KR970006940A - Fuel injection method and apparatus of internal combustion engine and fuel injection valve used therein - Google Patents

Fuel injection method and apparatus of internal combustion engine and fuel injection valve used therein Download PDF

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Publication number
KR970006940A
KR970006940A KR1019960029010A KR19960029010A KR970006940A KR 970006940 A KR970006940 A KR 970006940A KR 1019960029010 A KR1019960029010 A KR 1019960029010A KR 19960029010 A KR19960029010 A KR 19960029010A KR 970006940 A KR970006940 A KR 970006940A
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South Korea
Prior art keywords
fuel injection
fuel
injection valve
cylinders
valve
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KR1019960029010A
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Korean (ko)
Inventor
도시따까 우찌무라
요시유끼 다나베
도오루 오노세
마사미 나가노
마모루 네모또
Original Assignee
가나이 쯔도무
가부시키가이샤 히다치 세사쿠쇼
오꾸무라 마모루
가부시키가이샤 히다치 카 에지니어링
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Publication of KR970006940A publication Critical patent/KR970006940A/en

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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
    • F02M63/0003—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
    • 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
    • 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

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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 발명의 제 1 목적은 한 개의 연료분사밸브로 복수의 기통에 연료를 공급하는 경우의 기통간 연료분배성을 향상한 연료분사밸브 및 연료분사시스템을 제공하고자 하는 것이며, 제2목적은 본 연료분사밸브를 사용한 저비용의 연료분사시스템을 제공하고자 하는 것이다. 가동밸브의 하류측에 계량 및 3방향 분사를 행하는 오리피스가 존재하는 연료분사 밸브로 3개의 기통에 연료를 분배한다. 또 상기 오리피스의 중앙분사용 오리피스의 직경이 양 사이드의 직경보다 작게 형성되어 있다. 또 압력레귤레이터가 분사밸브의 가까이에 설치되어 있다. 본 발명에 의하면, 기통간 분배를 균일하게 할 수 있어 엔진의 운전성향상 및 유독 배기가스를 저감할 수 있다. 또 저비용의 연료분사장치를 제공할 수 있다.A first object of the present invention is to provide a fuel injection valve and a fuel injection system in which inter-cylinder fuel distribution is improved when one fuel injection valve supplies fuel to a plurality of cylinders, And to provide a low-cost fuel injection system using the injection valve. The fuel is distributed to the three cylinders by the fuel injection valve having an orifice for metering and three-direction injection on the downstream side of the movable valve. The diameter of the central orifice of the orifice is smaller than the diameter of both sides. A pressure regulator is installed near the injection valve. According to the present invention, the distribution between the cylinders can be made uniform, so that the driving performance of the engine can be improved and the toxic exhaust gas can be reduced. It is also possible to provide a low-cost fuel injection device.

Description

내연기관의 연료분사방법과 장치 및 그것에 사용되는 연료분사밸브Fuel injection method and apparatus of internal combustion engine and fuel injection valve used therein

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제5도는 본 발명의 본사밸브의 다른 실시예로서, 제4도의 오리피스의 수를 6개로 한 예.FIG. 5 shows another embodiment of the main valve of the present invention, wherein the number of orifices in FIG. 4 is six.

Claims (17)

흡입공기의 양을 제어하는 드로틀밸브를 구비한 드로틀밸브조립체와, 입구에 상기 드로틀밸브조립체가 설치되고, 출구에는 각 실린더에 공기를 분기공급하는 복수의 분기관이 형성되어 있는 콜렉터챔버와, 이 콜렉터챔버에 설치되고, 그 복수의 분기관의 적어도 2개의 연료를 분사하도록 복수의 분사구를 구비한 적어도 1개의 연료분사밸브가 한 개의 조립체로서 구성되어 있는 것을 특징으로 하는 연료분사장치.A throttle valve assembly including a throttle valve assembly having a throttle valve for controlling an amount of intake air, a throttle valve assembly installed at an inlet thereof, and a collector chamber having an outlet formed with a plurality of branch pipes for branching and supplying air to each cylinder, Wherein at least one fuel injection valve provided in the collector chamber and having a plurality of injection ports for injecting at least two fuels of the plurality of branch pipes is constituted as one assembly. 흡입공기를 각 실린더로 분배하는 분기관이 접속된 콜렉터챔버를 가지며, 이 콜렉터챔버에는 다시 상기 분기관의 시단위치에 연료분사밸브 설치시이트가 형성되어 있고, 그 설치시이트에 설치되는 연료분사밸브는 복수의 연료분사구를 가지며 그곳에서 연료는 분기관의 만곡부에 대하여 접선방향으로 분사공급되도록 구성되어 있는 것을 특징으로 하는 연료분사장치.And a collector chamber to which a branch pipe for distributing intake air to each cylinder is connected, wherein a fuel injection valve installation seat is formed at a starting end position of the branch pipe, and a fuel injection valve installed in the installation sheet Wherein the fuel injection device has a plurality of fuel injection openings, wherein the fuel is injected and fed in a tangential direction with respect to the curved portion of the branch pipe. 제1항 또는 2항에 있어서, 상기 콜렉터챔버에는 부압인출포트가 형성되어 있고, 적어도 그 한 개로부터 인출된 압력은 상기 분사밸브로 공급되는 연료의 압력을 조정하는 압력레귤레이터의 제어압력으로서 이용되고 있는 것을 특징으로 하는 연료분사장치.3. The fuel cell system according to claim 1 or 2, wherein the collector chamber is provided with a negative pressure outlet port, and the pressure drawn out from at least one of the ports is used as a control pressure of a pressure regulator for adjusting a pressure of fuel supplied to the injection valve Wherein the fuel injection device is a fuel injection device. 콜렉터챔버의 입구에 드로틀밸브를 구비한 드로틀몸체를 설치하고, 그 콜렉터챔버의 출구부에는 복수의 인테이크매니폴드를 일체로 형성하고, 또 이 콜렉터챔버의 인테이크매니의 분기부에는 각 인테이크매니폴드에 연료를 분사하는 복수의 분사구를 가진 연료분사밸브를 설치하고, 다시 상기 콜렉터챔버에는 연료분사밸브의 연료압력을 제어하는 압력레큘레이터를 유지하도록 구성한 것을 특징으로 하는 연료분사장치.A throttle body having a throttle valve is provided at the entrance of the collector chamber. A plurality of intake manifolds are integrally formed at the outlet of the collector chamber. The intake manifold of the collector chamber is provided with an intake manifold Wherein a fuel injection valve having a plurality of injection ports for injecting fuel is provided, and a pressure regulator for controlling the fuel pressure of the fuel injection valve is held in the collector chamber. 다기통내연기관의 연료분사장치에 이용되는 전자제어식 연료분사밸브로서 복수의 기통에 연료를 분사하도록 복수의 구비한 전자제어식 연료분사밸브에 있어서, 상기 연료분사밸브의 복수의 분사구의 분사구멍직경은 상기 연료분사밸브에 가까운 측의 분사구의 분사구멍직경이 상기 연료분사밸브에 가까운 측의 분사구의 분사구멍직경보다도 작게 구성한 것을 특징으로 하는 다기통내연기관의 연료분사장치에 이용하는 연료분사밸브.An electronically controlled fuel injection valve used in a fuel injection device of a multi-cylinder internal combustion engine, comprising: a plurality of electronically controlled fuel injection valves for injecting fuel into a plurality of cylinders, wherein the injection hole diameters of the plurality of injection ports of the fuel injection valve Wherein the injection hole diameter of the injection port on the side close to the fuel injection valve is smaller than the injection hole diameter of the injection port on the side close to the fuel injection valve. 제5항에 있어서, 상기 연료분사밸브의 중심축에 가까운쪽의 분사구멍직경이 작고, 먼쪽이 큰 것을 특징으로 하는 다기통내연기관의 연료분사장치에 이용하는 연료분사밸브.The fuel injection valve as claimed in claim 5, wherein a diameter of the injection hole on the side closer to the central axis of the fuel injection valve is small and a far side is large. 제5항에 있어서, 분사구멍수가 3개이고, 중앙의 분사구멍직경을 작게하고 양측을 크게한 것을 특징으로 하는 다기통내연기관의 연료분사장치에 이용하는 연료분사밸브.The fuel injection valve according to claim 5, wherein the number of injection holes is three, the diameter of injection hole at the center is small, and both sides are large. 제5항에 있어서, 상기 연료분사밸브의 분사구멍의 프레스타발로 뚫리는 것을 특징으로 하는 다기통내연기관의 연료분사장치에 이용하는 연료분사밸브.The fuel injection valve according to claim 5, wherein the fuel injection valve is used in a fuel injection device of a multicylinder internal combustion engine, wherein the fuel injection valve is pierced by a prestor foot of the injection hole of the fuel injection valve. 제5항에 있어서, 상기 연료분사밸브의 분사구멍이 시이트부를 가지는 노즐에 직접 천공되어 있는 것을 특징으로 하는 다기통내연기관의 연료분사장치에 이용하는 연료분사밸브.The fuel injection valve as claimed in claim 5, wherein the injection hole of the fuel injection valve is directly punched into a nozzle having a sheet portion. 제5항에 있어서, 상기 연료분사밸브의 분사구멍이 시이트부를 가지는 노즐에 다른 부재에 천공되어 있는 것을 특징으로 하는 다기통내연기관의 연료분사장치에 이용하는 연료분사밸브.6. The fuel injection valve as claimed in claim 5, wherein the injection hole of the fuel injection valve is formed in another member in a nozzle having a seat portion. 제10항에 있어서, 상기 다른 부재가 재료스테인레스제의 두께가 얇은 판재임을 특징으로 하는 다기통내연기관의 연료분사장치에 이용하는 연료분사밸브.11. The fuel injection valve according to claim 10, wherein the other member is a thin plate made of a material stainless steel. 제10항에 있어서, 상기 다른 부재가 재료스테인레스제의 소결품인 것을 특징으로 하는 다기통내연기관의 연료분사장치에 이용하는 연료분사밸브.11. The fuel injection valve according to claim 10, wherein the other member is a sintered product made of a material stainless steel. 인테이크매니폴드의 분기부에 설치된 1개의 분사밸브로 복수의 기통에 연료를 분배공급하는 것으로서, 상기 분사밸브가 톱피드타입하고, 그 정점부에 연료압력을 조정하는 프레셔레귤레이터의 연료출구부가 근접하여 설치되어 있는 것을 특징으로 하는 다기통내연기관의 연료분사장치.The injection valve is a top feed type and the fuel outlet portion of the pressure regulator for adjusting the fuel pressure is located close to the apex portion of the intake manifold by distributing the fuel to the plurality of cylinders with one injection valve provided at the branch portion of the intake manifold Wherein the fuel injection device is provided with a plurality of cylinders. 다기통내연기관의 연료분사장치로서 복수의 분사구를 구비한 한개의 전자제어식 연료분사밸브로 복수의 기통에 연료를 분사하는 것에 있어서, 어느 한 개의 기통의 흡기공정중에 복수의 기통에 동시에 연료를 분사하도록 구성한 것을 특징으로 하는 다기통내연기관의 연료분사방법.A fuel injection device for a multi-cylinder internal combustion engine, comprising: a plurality of electronically-controlled fuel injection valves each having a plurality of injection ports for injecting fuel into a plurality of cylinders, the fuel being injected simultaneously into a plurality of cylinders during an intake stroke of one of the cylinders Wherein the fuel injection valve is configured to inject fuel into the internal combustion engine. 다기통내연기관의 연료분사장치로서 복수의 분사구를 구비한 한개의 전자제어식 연료분사밸브로 복수의 기통에 연료를 분사하는 것에 있어서, 어느 한 개의 기통의 흡기공정중에 복수의 기통에 동시에 연료를 분사하도록 구성함과 더불어 시동시의 1회의 연료분사량을 시동후의 1회의 연료분사량보다도 많게 한 것을 특징으로 하는 다기통내연기관의 연료분사방법.A fuel injection device for a multi-cylinder internal combustion engine, comprising: a plurality of electronically-controlled fuel injection valves each having a plurality of injection ports for injecting fuel into a plurality of cylinders, the fuel being injected simultaneously into a plurality of cylinders during an intake stroke of one of the cylinders And the fuel injection amount for one fuel injection at the time of starting is made larger than the fuel injection amount for one time after the start of the fuel injection. 다기통내연기관의 연료분사장치로서 복수의 분사구를 구비한 한개의 전자제어식 연료분사밸브로 복수의 기통에 연료를 분사하는 것에 있어서, 어느 한개의 기통의 흡기공정중 복수의 기통에 동시에 연료를 분사하도록 구성함과 더불어 가속시에는 흡기공정이외의 타이밍으로 복수의 분사구로부터 각 기통에 동시에 연료를 분사하도록 구성한 것을 특징으로 하는 다기통내연기관의 연료분사방법.A fuel injection device for a multi-cylinder internal combustion engine, comprising: a plurality of electronically-controlled fuel injection valves each having a plurality of injection ports for injecting fuel into a plurality of cylinders, the fuel being injected simultaneously into a plurality of cylinders during an intake process of one of the cylinders And fuel is injected from the plurality of injection ports simultaneously to the cylinders at a timing other than the intake stroke at the time of acceleration. 인테이크매니폴드의 분기부에 설치된 1개의 분사밸브로 복수의 기통에 연료를 분배공급하는 것으로서, 상기 분사밸브가 탑피드 타입이고, 그 정점부에 연료압력을 조정하는 압력레귤레이터의 연료출구부가 근접하여 설치되어 있고, 상기 분사밸브를 기관의 부재에 고정할 시의 힘으로 압력레귤레이터를 동시에 고정하도록 구성한 것을 특징으로 하는 다기통내연기관의 연료분사장치.The injection valve is a top-feed type, and the fuel outlet portion of the pressure regulator for adjusting the fuel pressure is located close to the apex portion of the intake manifold, And the pressure regulator is simultaneously fixed by a force when the injection valve is fixed to the member of the engine. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960029010A 1995-07-19 1996-07-18 Fuel injection method and apparatus of internal combustion engine and fuel injection valve used therein KR970006940A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7182420A JPH0932699A (en) 1995-07-19 1995-07-19 Fuel injection method and device of internal combustion engine and fuel injection valve used for it
JP7-182420 1995-07-19

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KR970006940A true KR970006940A (en) 1997-02-21

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