KR100270039B1 - Fuel cutting structure of injection pump in an automoble - Google Patents

Fuel cutting structure of injection pump in an automoble Download PDF

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Publication number
KR100270039B1
KR100270039B1 KR1019960064522A KR19960064522A KR100270039B1 KR 100270039 B1 KR100270039 B1 KR 100270039B1 KR 1019960064522 A KR1019960064522 A KR 1019960064522A KR 19960064522 A KR19960064522 A KR 19960064522A KR 100270039 B1 KR100270039 B1 KR 100270039B1
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South Korea
Prior art keywords
fuel
injection pump
fuel shutoff
operating
lever
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KR1019960064522A
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Korean (ko)
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KR19980046229A (en
Inventor
송영석
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정몽규
현대자동차주식회사
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Priority to KR1019960064522A priority Critical patent/KR100270039B1/en
Publication of KR19980046229A publication Critical patent/KR19980046229A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/447—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means specially adapted to limit fuel delivery or to supply excess of fuel temporarily, e.g. for starting of the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

PURPOSE: Fuel shutoff lever operating structure of an injection pump is provided to improve the endurance without cable by preventing incomplete operation of a fuel shutoff unit owing to use for a long time. CONSTITUTION: A fuel shutoff lever operating system of an injection pump comprises a cylinder connected to a fuel shutoff lever(2) of an injection pump(1) and a vehicle body to apply the elastic operating force to the fuel shutoff lever linearly; an operating fluid supply unit supplying the operating fluid to the cylinder; and a valve unit controlling the operating fluid from the operating fluid supply unit according to operation of a start switch(3), and supplying the operating fluid to the cylinder. The cable is prevented from being extended or cut, and the fuel shutoff lever is operated stably with the cylinder. The injection pump shuts off the fuel precisely and stably with the fuel shutoff lever operating system.

Description

인젝션펌프의 연료차단레버 작동구조Fuel shutoff lever operation structure of injection pump

본 발명은 디젤엔진의 연료차단장치에 관한 것으로서, 보다 상세하게는 인젝션펌프의 연료차단레버를 작동시키는 작동부의 구조에 관한 것이다.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.

일반적으로 디젤엔진은 실린더 내에 공기를 흡입하여 압축하면 500-550℃의 압축열이 발생되며, 이때 인젝터 노즐을 사용하여 연료를 분사하여 착화 연소시키는 엔진이다.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.

여기서, 상기와 같이 고온 고압의 연소실에 연료를 분사하는 디젤엔진의 연료 공급 장치를 살펴보면, 도 1에 도시된 바와 같이 연료가 저장된 연료탱크(50)와, 상기 연료탱크(50)로부터 연료를 흡입하는 피이드 펌프(51)와, 상기 피이드 펌프(51)에서 제공되는 연료를 여과하는 연료필터(52)와, 여과된 연료에 압력을 가하는 인젝션 펌프(53)와, 인젝션 펌프(53)에서 가압된 연료를 연소실에 분사하는 인젝션 노즐(54)로 구성되어 있다.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.

상기한 바와 같이 구성된 디젤엔진의 연료 공급 장치는 인젝션 펌프로부터 전달된 동력으로 작동되는 피이드 펌프(51)에서 연료탱크(50)의 연료를 흡입하여 연료필터(52)로 압송하여 여과하고, 여과된 연료는 인젝션 펌프(53)에서 가압된 상태로 상기 인젝션 노즐(54)을 통해 연소실에 분사되도록 한다.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.

이때, 상기 인젝션 노즐(54)을 통해 연소실에 분사되는 연료의 양은 운전자의 가속페달 조작력이 작용되도록 상기 인젝션 펌프(53)에 마련된 제어래크에 의해 이루어지는 바, 상기 제어래크의 조작상태로 연료분사량이 결정되어 엔진의 작동이 제어되도록 되어있다.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.

물론, 상기 제어래크에는 조속기와 같은 장치가 연결되어 엔진의 작동속도에 적합한 연료분사량이 자동적으로 조절될 수 있도록 되어 있다.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.

또한, 상기 인젝션 펌프(53)에는 도 2에 도시된 바와 같이 연료차단장치가 설치되어 엔진의 정지시 제공되던 연료를 차단하도록 하는 바, 인젝션 펌프(53)에 설치된 연료차단레버(60)와, 상기 연료차단레버(60)에 연결된 케이블(61)과, 차량의 시동스위치(62) 상태에 따라 상기 케이블(61)을 당기고 푸는 작동력을 제공하는 연료차단모터(63)로 구성되어 있다.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.

여기서, 상기 연료차단장치의 작동을 살펴보면 시동스위치(62)가 온(ON)되면 배터리(B)의 전원이 상기 연료차단모터(63)에 제공되어 상기 케이블(61)이 풀리도록 함으로써 인젝션펌프(53)의 연료차단레버(60)는 인젝션펌프(53)가 연료를 인젝션노즐(54)로 제공할 수 있는 상태가 되고, 엔진 작동중에는 계속적으로 상기와 같은 상태를 유지하다가, 상기 시동스위치(62)를 오프(OFF)시키면 상기 연료차단모터 (63)가 작동되어 풀린 상태의 케이블(61)을 감아 상기 연료차단레버(60)를 당김으로써 연료가 차단되도록 하는 것이다.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 (OFF) is turned off, the fuel cut-off motor 63 is operated to wind the cable 61 in a loose state to pull the fuel cut-off lever 60 so that fuel is cut off.

그런데, 상기한 바와 같이 구성되어 작동되는 연료차단장치는 장시간 사용되다보면 상기 케이블(61)이 느슨해져서 상기 연료차단모터(63)의 작동력이 연료차단레버(60)에 제대로 전달되지 않아 연료차단기능이 원활히 수행되지 못하는 경우가 있으며, 특히 상기 케이블(61)이 절단되는 경우에는 연료차단장치의 작동자체가 불가능한 문제점이 있다.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.

따라서, 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 인젝션펌프의 연료차단레버를 조작하는 작동기구를 개선하여 장시간의 사용에 따른 연료차단장치의 불완전 작동상태를 방지함과 아울러 케이블을 사용하지 않음으로써 그 내구성을 더욱 향상시킬 수 있도록 한 인젝션펌프의 연료차단레버 작동구조를 제공함에 그 목적이 있다.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.

제1도는 일반적인 디젤엔진의 연료장치를 도시한 구조도,1 is a structural diagram showing a fuel device of a general diesel engine,

제2도는 종래 기술에 의한 인젝션펌프의 연료차단레버 작동구조도,2 is a fuel cut-off lever operating structure of the injection pump according to the prior art,

제3도는 본 발명에 따른 인젝션펌프의 연료차단레버 작동구조도이다.3 is a fuel cut lever operating structure diagram of the injection pump according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1: 인젝션 펌프 2: 연료차단레버1: injection pump 2: fuel shut-off lever

3: 시동스위치 4: 공압실린더3: start switch 4: pneumatic cylinder

5: 에어탱크 6: 솔레노이드 밸브5: air tank 6: solenoid valve

B: 배터리B: battery

상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 인젝션펌프의 연료차단레버 작동구조는 인젝션펌프의 연료차단레버에 일단이 연결되고 타단은 차체에 연결되어 직선방향의 작동력을 상기 연료차단레버에 제공하도록 된 공압실린더와, 상기 공압실린더에 작동 유체인 고압공기를 제공하는 작동유체 공급원인 에어탱크와, 상기 작동유체 공급원과 공압 실린더 사이를 연결하는 라인 상에 설치되어, 시동스위치의 조작상태에 따라 상기 공압 실린더로 공급되는 작동유체 공급원으로부터의 작동유체를 단속하여 공압 실린더를 작동시키는 밸브 수단인 솔레노이드 밸브로 상기 실린더에 제공하도록 하는 밸브수단으로 구성된 것을 특징으로 한다.The fuel shutoff lever operating structure of the injection pump according to the present invention for achieving the above object is connected to the fuel cutoff lever of the injection pump and the other end is connected to the vehicle body to provide a linear actuation force to the fuel cutoff lever. A pneumatic cylinder configured to be provided, an air tank which is a working fluid supply source providing high pressure air as a working fluid to the pneumatic cylinder, and a line connecting the working fluid supply source and the pneumatic cylinder, And a valve means for providing the cylinder to a solenoid valve, which is a valve means for operating the pneumatic cylinder by intermittently operating the fluid from a working fluid supply source supplied to the pneumatic cylinder.

이하, 첨부된 도면을 참조하여 본 발명의 실시 예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 3은 본 발명에 따른 인젝션펌프의 연료차단레버 작동구조를 도시한 것으로서, 인젝션펌프(1)의 연료차단레버(2)에 일단이 연결되고 타단은 차체에 연결되어 직선방향의 신축작동력을 상기 연료차단레버(2)에 제공하도록 된 실린더와, 상기 실린더에 작동 유체를 제공하는 작동유체 공급원과, 시동스위치(3)의 조작상태에 따라 상기 작동유체 공급원으로부터의 작동유체를 제어하여 상기 실린더에 제공하도록 하는 밸브수단으로 구성되어 있다.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.

여기서, 상기 실린더는 공압실린더(4)로 하였으며, 상기 작동유체 공급원은 에어탱크(5)로 하고, 상기 밸브수단은 4포트 2위치 방향전환 솔레노이드 밸브(6)로 하여 상기 시동스위치(3)의 조작에 의해 배터리(B)의 전원을 공급받도록 되어 있다.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.

상기한 바와 같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above are as follows.

운전자가 시동키를 사용하여 시동스위치(3)를 온(ON)시키면 상기 시동스위치 (3)의 조작상태는 상기 솔레노이드 밸브(6)로 하여금 에어탱크(5)의 공기가 상기 공압실린더(4)에 작용하도록 하여, 상기 공압실린더(4)가 상기 연료차단레버(2)를 미는 방향으로 작동하여 인젝션펌프(1)에서 연료의 공급이 이루어지도록 함으로써, 시동이 걸리고 원활한 엔진 작동상태가 유지될 수 있도록 한다.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

물론, 엔진의 작동중에는 계속적으로 상기와 같은 상태를 유지하게되며, 운전자가 시동을 끄게되면, 상기 시동스위치(3)의 조작상태에 따라 상기 솔레노이드 밸브(6)는 에어탱크(5)에서 상기 공압실린더(4)에 제공되던 공압의 방향을 전환하여 상기 공압실린더(4)가 상기 연료차단레버(2)를 당기도록 함으로써, 인젝션펌프 (1)에서 연료가 차단되도록 한다.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 is blocked in the injection pump (1).

따라서, 종래와 같이 케이블의 늘어짐이나 단선과 같은 문제가 근본적으로 제거되고 실린더에 의해 연료차단레버의 안정된 작동상태가 확보되어 인젝션펌프의 연료차단작용이 항상 정확하고 안정된 상태로 수행될 수 있도록 하는 효과를 얻을 수 있다.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.

Claims (1)

인젝션펌프의 연료차단레버에 일단이 연결되고 타단은 차체에 연결되어 직선방향의 작동력을 상기 연료차단레버에 제공하도록 된 공압 실린더와, 상기 공압 실린더에 작동 유체인 고압 공기를 제공하는 작동유체 공급원인 에어탱크와, 상기 작동유체 공급원과 공압 실린더 사이를 연결하는 라인 상에 설치되어 시동스위치의 조작상태에 따라 공압 실린더로 공급되는 자공유체를 단속하여 공압실린더를 작동시키는 밸브수단인 솔레노이드 밸브로 구성된 것을 특징으로 하는 인젝션펌프의 연료차단레버 작동구조.One end is connected to the fuel shutoff lever of the injection pump and the other end is connected to the vehicle body to supply a linear actuation force to the fuel shutoff lever, and a working fluid supply source for providing high pressure air as a working fluid to the pneumatic cylinder. It is composed of a solenoid valve which is installed on the line connecting the air tank and the working fluid supply source and the pneumatic cylinder to operate the pneumatic cylinder by intermittent the self-sharing body supplied to the pneumatic cylinder in accordance with the operation state of the start switch. A fuel shutoff lever operating structure for an injection pump.
KR1019960064522A 1996-12-11 1996-12-11 Fuel cutting structure of injection pump in an automoble KR100270039B1 (en)

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Application Number Priority Date Filing Date Title
KR1019960064522A KR100270039B1 (en) 1996-12-11 1996-12-11 Fuel cutting structure of injection pump in an automoble

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Application Number Priority Date Filing Date Title
KR1019960064522A KR100270039B1 (en) 1996-12-11 1996-12-11 Fuel cutting structure of injection pump in an automoble

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KR19980046229A KR19980046229A (en) 1998-09-15
KR100270039B1 true KR100270039B1 (en) 2000-10-16

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