection pump for internal combustion engines
    US4232644A|1980-11-11|Fuel pumping apparatus
    US3398730A|1968-08-27|Fuel injection system and distributor valve therefor
    US4505245A|1985-03-19|Fuel pumping apparatus
    US4367715A|1983-01-11|Distribution injection pump for diesel engines
    同族专利:
    公开号 | 公开日
    JPS5416024A|1979-02-06|
    AU3549878A|1979-11-01|
    GB1603415A|1981-11-25|
    PL118811B1|1981-10-31|
    FR2389005B1|1982-11-19|
    IT7822587D0|1978-04-21|
    BR7802671A|1978-11-14|
    TR20292A|1981-01-07|
    ES469294A1|1979-01-01|
    CA1116489A|1982-01-19|
    DD136873A5|1979-08-01|
    AR215697A1|1979-10-31|
    US4173959A|1979-11-13|
    DE2818450A1|1978-11-02|
    AU517147B2|1981-07-09|
    ZA782214B|1979-04-25|
    IT1094468B|1985-08-02|
    PL206481A1|1979-02-12|
    FR2389005A1|1978-11-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2765741A|1953-01-19|1956-10-09|Bosch Arma Corp|Fuel injection pump|
    US3074351A|1958-09-01|1963-01-22|Foster Francis John|Pumps|
    US2989003A|1958-09-25|1961-06-20|Cav Ltd|Liquid fuel pumps for internal combustion engines|
    GB1006562A|1961-12-07|1965-10-06|Cav Ltd|Liquid fuel injection pumps|
    GB1216094A|1967-08-16|1970-12-16|Cav Ltd|Liquid fuel injection pumping apparatus|
    GB1254476A|1969-03-11|1971-11-24|Noginsky Zd Toplivnoi Apparatu|Fuel-injection pump for internal combustion engines|
    FR2166746A5|1972-01-07|1973-08-17|Ustav Pro Vyzkum Motorovych Vo|
    US4083345A|1975-10-14|1978-04-11|Stanadyne, Inc.|Fuel injection pump|
    US4098249A|1975-12-03|1978-07-04|Cav Limited|Fuel injection pumping apparatus|US4299542A|1978-09-15|1981-11-10|Lucas Industries Limited|Fuel injection pumping apparatus|
    ES8101710A1|1979-09-08|1980-12-16|Lucas Industries Ltd|Fuel pumping apparatus|
    US4383806A|1979-11-22|1983-05-17|Lucas Industries Limited|Fuel pumping apparatus|
    US4353336A|1980-01-10|1982-10-12|Lucas Industries Limited|Fuel pumping apparatus|
    US4357925A|1980-12-17|1982-11-09|The Bendix Corporation|Distributor injection pump for diesel engines|
    DE3123325A1|1981-06-12|1982-12-30|Robert Bosch Gmbh, 7000 Stuttgart|FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES|
    GB2102890B|1981-06-26|1984-09-12|Lucas Ind Plc|Fuel pumping apparatus|
    DE3128975A1|1981-07-22|1983-02-10|Robert Bosch Gmbh, 7000 Stuttgart|FUEL INJECTION PUMP|
    US4468179A|1982-02-05|1984-08-28|Lucas Industries Public Limited Company|Fuel injection pumping apparatus|
    JPH0138301Y2|1982-06-04|1989-11-16|
    JPH024781B2|1982-10-14|1990-01-30|Nissan Motor|
    JPS59203863A|1983-05-04|1984-11-19|Nissan Motor Co Ltd|Fuel injection pump for fuel injection type internal- combustion engine|
    DE3816508A1|1988-05-14|1989-11-23|Bosch Gmbh Robert|FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINE|
    GB8823846D0|1988-10-11|1988-11-16|Lucas Ind Plc|Fuel pumping apparatus|
    GB8903683D0|1989-02-17|1989-04-05|Lucas Ind Plc|Fuel pumping apparatus|
    EP0690220A1|1994-06-29|1996-01-03|Lucas Industries Public Limited Company|Variable output pump|
    US5688110A|1995-06-02|1997-11-18|Stanadyne Automotive Corp.|Fuel pump arrangement having cam driven low and high pressure reciprocating plunger pump units|
    EP0902181B1|1997-09-11|2003-12-17|Denso Corporation|Variable-discharge-rate high-pressure pump|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB18168/77A|GB1603415A|1977-04-30|1977-04-30|Liquid fuel injection pumps|
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