KR970011374A - Fuel injection device - Google Patents

Fuel injection device Download PDF

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Publication number
KR970011374A
KR970011374A KR1019960030763A KR19960030763A KR970011374A KR 970011374 A KR970011374 A KR 970011374A KR 1019960030763 A KR1019960030763 A KR 1019960030763A KR 19960030763 A KR19960030763 A KR 19960030763A KR 970011374 A KR970011374 A KR 970011374A
Authority
KR
South Korea
Prior art keywords
fuel injection
valve
main body
fuel
pressure
Prior art date
Application number
KR1019960030763A
Other languages
Korean (ko)
Other versions
KR100237842B1 (en
Inventor
후미쓰구 요시즈
Original Assignee
오타 유다카
가부시키가이사 제쿠세루
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Publication of KR970011374A publication Critical patent/KR970011374A/en
Application granted granted Critical
Publication of KR100237842B1 publication Critical patent/KR100237842B1/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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/31—Control of the fuel 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
    • F02M2200/505—Adjusting spring tension by sliding spring seats
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical

Landscapes

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

Abstract

연료분사노즐(1)의 메인보디(1a)에는 돗지플랜저(22), 노즐스프링(25), 침밸브(11)가 선단을 향하여 차례로 수용되어 있다. 연료분사노즐(1)로부터 떨어져서 케이싱(40)과 이 케이싱에 장착된 압력제어밸브(50)가 배치되어 있다. 케이싱의 연료저류실(42)은 상기 노즐스프링(25)을 수용하기 위한 수용구멍(14)에 접속되어 있다. 압력제어밸브(50)는 이 연료 저류실(42)의 압력을 제어하고, 나아가서는 상기 수용구멍(14)의 압력을 제어한다.A nozzle flange 22, a nozzle spring 25 and a needle valve 11 are housed in the main body 1a of the fuel injection nozzle 1 in this order. A casing 40 and a pressure control valve 50 mounted on the casing are disposed apart from the fuel injection nozzle 1. The fuel storage chamber (42) of the casing is connected to a receiving hole (14) for receiving the nozzle spring (25). The pressure control valve 50 controls the pressure in the fuel storage chamber 42 and further controls the pressure in the accommodation hole 14. [

Description

연료분사장치Fuel injection device

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

제1도는 본 발명의 연료분사장치의 1실시예를 도시한 개략도,FIG. 1 is a schematic view showing an embodiment of the fuel injection device of the present invention,

제2도는 동 연료분사장치의 연료분사노즐을 도시한 종단면도.FIG. 2 is a longitudinal sectional view showing the fuel injection nozzle of the fuel injection device. FIG.

Claims (5)

다음의 구성을 구비하고 있는 것을 특징으로 하는 연료분사장치. (a) 파일로트 분사와 주분사의 2단계분사를 하는 연료분사노즐(1). 이 분사노즐은 다음의 구성을 포함하고 있다. (ⅰ) 가늘고 긴 메인보디(1a). 이 메인보디는 속이 비어있고, 선단으로부터 기단을 향하여 차례로 배치됨과 동시에, 서로 이어지는 제1, 제2, 제3수용구멍(8, 14, 16x)을 가지고 있다. 메인보디의 선단에는 분출구(10)와 주밸브좌(9)가 형성되어 있다. 분출구는 주밸브좌를 통하여 제1수용구멍에 이어져 있다. 메인보디는 고압연료를 제1수용구멍에 공급하기 위한 공급통로(12)와, 제2수용구멍내의 연료를 배출하기 위한 배출통로(30)를 가지고 있다. 메인보디는 이 공급통로와 제3수용구멍(16x)이 이어지는 부밸브좌(12)를 가지고 있다. (ⅱ) 상기 메인보디의 제1수용구멍에 수용된 침밸브(11). 침밸브는 메인보디의 축방향으로 슬라이드 가능하고, 상기 주밸브좌에 착좌하거나, 주밸브좌로부터 리프트한다. (ⅲ) 상기 메인보디의 제3수용구멍에 수용된 돗지플랜저(22). 이 돗지플랜저는 메인보디의 축방향으로 슬라이드 가능하고, 상기 부밸브좌에 착좌하거나 부밸브좌로부터 리프트한다. (ⅳ) 상기 메인보디의 제2수용구멍(14)에 수용된 노즐스프링(25). 이 노즐스프링은 상기 침밸브와 돗지플랜저를 반대방향으로 가압하고, 이에 의하여 침밸브와 돗지플랜저를 각각 주밸브좌, 부밸브좌를 향하여 가압한다. (ⅴ) 밀폐공간(16b)내의 압력을 상기 제2수용구멍(14)으로 새나가게 하는 리이크수단(24). 이 밀폐공간(16b)은 돗지플랜저(22)가 부밸브좌(20)에 착좌하였을때, 제3수용구멍(16x)에 있어서 부밸브좌 근방에 형성된다. 다음의 것을 특징으로 한다. 상기 연료분사장치는 다시 다음의 구성을 구비하고 있다. (b) 압력제어수단(50, 60). 이 압력제어수단은 상기 연료분사노즐(1)의 제2수용구멍(14)에 상기 배출통로(30)를 통하여 접속되고, 제2수용구멍의 압력을 제어한다.Wherein the fuel injection device has the following configuration. (a) A fuel injection nozzle (1) for performing two-stage injection of pilot injection and main injection. This injection nozzle includes the following configuration. (I) an elongated main body 1a. The main body is hollow and has first, second, and third receiving holes 8, 14, and 16x that are sequentially arranged from the front end toward the base end, and connected to each other. A jet port (10) and a main valve seat (9) are formed at the tip of the main body. The jet port extends to the first receiving hole through the main valve seat. The main body has a supply passage (12) for supplying high-pressure fuel to the first accommodation hole and a discharge passage (30) for discharging the fuel in the second accommodation hole. The main body has a sub-valve seat (12) in which the supply passage and the third receiving hole (16x) are connected. (Ii) a needle valve (11) housed in a first receiving hole of the main body. The needle valve is slidable in the axial direction of the main body, and is seated on the left side of the main valve or lifts from the left side of the main valve. (Iii) a toothed flange (22) received in the third receiving hole of the main body. The dovetail flange is slidable in the axial direction of the main body and is seated on the left side of the sub-valve or lifts from the left side of the sub-valve. (Iv) a nozzle spring (25) received in the second receiving hole (14) of the main body. The nozzle spring presses the needle valve and the flange flange in the opposite direction, thereby urging the needle valve and the flange flange toward the main valve seat and the sub valve seat, respectively. (V) a locking means (24) for causing the pressure in the closed space (16b) to escape into the second receiving hole (14). The closed space 16b is formed in the vicinity of the sub valve in the third accommodating hole 16x when the bead flange 22 is seated on the sub valve seat 20. [ It is characterized by the following. The fuel injection device again has the following configuration. (b) pressure control means (50, 60). The pressure control means is connected to the second receiving hole 14 of the fuel injection nozzle 1 through the discharge passage 30 to control the pressure of the second receiving hole. 제1항에 있어서, 상기 연료분사노즐(1)의 배출통로(30)에 접속된 연료저류실(42)을 가진 케이싱(40)을 구비하고, 상기 압력제어수단(50, 60)은 연료저류실의 압력을 특징으로 하는 연료분사장치.The fuel injection system according to claim 1, further comprising a casing (40) having a fuel storage chamber (42) connected to a discharge passage (30) of the fuel injection nozzle (1) A fuel injector characterized by the pressure of the seal. 제2항에 있어서, 상기 연료분사노즐(1) 복수장비되어 있고, 이들 연료분사 노즐의 배출통로(30)는 공통의 상기 연료저류실(42)에 접속되어 있는 특징으로 하는 연료분사장치.The fuel injection device according to claim 2, wherein a plurality of the fuel injection nozzles (1) are provided, and the discharge passages (30) of the fuel injection nozzles are connected to the common fuel storage chamber (42). 제1항에 있어서, 상기 압력제어수단은 상기 제2수용구멍(14)내의 연료 압력을 제어하는 압력제어밸브(50)와, 이 압력제어밸브를 엔진(E)의 운전 상태에 따라 제어하는 제어수단(60)을 가지고 있는 것을 특징으로 하는 연료분사장치.The engine control system according to claim 1, wherein the pressure control means comprises: a pressure control valve (50) for controlling a fuel pressure in the second accommodation hole (14); a control (60). ≪ / RTI > 제4항에 있어서, 상기 밸브 제어수단(60)은 엔진(E)의 회전속도에 따라 압력제어밸브(50)를 제어하고 회전속도 상승에 따라 제2수용구멍(14)내의 연료압력을 상승시킨 것을 특징으로 하는 연료분사장치.5. The engine control apparatus according to claim 4, wherein the valve control means (60) controls the pressure control valve (50) in accordance with the rotational speed of the engine (E) and raises the fuel pressure in the second containing hole Wherein the fuel injection device is a fuel injection device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960030763A 1995-08-02 1996-07-27 Fuel injection apparatus KR100237842B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7216718A JPH0942115A (en) 1995-08-02 1995-08-02 Fuel injection device
JP95-216718 1995-08-02

Publications (2)

Publication Number Publication Date
KR970011374A true KR970011374A (en) 1997-03-27
KR100237842B1 KR100237842B1 (en) 2000-01-15

Family

ID=16692839

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960030763A KR100237842B1 (en) 1995-08-02 1996-07-27 Fuel injection apparatus

Country Status (4)

Country Link
JP (1) JPH0942115A (en)
KR (1) KR100237842B1 (en)
DE (1) DE19630750C2 (en)
GB (1) GB2303877B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9714647D0 (en) * 1997-07-12 1997-09-17 Lucas Ind Plc Injector
ATE285035T1 (en) 2000-10-16 2005-01-15 Woodward Governor Co FUEL INJECTION SYSTEM
DE10318946A1 (en) * 2003-02-20 2004-09-09 L'orange Gmbh Fuel injection system
CN111894775B (en) * 2020-08-26 2024-04-23 中船动力研究院有限公司 Supercharged fluid injection device and internal combustion engine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH048310Y2 (en) * 1987-10-31 1992-03-03
JPH04140470A (en) * 1990-09-28 1992-05-14 Hino Motors Ltd In-line fuel injection pump
JP2789872B2 (en) * 1991-08-22 1998-08-27 トヨタ自動車株式会社 Fuel injection device for onboard internal combustion engine
EP0824190B1 (en) * 1992-12-23 2002-03-06 Ganser-Hydromag Ag Fuel injection valve

Also Published As

Publication number Publication date
GB2303877A (en) 1997-03-05
KR100237842B1 (en) 2000-01-15
DE19630750A1 (en) 1997-02-06
GB9615061D0 (en) 1996-09-04
JPH0942115A (en) 1997-02-10
GB2303877B (en) 1998-11-04
DE19630750C2 (en) 2002-09-05

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