KR20020047557A - A common rail type fuel injection device of diesel engine - Google Patents
A common rail type fuel injection device of diesel engine Download PDFInfo
- Publication number
- KR20020047557A KR20020047557A KR1020000076040A KR20000076040A KR20020047557A KR 20020047557 A KR20020047557 A KR 20020047557A KR 1020000076040 A KR1020000076040 A KR 1020000076040A KR 20000076040 A KR20000076040 A KR 20000076040A KR 20020047557 A KR20020047557 A KR 20020047557A
- Authority
- KR
- South Korea
- Prior art keywords
- fuel
- common rail
- pressure
- high pressure
- fuel injection
- Prior art date
Links
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
- 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
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/023—Means for varying pressure in common rails
- F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
- F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
-
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/005—Pressure relief valves
-
- 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
Abstract
Description
본 발명은 디젤엔진의 공동레일식 연료분사장치에 관한 것으로, 좀더 상세하게는 초기의 연료분사량을 감소시킴으로써 엔진의 연소특성을 개선하는 디젤엔진의 공동레일식 연료분사장치에 관한 것이다.The present invention relates to a co-rail fuel injection device for a diesel engine, and more particularly to a co-rail fuel injection device for a diesel engine to improve the combustion characteristics of the engine by reducing the initial fuel injection amount.
현재 디젤엔진용 연료분사장치의 하나로서, 공동레일식 연료분사장치가 개발되어 사용되고 있다. 이와 같은 공동레일식 연료분사장치는 연료펌프에 의해 가압된 고압의 연료를 공동레일내에 저장한 다음 인젝터의 솔레노이드밸브를 적절히 개폐함으로써, 연료분사량과 연료분사시기를 제어한다.As a fuel injection device for a diesel engine, a joint rail fuel injection device has been developed and used. The common rail fuel injection device controls the fuel injection amount and the fuel injection timing by storing the high-pressure fuel pressurized by the fuel pump in the common rail and then opening and closing the solenoid valve of the injector appropriately.
도 1은 종래 기술에 따른 디젤엔진의 공동레일식 연료분사장치의 계통도로서, 종래 기술에 따른 공동레일식 연료분사장치는, 고압연료펌프(3)가 연료탱크(1)의 연료를 가압하여 고압공동레일(5, HPCR; High Pressure Common Rail)로 공급함으로써 상기 고압공동레일(5)에 소정의 고압연료를 저장시키고, 미도시된 전자제어유니트가 엔진의 운전상태에 따라 인젝터(7)내의 솔레노이드 밸브(미도시함)를 개폐시킴으로써 상기 고압공동레일(5)에 저장된 고압의 연료를 분사시킨다.1 is a system diagram of a common-rail fuel injection device for a diesel engine according to the prior art, wherein the high-pressure fuel pump 3 pressurizes the fuel in the fuel tank 1 by a high-pressure fuel pump 3 according to the prior art. By supplying the common rail (5, HPCR; High Pressure Common Rail) to store a predetermined high-pressure fuel in the high-pressure common rail (5), the electronic control unit not shown is the solenoid in the injector (7) in accordance with the operating state of the engine The high pressure fuel stored in the high pressure common rail 5 is injected by opening and closing a valve (not shown).
그러나, 상기한 바와 같은 종래 기술에 따른 공동레일식 연료분사장치는 도 2에 도시된 바와 같이, 연료분사구간 동안 고압공동레일(5)에서 인젝터(7)로 공급되는 연료의 압력이 일정하게 고압으로 유지됨에 따라 연료분사구간의 연료분사율 패턴이 직사각형 타입으로 형성되고, 초기의 연료분사량이 과도하여 엔진의 연소특성이 저하되는 문제점이 있었다.However, the common rail fuel injection device according to the prior art as described above, as shown in Figure 2, the pressure of the fuel supplied to the injector 7 from the high-pressure common rail 5 during the fuel injection section is a constant high pressure As a result, the fuel injection rate pattern of the fuel injection section is formed in a rectangular type, and the initial fuel injection amount is excessive, thereby deteriorating combustion characteristics of the engine.
이에, 본 발명은 상기한 바와 같은 종래의 제 문제점을 해소하기 위해 안출된 것으로, 연료분사구간 초기의 연료분사량을 감소시킴으로써, 엔진의 연소특성을 개선하여 엔진의 성능을 향상시킬 수 있을 뿐만 아니라 배기 가스를 저감할 수 있는 디젤엔진의 공동레일식 연료분사장치를 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the above-mentioned problems, and by reducing the fuel injection amount at the beginning of the fuel injection section, it is possible to improve the performance of the engine by improving the combustion characteristics of the engine as well as exhaust The purpose is to provide a common rail fuel injection device for a diesel engine that can reduce gas.
상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 디젤엔진의 공동레일식 연료분사장치는, 고압의 연료가 저장되는 고압공동레일과, 연료탱크의 연료를 가압하여 고압의 연료를 상기 고압공동레일에 공급하는 고압연료펌프, 상기 고압공동레일과 인젝터를 연결하는 제1연료통로에 설치되어 제1연료통로를 개폐하는 스위칭밸브, 저압의 연료가 저장되는 저압공동레일, 상기 저압공동레일과 제1연료통로를 연결하는 제2연료통로에 설치된 오리피스 및, 엔진의 운전상태에 따라 상기 스위칭밸브를 개폐시키는 전자제어유니트를 포함하여 구성된 것을 특징으로 한다.The common rail fuel injection device of the diesel engine according to the present invention for achieving the above object is a high-pressure common rail for storing high-pressure fuel, and pressurized fuel in the fuel tank to pressurize the high-pressure fuel to the high-pressure common rail. A high pressure fuel pump to supply to the first fuel passage is connected to the high pressure common rail and the injector, the switching valve for opening and closing the first fuel passage, a low pressure common rail for storing the low pressure fuel, the low pressure common rail and the first An orifice installed in the second fuel passage connecting the fuel passage, and an electronic control unit for opening and closing the switching valve according to the operating state of the engine.
또한, 상기 저압공동레일에 저장되는 연료의 압력을 조절하기 위한 압력조절밸브를 더 포함하여 구성된 것을 특징으로 한다.In addition, it characterized in that it further comprises a pressure control valve for regulating the pressure of the fuel stored in the low pressure joint rail.
도 1은 종래 기술에 따른 디젤엔진의 공동레일식 연료분사장치의 계통도,1 is a system diagram of a common rail fuel injection device of a diesel engine according to the prior art,
도 2는 종래 기술에 따른 연료분사장치에서의 연료분사율 패턴을 도시한 그래프,2 is a graph showing a fuel injection rate pattern in the fuel injection device according to the prior art,
도 3은 본 발명에 따른 디젤엔진의 공동레일식 연료분사장치의 계통도,3 is a system diagram of a common rail fuel injection device for a diesel engine according to the present invention;
도 4는 본 발명에 따른 연료분사장치에서의 연료분사율 패턴을 도시한 그래프이다.4 is a graph showing a fuel injection rate pattern in the fuel injection device according to the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
11 : 연료탱크 13 : 고압연료펌프11: fuel tank 13: high pressure fuel pump
15 : 고압공동레일 17 : 스위칭밸브15: high pressure common rail 17: switching valve
18 : 제1연료통로 19 : 제2연료통로18: first fuel passage 19: second fuel passage
21 : 오리피스 23 : 저압공동레일21: Orifice 23: Low pressure common rail
25 : 압력조절밸브 27 : 인젝터25: pressure control valve 27: injector
29 : 전자제어유니트29: electronic control unit
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
도 3은 본 발명에 따른 디젤엔진의 공동레일식 연료분사장치의 계통도로서, 도 3에서 참조부호 11은 연료탱크(fuel tank), 13은 고압연료펌프(high pressure fuel pump), 15는 고압공동레일(high pressure common rail), 17은 스위칭밸브(switching valve), 18은 제1연료통로(fuel pass line), 19는 제2연료통로, 21은 오리피스(orifice), 23은 저압공동레일(low pressure common rail), 25는압력조절밸브(pressure control valve), 27은 인젝터(injector), 29는 전자제어유니트(ECU)이다.FIG. 3 is a system diagram of a co-rail fuel injection device for a diesel engine according to the present invention. In FIG. 3, reference numeral 11 is a fuel tank, 13 is a high pressure fuel pump, and 15 is a high pressure cavity. High pressure common rail, 17 switching valve, 18 first fuel pass line, 19 second fuel passage, 21 orifice, 23 low pressure common rail pressure common rail, 25 is a pressure control valve, 27 is an injector, 29 is an electronic control unit (ECU).
상기 고압연료펌프(13)는 연료탱크(11)의 연료를 소정의 고압으로 가압하여 고압공동레일(15)에 공급함으로써 상기 고압공동레일(15)에 고압의 연료를 저장시키도록 되어 있고, 상기 스위칭밸브(17)는 전자제어유니트(29)의 제어에 따라 개폐되어 고압공동레일(15)과 인젝터(27)를 연결하는 제1연료통로(18)를 개폐하도록 되어 있다.The high pressure fuel pump 13 stores the high pressure fuel in the high pressure common rail 15 by supplying the fuel in the fuel tank 11 to a predetermined high pressure and supplying the high pressure common rail 15. The switching valve 17 is opened and closed under the control of the electronic control unit 29 to open and close the first fuel passage 18 connecting the high pressure common rail 15 and the injector 27.
또한, 상기 오리피스(21)는 연료분사구간의 종료시 제1연료통로(18) 및 인젝터(27) 등에 잔류하는 고압의 연료를 저압공동레일(23)로 공급함으로써 상기 저압공동레일(23)에 저압의 연료를 저장시키도록 되어 있다.In addition, the orifice 21 supplies the high pressure fuel remaining in the first fuel passage 18, the injector 27, etc. to the low pressure common rail 23 at the end of the fuel injection section, thereby providing a low pressure to the low pressure common rail 23. To store fuel.
또, 상기 압력조절밸브(25)는 상기 오리피스(21)를 통해 고압의 연료가 저압공동레일(23)로 유입됨에 따라 저압공동레일(23)의 연료압력이 높아지면 자동적으로 개방되어 상기 저압공동레일(23)의 연료압력을 소정의 저압으로 유지시키도록 되어 있다.In addition, the pressure regulating valve 25 is automatically opened when the fuel pressure of the low pressure common rail 23 increases as the high pressure fuel flows into the low pressure common rail 23 through the orifice 21. The fuel pressure of the rail 23 is maintained at a predetermined low pressure.
그리고, 상기 전자제어유니트(29)는 각종 센서의 신호를 받아 엔진의 운전상태를 판단하여 상기 스위칭밸브(17)를 개폐시키도록 되어 있다.The electronic control unit 29 is configured to open and close the switching valve 17 by determining the operating state of the engine by receiving signals from various sensors.
상기와 같이 구성된 본 발명에 따른 디젤엔진의 공동레일식 연료분사장치의 작용 및 효과를 도 4를 참조하여 설명하면 다음과 같다.The operation and effects of the co-rail fuel injection device of the diesel engine according to the present invention configured as described above will be described with reference to FIG. 4.
상기 도 4에 도시된 바와 같이, 전자제어유니트(29)의 제어에 따라 스위칭밸브(17)가 폐쇄되어 있는 구간 동안에는 인젝터(27)로 연료를 공급하는제1연료통로(18)내의 연료압력이 저압으로 유지되고, 스위칭밸브(17)가 개방되어 있는 구간 동안에는 상기 제1연료통로(18)내의 연료압력이 고압으로 유지된다.As shown in FIG. 4, the fuel pressure in the first fuel passage 18 for supplying fuel to the injector 27 is reduced during the section in which the switching valve 17 is closed under the control of the electronic control unit 29. The fuel pressure in the first fuel passage 18 is maintained at a high pressure during a section in which the pressure is kept low and the switching valve 17 is open.
또한, 전자제어유니트(29)는 각종 센서의 신호를 받아 엔진의 운전상태를 판단하여 연료분사개시점에 도달하면 인젝터(27)내의 솔레노이드 밸브(미도시함)를 개방시켜 제1연료통로(18)를 통해 공급되는 연료를 실린더내로 분사하고, 연료분사종료점에 도달하면 상기 솔레노이드 밸브를 폐쇄시킴으로써, 소정의 연료분사구간 동안 연료분사를 수행한다.In addition, the electronic control unit 29 determines the operating state of the engine by receiving signals from various sensors, and when the fuel injection start point is reached, opens the solenoid valve (not shown) in the injector 27 to open the first fuel passage 18. Inject the fuel supplied through the cylinder into the cylinder, and close the solenoid valve when the fuel injection end point is reached, thereby performing fuel injection during the predetermined fuel injection section.
상기 연료분사구간은 도 4에 도시된 바와 같이, 저압분사구간과 고압분사구간으로 구분할 수 있는데, 상기 저압분사구간 동안에는 전자제어유니트(29)의 제어에 의해 스위칭밸브(17)가 폐쇄됨에 따라 저압공동레일(23)에 저장된 저압의 연료가 오리피스(21)와 제2연료통로(19) 및 제1연료통로(18)를 통해 인젝터(27)로 공급되어, 상기 인젝터(27)에 의해 실린더내로 분사되는 연료분사율이 낮게 유지되는 것이다.The fuel injection section may be divided into a low pressure injection section and a high pressure injection section, as shown in FIG. 4. During the low pressure injection section, the low pressure as the switching valve 17 is closed by the control of the electronic control unit 29. The low pressure fuel stored in the cavity rail 23 is supplied to the injector 27 through the orifice 21, the second fuel passage 19, and the first fuel passage 18, and into the cylinder by the injector 27. The injected fuel injection rate is kept low.
또한, 상기 고압분사구간 동안에는 전자제어유니트(29)의 제어에 의해 스위칭밸브(17)가 개방됨에 따라 고압공동레일(15)에 저장된 고압의 연료가 스위칭밸브(17)와 제1연료통로(18)을 통해 인젝터(27)로 공급되어, 상기 인젝터(27)에 의해 실린더내로 분사되는 연료분사율이 높아지는 것이다.In addition, as the switching valve 17 is opened by the control of the electronic control unit 29 during the high-pressure injection section, the high-pressure fuel stored in the high-pressure common rail 15 is transferred to the switching valve 17 and the first fuel passage 18. The fuel injection rate supplied to the injector 27 through the injector 27 and injected into the cylinder by the injector 27 is increased.
그리고, 상기 고압분사구간은 도 4에 도시된 바와 같이, 제1고압분사구간과 제2고압분사구간으로 구분할 수 있는데, 상기 제1고압분사구간은 스위칭밸브(17)의 개방동작구간 즉, 스위칭밸브(17)가 개방을 시작하여 개방이 완료되는 시점까지의구간이다. 상기와 같은 제1고압분사구간에서는 스위칭밸브(17)의 개방도가 서서히 증가함에 따라 상기 고압공동레일(15)에서 제1연료통로(18)를 통해 인젝터(27)로 공급되는 연료의 압력 또한 서서히 증가하게 되어, 상기 인젝터(27)에 의해 실린더내로 분사되는 연료분사율이 서서히 증가하는 것이다.And, as shown in Figure 4, the high-pressure injection section can be divided into a first high-pressure injection section and a second high-pressure injection section, the first high-pressure injection section is the open operation section of the switching valve 17, that is, switching This is the section from the time when the valve 17 starts to open and the opening is completed. In the first high-pressure injection section as described above, as the opening degree of the switching valve 17 gradually increases, the pressure of the fuel supplied to the injector 27 through the first fuel passage 18 in the high-pressure joint rail 15 is also increased. As it gradually increases, the fuel injection rate injected into the cylinder by the injector 27 gradually increases.
또한, 상기 제2고압분사구간은 스위칭밸브(17)가 완전히 개방되어 있는 구간 즉, 스위칭밸브(17)가 완전히 개방된 다음부터 스위칭밸브(17)의 폐쇄가 시작되는 시점까지의 구간이다. 상기와 같은 제2고압분사구간에서는 스위칭밸브(17)가 완전히 개방되어 있음에 따라 상기 고압공동레일(15)에서 제1연료통로(18)를 통해 인젝터(27)로 공급되는 연료의 압력이 일정하게 고압으로 유지되어, 상기 인젝터(27)에 의해 실린더내로 분사되는 연료분사율이 높게 유지되는 것이다.In addition, the second high pressure injection section is a section in which the switching valve 17 is completely opened, that is, a section from the time when the switching valve 17 is completely opened to the time when the closing of the switching valve 17 starts. In the second high pressure injection section as described above, as the switching valve 17 is completely open, the pressure of the fuel supplied to the injector 27 through the first fuel passage 18 in the high pressure common rail 15 is constant. It is maintained at a high pressure so that the fuel injection rate injected into the cylinder by the injector 27 is maintained high.
한편, 상기와 같은 연료분사구간이 종료되면 전자제어유니트(29)가 스위칭밸브(17)를 폐쇄시킴과 더불어 인젝터(27)내의 솔레노이드 밸브를 폐쇄시킴에 따라, 상기 인젝터(27) 및 제1연료통로(18)에는 고압의 연료가 잔류하게 되는데, 이와 같이 잔류된 고압의 연료는 다음회의 연료분사전까지 오리피스(21)를 통해 저압공동레일(23)으로 공급되어 저장된다.On the other hand, when the fuel injection section is completed, the electronic control unit 29 closes the switching valve 17 and closes the solenoid valve in the injector 27, thereby injecting the injector 27 and the first fuel cylinder. The high-pressure fuel is left in the furnace 18. The high-pressure fuel thus retained is supplied to and stored in the low pressure joint rail 23 through the orifice 21 until the next fuel injection.
즉, 연료분사구간이 종료되면 인젝터(27) 및 제1연료통로(18)에 잔류하는 연료의 압력이 저압공동레일(23)의 연료 압력 보다 높기 때문에 상기와 같이 잔류하는 연료가 오리피스(21)를 통해 서서히 저압공동레일(23)로 유입되고, 상기와 같이 저압공동레일(23)로 유입되는 연료는 고압이므로 압력조절밸브(25)가 상기 저압공동레일(23)의 연료 압력을 소정의 저압으로 유지시키는 것이다.That is, when the fuel injection section ends, the fuel remaining in the injector 27 and the first fuel passage 18 is higher than the fuel pressure of the low pressure common rail 23, and thus the remaining fuel is orifice 21 as described above. Through the low pressure joint rail 23 is gradually introduced through the low pressure common rail 23 as described above is a high pressure, so that the pressure control valve 25 is a predetermined low pressure fuel pressure of the low pressure common rail 23 To keep it.
이때, 오리피스(1)의 유로단면적은 인젝터의 연료분사구멍보다 충분히 작으므로 연료분사구간(인젝터의 솔레노이드가 개방되어 있는 구간) 동안에는 제1연료통로(18)내에 잔류하는 연료가 저압공동레일(23)로 역류하지 않고 인젝터(27)로 공급되는 것이다.At this time, the flow path cross-sectional area of the orifice 1 is sufficiently smaller than the fuel injection hole of the injector, so that the fuel remaining in the first fuel passage 18 during the fuel injection section (the section in which the solenoid of the injector is open) has a low pressure joint rail 23. It is supplied to the injector 27 without backflow.
이상에서 설명한 바와같이 본 발명에 따르면, 연료분사구간 초기의 연료분사량을 감소시킴으로써, 엔진의 연소특성을 개선하여 엔진의 성능을 향상시킬 수 있을 뿐만 아니라 배기 가스를 저감할 수 있는 효과가 있다.As described above, according to the present invention, by reducing the fuel injection amount at the initial stage of the fuel injection section, it is possible to improve the combustion characteristics of the engine to improve the performance of the engine and to reduce the exhaust gas.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000076040A KR20020047557A (en) | 2000-12-13 | 2000-12-13 | A common rail type fuel injection device of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000076040A KR20020047557A (en) | 2000-12-13 | 2000-12-13 | A common rail type fuel injection device of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20020047557A true KR20020047557A (en) | 2002-06-22 |
Family
ID=27681509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020000076040A KR20020047557A (en) | 2000-12-13 | 2000-12-13 | A common rail type fuel injection device of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20020047557A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100428147B1 (en) * | 2001-09-28 | 2004-04-28 | 현대자동차주식회사 | Device and the method for injection controlling of diesel engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0693936A (en) * | 1992-09-11 | 1994-04-05 | Mitsubishi Motors Corp | Accumulator fuel injection device |
| JPH11148400A (en) * | 1997-11-19 | 1999-06-02 | Nissan Motor Co Ltd | Accumulator type fuel injection device for engine |
| KR19990067164A (en) * | 1996-08-29 | 1999-08-16 | 카와소에 카쯔히코 | Fuel injection device |
| JP2000130283A (en) * | 1998-10-26 | 2000-05-09 | Nissan Motor Co Ltd | Fuel injecting device of diesel engine |
| JP2000154764A (en) * | 1998-11-19 | 2000-06-06 | Mitsubishi Motors Corp | Accumulator fuel injection device |
| JP2000234551A (en) * | 1999-02-16 | 2000-08-29 | Mitsubishi Motors Corp | Accumulator fuel injection control device |
| JP2000240524A (en) * | 1999-02-18 | 2000-09-05 | Mitsubishi Motors Corp | Accumulator fuel injection control device |
-
2000
- 2000-12-13 KR KR1020000076040A patent/KR20020047557A/en not_active Application Discontinuation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0693936A (en) * | 1992-09-11 | 1994-04-05 | Mitsubishi Motors Corp | Accumulator fuel injection device |
| KR19990067164A (en) * | 1996-08-29 | 1999-08-16 | 카와소에 카쯔히코 | Fuel injection device |
| JPH11148400A (en) * | 1997-11-19 | 1999-06-02 | Nissan Motor Co Ltd | Accumulator type fuel injection device for engine |
| JP2000130283A (en) * | 1998-10-26 | 2000-05-09 | Nissan Motor Co Ltd | Fuel injecting device of diesel engine |
| JP2000154764A (en) * | 1998-11-19 | 2000-06-06 | Mitsubishi Motors Corp | Accumulator fuel injection device |
| JP2000234551A (en) * | 1999-02-16 | 2000-08-29 | Mitsubishi Motors Corp | Accumulator fuel injection control device |
| JP2000240524A (en) * | 1999-02-18 | 2000-09-05 | Mitsubishi Motors Corp | Accumulator fuel injection control device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100428147B1 (en) * | 2001-09-28 | 2004-04-28 | 현대자동차주식회사 | Device and the method for injection controlling of diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100354216B1 (en) | Fuel Injection Apparatus | |
| US6520152B1 (en) | Fuel injection system for an internal combustion engine | |
| KR100561776B1 (en) | Apparatus for fuel injection of engine | |
| KR970062289A (en) | Engine fuel injection system and its control method | |
| DE50107694D1 (en) | INJECTION ASSEMBLY FOR A FUEL MEMORY INJECTION SYSTEM OF A COMBUSTION ENGINE | |
| US7278593B2 (en) | Common rail fuel injector | |
| KR20050039901A (en) | Common rail system | |
| DE69803384T2 (en) | FUEL INJECTION DEVICE FOR DIESEL ENGINES | |
| EP1087130B1 (en) | Accumulator fuel injection system | |
| US6192862B1 (en) | Accumulator type fuel injection system | |
| KR20020047557A (en) | A common rail type fuel injection device of diesel engine | |
| JP2007162696A (en) | Fuel injection device for internal combustion engine | |
| US20040089268A1 (en) | Fuel injection device | |
| KR100190875B1 (en) | High pressure injector of a diesel engine | |
| JPH10115257A (en) | Binary fluid injection device | |
| JP2002089328A (en) | Method for controlling piezoelectric actuator of injection valve for internal combustion engine | |
| KR0136980Y1 (en) | Electronic injector ofa diesel engine | |
| KR100435698B1 (en) | Method and apparatus for controlling fuel injection | |
| JP3021216B2 (en) | Water injection device | |
| JP3981776B2 (en) | Fuel injection device | |
| KR200145888Y1 (en) | Nozzle for an automobile | |
| JPH11257177A (en) | Fuel injection device | |
| KR100252361B1 (en) | Hydrogen engine | |
| KR100448118B1 (en) | Dual fuel rail structure for a LPi | |
| KR20020058840A (en) | Common rail injection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |