KR940002809Y1 - Auxiliary apparatus for electronic controlling of fuel ejecting pump - Google Patents
Auxiliary apparatus for electronic controlling of fuel ejecting pump Download PDFInfo
- Publication number
- KR940002809Y1 KR940002809Y1 KR92000333U KR920000333U KR940002809Y1 KR 940002809 Y1 KR940002809 Y1 KR 940002809Y1 KR 92000333 U KR92000333 U KR 92000333U KR 920000333 U KR920000333 U KR 920000333U KR 940002809 Y1 KR940002809 Y1 KR 940002809Y1
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- Prior art keywords
- fuel
- pressure
- chamber
- spring
- fuel injection
- Prior art date
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Classifications
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
- F02D2001/082—Transmission of control impulse to pump control, e.g. with power drive or power assistance electric
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
내용 없음.No content.
Description
제 1 도는 연료의 공급경로를 도시한 연료장치의 개략도.1 is a schematic diagram of a fuel apparatus showing a supply path of fuel.
제 2 도는 본 고안의 종단면도.2 is a longitudinal sectional view of the present invention.
제 3 도는 본 고안의 동작 상태를 단면도로써 표시한 것으로, (a)는 연료가 유입될 때, (b)는 연료가 압축될 때 (c)는 연료가 역류될때.3 is a cross-sectional view showing the operating state of the present invention, (a) when the fuel is introduced, (b) is when the fuel is compressed (c) is when the fuel backflow.
제 4 도는 챔버내의 압력 변화에 따른 연료분사량의 변화를 도시한 도표.4 is a diagram showing the change of fuel injection amount according to the pressure change in the chamber.
제 5 도는 본 고안에 따른 연료분사 펌프의 분사량 보조제어장치의 작용을 도시한 블록선도이다.5 is a block diagram showing the operation of the injection amount auxiliary control device of the fuel injection pump according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 연료분사펌프 2 : 연료챔버1: fuel injection pump 2: fuel chamber
3 : 압축조절밸브 4 : 반환파이프3: compression control valve 4: return pipe
5 : 소챔버 6 : 실린더 관5: small chamber 6: cylinder tube
6' : 통공 7 : 스프링6 ': through hole 7: spring
8 : 전자석 9 : 압지봉8: electromagnet 9: blotting rod
10 : 볼밸브 11 : 유출로10 ball valve 11 outlet
본 고안은 디젤엔진의 연소실내로 분사되는 연료의 량을 조절하기 위하여 전자제어식 압력조절밸브를 이용하여 엔진용 연료분사펌프의 연료챔버의 내부압력을 제어 함으로써 연료분사량을 조절하여, 연소에 필요한 공기와 연료의 비(이하 "공연비"라 함)를 적정 수준으로 유지시켜 최적의 연소가 이루어질 수 있도록 한 장치에 관한 것이다.The present invention controls the fuel injection amount by controlling the internal pressure of the fuel chamber of the fuel injection pump for the engine by using the electronically controlled pressure control valve to control the amount of fuel injected into the combustion chamber of the diesel engine, the air required for combustion The present invention relates to an apparatus for maintaining optimal ratio of fuel and fuel ratio (hereinafter referred to as "fuel ratio") to achieve optimum combustion.
종래의 디젤엔진용 연료펌프의 오버플로우밸브를 제 2 도에 도시한 바와같이 일정한 스프링 상수를 가지는 스프링 보올밸브로 구성된 것으로서 단지 일정압력에 따라 개폐작용만을 하도록 되어 있으므로, 연료챔버(2)내의 압력을 적절히 제어하지 못하는 폐단이 있었다.As shown in FIG. 2, the overflow valve of the conventional diesel engine fuel pump is composed of a spring bowl valve having a constant spring constant, and only opens and closes according to a predetermined pressure, so that the pressure in the fuel chamber 2 is reduced. There was a closure that did not control properly.
다시말하면 적정공연비를 유지시키지 못함으로써 외부환경변환에 따른 엔진 운전상의 불완전연소 개스나 출력저하등의 문제점을 안고 있는 것이다.In other words, there is a problem such as incomplete combustion gas or output reduction in the operation of the engine due to the external environment conversion by not maintaining the proper air fuel ratio.
따라서 본 고안은 상기의 결점을 보완하며 연료챔버내의 압력을 제어하여 연료분사량을 조절할 수 있는 장치를 제공하고자 종래의 오버플로우밸브측에 전자제어장치에 의해 제어되는 압력조절밸브를 설치한 것이다.Therefore, the present invention is to install a pressure regulating valve controlled by an electronic control device on the overflow valve side to provide a device that can adjust the fuel injection amount by controlling the pressure in the fuel chamber to compensate for the above drawbacks.
이하 본 고안에 따른 연료분사펌프의 작동관계를 종래의 연료분사펌프와 대비하여 그 구성 및 작용효과를 상세히 설명하면 다음과 같다.Hereinafter will be described in detail the configuration and operation effects of the operation of the fuel injection pump according to the present invention compared with the conventional fuel injection pump.
디젤엔진용 연료분사펌프(1)의 연료챔버(2)의 일측에 압력조절밸브(3), 디젤엔진용 연료분사펌프(1)의 연료챔버(2)의 일측에 압력조절밸브(3)를 부착함에 있어서, 이 압력조절밸브(3)는 반환파이프(4)와 연통하는 소챔버(5)를 형성하고, 내부에는 실린더판(6)을 입설하여 하단에 통공(6')을 형성하며, 실린더관(6)내에는 스프링(7)을 탄설하되, 스프링(7)의 하단에는 전자석(8)에 의해 동작되는 압지봉(9)을 전압시키고, 스프링(7)의 하단에는 볼밸브(10)를 장치하여 유출로(11)를 개폐하도록 한 것으로 부호 12는 전자제어 장치로서 이 제어값에 의하여 압지봉(9)이 제어되며, 13은 캠, 14는 플런저, 15는 압력변, 16은 연료유입구, 17은 바이패스공, 18은 연료공급펌프, 19는 연료 분사 방향, 20은 연료분사노즐, 21은 여과기, 22는 연료탱크, A는 연료관, B는 배럴상부이다.A pressure regulating valve 3 is provided at one side of the fuel chamber 2 of the fuel injection pump 1 for the diesel engine, and a pressure regulating valve 3 is provided at one side of the fuel chamber 2 of the fuel injection pump 1 for the diesel engine. In attaching, the pressure regulating valve 3 forms a small chamber 5 in communication with the return pipe 4, and a cylinder plate 6 is placed therein to form a through hole 6 'at the bottom thereof. A cylinder 7 is installed in the cylinder tube 6, and a pressure holding rod 9 operated by an electromagnet 8 is applied to a lower end of the spring 7, and a ball valve 10 is provided at the lower end of the spring 7. 12 indicates that the outflow passage 11 is opened and closed, and the reference numeral 12 denotes an electronic control device, in which the presser rod 9 is controlled by this control value, 13 is a cam, 14 is a plunger, 15 is a pressure valve, and 16 The fuel inlet, 17 is a bypass hole, 18 is a fuel supply pump, 19 is a fuel injection direction, 20 is a fuel injection nozzle, 21 is a filter, 22 is a fuel tank, A is a fuel pipe, and B is an upper barrel.
이와같이 구성된 본 고안은 연료공급펌프(18)에 의해 연료챔버(2)내로 공급된 연료는 플런저(14)가 하강함에 따라 연료유입구(16)와 연료관(A)을 통하여 배럴상부(B)로 유입된 후 플런저(14)가 상승하여 연료유입구(16)을 막게되면(도면 제 3 도)플런저 배럴상부(B)에 유입된 연료에 압력이 가해져 압력변(15)을 밀고 연료의 분사가 시작되며, 플런저(14)가 계속 상승하여 플런저(14)의 바이패스공(17)이 연료유입구(16)와 만나게 되면 플린저배럴 상부(B)의 고압의 연료는 연료챔버(2)내로 역류하여 연료분사가 중지되고 역류된 연료는 유출로(11)를 지나 소챔버(5)와 연통된 통공(6) 및 반환파이프(4)를 통해 연료분사펌프(1)와 연결된 연료탱크(22)로 반환되며, 플런저(14)가 계속 하강하면 연료탱크(22)내의 연료가 연료공급펌프(18)로부터 연료관(A)을 통해 다시 주입되어 챔버(2)내에 일정압을 유지하면 챔버(2)내의 압력과 배럴 상부(B)의 압력이 같아지고 이런 상태에서 플런저(14)가 다시 상승하여 배럴상부(B)의 연료를 배출하는 것으로 이때 연료배출량은 연료챔버(2)내의 연료압력에 의해 결정되는 것으로 자동차의 하중의 경중이나 속도에 따라 이를 적절히 조절하여야 하는바, 본 고안은 스프링(7)을 압지하는 압지봉(9)을 외부에 장치된 전자제어장치(12)의 제어를 받는 전자석(8)으로 이의 압지 상태를 조절하므로 연료챔버(2)내의 압력을 적절히 능동적으로 조절할 수가 있어 연료배출의 가감을 자동차의 주행상태, 연료의 온도, 대기압동에 따라 순간적으로 대처할 수가 있다.According to the present invention configured as described above, the fuel supplied into the fuel chamber 2 by the fuel supply pump 18 passes through the fuel inlet 16 and the fuel pipe A to the upper barrel B as the plunger 14 descends. When the plunger 14 rises to block the fuel inlet 16 after the inflow (Fig. 3), pressure is applied to the fuel flowing into the upper portion of the plunger barrel B to push the pressure valve 15 to start injection of the fuel. When the plunger 14 continues to rise and the bypass hole 17 of the plunger 14 meets the fuel inlet 16, the high-pressure fuel in the upper portion of the plunger barrel B flows back into the fuel chamber 2. The fuel injection is stopped and the refluxed fuel passes through the outlet passage 11 to the fuel tank 22 connected to the fuel injection pump 1 through the through hole 6 and the return pipe 4 communicating with the small chamber 5. When the plunger 14 continues to descend, the fuel in the fuel tank 22 is injected again from the fuel supply pump 18 through the fuel pipe A. If a certain pressure is maintained in the burr 2, the pressure in the chamber 2 is equal to the pressure in the upper barrel B. In this state, the plunger 14 rises again to discharge the fuel in the upper barrel B. The amount of fuel discharged is determined by the fuel pressure in the fuel chamber 2, and the amount of fuel must be properly adjusted according to the weight and speed of the vehicle's load. By controlling the holding state by the electromagnet 8 under the control of the installed electronic control device 12, the pressure in the fuel chamber 2 can be actively and appropriately adjusted so that the fuel discharge can be controlled by the driving state of the vehicle and the temperature of the fuel. As a result, it is possible to cope immediately with atmospheric pressure.
전자제어유니트는 대기압, 연료의 온도, 회전속도등을 감지하는 것이며 이조건을 감지하여 전자제어 장치에 명령하고 이 전자제어장치는 전자석(8)즉 압전체를 작동시켜 압지봉(9)을 제어하는 것이다.The electronic control unit detects atmospheric pressure, fuel temperature, rotational speed, etc., and detects this condition and commands the electronic control device. The electronic control device controls the pusher rod 9 by operating an electromagnet 8, that is, a piezoelectric body. will be.
즉, 블록선도와 같이 센서에 의해 감지된 연료 및 흡입공기의 온도, 주변대기압, 엔진회전속도등의 정보값에 대하여 미리 설정된 명령값에 따라 전자제어 장치를 통하여 압력조절밸브(3)의 개도를 제어 함으로써 연료쳄버(2)내로부터 일정량의 연료가 분사되게 하여 적정의 공연비가 유지될 수 있게 한다.That is, the opening degree of the pressure regulating valve 3 is controlled through the electronic control device according to a preset command value for information values such as temperature of the fuel and intake air, ambient atmospheric pressure, and engine rotation speed detected by the sensor as shown in the block diagram. By controlling, a certain amount of fuel is injected from the fuel chamber 2 so that an appropriate air-fuel ratio can be maintained.
예를들면 엔진의 고속회전시, 압지봉(9)의 누르는 힘을 강하게 하여 연료챔버(2)내의 압력을 강하게 하면 연료챔버(2)내의 연료가 배럴상부(B)로 많이 유입되어 분사량을 많게하고, 반대로 엔진의 저속 회전시에는 상부(B)로 유입될 때 적은양이 유입되어 결국 분사되는 연료량이 적게되는 것이다.For example, during high-speed rotation of the engine, if the pressure in the fuel chamber 2 is increased by increasing the pressing force of the pressure holding rod 9, the fuel in the fuel chamber 2 flows into the upper portion B of the barrel to increase the injection amount. On the contrary, when the engine rotates at a low speed, a small amount flows into the upper portion B, thereby reducing the amount of fuel injected.
위와 같이 본 고안은 상기 압력조절밸브(3)가 센서에 의해 감지한 제반 정보를 근거로 챔버(2)내의 압력을 조절하여, 배럴상부(B)내로 유입되는 연료량을 조절함으로써 엔진운전 조건 변화에 따라 신속하게 대처할 수 있어 엔진 출력 향상, 매연감소등 엔진성능 개선에 크게 기여할 수 있는 매우 유용한 고안인 것이다.As described above, the present invention adjusts the pressure in the chamber 2 based on the general information sensed by the pressure regulating valve 3 to adjust the amount of fuel flowing into the barrel upper part B, thereby changing the engine operating condition. Therefore, it is a very useful design that can contribute to the improvement of engine performance, such as improving the engine power and reducing the smoke, because it can be quickly responded.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92000333U KR940002809Y1 (en) | 1992-01-13 | 1992-01-13 | Auxiliary apparatus for electronic controlling of fuel ejecting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92000333U KR940002809Y1 (en) | 1992-01-13 | 1992-01-13 | Auxiliary apparatus for electronic controlling of fuel ejecting pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930018311U KR930018311U (en) | 1993-08-21 |
| KR940002809Y1 true KR940002809Y1 (en) | 1994-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR92000333U KR940002809Y1 (en) | 1992-01-13 | 1992-01-13 | Auxiliary apparatus for electronic controlling of fuel ejecting pump |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940002809Y1 (en) |
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1992
- 1992-01-13 KR KR92000333U patent/KR940002809Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR930018311U (en) | 1993-08-21 |
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