KR890006050Y1 - Advance restrict device of timer for diesel engine - Google Patents
Advance restrict device of timer for diesel engine Download PDFInfo
- Publication number
- KR890006050Y1 KR890006050Y1 KR2019860019598U KR860019598U KR890006050Y1 KR 890006050 Y1 KR890006050 Y1 KR 890006050Y1 KR 2019860019598 U KR2019860019598 U KR 2019860019598U KR 860019598 U KR860019598 U KR 860019598U KR 890006050 Y1 KR890006050 Y1 KR 890006050Y1
- Authority
- KR
- South Korea
- Prior art keywords
- timer
- advance
- stud bolt
- fly
- diesel engine
- Prior art date
Links
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000000446 fuel Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008571 general function Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
-
- 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
- F02D2001/0005—Details, component parts or accessories of centrifugal governors
- F02D2001/001—Arrangement of centrifugal weights
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
내용 없음.No content.
Description
제1도는 타이머가 내설된 하우징이 연료 압축 분사 펌프와 결합 설치된 상태의 측면도.1 is a side view of a housing in which a timer is installed and coupled with a fuel compression injection pump.
제2도는 본 고안에 의한 진각 한정 장치가 부설된 타이머 정면도.Figure 2 is a front view of the timer attached to the advance limiting device according to the present invention.
제3도는 종래 고안이 부설된 타이머 정면도.Figure 3 is a front view of the timer laid conventionally.
제4(a)도는 종래 타이머의 작동 곡선도, 제4(b)도는 본 고안에 따른 타이머의 작동 곡선도.4 (a) is an operating curve of the conventional timer, Figure 4 (b) is an operating curve of the timer according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 플라이 웨이트 2 : 베어링 핀1: fly weight 2: bearing pin
3 : 하우징 6 : 스터드볼트3: housing 6: stud bolt
7 : 너트7: nut
본 고안은 디젤엔진의 연료분사펌프와 연계 동작되면서 엔진의 회전속도에 따라 연료분사시기를 가변 조정해주는 타이머의 진각 한정 장치에 관한 것이다.The present invention relates to a timer limiting device of a timer that operates in conjunction with a fuel injection pump of a diesel engine and variably adjusts the fuel injection timing according to the rotational speed of the engine.
타이머의 일반적인 기능을 살펴보면, 연료 분사펌프의 구동으로 플린저실에서 발생한 압력은 압력파가 되어, 고속으로 분사관 안으로 전달되어 노즐에 도달한다.Looking at the general function of the timer, the pressure generated in the plunger chamber by the driving of the fuel injection pump is a pressure wave, it is transmitted into the injection pipe at high speed to reach the nozzle.
노즐에서 분사된 연료는 착화지연시간을 거친후 착화 연소한다.Fuel injected from the nozzle is ignited and burned after passing the ignition delay time.
압력파가 분사관 안에서 전달하는 시간은 기관의 회전속도에 따라서는 그다지 변하지 않으나, 착화지연 시간의 크랭크 선회각도는 고속으로 될수록 커진다.The time the pressure wave propagates in the injection tube does not change much depending on the engine rotational speed, but the crank turn angle of the ignition delay time increases as the speed increases.
즉, 착화시간으로는 고속쪽이 짧아지나, 크랭크 각도로 볼때는 커지기 때문에 플런저실의 압력발생 시각부터 착화하기까지 회전하는 크랭크 각도는 고속으로 될수록 커진다.That is, the high speed side becomes shorter in the ignition time, but becomes larger in view of the crank angle, so that the crank angle that rotates from the pressure generation time of the plunger chamber to the ignition becomes larger as the speed becomes higher.
이 때문에 어느회전 각도에 대해서도 착화시키기를 일정하게 하여 가장 적합한 연소상태가 되도록, 고속에서의 분사시기 즉, 분사펌프에 압력이 발생하는 시기를 기관의 크랭크 각도에 대해 마르게 할 필요가 있다.For this reason, it is necessary to dry the injection timing at high speed, that is, the time when pressure is generated in the injection pump, with respect to the crank angle of the engine so as to make the ignition constant at any rotational angle to obtain the most suitable combustion state.
이 기관과 분사펌프의 구동축간의 위상을 바꾸어 회전속도가 빨라지면 분사시기를 빠르게 하고, 속도가 떨어지면 분사시기를 늦추게 하는 것이 바로 타이머이다.It is the timer that changes the phase between the engine and the driving shaft of the injection pump to speed up the injection timing when the rotation speed increases and to delay the injection timing when the speed drops.
또한, 타이머는 구동방식에 따라, 기관의 구동축(Drive Shaft)선단에 부착되어 커플링에 의해 구동되는 외장형과, 타이머에 기어가 부착되어 기관쪽의 기어와 직접 물려 구동되는 내장형이 있으며, 외장형의 구조를 간단히 살펴보면, 원호형 곡면을 가지는 1쌍의 플라이 웨이트(1)가 각기 하우징(3)의 내부 양측에 일측단부위를 관통한 베어링 핀(2)으로서 대칭으로 선회 자재토록 설치되고, 각각의 플라이 웨이트(1)에는 타이머 스프링이 설치되었으며, 상기 하우징(3)은 플라이 웨이트 홀더(4)와 결합된 상태로 연료 분사 펌프(5)의 캠 샤프트에 고정 결합되고, 구동축의 선단부에는 상기 플라이 웨이트 홀더와 결합 구동될 커플링이 결합 설치되므로서, 기관의 회전을 분사펌프에 전달시 그 원주속도에 따라 하우징(3)내에 설치된 플라이 웨이트(1)가 진각운동으로 연료펌프의 분사시기가 자동으로 가변 조정되는 것이다.In addition, according to the driving method, the timer has an external type that is attached to the end of the drive shaft of the engine and is driven by a coupling, and an internal type that is geared to the timer and directly driven by the gear on the engine side. Looking at the structure briefly, a pair of fly weights 1 having an arcuate curved surface are symmetrically installed as bearing pins 2 penetrating one end portion on both sides of the housing 3, respectively. The fly weight 1 is provided with a timer spring, and the housing 3 is fixedly coupled to the cam shaft of the fuel injection pump 5 in a state of being coupled with the fly weight holder 4, and at the tip of the drive shaft, the fly weight Since the coupling to be coupled and driven to the holder is installed, the flyweight 1 installed in the housing 3 is subjected to the forward movement according to its circumferential speed when the rotation of the engine is transmitted to the injection pump. The injection timing of the fuel pump will be automatically adjusted to the variable.
여기에서, 베어링 핀(2)을 중심으로 진각운동되는 플라이 웨이트(1)는 별도의 장치를 이용하여 진각의 최대치를 한정하게 되는바, 종래의 진각 한정 장치를 보면 도면 제3도에서와 같이, 플라이 웨이트(1)의 일측단 외주면에 소정길이의 원형봉(10)을 압입시켜 주므로서, 상기 원형봉(10)의 상단부위가 하우징(3)의 내측면과 접하여 플라이 웨이트의 진각이 한정되도록 해왔다.Here, the flyweight 1, which is advancing about the bearing pin 2, defines the maximum value of the angle of advance using a separate device. As shown in FIG. By pressing the circular rod 10 of a predetermined length into the outer peripheral surface of one side end of the fly weight 1, the upper end portion of the circular rod 10 is in contact with the inner surface of the housing 3 so that the true angle of the fly weight is limited. Have been.
그런데, 상기와 같은 원형봉(10)은 항상 그 길이가 고정되는 관계로, 고속부분에서의 타이머 진각 회전수의 변화를 줄 수 없으며, 엔진의 성능 개발을 위해 타이머의 진극특성을 수시로 바꾸어야 할 경우, 그때마다 다른 길이의 원형봉을 교체 삽입시켜야 하므로, 그 교체 설치 작업이 매우 불편하고 번거로우며, 힘이드는 문제점이 있었다.By the way, the circular rod 10 as described above is always fixed in length, it is not possible to give a change in the number of revolutions of the timer in the high speed portion, if the time-changing characteristics of the timer must be changed from time to time to develop the engine performance To replace the circular rods of different lengths each time, the replacement installation work is very inconvenient and cumbersome, and there is a problem with the force.
따라서, 본 고안은 종래의 상기와 같은 문제점을 해결하기 위하여 상기 고정식 원형봉을 배제하고 스터트 볼트와 너트를 결합시켜, 필요시 간편하게 길이를 가변 시킬 수 있도록 한 것으로서, 이를 첨부된 도면을 따라 상세히 설명하면 다음과 같다.Therefore, in order to solve the problems as described above, the present invention excludes the fixed round bar and combines the stud bolt and the nut, so that the length can be easily changed if necessary, according to the accompanying drawings. The explanation is as follows.
즉, 연료분사펌프(5) 전방의 웨이트홀더(4)에 고정 부착된 하우징(3) 내부 양측에는 일측이 베어링 핀(2)에 의해 진각 운동되는 1쌍의 플라이 웨이트(1)가 각기 대항 형태로 설치된 통상의 것에 있어서, 도면 제2도에서와 같이 상기 플라이 웨이트(1)의 말단부의 외주면에는 소정 길이의 스터드볼트(6)를 나사 결합시키되, 상기 스터드볼트(6)와 플라이 웨이트(1) 사이에 볼트의 풀림 방지용 너트(7)를 결합시켜서 된 것이다.That is, on both sides of the housing 3 fixedly attached to the weight holder 4 in front of the fuel injection pump 5, a pair of fly weights 1, each of which has a forward movement by the bearing pin 2, face each other. In the conventional installation, as shown in Figure 2, the outer peripheral surface of the distal end portion of the fly weight 1 is screwed with a stud bolt 6 of a predetermined length, the stud bolt 6 and the fly weight (1) It is made by coupling the nut 7 for preventing loosening of a bolt.
이상과 같이 구성된 본 고안은, 상기 플라이 웨이트(1)에 나사 결합된 스터드볼트(6)를 정 또는 역방향으로 회전시킴에 따라 외곽 돌출 길이가 가변되면서, 플라이 웨이트(1)의 진각이 가변되는 것이며, 너트(7)는 한번 셋팅된 스터드볼트(6)가 작동중 풀림작용으로 길이가 변화되는 것을 방지해 주는 것이다.The present invention configured as described above, the outer protrusion length is variable by rotating the stud bolt 6 screwed to the fly weight (1) in the forward or reverse direction, the true angle of the fly weight (1) is variable The nut 7 prevents the stud bolt 6, once set, from changing in length due to loosening during operation.
따라서, 도면 제4(a)도는 종래 길이 고정식 진각 한정 장치 사용시의 타이머 곡선도로서 항상 일정한 진각을 유지하게 되는 반면, 본원 고안은 제4(b)도에서와 같이 스터드볼트(6)를 조이거나 풀어줌에 따라 그 길이가 가변되면서 진각이 가변됨을 나타내고 있는 것이다.Accordingly, while FIG. 4 (a) is a timer curve diagram of the conventional length-fixed advance limiting device, a constant progression is always maintained, while the present invention is designed to tighten the stud bolt 6 as shown in FIG. 4 (b). Its length is variable as it is released, indicating that the true angle is variable.
이상과 같이 구성되고 작동되는 본 고안은, 진각 한정장치의 구성을 종래의 길이 고정 방식에서 스터드볼트(6)와 너트(7)를 이용한 길이 가변식으로 개선하여, 타이머의 진각특성을 바꾸고져 할때에는 상기 스터드볼트만을 정 또는 역방향으로 회전시켜 주면 되는 것으로서, 그 조작이 매우 간편하고 수월하며, 보다 적은 힘으로 진각 회전수 조정을 자유로이 할 수 있는 등의 특출한 효과가 있는 것이다.The present invention constructed and operated as described above improves the configuration of the advance limiting device to a variable length using the stud bolt 6 and the nut 7 in the conventional length fixing method, thereby changing the advance characteristic of the timer. In this case, only the stud bolts need to be rotated in the forward or reverse direction, the operation is very simple and easy, and there is an extraordinary effect such that the advance rotation speed can be freely adjusted with less force.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860019598U KR890006050Y1 (en) | 1986-12-08 | 1986-12-08 | Advance restrict device of timer for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860019598U KR890006050Y1 (en) | 1986-12-08 | 1986-12-08 | Advance restrict device of timer for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR880012421U KR880012421U (en) | 1988-08-27 |
| KR890006050Y1 true KR890006050Y1 (en) | 1989-09-11 |
Family
ID=19257769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860019598U KR890006050Y1 (en) | 1986-12-08 | 1986-12-08 | Advance restrict device of timer for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR890006050Y1 (en) |
-
1986
- 1986-12-08 KR KR2019860019598U patent/KR890006050Y1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| KR880012421U (en) | 1988-08-27 |
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