• 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 device for driving a fuel cutoff device provided in an injection pump of a diesel engine, in order to improve the reliability of its operation, one end is connected to the fuel cutoff lever (2) of the injection pump (1) and the other end is connected to the vehicle body. A working fluid supply source for supplying a working fluid to the fuel shut-off lever 2, a working fluid supply source for supplying a working fluid to the cylinder, and an operating state of the start switch 3 from the working fluid supply source. By providing a fuel shut-off lever operating structure of an injection pump composed of a valve means for controlling the working fluid of the pump to provide to the cylinder, the problem such as sagging or disconnection of the cable is essentially eliminated as in the prior art, and the fuel is shut off by the cylinder. The stable operating state of the lever is ensured so that the fuel cut-off action of the injection pump is always The effect that it can be done can be obtained.
    公开号:KR19980046229A
    申请号:KR1019960064522
    申请日:1996-12-11
    公开日:1998-09-15
    发明作者:송영석
    申请人:박병재；현대자동차 주식회사；
    IPC主号:
    专利说明:

    Fuel shutoff lever operation structure of injection pump
    The present invention relates to a fuel cutoff device of a diesel engine, and more particularly, to a structure of an operation unit for operating a fuel cutoff lever of an injection pump.
    In general, a diesel engine generates 500 to 550 ° C. of compressed heat when air is sucked into a cylinder and compressed, and in this case, an injector nozzle is used to inject fuel to ignite and combust combustion.
    Here, referring to the fuel supply device of the diesel engine for injecting fuel into the combustion chamber of the high temperature and high pressure as described above, as shown in FIG. 1, the fuel tank 50 stores the fuel and the fuel is sucked from the fuel tank 50. The feed pump 51, the fuel filter 52 for filtering the fuel provided by the feed pump 51, the injection pump 53 for applying pressure to the filtered fuel, and the pressurized pump 53. It consists of the injection nozzle 54 which injects fuel into a combustion chamber.
    The fuel supply device of the diesel engine configured as described above sucks the fuel of the fuel tank 50 from the feed pump 51 operated by the power delivered from the injection pump, transports the fuel to the fuel filter 52, and filters the filtered fuel. Fuel is injected into the combustion chamber through the injection nozzle 54 while being pressurized by the injection pump 53.
    At this time, the amount of fuel injected into the combustion chamber through the injection nozzle 54 is made by a control rack provided in the injection pump 53 so that the accelerator pedal operating force of the driver is applied, the fuel injection amount in the operation state of the control rack. It is determined that the operation of the engine is controlled.
    Of course, the control rack is connected to a device such as a governor so that the fuel injection amount suitable for the operating speed of the engine can be automatically adjusted.
    In addition, the injection pump 53 is provided with a fuel cut-off device as shown in FIG. 2 to cut off fuel provided when the engine is stopped, the fuel cut-off lever 60 installed in the injection pump 53; The cable 61 is connected to the fuel cut-off lever 60 and the fuel cut-off motor 63 provides an actuation force for pulling and releasing the cable 61 according to the state of the start switch 62 of the vehicle.
    Here, referring to the operation of the fuel cut-off device, when the start switch 62 is turned on, the power of the battery B is provided to the fuel cut-off motor 63 so that the cable 61 is loosened so that the injection pump ( The fuel shut-off lever 60 of 53 is in a state in which the injection pump 53 can supply fuel to the injection nozzle 54, and maintains the above state continuously while the engine is operating, and the start switch 62 When the fuel cell is turned off, the fuel cut motor 63 is operated to wind the cable 61 in a loose state to pull the fuel cut lever 60 so that fuel is cut off.
    However, the fuel cutoff device configured and operated as described above is loosened when the cable 61 is used for a long time, so that the operating force of the fuel cutoff motor 63 is not properly transmitted to the fuel cutoff lever 60, thereby preventing the fuel cutoff function. This may not be performed smoothly, especially when the cable 61 is cut there is a problem that the operation of the fuel cut device itself is impossible.
    Accordingly, the present invention has been made to solve the problems described above, by improving the operating mechanism for operating the fuel cut-off lever of the injection pump to prevent the incomplete operating state of the fuel cut-off device according to the long time use and the cable It is an object of the present invention to provide a fuel cut lever operating structure of an injection pump, which can further improve its durability by not using the same.
    1 is a structural diagram showing a fuel device of a typical diesel engine,
    2 is a fuel cut lever operating structure of the injection pump according to the prior art,
    3 is a fuel cut lever operating structure of the injection pump according to the present invention.
    Explanation of symbols for main parts of the drawings
    1: Injection pump 2: Fuel shut off lever
    3: start switch 4: pneumatic cylinder
    5: air tank 6: solenoid valve
    B: battery
    The fuel shutoff lever operating structure of the injection pump according to the present invention for achieving the object as described above is connected to the fuel cutoff lever of the injection pump and the other end is connected to the vehicle body to extend the linear actuation force to the fuel cutoff lever A cylinder adapted to provide, a working fluid source for supplying a working fluid to the cylinder, and a valve means for controlling the working fluid from the working fluid source according to an operation state of the start switch to provide the cylinder to the cylinder. do.
    Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
    3 is a view illustrating a fuel shutoff lever operating structure of the injection pump according to the present invention, one end of which is connected to the fuel shutoff lever 2 of the injection pump 1 and the other end connected to the vehicle body, thus providing a linear stretching force in the linear direction. A cylinder adapted to be provided to the fuel shutoff lever 2, a working fluid source for supplying a working fluid to the cylinder, and a working fluid from the working fluid source in accordance with an operating state of the start switch 3 to control the cylinder. It consists of a valve means for providing.
    Here, the cylinder is a pneumatic cylinder (4), the working fluid source is an air tank (5), the valve means is a four-port two-position directional solenoid valve (6) of the start switch (3) The battery B is supplied with power by the operation.
    Referring to the operation of the present invention configured as described above are as follows.
    When the driver turns on the start switch 3 by using the start key, the operation state of the start switch 3 causes the solenoid valve 6 to cause the air of the air tank 5 to enter the pneumatic cylinder 4. By operating the pneumatic cylinder (4) in the direction to push the fuel shut-off lever (2) to supply the fuel from the injection pump (1), it can be started and the engine operating state can be maintained smoothly Make sure
    Of course, the engine is continuously maintained as described above, and when the driver turns off the engine, the solenoid valve 6 is operated by the air tank 5 according to the operation state of the start switch 3. By switching the direction of the pneumatic pressure provided to the cylinder 4 to cause the pneumatic cylinder 4 to pull the fuel shut-off lever 2, the fuel in the injection pump 1 is blocked.
    Therefore, as in the prior art, problems such as cable sagging or disconnection are fundamentally eliminated, and a stable operating state of the fuel shutoff lever is ensured by the cylinder, so that the fuel cutoff action of the injection pump can be always performed in an accurate and stable state. Can be obtained.
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] A cylinder having one end connected to the fuel shutoff lever of the injection pump and the other end connected to the vehicle body so as to provide the fuel shutoff lever with a linear stretching force, a working fluid supply source providing a working fluid to the cylinder, and a start switch And a valve means for controlling the operating fluid from the working fluid supply source and providing the cylinder to the cylinder according to an operation state.
    [2" claim-type="Currently amended] The method of claim 1,
    The cylinder is a pneumatic cylinder, the working fluid source is an air tank, and the valve means is a four-port two-position directional solenoid valve.
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    同族专利:
    公开号 | 公开日
    KR100270039B1|2000-10-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1996-12-11|Application filed by 박병재, 현대자동차 주식회사
    1996-12-11|Priority to KR1019960064522A
    1998-09-15|Publication of KR19980046229A
    2000-10-16|Application granted
    2000-10-16|Publication of KR100270039B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019960064522A|KR100270039B1|1996-12-11|1996-12-11|Fuel cutting structure of injection pump in an automoble|
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