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KR970702430A - 내연기관용 연료분사장치(Kraftstoffeinspritzeinrichtung fur brennkraftmaschinen) - Google Patents

내연기관용 연료분사장치(Kraftstoffeinspritzeinrichtung fur brennkraftmaschinen)

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Publication number
KR970702430A
KR970702430A KR1019960705668A KR19960705668A KR970702430A KR 970702430 A KR970702430 A KR 970702430A KR 1019960705668 A KR1019960705668 A KR 1019960705668A KR 19960705668 A KR19960705668 A KR 19960705668A KR 970702430 A KR970702430 A KR 970702430A
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KR
South Korea
Prior art keywords
valve
fuel
valve member
injection
internal combustion
Prior art date
Application number
KR1019960705668A
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English (en)
Other versions
KR100413555B1 (ko
Inventor
발테르 에그레르
페테르 보에란트
Original Assignee
랄프 홀거 베렌스; 빌프리트 뵈어
로베르트 보쉬 게엠베하
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Application filed by 랄프 홀거 베렌스; 빌프리트 뵈어, 로베르트 보쉬 게엠베하 filed Critical 랄프 홀거 베렌스; 빌프리트 뵈어
Publication of KR970702430A publication Critical patent/KR970702430A/ko
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Publication of KR100413555B1 publication Critical patent/KR100413555B1/ko

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
    • F02M63/0275—Arrangement of common rails
    • F02M63/0285—Arrangement of common rails having more than one common rail
    • F02M63/0295—Arrangement of common rails having more than one common rail for V- or star- or boxer-engines
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M63/0005—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 valves actuated by fluid pressure
    • 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
    • F02M63/0205—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 for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • 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
    • F02M63/0205—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 for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • F02M63/0215—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 for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by draining or closing fuel conduits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7869—Biased open

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

본 발명은, 내연기관용 연료분사장치로서, 연료를 저압실(7)로부터 고압도관(9, 21)을 통해, 공급하고자 하는 내연기관의 연소실내에 돌입하는 1개 이상의 분사밸브(23)로 보내기 위한 연료압송펌프(1)와, 1개 이상의 고압도관(9, 21)안에서 최대연료관류량을 제한하는 관류제한밸브(27)를 구비하고 있고, 상기 관류제한밸브(27)가 축방향으로 활주가능한 밸브부재(35)를 가지고 있고, 상기 밸브부재(35)가, 그 폐쇄위치에서 분사밸브(23)를 향하는 방향으로 흐르는 연료에 의해서, 최대연료관류량을 초과한 메에 되돌림 용수철(43)의 탄성력에 저항하여 밸브시트(39)에 맞닿아 붙여지도록 되어있고, 밸브시트(39)로부터 들어 올려진 밸브부재(35)를 통하는 연료관류량이, 밸브부재(35)에 실치된 1개 이상의 조임장소(49.50)애 의해서 조절가눙한 형식의 것에 관한 것이다. 상기의 경우, 최소의 누수량을 검출할 수 있도록 하기 위해서, 관류제한밸브(27)는, 밸브부재(35)가 각 분사마다 밸브시트(39)를 향하는 방향에서 1회의 스트로크 운동을 행하지만, 상기 밸브시트(39)에는 고압도관이 기밀하지 않은상태에서만 도달하도록 구성되어 있고, 소량의 누수량에 있어서는, 밸브부재(35)의 초기위치가 분사단계중에 밸브시트(39)를 향하는 방향으로 이동하게 되어있다.

Description

내연기관용 연료분사장치(Kraftstoffeinspritzeinrichtung fur brennk raftmaschinen)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 삽입된 관류제한밸브를 가지는 연료분사장치 구성의 개략도,
제2도는 조임삽입체를 구비한 관류제한밸브의 제1실시예의 단면도,
제3도는 밸브부재의 단면벽내에서 조임구멍을 구비한 관류제한밸브의제 제2실시예의 단면도,
제4도는 분사밸브에 있어서의 2개의 분사시간에 걸친, 고압도관내의 소량의 누설이 있는 경우 및 없는 경우의 밸브부재 스트로크 운동의 경과를 나타내는 선도이다.

Claims (8)

  1. 연료를 저압실(7)로부터 고압도관(9,21)을 통해 공급하고자 하는 내연기관의 연소실내로 돌입하는 하나 이상의 분사밸브(23)로 보내기위한 연료압송 펌프(1)와, 1개 이상의 고압도관(9, 21)안에서 최대연료관류량을 제한하는 관류제한밸브(27)를 구비하고, 상기 관류제한밸브(27)가 축방향에서 활주가능한 밸브부재(35)를 가지고 있고, 상기 밸브부재(35)가, 그 폐쇄위치에서 분사밸브(23)를 향하는 방향으로 흐르는 연료에 의해서 최대연료관류량을 초과한 때에 되돌릴 용수철(43)의 탄성력에 저항하여 밸브시트(39)에 맞닿아 붙게되어 있고, 밸브시트(39)로부터 들어 올려진 밸브부재(35)를 통하는 연료관류량이 밸브부재(35)에 설치된 1개 이상의 조임장소(49, 50)에 의해서 조절가능한 형식의 내연기관용 연료분사장치에 있어서, 밸브부재(35)의 조임횡단면과 되돌림 용수철(43)의 용수철강도가 분사밸브(23)에 있어서의 유체투과율에 따라서 분사밸브(23)에 있어서의 분사과정 중에 이미 관류제한밸브(27)의 밸브부재(35)의 폐쇄방향에서의 최대스트로크보다도 작은 조절운동이 얻어지도록 조절되어 있고, 관류제한밸브(27)의 밸브부재(35)가 손상이 없는 운전시의 분사중단중에 그 초기위치로 되돌아가게 되어 있으며, 관류제한밸브(27)와 분사밸브(23)의 사이의 고압도관(21)이 기밀하지 않은 경우에는, 관류제한밸브(27)의 밸브부재(35)가 그 초기위치로 되돌아가지 않게 되어 있는 것을 특징으로 하는 내연기관용 연료분사장치.
  2. 제1항에 있어서, 관류제한밸브(27)의 밸브부재(35)의 조임횡단면, 되돌림 용수철(43)의 탄성력 및 밸브 횡단면을 상응하게 설계함에 의하여 조절가능한, 관류제한밸브(27)에 있어서의 연료류의 유체투과율이 내연기관의 최대허용회전수 및 최대허용분사량에 있어서, 분사중단중에, 허용분사량보다도 많은 양이 관류하는 정도로 높게 설정되어 있는 것을 특징으로 하는 내연기관용 연료분사장치.
  3. 제1항에 있어서, 관류제한밸브(27)의 밸브부재(35)가 사발형상으로 구성되어 있고, 상기 밸브부재의 개방한 말단면측이 고압펌프(1)에 접속된 고압도관(21)의 부분에 접속되고, 밸브부재의 폐쇄한 말단면측이 밸브시트(39)와 함께 작용하는 밸브밀봉면(37)을 형성하고 있고, 밸브부재의 폐쇄한 말단면에 하나 이상의 관류개구(41)가 설치되어 있고, 상기 관류개구(41)의, 밸브밀봉면(37)에 있어서의 출구개구가 분사류방향에서 보아 밸브시트(39)의 앞에 배치되어 있는 것을 특징으로 하는 내연기관용 연료분사장치.
  4. 제3항에 있어서, 관류제한밸브(27)의 밸브부재(35)의 폐쇄한 말단면측(37)에 설치된 관류개구가 조임구멍(55)으로서 구성된 것을 특징으로 하는 내연기관용 연료분사장치.
  5. 제3항에 있어서, 관류제한밸브(27)의 밸브부재(35)가 조임장소(49)를 구비한 조임삽입체(47)를 가지고 있는 것을 특징으로 하는 내연기관용 연료분사장치.
  6. 제3항에 있어서, 밸브부재(35)의 밸브밀봉면(37) 및 관류제한밸브(27)의 밸브시트(39)가 원추형으로 구성되어 있는 것을 특징으로 하는 내연기관용 연료분사장치.
  7. 제3항에 있어서, 관류제한밸브(27)의 되돌림 용수철(43)이, 밸브부재(35)에 있어서의 밸브밀봉면(37)의 평평한 부분과 관류구멍(33)의 구멍단부의 사이에 걸려 있는 것을 특징으로 하는 내연기관용 연료분사장치.
  8. 제1항에 있어서, 연료고압펌프(1)와 분사밸브(23)의 사이의 고압도관(9, 21) 안에, 공통의 고압수집실(11)이 삽입되어 있고, 상기 고압수집실(11)안에, 연료고압펌프(1)가 이송되고, 각 고압도관(21)으로부터 분사밸브(23)로 도출되도록 되어있는 것을 특징으로 하는 내연기관용 연료분사장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960705668A 1995-02-21 1996-02-02 내연기관용 연료분사장치 KR100413555B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29502829U DE29502829U1 (de) 1995-02-21 1995-02-21 Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
DE29502829.7 1995-02-21

Publications (2)

Publication Number Publication Date
KR970702430A true KR970702430A (ko) 1997-05-13
KR100413555B1 KR100413555B1 (ko) 2004-04-03

Family

ID=8004210

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960705668A KR100413555B1 (ko) 1995-02-21 1996-02-02 내연기관용 연료분사장치

Country Status (7)

Country Link
US (1) US5692476A (ko)
EP (1) EP0776421B1 (ko)
JP (1) JPH09512325A (ko)
KR (1) KR100413555B1 (ko)
CN (1) CN1064743C (ko)
DE (2) DE29502829U1 (ko)
WO (1) WO1996026362A1 (ko)

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DE19651671C2 (de) * 1996-12-12 2001-10-04 Daimler Chrysler Ag Steuerung einer Einspritzanlage für eine mehrzylindrige Brennkraftmaschine
US5957197A (en) * 1997-04-10 1999-09-28 Liaohe Petroleum Exploration Bureau Of Xinglongtai Downhole cut-off valve used for cementing
DE19754132B4 (de) * 1997-12-05 2005-06-23 Man Nutzfahrzeuge Ag Common Rail Einspritzsystem für Brennkraftmaschinen
JP4070042B2 (ja) * 1998-01-20 2008-04-02 三菱電機株式会社 筒内噴射用燃料噴射弁の製造方法およびそれに用いられる燃料噴射量調整装置
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US5692476A (en) 1997-12-02
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CN1064743C (zh) 2001-04-18
WO1996026362A1 (de) 1996-08-29
EP0776421A1 (de) 1997-06-04
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JPH09512325A (ja) 1997-12-09
DE29502829U1 (de) 1996-06-20
CN1145654A (zh) 1997-03-19

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