• 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 system for a multi-cylinder engine comprises a plurality of injection nozzles mounted on an engine to direct fuel into respective combustion spaces of the engine. Each nozzle incorporates a resiliently loaded pressure actuated valve member which controls the flow of fuel through an outlet from a fuel inlet. A fuel pump is provided for supplying fuel to the inlets in turn. Pilot pumps incorporated in the nozzles respectively cause a small volume of fuel to be delivered through the respective outlets in advance of the main volume of fuel. Pilot inlets on the injection nozzles respectively receive liquid under pressure in turn to actuate the respective pilot pumps and each nozzle incorporates a non-return valve disposed to allow fuel which has leaked past the respective valve member to flow to the respective pilot inlet when the liuid pressure at the pilot inlet is sufficiently low the system including a pressure pump for supplying liquid under pressure to the pilot inlets in turn and means for connecting the pilot inlets to a drain during at least part of the time when liquid is not being delivered thereto whereby the fuel which has leaked past the valve members can flow by way of said non-return valves to the drain.
    公开号:SU841603A3
    申请号:SU792744808
    申请日:1979-03-20
    公开日:1981-06-23
    发明作者:Фаррар Маубрэй Дориан
    申请人:Лукас Индастриз Лимитед (Фирма)；
    IPC主号:
    专利说明:

    (54) FUEL SYSTEM
    权利要求:
    Claims (3)
    [1]
    ; This invention relates to a motor structure. A known fuel system for a multiple internal combustion engine, comprising a plurality of injection nozzles mounted on an engine, each of which includes an elastically loaded valve element for controlling the flow of fuel, connected by an intake duct. and fuel outlet and non-return valve, injection fuel pump for alternately supplying fuel to the intake ports and auxiliary pumps placed in the nozzles for pre-feeding a small amount of fuel through the corresponding outlet ports ahead of the main fuel supply l. The disadvantage of this system is the complexity of the design. The purpose of the invention is to simplify the design. This goal is achieved by the fact that the X1zhda nozzle is equipped with a jBcnoMotive inlet for supplying pressurized fuel to the auxiliary pump from the injection pump and means for connecting the auxiliary inlet with the drain when the pre-feed stops. In addition, the auxiliary pump of each nozzle contains a cylinder and a plunger that is slidably mounted inside the cylinder, with one end of the cylinder in communication with the channel connecting the inlet and outlet fuel ports, and the other with the auxiliary inlet port. Moreover, each nozzle contains an additional non-return valve installed in the channel between the point of connection of the latter with the cylinder and the inlet. The drawing shows a constructive scheme of the fuel system. The system includes a nozzle 1, which includes a valve element 3 elastically loaded with a spring 2 and that the inlet 5 and the fuel inlet 6 are connected by the channel 4., The injection fuel pump 7 with the main valve & and an auxiliary 9 feed section and an auxiliary fuel pre-feed pump located in the nozzle 1, consisting of a cylinder 10 and a plunger 11, the Nozzle 1 is equipped with an auxiliary inlet 12 for supplying fuel to the auxiliary pump from the auxiliary section 9 of the injection pump 7 and compounds. auxiliary inlet 12 with a drain through the system of channels 13 of the pump 7 at the termination of the preliminary supply. One end of cylinder 10 communicates with channel 4 / and the other with auxiliary inlet 12. The latter is connected to spring placement cavity 14 via non-return valve 15. Nozzle 1 also contains an additional non return valve 16 installed in channel 4. The fuel system operated is following way. In the course of the injection stroke, the fuel from the pump section 7 goes to the auxiliary inlet 12 of the nozzle 1 and acts on the plunger 11, which displaces and increases the fuel pressure in the channel 4, which causes the valve element 3 to rise. With the termination of this supply, the auxiliary inlet 12 of the nozzle 1 is connected to the drain through the system of channels 13 of the pump 7. At the same time, the fuel accumulated in the cavity 14 of the nozzle 1 is also drained through the non-return valve 15. The plunger 11 returns to its place . At the end of the pre-flow, the main fuel supply from the main section 8 begins. As inlet 5. Under pressure of the fuel, first OTKjiHitBa has a non-return valve 16, and then the valve element 3 of the nozzle 1, and the fuel enters the engine and the engine stops supply valve element closes the outlet port 6, and non-return valve 16 stops the flow of fuel from channel 4 and into the pump 7. Thus, the proposed system provides a double fuel supply with -simplified performance design. 1. The fuel system for a multi-cylinder internal combustion engine, comprising a plurality of injection nozzles installed on the engine, the pickup of which includes an elastically loaded valve element for controlling the flow of fuel, connected inlet and outlet fuel channels and a non-return valve, fuel injection valve a pump for alternately supplying fuel to the inlets and auxiliary pumps placed in the injectors for pre-feeding a small quantity fuel through appropriate exhaust ports, with advance of the main fuel supply, characterized in that, in order to simplify the design, each nozzle is equipped with an auxiliary inlet to supply fuel under pressure to the auxiliary pump. auxiliary inlet connection with drain when the pre-feed is stopped.
    [2]
    2. A system according to claim 1, characterized in that the companion-friendly X1 each nozzle comprises a cylinder and a plunger installed inside the cylinder with sliding possibility, with one end of the cylinder communicating with a channel connecting the inlet and outlet fuel ports, and the other end with auxiliary inlet. ,
    [3]
    3. The system according to claim 2, characterized in that each nozzle contains an additional non-return valve installed in the channel between the point of connection of the latter with the cylinder it by the inlet port .; Sources of information taken into account during the examination 1. German patent W 736684, class, 46cГ 103 1943.
    ; &
    No
    类似技术:
    公开号 | 公开日 | 专利标题
    SU841603A3|1981-06-23|Fuel system
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    US3837324A|1974-09-24|Fuel injection system for internal combustion engines
    US4286553A|1981-09-01|Integrated fuel primer and crankcase drain system for internal combustion engine
    SU927130A3|1982-05-07|Rotary distributing fuel pump
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    ITRM950080A1|1995-09-04|FUEL INVENTION SYSTEM FOR INTERNAL COMBUSTION ENGINES.
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    GB1046951A|1966-10-26|Liquid fuel injection pumps for use with internal combustion engines
    US6145493A|2000-11-14|Fuel guidance system for a multicylinder internal combustion engine having inlet bores for connector pumps
    US4794888A|1989-01-03|Fuel puddle suction system for fuel injected engine
    US4440133A|1984-04-03|Device for premetered pressure-time injection
    GB1162494A|1969-08-27|Liquid Fuel Injection Pumping Apparatus for Supplying Fuel to Internal Combustion Engines.
    US20040003794A1|2004-01-08|Fuel-injection device
    US4463726A|1984-08-07|Distributor pump for injecting fuel into internal combustion engines
    GB1187074A|1970-04-08|Improvements in or relating to Fuel Injection Pumps for Internal Combustion Engines.
    US6415767B1|2002-07-09|Fuel injection for an internal combustion engine, with a multistage high-pressure pump and two pressure reservoirs
    JPH11159413A|1999-06-15|Fuel injector used for internal combustion engine
    GB902925A|1962-08-09|Improvements in or relating to fuel injection apparatus for internal combustion engines
    US8281767B2|2012-10-09|Pressure booster with integrated pressure reservoir
    GB2028421A|1980-03-05|Fuelinjection pump for internal-combustion engines
    US4951626A|1990-08-28|Electrically controlled fuel injection pump
    同族专利:
    公开号 | 公开日
    MX148188A|1983-03-24|
    JPS54130723A|1979-10-11|
    US4224903A|1980-09-30|
    FR2420662A1|1979-10-19|
    ES477347A1|1979-10-16|
    IT1110422B|1985-12-23|
    IT7920088D0|1979-02-09|
    DE2909981A1|1979-10-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR529511A|1919-01-29|1921-11-29|Ruston And Hornsby Ltd|Improvements in devices for the injection of liquid fuel in internal combustion engines|
    US2739645A|1954-11-29|1956-03-27|Byrne Doors Inc|Aircraft hangar door|
    FR1422953A|1964-11-10|1966-01-03|Bosch Gmbh Robert|Improvements to reciprocating fuel injection pumps comprising an auxiliary pump for controlling a regulator unit with reciprocating movements|
    AT276866B|1965-12-31|1969-12-10|Bosch Gmbh Robert|Fuel injection valve for pilot and main injection|
    US3391871A|1967-03-30|1968-07-09|Bosch Gmbh Robert|Fuel injection valve for internal combustion engines|
    AT292383B|1967-08-09|1971-08-25|Bosch Gmbh Robert|Fuel injection valve for pilot and main injection|
    DE1576478A1|1967-08-09|1970-01-29|Bosch Gmbh Robert|Fuel injection valve for pilot and main injection|
    DE1284687B|1967-10-18|1968-12-05|Bosch Gmbh Robert|Fuel injection valve for pilot and main injection|
    DE2349581C2|1973-10-03|1983-10-13|Robert Bosch Gmbh, 7000 Stuttgart|Fuel distributor injection pump for internal combustion engines|
    US3948446A|1975-01-29|1976-04-06|Deere & Company|Fuel injection nozzle|
    GB1578131A|1976-05-14|1980-11-05|Lucas Industries Ltd|Fuel supply systems for engines|US4271808A|1978-01-20|1981-06-09|Diesel Kiki Co., Ltd.|Fuel injection pump for internal combustion engines|
    GB2060052B|1979-10-05|1983-02-02|Lucas Industries Ltd|Fuel system for engines|
    US4612905A|1980-01-26|1986-09-23|Motoren-Werke Mannheim Ag, Vorm. Benz Stat. Motorenba|Fuel injection apparatus|
    GB2102890B|1981-06-26|1984-09-12|Lucas Ind Plc|Fuel pumping apparatus|
    US4446836A|1981-10-23|1984-05-08|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|
    DE3248713A1|1982-12-31|1984-07-05|Robert Bosch Gmbh, 7000 Stuttgart|METHOD FOR INJECTION OF FUEL AND FUEL INJECTION DEVICE FOR CARRYING OUT THE METHOD|
    JPS6075758A|1983-09-30|1985-04-30|Nissan Motor Co Ltd|Fuel feeder for internal-combustion engine|
    EP0316331B1|1986-07-30|1991-05-22|Ludwig Elsbett|Injection device for introducing fuels in the combustion chamber of an internal combustion engine|
    US4951626A|1988-02-10|1990-08-28|Robert Bosch Gmbh|Electrically controlled fuel injection pump|
    GB8902860D0|1989-02-09|1989-03-30|Lucas Ind Plc|Fuel injection pump|
    GB8912824D0|1989-06-03|1989-07-19|Lucas Ind Plc|Fuel pumping apparatus|
    GB8926477D0|1989-11-23|1990-01-10|Lucas Ind Plc|Fuel pumping apparatus|
    US5645224A|1995-03-27|1997-07-08|Caterpillar Inc.|Modulating flow diverter for a fuel injector|
    GB9507115D0|1995-04-06|1995-05-31|Lucas Ind Plc|Fuel pumping apparatus|
    US5743237A|1997-01-28|1998-04-28|Caterpillar Inc.|Hydraulically-actuated fuel injector with needle valve operated spill passage|
    US6634339B2|2001-10-31|2003-10-21|Caterpillar Inc|Front end rate shaping valve concept for a fuel injection system|
    US20060159572A1|2005-01-18|2006-07-20|Malcolm Higgins|Pilot injection pump|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB1104478|1978-03-21|
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