KR970002090B1 - System and method for feeding fuel to a fine-particle-mixed fuel burning diesel engine - Google Patents
System and method for feeding fuel to a fine-particle-mixed fuel burning diesel engine Download PDFInfo
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- KR970002090B1 KR970002090B1 KR1019920013044A KR920013044A KR970002090B1 KR 970002090 B1 KR970002090 B1 KR 970002090B1 KR 1019920013044 A KR1019920013044 A KR 1019920013044A KR 920013044 A KR920013044 A KR 920013044A KR 970002090 B1 KR970002090 B1 KR 970002090B1
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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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
- F02M43/02—Pumps peculiar thereto
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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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
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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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Abstract
내용없음.None.
Description
제1도는 본 발명의 일실시예의 설명도.1 is an explanatory diagram of one embodiment of the present invention.
제2도는 종래의 디젤엔진의 연료분사장치의 설명도.2 is an explanatory diagram of a fuel injection device of a conventional diesel engine.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 오일탱크 2 : 급유펌프1: oil tank 2: oil supply pump
3 : 고압유분사펌프 4 : 플런저3: high pressure oil injection pump 4: plunger
5 : 배럴 6 : 토출밸브5: barrel 6: discharge valve
7 : 체크압력조절밸브 8 : 압력파전달관7: check pressure regulating valve 8: pressure wave transmission tube
9 : 연료분사밸브 10 : 분사구멍9 fuel injection valve 10 injection hole
11 : 니들밸브 12 : 오일섬프부11: needle valve 12: oil sump part
13 : 체크밸브 14 : 스프링13: check valve 14: spring
15 : 공급관 16 : 제어밸브15 supply pipe 16 control valve
17 : 급유관 18 : 급유펌프17: oil supply pipe 18: oil supply pump
19 : 연료탱크 20 : 제어장치19: fuel tank 20: control device
21 : 순환밸브 21' : 구동모터21: circulation valve 21 ': drive motor
22 : 순환용관 23 : 제어랙검지장치22: circulation pipe 23: control rack detection device
24 : 제어랙 25 : 압력전달유로24: control rack 25: pressure transmission flow path
26 : 연료공급료26: fuel supply fee
본 발명은 미분탄(微粉炭) 등의 고형연료의 미립자를 함유하는 연료유를 사용하는 디젤엔진의 연료공급장치 및 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply device and method for a diesel engine using fuel oil containing fine fuel particles such as pulverized coal.
통상의 디젤엔진은, 제2도에 도시한 바와 같이, 연료유가 연료탱크(10)로부터 급유펌프(102)를 거쳐서 연료분사펌프(103)에 공급되며, 고압연료가 되어서 연료밸브(108)에 인도되어 분사구(109)로부터 엔진의 연소실내에 분사되는 것이나, 디젤엔진용 연료에 대신하여, 미분탄과 물 또는 연료유와의 혼합연료를 고압으로해서 분사하여 연소시키는 경우에, 고압분사펌프의 플런실내의 혼합연료의 고정물에 의해 플런저가 눌어붙음을 일으겨서 엔진의 운전을 계속할 수 없었다.In the conventional diesel engine, as shown in FIG. 2, fuel oil is supplied from the fuel tank 10 to the fuel injection pump 103 via the oil supply pump 102, and becomes a high pressure fuel to the fuel valve 108. Plunge of the high-pressure jet pump when delivered and injected from the injection port 109 into the combustion chamber of the engine or injecting and combusting a mixed fuel of pulverized coal and water or fuel oil at a high pressure in place of the diesel engine fuel. The plunger was squeezed by the fixture of the mixed fuel in the room and the engine operation could not continue.
또한, 제2도중, (104)는 연료분사펌프(103)의 배럴(105)내에 수용된 플런저, (106)은 연료분사펌프(103)의 토출밸브, (107)은 연료의 공급관, (110)은 연료분사밸브(108)의 니들밸브, (111)은 연료분사밸브(108)내에 있어서 니들밸브(110)의 상류쪽에 배설된 오일섬프, (112)는 니들밸브(110)를 가압하는 스프링이다.Also, in the second diagram, 104 is a plunger accommodated in the barrel 105 of the fuel injection pump 103, 106 is a discharge valve of the fuel injection pump 103, 107 is a fuel supply pipe, 110 Is a needle valve of the fuel injection valve 108, 111 is an oil sump disposed upstream of the needle valve 110 in the fuel injection valve 108, and 112 is a spring for pressing the needle valve 110. .
본래, 고압연료분사펌프에는, 연료속의 고형물을 필터에 의해서 여과한 것을 사용하는 것이나, 고형물의 미분탄과, 연료유와의 혼합연료를 직접 연료분사펌프에 그대로 공급하는 것은 플런저의 눌어붙음발생등, 연료분사의 기구상 부적당하였다.Originally, the high-pressure fuel injection pump uses a filter of solids in the fuel by a filter, or directly supplies the mixed fuel of the pulverized coal of the solids and the fuel oil to the fuel injection pump as it is, such as plunging of the plunger, It was inappropriate for the mechanism of fuel injection.
본 발명의 목적은 상기에 표시한 종래의 펌프플런저의 눌어붙음을 일으키는 결점을 배제하고, 고형연료의 미립자와 연료유와의 혼합연료를 사용해도, 양호한 운전을 행할 수 있는 미립자 혼합연료를 때는 디젤엔진의 연료공급장치 및 방법을 제공할려고 하는 것이다.The object of the present invention is to eliminate the drawbacks of the conventional pump plunger described above, and to use a mixed fuel of solid fuel particles and fuel oil, when using a particulate fuel that can perform a good operation, the diesel It is to provide a fuel supply device and method of the engine.
본 발명은, 다음의 미립자 혼합연료를 때는 디젤엔진의 연료공급장치 및 방법에 관한 것이다.The present invention relates to a fuel supply device and method for a diesel engine for the following particulate fuel mixture.
① 일단부가 고압유분사펌프(3)에 접속하는 압력전달유로(25)와, 일단부가 석탄미립자를 함유하는 연료탱크(19)에 접속하는 연료공급로(26)를 가지는 동시에, 상기압력전달유로(25) 및 연료공급로(26)의 타단부가 연통하는 오일섬프부(12)를 가지는연료분사밸브(9)로부터 연료를 분사시키는 방법으로서, 상기 고압유분사펌프(3)의 비구동중에, 상기 연료공급로(26)의 일단부로부터 오일섬프부(12)로 석탄미립자를 함유하는 연료를 소정량 압송하고, 상기 오일섬프부(12)에 잔류하고 있는 압력전달유를 상기 고압유분사펌프(3)쪽으로 역류시킨 후, 상기 고압유분사펌프(3)를 구동하여 상기 압송된 석탄미립자를 함유한 연료와 동일량의 압력전달유를 분사시키고, 상기 압력전달유로(25)쪽으로 압력파를 발생시키므로서, 니들밸브(11)를 리프트하여 상기 오일섬프부(12)에 공급되고 있는 석탄미립자를 함유하는 연료를 분사시키는 것을 특징으로 하는 미립자 혼합연료를 때는 디젤엔진의 연료공급방법.(1) a pressure supply passage (25) having one end connected to the high pressure oil injection pump (3) and a fuel supply passage (26) connected at one end to a fuel tank (19) containing coal fine particles; (25) and a method of injecting fuel from a fuel injection valve (9) having an oil sump (12) in communication with the other end of the fuel supply passage (26), wherein the high pressure oil injection pump (3) is not driven. And a predetermined amount of fuel containing coal fine particles is fed from one end of the fuel supply passage 26 to the oil sump portion 12, and the pressure transfer oil remaining in the oil sump portion 12 is injected into the high pressure oil spray. After backflowing to the pump 3, the high pressure oil jet pump 3 is driven to inject the same amount of pressure transfer oil as the fuel containing the conveyed coal fine particles, and the pressure wave toward the pressure transfer channel 25. While generating a needle valve 11 to lift the oil sump portion. A fuel supply method for a diesel engine for a particulate-fuel mixed fuel characterized by injecting a fuel containing coal fine particles supplied to (12).
② 연료분사밸브(9)내에, 일단부가 압력전달유관(8)을 개재하여 압력전달유를 분사하는 고압유분사펌프(3)의 토출구멍에 접속하는 압력전달유로(25)와, 일단부가 연료공급량을 제어하는 제어밸브(16) 및 급유펌프(18)를 개재하여 석탄미립자를 함유하는 연료탱크에 접속하는 연료공급로(26)를 형성하는 동시에, 상기 압력전단유로(25) 및 상기 연료공급로(26)의 타단부가 연통하는 오일섬프부(12)를 형성하고, 또 상기 연료공급로(26)내에 체크밸브(13), 상기 고압유분사펌프(3)의 타단부가 연통하는 오일섬프부(12)를 형성하고, 또 상기 연료공급로(26)내에 체크밸브(13), 상기 고압유분사펌프(3)의 토출구멍에 체크압력조절밸브(7)를 설치하고, 상기 연료 분사밸브(9)내의 니들밸브(11)의 밸브 개방압력을 PN, 상기 체크밸브(13)의 연료공급방향으로의 밸브 개방압력을 PP, 상기 체크압력조절벨브(7)의 반고압유분사향으로의 밸브 개방압력을 PR로 했을 때, 상기 각 밸브 개방압력을 PNPPPR로 설정하고, 또한 상기 고압유분사펌프로(3)의 비구동중에 상기 제어밸브(16)를 소정시간 개방하여 고압유분사펌프로부터 분사되는 압력전달유와 동일량의 석탄미립자를 함유하는 연료를 연료공급로내로 공급하는 제어장치(20)를 설치하여 이루어지는 것을 특징으로 하는 미립자 혼합연료를 때는 디젤엔진의 연료공급장치.(2) In the fuel injection valve (9), one end portion is connected to the discharge hole of the high pressure oil injection pump (3) for injecting the pressure transfer oil via the pressure transfer oil pipe (8), and one end portion is the fuel. A fuel supply passage 26 is connected to a fuel tank containing coal fine particles via a control valve 16 and an oil supply pump 18 for controlling the supply amount, and at the same time, the pressure shear passage 25 and the fuel supply are provided. The oil sump part 12 which the other end part of the furnace 26 communicates is formed, and the oil which the check valve 13 and the other end part of the high pressure oil injection pump 3 communicate with in the fuel supply path 26 is carried out. The sump part 12 is formed, and the check valve 13 and the check pressure regulating valve 7 are provided in the discharge hole of the high pressure oil injection pump 3 in the fuel supply path 26, and the said fuel injection is carried out. The valve opening pressure of the needle valve 11 in the valve 9 is P N , and the valve opening pressure in the fuel supply direction of the check valve 13 is set. P P, the check pressure regulating valve (7) anti-high-pressure oil when the valve-opening pressure of the musk by P R, the setting of each valve opening pressure to P N P P P R, and further the high-pressure oil injection pump of The control device 20 which opens the control valve 16 for a predetermined time while the furnace 3 is not driven and supplies fuel containing the same amount of coal fine particles as the pressure transfer oil injected from the high pressure oil injection pump into the fuel supply furnace 20 The fuel supply device of the diesel engine when the mixed particulate fuel, characterized in that the installation).
본 발명은 상기한 바와같이 구성되어 있으므로, 제어장치에 의해서 제어되는 제어밸브에 의해서 제어된 양의 미립자를 함유하는 연료가 연료탱크로부터 연료공급관을 거쳐서 분사밸브의 오일섬프에 보내진다. 한편, 고압펌프에 의해서 오일탱크내의 오일은 가압되어서 그 압력파가 압력파전달관을 거쳐서 상기 오일섬프에 보내지고, 오일섬프내에 있는 상기 미립자를 함유하는 연료가 분사밸브의 분사구멍으로부터 분사된다. 이 분사가 종료되면, 제어장치에 의해서 제어되는 순환밸브를 거쳐서 분사밸브에 보내진 오일을 오일탱크로 되돌려져, 그 열화를 방지할 수 있다. 이와 같이 해서, 고압펌프에는 미립자를 함유하는 연료가 공급되는 일이 없고, 그 플런저의 눌어붙음을 일으키는 일은 없으며, 또한, 분사밸브의 분사구멍으로부터는 미립자를 함유하는 연료만이 분사된다.Since the present invention is constituted as described above, fuel containing the amount of fine particles controlled by the control valve controlled by the control device is sent from the fuel tank to the oil sump of the injection valve via the fuel supply pipe. On the other hand, the oil in the oil tank is pressurized by the high pressure pump, and the pressure wave is sent to the oil sump via the pressure wave transfer pipe, and fuel containing the fine particles in the oil sump is injected from the injection hole of the injection valve. When this injection is finished, the oil sent to the injection valve via the circulation valve controlled by the control device is returned to the oil tank, and the deterioration can be prevented. In this way, the high-pressure pump is not supplied with fuel containing fine particles, and the plunger is not pressed, and only fuel containing fine particles is injected from the injection hole of the injection valve.
또, 본 발명은, 고압펌프의 토출량을 제어하는 제어랙의 위치를 검출하는 제어랙검출장치의 신호가 제어장치에 입력되고, 동제어장치에 의해서 상기 오일섬프에 공급되는 미립자를 함유하는 연료의 양이 고압펌프로부터 토출되는 오일의 양에 의거해서 제어되기 때문에, 확실하게 동일연료만을 분사밸브의 분사구멍으로부터 분사되고, 압력파를 전달하는 오일이 분사구멍으로부터 분사되는것을 방지할 수 있다.In addition, the present invention provides a signal of the fuel containing the fine particles supplied to the oil sump by a signal from the control rack detection device for detecting the position of the control rack for controlling the discharge amount of the high-pressure pump is input to the control device. Since the amount is controlled based on the amount of oil discharged from the high pressure pump, only the same fuel can be reliably injected from the injection hole of the injection valve, and it is possible to prevent the oil transferring the pressure wave from the injection hole.
이하, 본 발명의 일실시예를 제1도에 의해서 설명한다. 제1도에 있어서 (1)은 연료밸브에 전달하기 위한 오일을 수용하는 오일탱크, (2)는 급유펌프, (3)은 고압유분사펌프, (4)는 플런저, (5)는 배럴, (6)은 토출밸브, (7)은 체크압력조절밸브, (8)은 압력파전달관, (9)는 연료분사밸브, (10)은 분사구멍, (11)은 니들밸브, (12)는 오일섬프부, (13)은 체크밸브, (14)는 스프링, (15)는 공급관, (16)은 제어밸브, (17)은 급유관, (18)은 급유펌프, (19)는 석탄미립자를 함유하는 연료탱크, (20)은 제어장치, (21)은 순환용 밸브, (21')은 제어장치에 의해서 제어되는 구동모터, (22)는 순환용관, (23)은 고압유분사펌프(3)의 토출량을 제어하는 제어랙(24)의 위치를 검출하는 제어랙검지장치를 표시한다.Hereinafter, an embodiment of the present invention will be described with reference to FIG. In FIG. 1, reference numeral 1 denotes an oil tank containing oil for delivery to a fuel valve, 2 denotes an oil supply pump, 3 denotes a high pressure oil injection pump, 4 denotes a plunger, and 5 denotes a barrel. 6 is discharge valve, 7 is check pressure regulating valve, 8 is pressure wave delivery tube, 9 is fuel injection valve, 10 is injection hole, 11 is needle valve, 12 is The oil sump part (13) is a check valve, (14) a spring, (15) a supply pipe, (16) a control valve, (17) an oil supply pipe, (18) an oil supply pump, and (19) coal fine particles. Containing a fuel tank, 20 is a control device, 21 is a circulation valve, 21 'is a drive motor controlled by a control device, 22 is a circulation pipe, and 23 is a high pressure oil injection pump. The control rack detecting apparatus for detecting the position of the control rack 24 for controlling the discharge amount of (3) is displayed.
그리고 연료공급로(26)와 압력전달유로(25)는, 제1도에 표시되는 바와 같이, 연료분사밸브(9)내에 따로따로 형성되어 오일섬프부(12)에 연통한 구성을 가지고, 압력전달유로(25)는 분사펌프(3)로부터 분사되는 고압유에 의해 발생하는 압력파를 연료분사밸브(9)의 오일섬프부(12)로 향하여 전달하고, 연료공급로(26)는 연료탱크(19)로부터 제어밸브(16)를 거쳐서 공급관(15)에 공급되는 연료를 연료분사밸브(9)의 오일섬프부(12)로 공급하는 것이다.The fuel supply passage 26 and the pressure transfer passage 25 are formed separately in the fuel injection valve 9 and communicate with the oil sump portion 12, as shown in FIG. The delivery passage 25 transmits a pressure wave generated by the high pressure oil injected from the injection pump 3 toward the oil sump portion 12 of the fuel injection valve 9, and the fuel supply passage 26 is a fuel tank ( The fuel supplied to the supply pipe 15 through the control valve 16 from 19 is supplied to the oil sump part 12 of the fuel injection valve 9.
석탄미립자를 함유하는 연료는 연료탱크(19)로부터 급유펌프(18)에 의해서 급유관(17)을 거쳐서 제어밸브(16)에 들어가 연료분사의 정지기간이고, 또한 압력파전달관(8)내의 오일의 순환이 종료한 후, 석탄미립자를 함유하는 연료의 소정의 양이 공급관(15)을 개재해서 연료분사밸브(9)에 들어보내게 된다. 이때 고압유분사펌프(3)의 체크압력조절밸브(7)의 밸브 개방압력 PR에 대하여 체크밸브(13)의 밸브 개방압력을 PP로 하고, 니들밸브(11)의 밸브 개방압력 PN로 해서, PNPPPR로 설정하므로서 연료탱크(19)로부터 공급된 연료는 체크밸브(13)를 통과하여, 연료분사밸브(9)의 오일섬프부(12)에 유입한다. 이 때문에 이 오일섬프부에 존재하고 있던 압력전달용의 오일은 고압유분사펌프(3)의 방향으로 압력파전달관(8)을 통과하여 되밀려서 체크압력조절밸브(7)를 눌러 개방해서 배럴(플런저실)(5)내에 역류한다.The fuel containing coal fine particles enters the control valve 16 from the fuel tank 19 via the oil supply pump 18, through the oil supply pipe 17, and stops the fuel injection, and also the oil in the pressure wave transmission pipe 8. After completion of the circulation, the predetermined amount of fuel containing coal fine particles enters the fuel injection valve 9 via the supply pipe 15. At this time, the valve opening pressure of the check valve 13 is set to P P relative to the valve opening pressure P R of the check pressure regulating valve 7 of the high pressure oil injection pump 3, and the valve opening pressure P N of the needle valve 11 is set to P P. By setting P N P P P R , the fuel supplied from the fuel tank 19 passes through the check valve 13 and flows into the oil sump part 12 of the fuel injection valve 9. For this reason, the oil for pressure transmission which existed in this oil sump part pushes back through the pressure wave transfer pipe 8 in the direction of the high pressure oil injection pump 3, presses the check pressure regulating valve 7, and opens it, and opens a barrel ( In the plunger chamber) (5).
또, 제어랙검지장치(23)에 의해 고압유의 토출량을 제어하는 제어랙(24)의 위치를 검지해서 그 신호를 제어밸브(16)의 개폐타이밍기간을 제어장치(20)에 입력하므로서,오일섬프부(12)에는, 적당한 양의 석탄미립자를 함유하는 연료가 충만된다.In addition, the control rack detecting device 23 detects the position of the control rack 24 for controlling the discharge amount of the high pressure oil, and inputs the signal to the control device 20 to input the opening / closing timing period of the control valve 16. The sump part 12 is filled with a fuel containing an appropriate amount of coal fine particles.
이 상태에서 고압유분사펌프(3)의 플런저(4)가 상승하여 토출밸브(6)를 밀어 올려 송유가 시작되면 압력파전달관(8)을 통과하여 압력전달용의 오일이 연료분사밸브(9)쪽으로 보내지고 오일섬프부(12)의 압력이 PN이상으로 상승하여 니들밸브(11)로부터 밸브스프링(14)의 누름력에 대항해서 개방되어 분사구멍(10)으로부터 분사가 시작된다.In this state, when the plunger 4 of the high-pressure oil injection pump 3 rises and pushes the discharge valve 6 up to start oil supply, the oil for pressure transmission passes through the pressure wave transfer pipe 8 and the fuel injection valve 9 ) is sent into the oil pressure of the sump portion 12 is opened against the pressing force of the valve spring 14 to increase by more than P N from the needle valve 11 begins is injected from the injection hole 10.
이때, 오일섬프부에는 미리 고압유분사펌프의 제어랙의 위치에 따른 양의 연료가 공급되어 있으므로 압력전달용의 오일은 분출하지 않는다. 또 체크밸브(13)가 폐쇄되기 때문에 고압이 걸려도 연료탱크쪽으로는 역류하지 않는다.At this time, since the amount of fuel is supplied to the oil sump part in advance according to the position of the control rack of the high pressure oil injection pump, the oil for pressure transmission is not ejected. Moreover, since the check valve 13 is closed, even if a high pressure is applied, it does not flow back to the fuel tank.
분사종료후에 제어장치(20)에 의해 구동모우터(21')를 개재해서 순환용 밸브(21)를 개방하여 압력전달용의 오일을 순환용 관(22)을 개재해서 오일탱크(1)에 순환시켜, 그 열화를 방지할 수 있다.After the completion of the injection, the control device 20 opens the circulation valve 21 via the drive motor 21 'to supply oil for pressure transfer to the oil tank 1 via the circulation pipe 22. The deterioration can be prevented by circulating.
연료분사밸브(9)내에는 압력전달유로(25) 및 연료공급로(26)가 배설되고, 양자는 선단부의 오일섬프(12)에서 합류하고 있다.The pressure transfer passage 25 and the fuel supply passage 26 are disposed in the fuel injection valve 9, and both of them join at the oil sump 12 at the tip end.
상기 압력전달유로(25)의 입구단부는, 고압분사펌프(3)로부터의 압력파전달관(8)에 접속되고, 또 상기 연료공급로(26)의 입구단부는 공급관(15)을 거쳐서 제어밸브(16)에 접속되어 있다. 또 연료공급로(26)에는, 상기 제어밸브(16)쪽으로부터 오일섬프(12)의 방향으로 향하는 흐름만을 허용하는 체크밸브(13)가 설치되어 있다.The inlet end of the pressure transfer passage 25 is connected to the pressure wave transfer pipe 8 from the high pressure injection pump 3, and the inlet end of the fuel supply passage 26 passes through a supply pipe 15 to control valves. It is connected to (16). The fuel supply passage 26 is provided with a check valve 13 that allows only a flow directed from the control valve 16 toward the oil sump 12.
상기 장치에 있어서, 고압분사펌프(3)가 작동하고 있지 않는 사이에, 석탄미립자를 함유한 연료탱크(19)로부터, 급유펌프(18), 급유관(17), 제어밸브(16), 공급관(15), 연료공급로(26), 체크밸브(13)를 개재해서, 석탄미립자를 함유한 연료가 오일섬프부(12)내 및 압력전달유로(25)에 소정량(후기하는 고압유분사펌프(3)로부터 분사되는 압력전달유량과 동일량)을 공급한다.In the above apparatus, the oil supply pump 18, the oil supply pipe 17, the control valve 16, and the supply pipe from the fuel tank 19 containing coal fine particles while the high pressure injection pump 3 is not operating. (15) Via a fuel supply passage 26 and a check valve 13, a fuel containing coal fine particles is injected into the oil sump portion 12 and the pressure transfer passage 25 by a predetermined amount (high pressure oil spray to be described later). The same amount as the pressure transfer flow rate injected from the pump 3).
이때, 니들밸브(11)의 밸브 개방압력 PN체크밸브(13)의 밸브 개방압력 PP체크압력조절밸브(7)의 밸브 개방압력 PR로 설정되어 있으므로, 니들밸브(11)는 리프트하지 않으나, 압력전달유로(25)내 혹은 압력전달유관(8)내에 잔존하고 있는 압력전달유(상기 오일섬프부(12) 등에 공급된 석탄미립자를 함유한 연료와 동일량)는 체크압력조절밸브(7)를 개재해서 고압분사펌프(3)의 플런저실로 역류한다.At this time, since the valve opening pressure P P of the needle valve 11 is set to the valve opening pressure P R of the check valve 13 of the valve opening pressure P N , the needle valve 11 does not lift. However, the pressure transfer oil (the same amount as the fuel containing coal fine particles supplied to the oil sump part 12 or the like) remaining in the pressure transfer passage 25 or the pressure transfer oil pipe 8 is a check pressure regulating valve ( It flows back into the plunger chamber of the high pressure injection pump 3 through 7).
그후, 고압유분사펌프(3)로부터, 토출밸브(6), 압력전달유관(8), 압력전달유로(25)에 압력전달유가 분사되고, 오일섬프부(12)의 압력이 니들밸브(11)의 밸브 개방압력 PN이상으로 상승하면 니들밸브(11)가 리프트하고, 이미 압력전달유로(25)내, 오일섬프부(12)내에 공급되고 있는 석탄미립자를 함유한 연료를 연소실로 분사시킨다(체크밸브(13)에 의해 석탄미립자를 함유한 연료의 역류는 저지되고 있다).Thereafter, pressure transfer oil is injected from the high pressure oil injection pump 3 into the discharge valve 6, the pressure transfer oil pipe 8, and the pressure transfer flow path 25, and the pressure of the oil sump part 12 is the needle valve 11. The needle valve 11 lifts when it rises above the valve opening pressure P N of ), and injects fuel containing coal fine particles already supplied in the pressure transfer passage 25 and the oil sump portion 12 into the combustion chamber. (The backflow of the fuel containing coal fine particles is prevented by the check valve 13).
본 발명은 이상과 같이 구성되어 있으므로, 고형연료의 미립자를 함유하는 연료를 고압펌프의 배럴(플런저실)내에 인도함이 없이 분사밸브로부터 연소실내에 고압으로 분사할 수 있다.Since the present invention is constituted as described above, the fuel containing the solid fuel fine particles can be injected from the injection valve into the combustion chamber at high pressure without guiding it into the barrel (plunger chamber) of the high pressure pump.
따라서 경도가 높은 고형연료의 미립자에 의한 고압펌프 플런저의 눌어붙음을 방지할 수 있고, 또 고압펌프로부터의 압력전달용의 오일도 순환하도록 하였으므로, 오일의 열화에 의한 유압전달의 불편도 없앨 수 있다.Therefore, the high pressure pump plunger can be prevented from sticking by the solid fuel particles having high hardness, and the oil for pressure transfer from the high pressure pump is also circulated, thereby eliminating the inconvenience of hydraulic transmission due to oil deterioration. .
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP91-205630 | 1991-07-23 | ||
| JP3205630A JP2862104B2 (en) | 1991-07-23 | 1991-07-23 | Fuel supply method for diesel engine burning particulate fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930002656A KR930002656A (en) | 1993-02-23 |
| KR970002090B1 true KR970002090B1 (en) | 1997-02-22 |
Family
ID=16510074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019920013044A KR970002090B1 (en) | 1991-07-23 | 1992-07-22 | System and method for feeding fuel to a fine-particle-mixed fuel burning diesel engine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0528150B1 (en) |
| JP (1) | JP2862104B2 (en) |
| KR (1) | KR970002090B1 (en) |
| DE (1) | DE69211250T2 (en) |
| DK (1) | DK0528150T3 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4337048C2 (en) * | 1993-10-29 | 1996-01-11 | Daimler Benz Ag | Fuel injection system for an internal combustion engine |
| EP0747923A1 (en) * | 1995-06-09 | 1996-12-11 | VIDEOCOLOR S.p.A. | Deflection yoke locking arrangement |
| DE10330511A1 (en) * | 2003-07-05 | 2005-02-10 | Man B & W Diesel Ag | Internal combustion engine |
| KR102028782B1 (en) * | 2012-03-29 | 2019-10-04 | 코몬웰스 싸이언티픽 엔드 인더스트리얼 리서치 오가니제이션 | Injection of heavy and particulate laden fuels |
| CN105715436B (en) * | 2016-01-14 | 2016-11-23 | 吉林大学 | A kind of quantitative mixing arrangement of vehicular engine liquid fuel |
| CN105840381B (en) * | 2016-03-18 | 2018-08-10 | 江苏大学 | Natural Gas ＆ Diesel Dual Fuel Engine sprays mixed characteristic research device and its control method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2924128A1 (en) * | 1979-06-15 | 1980-12-18 | Motoren Werke Mannheim Ag | Diesel engine using different fuel for starting and running - has single injector delivering starting and running fuel in sequence |
| GB2126650B (en) * | 1982-08-31 | 1988-02-10 | George Stan Baranescu | I c engine injection system providing a stratified charge of two fuels |
| JPS61171874A (en) * | 1985-01-28 | 1986-08-02 | Nippon Denso Co Ltd | Dual fuel injecting device |
| JP2538908B2 (en) * | 1987-03-15 | 1996-10-02 | 三菱重工業株式会社 | Two-fuel engine injection system |
| US4862837A (en) * | 1988-04-21 | 1989-09-05 | Defense Research Technologies, Inc. | Fuel injection of coal slurry using vortex nozzles and valves |
| DE3931456A1 (en) * | 1989-09-21 | 1991-04-04 | Bosch Gmbh Robert | INJECTION DEVICE FOR DIESEL ENGINES |
-
1991
- 1991-07-23 JP JP3205630A patent/JP2862104B2/en not_active Expired - Fee Related
-
1992
- 1992-07-02 DE DE69211250T patent/DE69211250T2/en not_active Expired - Fee Related
- 1992-07-02 EP EP92111211A patent/EP0528150B1/en not_active Expired - Lifetime
- 1992-07-02 DK DK92111211.6T patent/DK0528150T3/en active
- 1992-07-22 KR KR1019920013044A patent/KR970002090B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK0528150T3 (en) | 1996-10-21 |
| JPH0526126A (en) | 1993-02-02 |
| KR930002656A (en) | 1993-02-23 |
| DE69211250T2 (en) | 1996-12-12 |
| EP0528150B1 (en) | 1996-06-05 |
| EP0528150A1 (en) | 1993-02-24 |
| DE69211250D1 (en) | 1996-07-11 |
| JP2862104B2 (en) | 1999-02-24 |
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