• 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:
    The present invention relates to a fuel supply device for an automobile, and more particularly, to prevent engine relief when the fuel pump cannot instantaneously deliver fuel when the fuel remaining in the fuel tank is low, and further, the fuel pressure in the delivery pipe. The present invention relates to a fuel auxiliary supply and a fuel pulsation absorber of an engine to prevent pulsation from occurring. The fuel auxiliary supply and fuel pulsation absorbing device of the present invention includes a cylinder 11 in communication with a delivery pipe 3 of a fuel supply device, a first piston 12 reciprocating in the cylinder 11, and the first piston. Between the first spring 13 to apply an elastic force to the 12, the second piston 14 installed in front of the first piston 12, between the first piston 12 and the second piston 14 A second spring 15 positioned to apply an elastic force to the second piston 14 and a connector 16 for limiting the distance between the first piston 12 and the second piston 14.
    公开号:KR19980056881A
    申请号:KR1019960076151
    申请日:1996-12-30
    公开日:1998-09-25
    发明作者:배연노
    申请人:박병재；현대자동차 주식회사；
    IPC主号:
    专利说明:

    Fuel auxiliary supply and fuel pulsation absorber of engine
    The present invention relates to a fuel supply device for an automobile, and more particularly, to prevent engine relief when the fuel pump cannot instantaneously deliver fuel when the fuel remaining in the fuel tank is low, and further, the fuel pressure in the delivery pipe. The present invention relates to a fuel auxiliary supply and a fuel pulsation absorber of an engine to prevent pulsation from occurring.
    As shown in FIG. 1, a vehicle fuel supply apparatus includes a fuel tank 1 storing fuel, a fuel tank 2 for delivering fuel in the fuel tank 1, and a delivery pipe 3 for distributing fuel. , An injector 4 for injecting the fuel of the delivery pipe 3 according to the injection timing, and a pressure regulator 5 for adjusting the pressure of the fuel. Reference numeral 6 is a fuel filter.
    When the fuel pump 2 is operated, the fuel of the fuel tank 1 is filtered by the foreign material in the fuel filter 6 and is supplied to the delivery pipe 3 along the fuel supply line. The fuel in the delivery pipe 3 is maintained at a constant pressure, and when the injector 4 is opened, it is injected into the cylinder through the open injector 4. When the pressure of the fuel is higher than a certain level, the pressure regulator 5 is opened, so that some fuel returns to the fuel tank 1 along the fuel return line.
    In the fuel supply device as described above, the fuel pump 2 cannot instantaneously send fuel because the fuel slumps when the fuel is running in a state where the fuel remaining amount in the fuel tank 1 is small. In this case, engine relief occurs, and in severe cases, engine stall occurs.
    And when the injector 4 injects fuel, the fuel pressure in the delivery pipe 3 instantly falls, and this pressure is immediately compensated by the hydraulic pressure from the fuel pump 2. As such, when the injector 4 injects fuel, a slight pressure change occurs on the fuel supply line. This phenomenon is repeated, and the pulsation occurs, and the pulsation is caused by the fuel supply line and the fuel return line mounted on the dash panel and other body panels. It is transmitted to the room through the body by the line. Therefore, the pulsation sound of the fuel pressure is transmitted to the room, causing a problem of room quietness.
    The present invention has been made to solve the above-mentioned problems of the prior art, it is possible to prevent the engine relief when the fuel pump is not able to discharge the fuel instantaneously when running in a state of low fuel remaining and also the pulsation caused by the change in fuel pressure It is an object of the present invention to provide a fuel auxiliary supply and a fuel pulsation absorber of an engine which prevents the occurrence of oil.
    The fuel auxiliary supply and fuel pulsation absorbing device of the engine of the present invention for achieving the above object is a cylinder in communication with the delivery pipe of the fuel supply device, the first piston reciprocating in the cylinder, applying an elastic force to the first piston A first spring, a second piston installed in front of the first piston, a second spring positioned between the first piston and the second piston to apply an elastic force to the second piston, and the first piston and the second piston It is characterized by consisting of a connector limiting the distance between the.
    1 is a configuration diagram of a fuel supply device of a conventional engine;
    2 is a configuration diagram of a fuel supply device configured with a fuel auxiliary supply and a fuel pulsation absorption device according to the present invention;
    3 is a block diagram of a fuel auxiliary supply and fuel pulsation absorption apparatus of the engine of the present invention.
    * Explanation of symbols for main parts of the drawings
    1. Fuel Tank 2. Fuel Pump
    3. Delivery pipe 4. Injector
    5.Pressure regulator 6. Fuel filter
    10. Fuel auxiliary supply and fuel pulsation absorption device
    11.Cylinder 12. First piston
    13. First spring 14. Second piston
    15. 2nd spring 16. End connection
    17. Air hole
    Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
    2 is a configuration diagram of a fuel supply device configured with a fuel auxiliary supply and a fuel pulsation absorbing device of the present invention, and FIG.
    As shown, the fuel auxiliary supply and fuel pulsation absorber of the engine of the present invention is connected to the delivery pipe 3 of the conventional fuel supply device.
    The fuel auxiliary supply and fuel pulsation absorbing device of the engine of the present invention includes a cylinder (11) in communication with the delivery pipe (3) of the fuel supply device, a first piston (12) reciprocating in the cylinder (11), and the first The first spring 13 to apply elastic force to the first piston 12, the second piston 14 installed in front of the first piston 12, the first piston 12 and the second piston 14 It is composed of a second spring (15) positioned between and applying an elastic force to the second piston 14, and the connector 16 for limiting the distance between the first piston 12 and the second piston (14). .
    An air hole is formed at the rear of the cylinder 11 to prevent negative pressure from being applied when the first piston 12 reciprocates. In addition, the connector 16 is provided with a snap ring at the front end portion and the rear end portion to shorten the distance between the first piston 12 and the second piston 14, but not to move away from the predetermined distance.
    The fuel auxiliary supply and fuel pulsation absorption apparatus of the engine of the present invention configured as described above acts as follows.
    When the fuel pump 2 fails to deliver the fuel and the fuel pressure is insufficient, the fuel in the cylinder 11 is replenished by the elastic force of the first spring 13. At this time, the first piston 12 and the second piston 14 move forward by the elastic force of the first spring 13 to deliver the fuel in the cylinder 11 to the delivery pipe 3 to reduce the fuel pressure. prevent.
    Next, when a minute pressure change occurs in the delivery pipe 3, the second piston 14 moves back and forth by the elastic force of the second ring 15 to absorb these minute pressure changes. That is, it absorbs the pulsation of fuel pressure.
    As described above, the fuel auxiliary supply and the fuel pulsation absorbing device of the engine of the present invention are caused by the elastic force of the first spring 13 when the fuel pump 2 fails to deliver the fuel momentarily while driving in a state where the fuel residual amount is low. By transmitting the fuel in (11) to the delivery pipe (3) to prevent the lowering of the fuel pressure, it is possible to prevent engine relief and the pulsation of the fuel pressure is a small amount in the cylinder (11) by the elastic force of the second spring (15). Fuel is sent to the delivery pipe 3, and if the fuel pressure is high, a small amount of fuel is taken into the cylinder 11 to absorb the pulsation of the fuel pressure.
    Therefore, the present invention provides an effect of stably supplying fuel to prevent engine emulation and stall phenomenon and to prevent pulsation so that pulsation noises ring inside the room.
    It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] A cylinder 11 in communication with the delivery pipe 3 of the fuel supply device, a first piston 12 reciprocating in the cylinder 11, and a first spring 13 applying an elastic force to the first piston 12. ), A second piston 14 installed in front of the first piston 12, and positioned between the first piston 12 and the second piston 14 to apply an elastic force to the second piston 14 Fuel auxiliary supply and fuel pulsation absorber of the engine, characterized in that it comprises a second spring (15) and the connector 16 for limiting the distance between the first piston 12 and the second piston (14) .
    [2" claim-type="Currently amended] The method of claim 1, wherein the connector 16 is provided with a snap ring at the front end and the rear end to shorten the distance between the first piston 12 and the second piston 14, but not far away from the predetermined Auxiliary fuel supply and pulsation absorbers for engines.
    类似技术:
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    同族专利:
    公开号 | 公开日
    KR100262690B1|2000-08-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1996-12-30|Application filed by 박병재, 현대자동차 주식회사
    1996-12-30|Priority to KR1019960076151A
    1998-09-25|Publication of KR19980056881A
    2000-08-01|Application granted
    2000-08-01|Publication of KR100262690B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019960076151A|KR100262690B1|1996-12-30|1996-12-30|Assistance fuel supply and fuel pulsatory absorption device|
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