• 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 nozzle has a valve member biased to the closed position by a spring and a piston housed in a bore connected to the inlet of the nozzle by way of a non-return valve. A space between the piston and valve member is vented to a drain. In order to minimize leakage of fuel, the piston and the bore in which it is located define a groove which is connected to the fuel inlet so that any fuel leaking from the end of the piston subjected to the pressure of fuel at the inlet collects in the groove and returns to the inlet when the pressure of fuel at the inlet falls.
    公开号:SU850023A3
    申请号:SU792706058
    申请日:1979-01-10
    公开日:1981-07-23
    发明作者:Фаррар Маубрэй Дориан
    申请人:Лукас Индастриз Лимитед (Фирма)；
    IPC主号:
    专利说明:

    FIELD: engine building. A known nozzle for injecting liquid fuel into an internal combustion engine, comprising a housing with an inlet for fuel supply connected to an engine pump, a distributor fixed to the housing with an outlet and a valve element loaded on one side with a spring, and on the other side a fuel pressure located in the housing bore is a cylinder with a piston connected to the valve element and a spring, the piston having a smaller cross-sectional area compared to the cross-sectional area of the valve lementa channel for feeding fuel into the cylinder for communication ny s.vhodnym housing bore, and a non-return valve in the channel to prevent backflow of the celebrity Lebanon from the cylinder through the channel ij. The disadvantage of this nozzle 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 cylinder is made in the form of a sleeve and a flange, wherein the flange is fixed between the housing and the sprayer, the piston is connected between each other by an annular groove and an axial opening, and a non-return valve is installed at the outlet of the axial bore of the piston; the piston is located on the sprayer side at a distance from the latter equal to the width of the face; the non-return valve is provided with a spring loaded flat valve associated with the end of the piston; the opening of the housing is divided into two parts, the ierv of which is err. with a larger diameter than the second, and the axis of the first part is offset relative to the axis of the valve element, the sleeve is located in the first part of the orifice and the axis of the cylinder is aligned with the axis of the valve element, and part of the channel for supplying fuel to the cylinder is located in the sleeve. FIG. 1 shows a structural diagram of the nozzle; in fig. 2 - view of the nozzle body from the installation side of the sleeve; in fig. 3 — a partial view of the non-return valve and the cylinder with the piston; in fig. 4 is a top view of the non-return valve.
    The nozzle includes a housing 1 with an inlet 2 for fuel supply connected to the engine pump mounted on the housing 1 of the atomizer 3 with the outlet 4 and the valve element 5 loaded with a spring b on one side and fuel pressure on the other. In the bore 7 of the housing 1 there is a cylinder 8 with a piston 9 connected to the valve element 5 and the spring b. The piston 9 has a smaller cross-sectional area compared to the cross-sectional area of the valve element 5. In addition, the nozzle is provided with channels 1C for supplying fuel to cylinder 8, connecting with inlet 2, and non-return valve 21 to prevent backflow of fuel from the cylinder 8 through channel 10. Cylind 8 is made in the form of a sleeve with a flange 12, with .this. Flange 12 is fixed between the housing 1 and the sprayer 3. The piston 9 is provided with connected annular groove .13 and an axial bore 14 between itself and the axial bore 14, non-return valve 11 is tired detecting at the output of the axial bore 14 of the piston. 9.
    the piston 9 is located on the side of the atomizer 3 at a distance from the latter equal to the width of the flange 12,. Non-return valve 11 is provided with a spring-loaded flat valve 16 associated with the end of the port 9, Hole 7 of the housing 1 is divided into two parts, the first of which is made with a larger diameter than the second, and the axis of the first part is offset from the axis of the valve element 5, while the sleeve is located in the first part of the hole 7 and the axis of the cylinder B is aligned with the axis of the valve element 5, and part of the channel 10 for supplying fuel to the cylinder 8 is located in the sleeve,
    The operation of the nozzle is carried out as follows.
    When fuel is pumped from the pump into the inlet 2 of the housing 1, it enters the atomizer 3 and through channel 10 into the hole 7 through the cylinder B, the piston 9 and the non-return valve 11, the fuel pressure affects the valve element: 5, causing the latter to rise with. his saddle. When the valve element 5 is lifted, the fuel enters the engine through the outlet 4 of the spray gun 3. When the valve element 5 is raised, the pressure force of the fuel in the sprayer 3 is counteracted by the spring b and the pressure of the fuel in the hole 7 behind the return valve 1-1. by reducing the pressure in the inlet 2, the valve element 5 sits on its seat and feeds the fuel to the engine. stops. Fuel leaks from sprayer 3 and cylinder 8 return through channel 10 to inlet 2 of housing 1, which does not require additional funds to collect fuel leaks.
    Thus, the proposed nozzle design provides a simple and convenient form of execution,
    权利要求:
    Claims (1)
    [1]
    1. Patent of Great Britain No. 1412413 Cl, F 1 8, published. 1975,
    ./
    sixteen
    类似技术:
    公开号 | 公开日 | 专利标题
    US5458292A|1995-10-17|Two-stage fuel injection nozzle
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    US4964391A|1990-10-23|Check valve for engine fuel delivery systems
    US4375206A|1983-03-01|Fuel primer and enrichment system for an internal combustion engine
    SU927130A3|1982-05-07|Rotary distributing fuel pump
    US2898051A|1959-08-04|Fluid injection device
    US4984738A|1991-01-15|Unit injector for staged injection
    RU97113466A|1999-06-27|FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES
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    SU841603A3|1981-06-23|Fuel system
    US4475515A|1984-10-09|Fuel systems for compression ignition engines
    US4651779A|1987-03-24|Constant-pressure delivery valve for fuel injection pumps for diesel engines
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    RU2003129063A|2005-03-27|VALVE INJECTOR FOR FUEL INJECTION
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    US4018192A|1977-04-19|Water injection system for I.C. engines
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    US5357944A|1994-10-25|Fuel injection pump for internal combustion engines
    GB2114658A|1983-08-24|Fuel injection nozzle assembly
    US4153200A|1979-05-08|Fuel injection nozzles
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    US4549696A|1985-10-29|Fuel injection nozzles
    EP0672826B1|1998-08-12|Fuel injection nozzle
    同族专利:
    公开号 | 公开日
    IT7831309D0|1978-12-22|
    US4186884A|1980-02-05|
    ES476311A1|1979-05-01|
    JPS611625B2|1986-01-18|
    MX147691A|1983-01-05|
    FR2414641A1|1979-08-10|
    DE2900783A1|1979-07-12|
    IT1101350B|1985-09-28|
    FR2414641B1|1984-08-03|
    JPS5498420A|1979-08-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2595639A|1948-11-12|1952-05-06|American Bosch Corp|Fuel injection apparatus|
    US2647016A|1952-05-28|1953-07-28|American Locomotive Co|Fuel injector|
    GB762684A|1954-01-20|1956-12-05|David William Edgar Kyle|Improvements in and relating to liquid fuel injection equipment for internal combustion engines|
    GB808206A|1954-05-11|1959-01-28|Nylands Verksted|Improvements in fuel injection systems for internal combustion engines|
    DE2028453A1|1970-06-10|1971-12-16|Robert Bosch Gmbh, 7000 Stuttgart|Fuel injector|
    GB1412413A|1971-10-28|1975-11-05|Cav Ltd|Liquid fuel injection systems|
    GB1420931A|1972-01-15|1976-01-14|Cav Ltd|Fuel injection nozzles|
    GB1472401A|1973-05-12|1977-05-04|Cav Ltd|Fuel injection nozzles|US4346841A|1980-02-02|1982-08-31|Lucas Industries Limited|Fuel injection nozzle unit|
    US4418870A|1981-07-09|1983-12-06|Lucas Industries Plc|Fuel injection nozzles|
    US4566635A|1983-08-10|1986-01-28|Robert Bosch Gmbh|Fuel injection nozzle for internal combustion engines|
    DE3510075A1|1985-03-20|1986-09-25|Klöckner-Humboldt-Deutz AG, 5000 Köln|FUEL INJECTION VALVE|
    JPS631715A|1986-06-20|1988-01-06|Mazda Motor Corp|Intake device for engine|
    JPS6458386A|1987-08-28|1989-03-06|Iseki Agricult Mach|Feedback shelf in grain sorter|
    DE3814553A1|1988-04-29|1989-11-09|Kloeckner Humboldt Deutz Ag|Fuel injection valve|
    US6113012A|1998-06-25|2000-09-05|Caterpillar Inc.|Rate shaped fuel injector with internal dual flow rate office|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB99178|1978-01-11|
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