KR100270044B1 - Torque control device of injection pump - Google Patents

Torque control device of injection pump Download PDF

Info

Publication number
KR100270044B1
KR100270044B1 KR1019970040060A KR19970040060A KR100270044B1 KR 100270044 B1 KR100270044 B1 KR 100270044B1 KR 1019970040060 A KR1019970040060 A KR 1019970040060A KR 19970040060 A KR19970040060 A KR 19970040060A KR 100270044 B1 KR100270044 B1 KR 100270044B1
Authority
KR
South Korea
Prior art keywords
injection pump
fuel
torque
piston
torque control
Prior art date
Application number
KR1019970040060A
Other languages
Korean (ko)
Other versions
KR19990017221A (en
Inventor
김창일
Original Assignee
정몽규
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 정몽규, 현대자동차주식회사 filed Critical 정몽규
Priority to KR1019970040060A priority Critical patent/KR100270044B1/en
Publication of KR19990017221A publication Critical patent/KR19990017221A/en
Application granted granted Critical
Publication of KR100270044B1 publication Critical patent/KR100270044B1/en

Links

Images

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
    • 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
    • F02M41/14—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 rotary distributor supporting pump pistons
    • F02M41/1405—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 rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis
    • F02M41/1411—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 rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis characterised by means for varying fuel delivery or injection timing

Abstract

PURPOSE: A torque control device of an injection pump is provided to adjust fuel injection flow and torque properly according to fuel pressure by applying the internal pressure of a pump to a boost compensator of a mechanical injection pump, and to control the fuel amount according to rpm(revolutions per minute) by the injection pump with low cost. CONSTITUTION: A torque controller comprises a cylinder(61) applying the internal pressure of an injection pump(50); a piston(62) moving up and down according to the internal pressure of the injection pump in the cylinder, and having a curved torque control unit(62a) in the end; an adjustable spring(63) supplying elasticity to the piston; a return spring(64) installed in the front of the piston facing the adjustable spring to supply resilience; and a lever(65) moving along the curved surface of the torque control unit and adjusting the injection flow. The torque controller of the injection pump changes the fuel injection flow and the torque of the engine with increasing the fuel pressure of the injection pump according to the rpm of the engine, copes with the regulation on exhaust emission with the mechanical injection pump, and adjusts the fuel amount properly according to the rpm of the engine.

Description

인젝션 펌프의 회전수별 토크 조절 장치Torque control device by rotation speed of injection pump

본 발명은 소형 디젤 엔진에 구비되는 인젝션 펌프의 회전수별 토크 조절 장치에 관한 것으로서, 특히 엔진의 회전수에 따라 인젝션 펌프 내의 연료압이 상승되는 것을 이용하여 연료 분사량 및 엔진의 토크를 가변시킴으로써 기계식 인젝션 펌프로도 배기 가스 규제 대응이 용이해짐은 물론 분사 연료량 조절이 용이토록 한 인젝션 펌프의 회전수별 토크 조절 장치에 관한 것이다.The present invention relates to an apparatus for adjusting torque for each rotation speed of an injection pump provided in a small diesel engine. In particular, the mechanical injection is performed by varying the fuel injection amount and the torque of the engine by using the fuel pressure in the injection pump being increased according to the rotation speed of the engine. The present invention relates to a torque control device for each rotational speed of an injection pump, which facilitates the regulation of the exhaust gas as well as the injection fuel amount.

일반적으로 부스트 컴펜세이터는 터보 차저 부침 엔진에 장치되는 연료 분사량의 자동 조절 장치이며 과급기의 작용에 의해 엔진의 실린더로 보내지는 흡입공기량이 증가한 경우, 여기에 걸맞는 적정 분사량을 토출하여 연료의 완전연소와 출력 향상을 도모하기 위한 장치이다.In general, the boost compensator is an automatic control device for the fuel injection amount installed in the turbocharged engine, and when the amount of intake air sent to the cylinder of the engine is increased by the action of the supercharger, it discharges an appropriate injection amount suitable for this to completely burn the fuel. This is to improve the output power.

상기한 부스트 컴펜세이터는 도 1 및 도 2에 도시된 바와 같이 인젝션 펌프(1)의 거버너 상부에 장치되어 있는데, 흡기 매니폴드 내의 과급 공기(A)의 압력이 덮개(11)와 다이어프램(12) 사이의 가압실(P)로 도입되어 있으며, 가압 공기 압력이 상기 다이어프램(12) 하측에 조립되어 있는 장력 스프링(13)의 설정 하중보다 커지면 다이어프램(12) 및 조정 로드(14)를 아래쪽으로 이동시킨다.The boost compensator is installed on top of the governor of the injection pump 1 as shown in FIGS. 1 and 2, wherein the pressure of the boost air A in the intake manifold is covered by the cover 11 and the diaphragm 12. The diaphragm 12 and the adjusting rod 14 move downward when the pressurized air pressure is larger than the set load of the tension spring 13 assembled below the diaphragm 12. Let's do it.

이때, 상기 조정 로드(14)의 끝단부에는 테이퍼부(14a)가 형성되어 있으며, 이 테이퍼부(14a)와 접촉되어 있는 레버(15)의 움직임은 중심 지점(16)을 거쳐서 텐션 레버(17)로 전달되기 때문에 제어 슬리브(18)를 분사량 증가 방향으로 이동시킨다.At this time, a tapered portion 14a is formed at the end of the adjusting rod 14, and the movement of the lever 15 in contact with the tapered portion 14a is carried out through the center point 16 and the tension lever 17. ), The control sleeve 18 is moved in the direction of increasing the injection amount.

여기서, 상기와 같은 인젝션 펌프는 도 3에 도시된 바와 같이 엔진의 회전수에 따라 내부 연료압이 상승되나, 연소실에 분사되는 연료량은 도 4에 도시된 바와 같이 상기 부스트 컴펜세이터에 작용되는 흡입 공기량 및 테이퍼부(14a)의 형상에 의해 영향을 받게 된다.Here, the injection pump as described above, the internal fuel pressure is increased according to the number of revolutions of the engine as shown in Figure 3, the amount of fuel injected into the combustion chamber is applied to the boost compensator as shown in Figure 4 The amount of air and the shape of the tapered portion 14a are affected.

즉, 부스트 컴펜세이터의 가압실(P)로 도입되는 흡입 공기량에 따라 상기 조정 로드(14)가 이동되고, 이때 테이퍼부(14A)의 형상에 따라 레버(15)가 회동되면서 연료 분사량이 조정되게 된다.That is, the adjustment rod 14 is moved in accordance with the amount of intake air introduced into the pressurizing chamber P of the boost compensator. At this time, the fuel injection amount is adjusted while the lever 15 is rotated according to the shape of the tapered portion 14A. Will be.

그러나, 상기와 같은 종래의 인젝션 펌프는 회전수별 연료량 변화가 극히 제한되어 있으므로 점차 강화되는 디젤 엔진의 배기 가스 규제에 만족스럽게 대응치못함은 물론 회전수에 따른 적정한 엔진 출력 및 토크 변화도 갖기 어려운 문제점이 있다.However, the conventional injection pump as described above has a very limited change in the amount of fuel for each revolution, so that it is difficult to satisfactorily cope with the exhaust gas regulation of the diesel engine, which is gradually strengthened, and it is difficult to have a proper engine output and torque change according to the rotation speed. There is this.

그리고, 상기와 같은 기계식 인젝션 펌프의 단점을 보완하기 위해 전자식 인젝션 펌프가 사용되고 있으나 이는 가격이 대폭 상승되는 문제점이 있다.In addition, the electronic injection pump is used to compensate for the disadvantages of the mechanical injection pump as described above, but there is a problem that the price is greatly increased.

본 발명은 상기한 문제점을 해결하기 위해 안출된 것으로서, 기계식 인젝션 펌프의 부스트 컴펜세이터에 펌프 내압을 도입시켜 회전수별 연료압에 따라 연료분사량 및 토크가 적정하게 변화되게 함으로써 기계식 인젝션 펌프로도 저비용으로 회전수에 따른 연료량 제어가 용이토록 한 인젝션 펌프의 회전수별 토크 조절 장치를 제공하는 데 있다.The present invention has been made to solve the above problems, by introducing the internal pressure of the pump to the boost compensator of the mechanical injection pump to change the fuel injection amount and torque according to the fuel pressure for each revolution number to low cost even as a mechanical injection pump Accordingly, the present invention provides a torque control device for each rotational speed of an injection pump to facilitate fuel amount control according to the rotational speed.

제1도는 종래 인젝션 펌프의 부스트 컴펜세이터가 도시된 단면도.1 is a cross-sectional view illustrating a boost compensator of a conventional injection pump.

제2도는 종래기술에서 부스트 컴펜세이터의 작동 상태도.2 is an operational state diagram of a boost compensator in the prior art.

제3도는 엔진 회전수에 따른 인젝션 펌프 내의 연료압 변화 그래프.3 is a graph of fuel pressure change in the injection pump according to the engine speed.

제4도는 종래 기술에서 엔진 회전수에 따른 연료 분사량 변화 그래프.4 is a graph of fuel injection amount change according to engine speed in the prior art.

제5도는 본 발명에 따른 인젝션 펌프의 회전수별 토크 조절 장치가 도시된 단면도.Figure 5 is a cross-sectional view showing a torque control device for each rotation of the injection pump according to the present invention.

제6도는 본 발명의 주요부 작동 상태도.6 is an essential part operating state diagram of the present invention.

제7도는 본 발명에서 엔진 회전수에 따른 연료 분사량 변화를 나타낸 일 실시예의 그래프이다.7 is a graph of one embodiment showing a change in fuel injection amount according to the engine speed in the present invention.

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

50 : 인젝션 펌프 61 : 실린더50: injection pump 61: cylinder

62 : 피스톤 62a : 토크 조절부62: piston 62a: torque adjustment unit

63 : 조절 스프링 64 : 리턴 스프링63: adjustment spring 64: return spring

65 : 레버 66 : 유입 통로65 lever lever 66 inflow passage

67 : 배출 통로67 discharge passage

상기한 과제를 실현하기 위한 본 발명의 인젝션 펌프의 회전수별 토크 조절장치는, 인젝션 펌프로부터 연료압이 전달되도록 연결되는 실린더와, 상기 실린더에 내재되어 인젝션 펌프내의 연료압에 따라 상하 이동되고 끝단부에 곡면 형상의 토크 조절부가 형성된 피스톤과, 상기 피스톤의 전방에 설치되어 연료압과 대향되게 탄성력을 제공하는 리턴 스프링과, 상기 피스톤의 토크 조절부의 곡면을 따라 회동되면서 분사 연료량을 조절토록 하는 레버로 구성된 것을 특징으로 한다.The rotation speed torque adjusting device of the injection pump of the present invention for realizing the above object is a cylinder which is connected so that the fuel pressure is transmitted from the injection pump, and is moved up and down in accordance with the fuel pressure in the injection pump in the cylinder and the end A piston having a curved torque control portion at the front, a return spring installed at the front of the piston to provide an elastic force to face the fuel pressure, and a lever for rotating the amount of injected fuel while rotating along the curved surface of the torque control portion of the piston. Characterized in that configured.

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.

본 발명에 의한 인젝션 펌프의 회전수별 토크 조절 장치는 도 5 및 도 6에 도시된 바와 같이 종래 기술의 부스트 컴펜세이터 위치에 설치되는데, 인젝션 펌프(50)의 내부 연료압이 작용되는 실린더(61)와, 상기 실린더(61)에 내재되어 인젝션 펌프(50)내의 연료압에 따라 상하 이동되고 끝단부에 곡면 형상의 토크 조절부(62a)가 형성된 피스톤(62)과, 상기 피스톤(62)에 탄성력을 제공하는 조절 스프링(63)과, 상기 조절 스프링(63)과 대향되는 피스톤(62)의 전방에 설치되어 탄성력을 제공하는 리턴 스프링(64)과, 상기 피스톤(62)의 토크 조절부(62a)의 곡면을 따라 회동되면서 분사 연료량을 조절토록 하는 레버(65)로 구성된다.Torque-specific torque control device of the injection pump according to the present invention is installed in the boost compensator position of the prior art as shown in Figures 5 and 6, the cylinder 61 to which the internal fuel pressure of the injection pump 50 is applied ), A piston (62) inherent in the cylinder (61) and vertically moved in accordance with the fuel pressure in the injection pump (50), and having a curved torque adjusting portion (62a) at the end thereof, and in the piston (62). An adjustment spring 63 providing an elastic force, a return spring 64 provided in front of the piston 62 opposite to the adjustment spring 63 to provide an elastic force, and a torque adjusting portion of the piston 62 And a lever 65 that rotates along the curved surface of 62a to adjust the amount of injected fuel.

그리고, 상기 실린더(61)는 상기 피스톤(62)의 후방측에 인젝션 펌프(50)내의 연료를 가압할 수 있도록 유입 통로(66)가 연결되고, 상기 피스톤(62)이 연료압에 의해 일정 이상 이동되었을 때 연료가 배출되도록 배출 통로(67)가 연결되어 있다.In addition, the cylinder 61 is connected to the inflow passage 66 so as to pressurize the fuel in the injection pump 50 to the rear side of the piston 62, the piston 62 is a predetermined or more by the fuel pressure A discharge passage 67 is connected to discharge fuel when moved.

특히, 상기 피스톤(62)은 도 7에서와 같이 엔진 회전수에 따른 적정 분사 연료량의 학습치의 의해 상기 토크 조절부(62a)의 곡면이 형성되는 것이 바람직하다. 즉, 상기 토크 조절부(62a)의 곡면 형상은 엔진의 회전수별로 엔진의 출력이나 배기 가스 배출 상태 등을 시험하여 가장 적정한 연료 분사량을 산출하고, 이에 따라 곡면의 형상을 형성할 수 있다.In particular, it is preferable that the piston 62 has a curved surface of the torque adjusting part 62a by learning values of the appropriate amount of injection fuel according to the engine speed as shown in FIG. 7. That is, the curved shape of the torque adjusting part 62a may be configured to test the output of the engine, the exhaust gas discharge state, etc. for each engine speed, and calculate the most appropriate fuel injection amount, thereby forming the curved shape.

상기와 같이 구성되는 본 발명에 다른 인젝션 펌프의 회전수별 토크 조절 장치의 작용을 설명하면 다음과 같다.Referring to the operation of the torque control device for each rotation speed of the injection pump in the present invention configured as described above are as follows.

엔진의 회전수가 높아지면 인젝션 펌프(50)내의 연료압도 상승하게 되고, 이 연료압이 유입 통로(66)를 통해 실린더(61)로 유입된다. 이때 실린더(61) 내의 피스톤(62)은 연료압에 의해 리턴 스프링(64)의 탄성력을 이기고 하측으로 이동하게 되고, 동시에 토크 조절부(62a)에 접촉되어 있는 레버(65)가 회동되면서 연료 분사량을 증감시키게 된다.As the engine speed increases, the fuel pressure in the injection pump 50 also increases, and the fuel pressure flows into the cylinder 61 through the inflow passage 66. At this time, the piston 62 in the cylinder 61 moves downward under the elastic force of the return spring 64 by the fuel pressure, and at the same time, the fuel injection amount is rotated while the lever 65 in contact with the torque control unit 62a is rotated. Will increase or decrease.

여기서, 상기 실린더(61)로 도입되는 연료압이 일정 이상이 되어 피스톤(62)의 이동한계치에 도달되면 배출 통로(67)가 개방되면서 연료는 인젝션 펌프(50) 내로 회송하게 된다.Here, when the fuel pressure introduced into the cylinder 61 reaches or exceeds a certain limit and reaches the limit of movement of the piston 62, the discharge passage 67 is opened, and the fuel is returned into the injection pump 50.

또한, 엔진의 회전수가 낮아져서 인젝션 펌프(50) 내의 연료압이 떨어지면 피스톤(62)은 리턴 스프링(64)에 밀려 상측으로 이동되고, 이때에도 토크 조절부 (62a)와 레버(65)의 접촉으로 연료 분사량이 조정된다.In addition, when the engine speed decreases and the fuel pressure in the injection pump 50 drops, the piston 62 is pushed upward by the return spring 64. At this time, the piston adjuster 62a is brought into contact with the lever 65. The fuel injection amount is adjusted.

따라서, 엔진 회전수 및 인젝션 펌프(50)의 내압에 의해 토크 조절부(62a)가 이동하면 레버(65)가 곡면을 따라 회동되면서 도 7과 같은 회전수 대비 분사 연료량 곡선을 갖게 되므로 엔진의 회전수에 따라 최적의 연료가 분사되게 된다.Therefore, when the torque control unit 62a is moved by the engine speed and the internal pressure of the injection pump 50, the lever 65 is rotated along the curved surface to have the injection fuel amount curve as shown in FIG. Depending on the number, the optimum fuel is injected.

상기와 같이 구성되고 작용하는 본 발명에 의한 인젝션 펌프의 회전수별 토크 조절 장치는 엔진의 회전수에 따라 인젝션 펌프 내의 연료압이 상승되는 것을 이용하여 연료 분사량 및 엔진의 토크를 가변시키기 때문에 기계식 인젝션 펌프로도 배기 가스 규제 대응이 용이해짐은 물론 엔진 회전수에 따라 연료량이 적정하게 조절되는 이점이 있다.Mechanical injection pump because the torque control device for each rotation speed of the injection pump according to the present invention configured and acts as described above to vary the fuel injection amount and the torque of the engine by using the fuel pressure in the injection pump is increased in accordance with the engine speed In addition, it is easy to cope with exhaust gas regulation, and the amount of fuel is appropriately adjusted according to the engine speed.

Claims (3)

인젝션 펌프로부터 연료압이 전달되도록 연결되는 실린더와, 상기 실린더에 내재되어 인젝션 펌프내의 연료압에 따라 상하 이동되고 끝단부에 곡면 형상의 토크 조절부가 형성된 피스톤과, 상기 피스톤의 전방에 설치되어 연료압과 대향되게 탄성력을 제공하는 리턴 스프링과, 상기 피스톤의 토크 조절부의 곡면을 따라 회동되면서 분사 연료량을 조절토록 하는 레버로 구성된 것을 특징으로 하는 인젝션 펌프의 회전수별 토크 조절 장치.A cylinder connected to transfer the fuel pressure from the injection pump, a piston inherent in the cylinder to move up and down in accordance with the fuel pressure in the injection pump, and a curved torque control part formed at an end thereof; And a return spring that provides an elastic force opposite to and a lever that rotates along the curved surface of the torque control unit of the piston to adjust the injection fuel amount. 제1항에 있어서, 상기 실린더는 상기 피스톤의 후방측에 인젝션 펌프내의 연료를 가압할 수 있도록 유입 통로가 연결되고, 상기 피스톤이 연료압에 의해 일정 이상 이동되었을때 연료가 배출되도록 배출 통로가 연결된 것을 특징으로 하는 인젝션 펌프의 회전수별 토크 조절 장치.According to claim 1, wherein the cylinder is connected to the inlet passage to pressurize the fuel in the injection pump on the rear side of the piston, the discharge passage is connected so that the fuel is discharged when the piston is moved over a certain amount by the fuel pressure Torque-specific torque control device of the injection pump, characterized in that. 제1항에 있어서, 상기 피스톤은 엔진 회전수별 적정 토크량의 학습치에 따라 상기 토크 조절부의 곡면이 형성된 것을 특징으로 하는 인젝션 펌프의 회전수별 토크 조절 장치.The torque control device according to claim 1, wherein the piston has a curved surface of the torque control unit according to a learning value of an appropriate torque amount for each engine revolution.
KR1019970040060A 1997-08-22 1997-08-22 Torque control device of injection pump KR100270044B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019970040060A KR100270044B1 (en) 1997-08-22 1997-08-22 Torque control device of injection pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019970040060A KR100270044B1 (en) 1997-08-22 1997-08-22 Torque control device of injection pump

Publications (2)

Publication Number Publication Date
KR19990017221A KR19990017221A (en) 1999-03-15
KR100270044B1 true KR100270044B1 (en) 2000-10-16

Family

ID=19518127

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970040060A KR100270044B1 (en) 1997-08-22 1997-08-22 Torque control device of injection pump

Country Status (1)

Country Link
KR (1) KR100270044B1 (en)

Also Published As

Publication number Publication date
KR19990017221A (en) 1999-03-15

Similar Documents

Publication Publication Date Title
US5150677A (en) Direct injection diesel engine
US5794600A (en) Internal combustion engine control
EP2024628B1 (en) Method for controlling a fuel valve and/or an air valve for an internal combustion engine
KR100270044B1 (en) Torque control device of injection pump
JPH04311626A (en) New charge device of internal combustion engine with supercharger
JP2554625B2 (en) Fuel supply device for internal combustion engine with turbocharger
JPS636733B2 (en)
JP2669820B2 (en) Method and fuel injector for controlling fuel distribution in a combustion chamber of an internal combustion engine
KR0136980Y1 (en) Electronic injector ofa diesel engine
JPH0441225Y2 (en)
KR100423292B1 (en) Method for optimum injected fuel of vehicle
JP2580845B2 (en) Fuel injection device
KR960002023Y1 (en) Injecting controller for fuel ejecting pump
KR960006020Y1 (en) Exhaust gas reduction apparatus of turbo diesel engine
KR19980060479A (en) Governor of fuel injection pump
JPS58140433A (en) Controller for cooling water temperature of fuel injection type exhaust gas supercharged internal-combustion engine
JPH07189747A (en) Fuel injection device for diesel engine
JPH08507845A (en) Fuel injection device for internal combustion engine
JPS61250363A (en) Control device for fuel in engine
JPH04112928A (en) Fuel injection quantity control device for diesel engine
JPS5862314A (en) Suction device of engine with supercharger
JPS63259127A (en) Fuel flow regulating and supply device for gasoline injection engine
KR19980044456A (en) Low speed characteristics improvement device of turbocharger engine
JPS6073018A (en) Fuel injection pump for diesel engine
JPH08284781A (en) Controller for fuel injection pump

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20030714

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee