KR200144024Y1 - Fuel injection device equipped with the electronic valve for a diesel engine - Google Patents
Fuel injection device equipped with the electronic valve for a diesel engine Download PDFInfo
- Publication number
- KR200144024Y1 KR200144024Y1 KR2019960035251U KR19960035251U KR200144024Y1 KR 200144024 Y1 KR200144024 Y1 KR 200144024Y1 KR 2019960035251 U KR2019960035251 U KR 2019960035251U KR 19960035251 U KR19960035251 U KR 19960035251U KR 200144024 Y1 KR200144024 Y1 KR 200144024Y1
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- South Korea
- Prior art keywords
- solenoid valve
- fuel
- high pressure
- nozzle holder
- injection
- Prior art date
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Classifications
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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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/027—Injectors structurally combined with fuel-injection pumps characterised by the pump drive electric
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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
- 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
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
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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
- 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)
- Fuel-Injection Apparatus (AREA)
Abstract
본 고안은 디젤엔진용 연료분사장치에 관한 것으로, 인젝션 펌프와 피드펌프, 노즐홀더, 연료탱크, 오버플로우를 연결 구성한 디젤엔진용 연료분사장치에 있어서, 캠과 캠플로워, 플런저리턴스프링, 플런저, 고압챔버, 딜리버리밸브를 하우징내에 설치하고 플런져부의 일측에 연료흡입포트를 축설하여 구성한 인젝션펌프를, 솔레노이드 밸브측 퇴유로와 연료탱크측 퇴유로를 구비한 노즐홀더의 고압 연료 송유로와 연결 구성하되, 인젝션 펌프와 노즐홀더를 연결한 인젝션 라인상에 제어포트와 스테이터, 아마츄어, 솔레노이드밸브, 스토퍼로 구성된 전자제어식 솔레노이드 밸브를 솔레노이드 밸브의 축소경에 구성된 챔버에, 인젝션 펌프와 노즐홀더를 연결한 인젝션 라인과 솔레노이드 밸브측 고압로를 구성하여 연결하고, 하부의 퇴유로는 외부로 노즐측 퇴유로를 돌출 형성하여 노즐 홀더의 솔레노이드 밸브측 퇴유로와 연결 구성하여, 솔레노이드밸브가 닫혀 있을 시에는 고압이 노즐홀더의 고압연료 송유로측으로 유입되고, 열려 있을 시에는 고압이 노즐홀더의 솔레노이드 밸브측 퇴유로로 유입됨을 특징으로 하는 전자제어밸브가 부착된 디젤엔진용 연료분사장치.The present invention relates to a fuel injection device for a diesel engine, in a fuel injection device for a diesel engine comprising an injection pump, a feed pump, a nozzle holder, a fuel tank, and an overflow, a cam, a cam follower, a plunger return spring, a plunger, An injection pump with a high pressure chamber and a delivery valve installed in the housing and a fuel intake port built up on one side of the plunger portion is connected to the high pressure fuel flow path of the nozzle holder having the solenoid valve side discharge path and the fuel tank side discharge path. On the injection line connecting the injection pump and the nozzle holder, an electronically controlled solenoid valve consisting of a control port, a stator, an amateur, a solenoid valve and a stopper is connected to a chamber formed on the shaft of the solenoid valve, and the injection pump and the nozzle holder are connected. The injection line and the solenoid valve side high pressure path are configured and connected. When the solenoid valve is closed, high pressure flows into the high pressure fuel flow path of the nozzle holder, and when open, the high pressure flows into the nozzle holder. A fuel injection device for a diesel engine with an electronic control valve, characterized in that the solenoid valve flows into the discharge path.
Description
본 고안은 디젤엔진용 연료분사장치에 관한 것으로, 보다 상세하게는 연료분사장치의 가버너와 타이머를 제거하며, 인젝션펌프의 플런져에 리이드와 하우징부의 콘트롤랙을 제거하고 인젝션 라인에 전자제어식 솔레노이드 밸브를 설치하므로서 구조를 간단히 하며, 정밀제어가 가능토록 한 전자제어밸브가 부착된 디젤엔진용 연료분사장치에 관한 것이다.The present invention relates to a fuel injection device for a diesel engine, and more particularly, to remove the governor and the timer of the fuel injection device, to remove the lead and the control rack of the housing part from the plunger of the injection pump, and to the injection line an electronically controlled solenoid valve. The present invention relates to a fuel injection device for a diesel engine equipped with an electronic control valve that simplifies the structure and permits precise control.
종래의 디젤엔진용 연료분사장치는 도 1 및 도 2 의 도시와 같이 타이머(50)측에서 엔진의 구동력을 전달받아 인젝션 펌프(51)내의 캠(1)을 구동시키고, 이는 플런져(3)와 연동된 캠플로워(2)를 왕복 운동시켜 플런져(3)가 상승하면서 고압챔버(7)내의 연료를 압축시키고, 그 압축력에 의해 딜리버리 밸브(6)을 밀어올리며, 인젝션 라인(54)으로 압축력이 전달되고 노즐 홀더(57)까지 전달되어 노즐내의 압력이 개변압을 이기면 디젤엔진내의 연소실로 연료가 분사된다.A conventional fuel injection device for a diesel engine receives the driving force of the engine from the timer 50 side as shown in FIGS. 1 and 2 to drive the cam 1 in the injection pump 51, which is the plunger 3. Compresses the fuel in the high pressure chamber (7) while the plunger (3) is raised by reciprocating the cam follower (2) interlocked with each other, and pushes the delivery valve (6) by the compression force to the injection line (54). When the compressive force is transmitted and transmitted to the nozzle holder 57 so that the pressure in the nozzle overcomes the opening pressure, fuel is injected into the combustion chamber in the diesel engine.
이 과정에서 연료의 분사량을 콘트롤랙(4)으로 제어하게 되며 콘트롤랙(4)은 도 3 의 도시와 같은 가버너내의 링크장치로 플라이 웨이트(58)와 콘트롤레버(59)와 연결되어 있으며, 타이머(50)는 엔진의 회전수(RPM) 증감과 더불어 연료의 분사시기를 조절하는 방식이다.In this process, the injection amount of fuel is controlled by the control rack 4, and the control rack 4 is connected to the flyweight 58 and the control lever 59 as a linkage device in the governor as shown in FIG. The timer 50 is a method of controlling the injection timing of the fuel as well as increasing and decreasing the engine speed (RPM).
이상과 같은 종래의 디젤엔진용 연료분사장치는 상기한 바와 같이 복잡한 기계식 가버너와 타이머가 부착되어 있기 때문에 그 구조가 매우 복잡하여 생산성을 저하시키고, 생산단가를 상승시키는 요인이 되고, 기계식 제어의 한계로 인하여 보다 정밀한 연료분사시기의 제어가 불가능하였다.As described above, the conventional fuel injection device for diesel engines is equipped with a complicated mechanical governor and a timer as described above, so the structure thereof is very complicated, which leads to a decrease in productivity and a rise in production cost, and the limitation of mechanical control. Because of this, more precise fuel injection timing was not possible.
본 고안은 상기와 같은 문제점을 해결하기 위하여, 디젤엔진용 연료분사장치의 인젝션 라인에 전자제어식 솔레노이드 밸브를 장착하여 전자제어에 의해 연료의 분사량과 분사시기를 조절하므로서 기존의 복잡한 디젤엔진용 연료분사장치에서 가버너와 타이머를 제거하고, 인젝션펌프내의 리이드와 콘트롤랙을 제거하여 그 구조를 단순화하며, 전자제어에 의한 정밀제어가 가능토록한 전자제어밸브가 부착된 디젤엔진용 연료분사장치를 제공코저 한 것이다.In order to solve the above problems, the present invention is equipped with an electronically controlled solenoid valve on the injection line of a fuel injection device for a diesel engine, thereby controlling the fuel injection amount and the injection timing of the conventional diesel fuel injection system. Removes the governor and timer from the device, simplifies the structure by removing the leads and control racks in the injection pump, and provides fuel injection for diesel engines with electronic control valves for precise control by electronic control It is.
도 1 은 종래 기계식 디젤연료분사장치의 계통도1 is a system diagram of a conventional mechanical diesel fuel injection device
도 2 는 종래 인젝션 펌프의 단면도2 is a cross-sectional view of a conventional injection pump
도 3 은 종래 가버너의 일부 절개 사시도3 is a partially cutaway perspective view of a conventional governor
도 4 는 본 고안 연료분사장치의 인젝션 펌프의 단면도Figure 4 is a cross-sectional view of the injection pump of the present invention fuel injection device
도 5 는 본 고안 연료분사장치의 인젝션 펌프와 노즐홀더 사이에 전자제어식 솔리드 밸브를 장착한 상태의 단면도5 is a cross-sectional view of the electronically controlled solid valve mounted between the injection pump and the nozzle holder of the fuel injection device of the present invention
도 6은 본 고안 연료분사장치의 연료분사용 노즐 홀더의 단면도Figure 6 is a cross-sectional view of the fuel injection nozzle holder of the present invention fuel injection device
도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings
1 : 캠 2 : 캠플로워1: Cam 2: Cam Follower
3 : 플런져4 : 콘트롤 랙3: plunger 4: control rack
5 : 리이드 6 : 딜리버리밸브5: lead 6: delivery valve
7 : 하이프레서 챔버8 : 플런져 리턴스프링7: high-pressor chamber 8: plunger return spring
9 : 연료흡입포트 10 : 플런져9 fuel inlet port 10 plunger
11 : 펌프측 인젝션 라인 12 : 노즐측 인젝션 라인11 pump side injection line 12 nozzle side injection line
13 : 솔레노이드 밸브측 고압로 14 : 스토퍼13 solenoid valve side high pressure furnace 14 stopper
15 : 솔레노이드 밸브 16, 17 : 퇴유로15: solenoid valve 16, 17: discharge path
18 : 노즐측 퇴유로 19 : 밸브스프링18: nozzle side discharge path 19: valve spring
20 : 아마츄어 21 : 스테이터20: amateur 21: stator
22 : 제어포트 23 : 솔레노이 밸브측 퇴유로22: control port 23: solenoid valve side discharge path
24 : 연료탱크측 퇴유로25 : 고압연료 송유로24: Fuel tank side discharge path 25: High pressure fuel channel
26 : 고압로 27 : 챔버26: high pressure 27: chamber
28 : 니이들밸브 29 : 니이들스프링28: needle valve 29: needle spring
30 : 퇴유로 31 : 챔버30: discharge path 31: chamber
50 : 타이머 51 : 인젝션 펌프50: timer 51: injection pump
52 : 피이드 펌프53 : 가버너52: feed pump 53: governor
54 : 인젝션 파이프 55 : 오우버 플로우54: injection pipe 55: overflow
56 : 연료탱크 57 : 노즐홀더56: fuel tank 57: nozzle holder
이하, 본 고안의 실시예를 첨부 도면에 의하여 상세히 설명한다 .Hereinafter, embodiments of the present invention will be described in detail by the accompanying drawings.
도 4 는 본 고안 연료분사장치의 인젝션 펌프의 단면도로서, 캠(1)과 캠플로워(2), 플런져 리턴 스프링(8), 플런져(10), 고압챔버(7), 딜리버리 밸브(6)를 설치하고, 플런져(10)부 일측에 연료 흡입포트(9)를 축설하여 구성한 인젝션 펌프(51)이다.4 is a cross-sectional view of the injection pump of the fuel injection device of the present invention, which includes a cam 1, a cam follower 2, a plunger return spring 8, a plunger 10, a high pressure chamber 7, and a delivery valve 6 ), And an injection pump 51 configured by accumulating the fuel suction port 9 on one side of the plunger 10 portion.
도 5 는 본 고안 연료분사장치의 전자제어식 솔레노이드밸브를 도시한 것으로서, 제어포트(22)에 의해 전기적 신호를 전달받아 전자기력이 발생하는 스테이터(21)의 하측에 전자기력에 의해 착탈되는 아마츄어(20)와 이에 축설되어 상하 왕복 운동을 하는 솔레노이드 밸브(15)를 밸브스프링(19)으로 탄설하여 퇴유로(16)를 개폐토록 구성하고, 그 하측에는 스토퍼(14)를 설치하며, 솔레노이드 밸브(15) 하부의 퇴유로(16)는 노즐측 퇴유로(18)와 연결되어 있고, 솔레노이드 밸브(15)의 축소경에는 밸브측 고압로(13)가 연결된 챔버(31)가 설치되어 이를 펌프측 인젝션 라인(11)과 노즐측 인젝션 라인(12)이 사이에 연결 설치한 것이다.Figure 5 shows an electronically controlled solenoid valve of the fuel injection device of the present invention, the armature 20 is detached by the electromagnetic force on the lower side of the stator 21 is generated by receiving the electrical signal by the control port 22 electromagnetic force And the solenoid valve 15, which is erected and vertically reciprocated, is installed with the valve spring 19 to open and close the discharge path 16, and a stopper 14 is installed below the solenoid valve 15. The lower discharge path 16 is connected to the nozzle side discharge path 18, and the chamber 31 of the valve side high pressure path 13 is installed at the reduced diameter of the solenoid valve 15, so that the pump side injection line is installed. (11) and the nozzle side injection line 12 connected and installed between them.
도 6 은 본 고안 연료분사장치의 연료분사용 노즐홀더의 단면도로서, 니이들 밸브(28)와 니이들 스프링(29), 챔버(27)를 구비한 노즐홀더(57)의 상측에 연료 탱크측 퇴유로(24)와 솔레노이드 밸브측 퇴유로(23)를 구성하고 측부에는 고압연료 송유로(25)를 설치 구성한 것이다.6 is a cross-sectional view of the fuel injection nozzle holder of the fuel injection device of the present invention, and the fuel tank side on the upper side of the nozzle holder 57 having the needle valve 28, the needle spring 29, and the chamber 27; The oil passage 24 and the solenoid valve side oil passage 23 are configured, and the high pressure fuel oil passage 25 is provided on the side.
이상과 같이 구성된 디젤엔진용 연료분사장치의 작용을 보면, 도 4 의 도시와 같이 콘트롤랙이 없고, 리드가 없는 플런져(10)를 구비한 인젝션 펌프(51)가 구동되면 연료흡입포트(9)로 흡입되는 연료가 고압챔버(7)로 유입되어 플런져(10)의 상승에 따라 압력이 발생되고, 발생된 압력은 딜리버리밸브(6)를 밀어 올려 인젝션 라인(54)을 통해, 도 5 와 도 6에 도시된 펌프측 인젝션 라인(11), 솔레노이드 밸브측 고압로(13), 노즐측 인젝션라인(12)에 압력을 전달하면서 도 6의 고압연료 송유로(25), 고압로(26), 챔버(27)에 까지 압력이 전달된다.Referring to the operation of the fuel injection device for the diesel engine configured as described above, as shown in FIG. 4, when the injection pump 51 including the plunger 10 without the control rack and without the lead is driven, the fuel suction port 9 Fuel is sucked into the high pressure chamber (7) is introduced into the pressure plunger 10, the pressure is generated, the generated pressure pushes the delivery valve 6 through the injection line 54, Figure 5 And the high pressure fuel oil passage 25 and the high pressure passage 26 of FIG. 6 while transmitting pressure to the pump side injection line 11, the solenoid valve side high pressure furnace 13, and the nozzle side injection line 12 shown in FIG. 6. ), Pressure is transmitted to the chamber 27.
이때 전자제어식 솔레노이드 밸브(60)내의 밸브스프링(19)에 의해 솔레노이드 밸브(15)는 하강 상태를 유지하고, 솔레노이드 밸브측 고압로(13)는 퇴유로(16)와 개방되어 연료가 빠져나가기 때문에 도 6의 챔버(27)에서 압력이 형성되지 못하여 니이들밸브(28)를 상승시키지 못하여 연료분사가 되지 않는 상태를 유지하게 된다.At this time, the solenoid valve 15 is maintained in the lowered state by the valve spring 19 in the electronically controlled solenoid valve 60, and the high-pressure path 13 at the solenoid valve side is opened with the discharge path 16 so that fuel is discharged. Since the pressure is not formed in the chamber 27 of FIG. 6, the needle valve 28 may not be raised to maintain the fuel injection.
이와 같은 상태에서 제어포트(22)를 통해서 오는 전기적인 신호에 의해 스테이터(21)에서 전자기력이 발생하고, 이에 의해 아마츄어(20)를 흡인하게 되어 솔레노이드 밸브(15)가 상승하여 퇴유로(16)를 막게 되므로 전자제어식 솔레노이드 밸브(60)에 연결된 노즐측 인젝션 라인(12)과 노즐홀더(57)의 고압연료 송유로(25)와 고압로(26)에 압력이 상승하여 챔버(27)에 압력이 전달되고 니이들 밸브(28)의 개변압을 이기고 니이들 밸브(28)를 상승시켜 연료가 분사되는 것이다.In this state, an electromagnetic force is generated in the stator 21 by an electrical signal coming through the control port 22, thereby attracting the armature 20, so that the solenoid valve 15 is raised to the discharge path 16. The pressure increases in the high pressure fuel oil passage 25 and the high pressure passage 26 of the nozzle side injection line 12 and the nozzle holder 57 connected to the electronically controlled solenoid valve 60 so that the pressure in the chamber 27 is prevented. Is transmitted and the fuel is injected by winning the opening pressure of the needle valve 28 and raising the needle valve 28.
또한 계측된 연료가 분사되면 전기적인 신호를 차단하게 되어 스테이터(21)는 자기력을 상실하게 되고, 솔레노이드 밸브(15)는 밸브스프링(19)에 의해 하강하게 되면서 고압로(13)가 퇴유로(16)와 개방되면서 연료가 급속하게 빠져나가므로 챔버(27)에 압력이 저하되기 때문에 니이들 밸브(28)가 니이들 스프링(29)에 의해 하강하면서 분사로를 차단하여 분사를 종료하게 된다.In addition, when the measured fuel is injected, the electric signal is blocked, so that the stator 21 loses the magnetic force, and the solenoid valve 15 is lowered by the valve spring 19 while the high pressure furnace 13 is discharged from the discharge path ( Since the fuel is rapidly released while opening 16) and the pressure is lowered in the chamber 27, the needle valve 28 descends by the needle spring 29 to shut off the injection path to terminate the injection.
퇴유로(16)로 빠져 나간 연료는 퇴유로(17)와 노즐측 퇴유로(18)을 거쳐서 솔레노이드 밸브측 퇴유로(23)를 통해서 연료탱크측 퇴유로(24)로 빠져 나가게 된다.The fuel which has exited to the discharge path 16 exits the fuel tank side discharge path 24 through the solenoid valve side discharge path 23 via the discharge path 17 and the nozzle side discharge path 18.
상기와 같은 작용은 플런져(10)가 상승하는 과정에서 발생하게 되며 연료의 분사량과 분사시기는 솔레노이드 밸브(15)의 닫힘 시기와 닫힘 기간 그리고 열리는 시간에 의해 동시에 제어되어 기계식 연료분사장치의 가버너와 타이머의 역활은 더욱 정밀하게 할 수 있는 것이다.The above action occurs in the process of raising the plunger 10, and the injection amount and the injection timing of the fuel are simultaneously controlled by the closing timing, the closing period and the opening time of the solenoid valve 15, so that the mechanical fuel injection device is covered. The role of you and the timer can be more precise.
이상과 같이 본 고안은 기존의 기계식 가버너와 타이머에 의해 연료의 분사량과 분사시기를 조절하는 디젤엔진용 연료분사장치와 달리 가버너와 타이머를 제거하고, 인젝션펌프의 리이드와 콘트롤랙을 제거하여, 노즐홀더와 인젝션 펌프사이의 인젝션 라인에 전자제어식 솔레노이드 밸브를 장착하므로서 연료분사장치의 구조를 단순화시키고, 전자제어에 의한 정밀제어가 가능하게 되었다.As described above, the present invention removes the governor and the timer and removes the injection pump lead and the control rack, unlike the fuel injection device for the diesel engine which controls the injection amount and the injection timing of the fuel by the conventional mechanical governor and the timer. By mounting an electronically controlled solenoid valve on the injection line between the holder and the injection pump, the fuel injection system can be simplified and precisely controlled by electronic control.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960035251U KR200144024Y1 (en) | 1996-10-24 | 1996-10-24 | Fuel injection device equipped with the electronic valve for a diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960035251U KR200144024Y1 (en) | 1996-10-24 | 1996-10-24 | Fuel injection device equipped with the electronic valve for a diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980021923U KR19980021923U (en) | 1998-07-15 |
| KR200144024Y1 true KR200144024Y1 (en) | 1999-06-15 |
Family
ID=19470629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960035251U KR200144024Y1 (en) | 1996-10-24 | 1996-10-24 | Fuel injection device equipped with the electronic valve for a diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200144024Y1 (en) |
-
1996
- 1996-10-24 KR KR2019960035251U patent/KR200144024Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980021923U (en) | 1998-07-15 |
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