KR200204915Y1 - Pressure regulating valve of diesel fuel injection pump - Google Patents
Pressure regulating valve of diesel fuel injection pump Download PDFInfo
- Publication number
- KR200204915Y1 KR200204915Y1 KR2019970031656U KR19970031656U KR200204915Y1 KR 200204915 Y1 KR200204915 Y1 KR 200204915Y1 KR 2019970031656 U KR2019970031656 U KR 2019970031656U KR 19970031656 U KR19970031656 U KR 19970031656U KR 200204915 Y1 KR200204915 Y1 KR 200204915Y1
- Authority
- KR
- South Korea
- Prior art keywords
- regulating valve
- pressure regulating
- pump
- pressure
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1826—Discharge orifices having different sizes
-
- 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
- F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
- F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
- F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
- F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
- F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
본 고안은 디젤엔진의 분배형 연료분사펌프에서의 압력조정밸브 조절장치에 관한 것으로, 플러그와 스프링, 피스톤, 스프링 링을 압력조정밸브 본체내에 설치하고, 하측의 스프링 링과 피스톤 사이의 본체에 다수의 오리피스 구멍을 형성한 압력조정밸브에 있어서, 다수의 오리피스 구멍의 크기를 다르게 형성하여 펌프실압 특성을 자유롭게 변경할 수 있도록 구성한 것이다.The present invention relates to a pressure regulating valve regulating device in a diesel fuel pump of a diesel engine. A plug, a spring, a piston, and a spring ring are installed in a pressure regulating valve main body, In the pressure regulating valve formed in the orifice hole of the configuration, the size of the plurality of orifice holes are formed differently so that the pump actual pressure characteristic can be freely changed.
Description
본 고안은 디젤엔진의 분배형 연료분사펌프에서의 압력조정밸브 조절장치에 관한 것으로, 보다 상세하게는 압력조절밸브에 구성된 다수의 오리피스 구멍의 크기를 각기 다르게 형성 하므로서 디젤엔진의 분배형 연료분사펌프의 펌프실내의 압력을 항상 규정압력으로 유지할 수 있도록 한 디젤엔진의 분배형 연료분사펌프의 압력조정밸브에 관한 것이다.The present invention relates to a pressure regulating valve regulating device in a diesel fuel injection pump of a diesel engine. More specifically, the size of a plurality of orifice holes formed in the pressure regulating valve is formed differently, thereby distributing the fuel injection pump of a diesel engine. This invention relates to a pressure regulating valve for a fuel injection pump of a diesel engine, which maintains the pressure in the pump room at a constant pressure at all times.
디젤엔진의 분배형 연료분사펌프는 도 1의 도시와 같이 연료분사펌프의 회전수가 드라이브축(2)의 회전에 의해 구동되는 휘드펌프(3)의 작동으로 연료탱크로 부터 연료가 흡입되어 펌프하우징(4)내로 압송되므로 송유압력이 상승하게 된다.As shown in FIG. 1, the fuel injection pump of a diesel engine pumps fuel from the fuel tank by sucking the fuel from the fuel tank by the operation of the feed pump 3 in which the rotation speed of the fuel injection pump is driven by the rotation of the drive shaft 2. (4) As it is pumped in, oil supply pressure rises.
이 송유압력은 압력조정밸브(1)에 의해 적절히 제어되므로 펌프하우징(4)내에는 실압이 발생되는 것이다.Since this oil supply pressure is appropriately controlled by the pressure regulating valve 1, the actual pressure is generated in the pump housing 4.
특히, 펌프의 회전속도가 높아지고 휘드펌프(3)의 송유압력이 상승되면 압력조정밸브(1)의 스프링(12)을 압축하여 피스톤(13)을 밀어 올려서 연료를 휘드펌프(3)측으로 부터 흡입측으로 바이패스 시킴으로써 펌프회전 속도에 비례하는 펌프 실압이 얻어진다.In particular, when the rotational speed of the pump is increased and the oil supply pressure of the feed pump 3 is increased, the spring 12 of the pressure adjusting valve 1 is compressed to push up the piston 13 to suck the fuel from the feed pump 3 side. Bypassing to the side, a pump actual pressure proportional to the pump rotational speed is obtained.
이렇게 되어 실압이 타이머 스프링(5)의 셋팅력보다 크게 되면 타이머 피스톤(6)이 타이머 스프링(5)을 압축시키면서 좌측으로 이동하게 되는데, 이때 그 움직임은 핀(7)에 의해 로울러 홀더(8)에 전달되어, 이 로울러 홀더(8)를 드라이브축(2)의 회전방향과 반대방향으로 회전시켜 줌으로써 캠디스크(9)의 리프트 시기를 빠르게 하여 분사시기를 진각시켜 주는 것이다.Thus, when the actual pressure is greater than the setting force of the timer spring 5, the timer piston 6 moves to the left while compressing the timer spring 5, wherein the movement is applied to the roller holder 8 by the pin 7. The roller holder 8 is rotated in a direction opposite to the rotational direction of the drive shaft 2 to accelerate the lift timing of the cam disc 9 to advance the injection timing.
종래의 압력조정밸브(1)의 구성은 도 2 내지 도 3의 도시와 같이 압력조정밸브 본체(10)에 플러그(11), 스프링(12), 피스톤(13), 스프링링(14)이 구성되어 있고, 피스톤(15)과 스프링링(14)의 사이에 다수개의 같은 크기로 형성된 오리피스 구멍(15)이 구성되어, 펌프실압의 특성은 다수의 오리피스구멍(15)의 크기 및 갯수, 스프링(12)상수 등에 의해서 변경시킬 수 있고, 여러 종류의 압력조정밸브(1)의 사양이 설정되어 있다.The conventional pressure regulating valve 1 is composed of a plug 11, a spring 12, a piston 13, and a spring ring 14 in the pressure regulating valve body 10 as shown in FIGS. 2 to 3. A plurality of orifice holes 15 having the same size are formed between the piston 15 and the spring ring 14, and the characteristic of the pump actual pressure is characterized by the size and number of the orifice holes 15, the spring ( 12) It can be changed by a constant or the like, and specifications of various kinds of pressure regulating valves 1 are set.
그러나 상기와 같은 종래 압력조정밸브는 본체(10)의 피스톤(13)과 스프링링(14)사이에 형성된 오리피스구멍(15)이 동일한 위치에 동일한 크기(1.4Φ 내지 1.6Φ)로 가공하도록 되어 있으므로, 기존의 오리피스 구멍간의 중간특성을 갖는 압력조정밸브(1)의 사양설정이 어려운 문제점이 있었다.However, in the conventional pressure regulating valve as described above, the orifice hole 15 formed between the piston 13 and the spring ring 14 of the main body 10 is processed to the same position (1.4Φ to 1.6Φ) at the same position. There is a problem that the specification of the pressure regulating valve (1) having an intermediate characteristic between the existing orifice holes is difficult.
본 고안은 상기와 같은 문제점을 해결하기 위하여 압력조절밸브(1)에 형성된 오리피스 구멍의 크기를 가변적으로 적용시켜 펌프실압 특성을 자유롭게 변경할 수 있고, 최적의 압력조정밸브 사양 설정이 가능한 디젤엔진의 분배형 연료분사펌프의 압력조정밸브를 제공 함을 그 목적으로 한다.In order to solve the above problems, the present invention can freely change the pump pressure pressure characteristics by variably applying the size of the orifice hole formed in the pressure regulating valve (1), and the distribution of the diesel engine capable of setting the optimum pressure regulating valve specifications. It is an object to provide a pressure regulating valve for a fuel injection pump.
도 1 은 연료분사펌프의 단면 설명도.1 is a cross-sectional explanatory diagram of a fuel injection pump;
도 2 는 종래 압력조정밸브의 측단면도.Figure 2 is a side sectional view of a conventional pressure regulating valve.
도 3 은 종래 압력조정밸브의 평단면도.3 is a plan sectional view of a conventional pressure regulating valve.
도 4 는 본 고안 압력조정밸브의 평단면도.Figure 4 is a cross-sectional view of the subject innovation pressure control valve.
도 5 는 본 고안과 종래의 펌프실압 특성선도.5 is a schematic diagram of the present invention and the conventional pump pressure characteristic.
〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>
1 : 압력조정밸브 2 : 드라이브 샤프트1: Pressure regulating valve 2: Drive shaft
3 : 휘드펌프 4 : 펌프하우징3: pump pump 4: pump housing
5 : 타이머 스프링 6 : 타이머 피스톤5: timer spring 6: timer piston
7 : 핀 8 : 로울러 홀더7: pin 8: roller holder
9 : 캠디스크 10 : 압력조절밸브 본체9: Cam disk 10: Pressure regulating valve body
11 : 플러그 12 : 스프링11: plug 12: spring
13 : 피스톤 14 : 스프링 링13: piston 14: spring ring
15 : 오리피스 구멍15: orifice hole
이하 본 고안의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 4는 본 고안 압력조정밸브의 오리피스 구멍을 나타낸 평단면도로써, 플러그(11)와 스프링(12), 피스톤(13), 스프링 링(14)을 압력조정밸브 본체(10)내에 설치하고, 하측의 스프링 링(14)과 피스톤(13) 사이의 본체(10)에 다수의 오리피스 구멍(15)을 형성한 압력조정밸브에 있어서, 다수의 오리피스 구멍(15)의 크기를 다르게 형성하여 펌프실압 특성을 자유롭게 변경할 수 있도록 구성한 것이다.4 is a plan sectional view showing the orifice hole of the pressure regulating valve of the present invention. The plug 11, the spring 12, the piston 13, and the spring ring 14 are installed in the pressure regulating valve main body 10, In the pressure regulating valve in which a plurality of orifice holes 15 are formed in the main body 10 between the spring ring 14 and the piston 13, the pump chamber pressure characteristics are formed by varying the sizes of the plurality of orifice holes 15. It is configured to change freely.
상기와 같이 구성된 본 고안 디젤엔진의 분배형 연료분사펌프의 압력조정밸브의 작용을 보면, 도 5의 도시와 같이 펌프회전 속도에 비례하는 펌프실압이 압력조정밸브에 형성된 서로 다른 크기의 오리피스 구멍(15)에 의해 종래의 펌프실압특성(1)(2) 사이의 중간특성(3)을 나타내어 펌프실압특성을 보다 자유롭게 변경 할 수 있고, 최적의 압력조정밸브의 사양을 설정 할 수 있게 되었다.Referring to the operation of the pressure regulating valve of the distribution type fuel injection pump of the present invention diesel engine configured as described above, orifice holes of different sizes formed in the pressure regulating valve are pump actual pressure proportional to the pump rotational speed as shown in FIG. (15) shows the intermediate characteristics (3) between the conventional pump pressure characteristics (1) and (2), so that the pump pressure pressure characteristic can be changed more freely and the optimum pressure regulating valve specifications can be set.
상기와 같이 본 고안 디젤엔진의 분배형 연료분사펌프의 압력조정밸브는 압력조절밸브에 형성된 오리피스 구멍의 크기를 가변적으로 적용시켜 펌프실압 특성을 자유롭게 변경할 수 있고, 최적의 압력조정밸브 사양 설정이 가능한 효과가 있는 것이다.As described above, the pressure regulating valve of the distribution type fuel injection pump of the diesel engine of the present invention can freely change the pump actual pressure characteristic by variably applying the size of the orifice hole formed in the pressure regulating valve, and the optimum pressure regulating valve specification can be set. It works.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970031656U KR200204915Y1 (en) | 1997-11-11 | 1997-11-11 | Pressure regulating valve of diesel fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970031656U KR200204915Y1 (en) | 1997-11-11 | 1997-11-11 | Pressure regulating valve of diesel fuel injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19990018426U KR19990018426U (en) | 1999-06-05 |
| KR200204915Y1 true KR200204915Y1 (en) | 2001-03-02 |
Family
ID=53896622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019970031656U KR200204915Y1 (en) | 1997-11-11 | 1997-11-11 | Pressure regulating valve of diesel fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200204915Y1 (en) |
-
1997
- 1997-11-11 KR KR2019970031656U patent/KR200204915Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR19990018426U (en) | 1999-06-05 |
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