KR980002802A - Fuel injection nozzle - Google Patents

Fuel injection nozzle Download PDF

Info

Publication number
KR980002802A
KR980002802A KR1019970026253A KR19970026253A KR980002802A KR 980002802 A KR980002802 A KR 980002802A KR 1019970026253 A KR1019970026253 A KR 1019970026253A KR 19970026253 A KR19970026253 A KR 19970026253A KR 980002802 A KR980002802 A KR 980002802A
Authority
KR
South Korea
Prior art keywords
fuel
injection
injection hole
nozzle
hole
Prior art date
Application number
KR1019970026253A
Other languages
Korean (ko)
Inventor
후미쓰구 요시즈
다케시 이치노세
도시키 사와키
후미오 아오키
Original Assignee
오타 유다카
가부시키가이샤 제쿠세루
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 오타 유다카, 가부시키가이샤 제쿠세루 filed Critical 오타 유다카
Publication of KR980002802A publication Critical patent/KR980002802A/en

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
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • 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
    • F02M61/042—The valves being provided with fuel passages
    • F02M61/045—The valves being provided with fuel discharge orifices
    • 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
    • F02M61/08—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 the valves opening in direction of fuel flow

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

테이퍼 구멍부분(14)의 내주면과 분사구멍의 내주면과의 교차부에는, 분사구멍(15)의 개구부에 잇따라서 뻗은 원형의 노치부(17)가 형성되어 있다. 이 노치부(17)는, 분사구멍(15)보다 큰 지름으로 형성되어 있고, 그 하단가장자리가 분사구멍(15)의 하단가장자리와 대략 접하도록 분사구멍(15)에 대하여 윗쪽으로 중심이 치우치게 되어 있다. 이에 따라, 분사구멍(15)의 축선방향에 있어서의 노치부(17)의 폭이, 분사구멍(15)의 상부측에서 넓고, 하측부에서 좁게 되어 있다. 이와 같은 노치부(17)가 형성됨에 따라, 밸브부재(20)의 리프트개시 직후와 같이 연료의 압력이 낮을때에는, 연료가 분사구멍(15)의 축선에 잇따라서 분사되지만 밸브분재(20)의 리프트 증기 이후와 같이 연료의 압력이 높을때에는, 연료의 분사구멍(15)의 축선보다 상방측으로 향하여 분사된다.At the intersection of the inner circumferential surface of the tapered hole portion 14 and the inner circumferential surface of the injection hole, a circular notched portion 17 extending in succession to the opening of the injection hole 15 is formed. The notch portion 17 is formed to have a diameter larger than that of the injection hole 15, and is centered upward with respect to the injection hole 15 so that the lower edge thereof is substantially in contact with the lower edge of the injection hole 15. have. As a result, the width of the notch portion 17 in the axial direction of the injection hole 15 is wider at the upper side of the injection hole 15 and narrower at the lower side. As the notch portion 17 is formed, when the fuel pressure is low, such as immediately after the lift of the valve member 20 is started, the fuel is injected following the axis of the injection hole 15, but the When the pressure of the fuel is high, such as after the lift steam, the fuel is injected upward above the axis of the injection hole 15 of the fuel.

Description

연료분사노즐Fuel injection nozzle

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 제1실시예를 나타낸 종단면도.1 is a longitudinal sectional view showing a first embodiment of the present invention.

제2도는 제1도의 부호(X)로 나타낸 범위의 확대도.2 is an enlarged view of the range indicated by the symbol X in FIG.

제3도는 제2도에 있어서 부호(Y)로 나타낸 범위의 확대도.3 is an enlarged view of the range indicated by the symbol Y in FIG.

제4도는 분사구멍의 유입측의 개구부를 제3도의 화살표(Z) 방향에서 보았을때의 형상을 나타낸 도면.4 is a view showing a shape when the opening on the inflow side of the injection hole is viewed in the direction of an arrow Z in FIG.

Claims (8)

밸브시이트(16, 42)를 구비한 통형상의 노즐본체(10, 40)와 이 노즐본체(10, 40)의 내부에 이동할 수 있도록 설치되었고, 밸브시이트(16, 42)에 착석하는 봉합부(25, 51)를 구비한 밸브부재(20, 50)등을 구비하였으며,상기 노즐 본체(10, 40)와 밸브부재(20, 50)와의 어느 한편에 일단이 그 한편의 바깥면에 개구하고 타단이 그 한편의 내부에 형성된 연료통로(30, 52)의 내면에 개구하는 분사구멍(15, 53)이 형성된 연료분사노즐에 있어서, 분사구멍(15, 53)의 안쪽의 개구부에 노치부(17, 17A, 17B, 17C, 54, 54A)가 형성되었고, 분사구멍(15, 53)의 길이가 그한쪽 부분에서 짧고, 다른쪽 부분에서 길어지도록 분사구멍(15, 53)의 축선방향에 있어서의 노치부(17, 17A, 17B, 17C, 54, 54A)의 폭이 분사구멍의 한쪽 부분에서 넓고, 다른쪽 부분에서 좁아져 있음을 특징으로 하는 연료분사노즐.A cylindrical nozzle body (10, 40) having a valve seat (16, 42) and a sealing portion which is installed to be movable inside the nozzle body (10, 40), seated on the valve seat (16, 42) Valve members 20 and 50 provided with (25, 51), and one end of the nozzle body (10, 40) and the valve member (20, 50) on one side of the opening on the other side In the fuel injection nozzle having the injection holes 15 and 53 having the other end opened in the inner surfaces of the fuel passages 30 and 52 formed on the other side, the notch portion is formed in the opening of the injection holes 15 and 53 inward. 17, 17A, 17B, 17C, 54, and 54A were formed, and in the axial direction of the injection holes 15, 53 so that the lengths of the injection holes 15, 53 were short in one part and longer in the other part. A fuel injection nozzle, characterized in that the notches (17, 17A, 17B, 17C, 54, 54A) have a wider portion on one side of the injection hole and a narrower portion on the other side. 창구항 1에 있어서, 연료통로(30)가 노즐본체(10)의 내부에 형성되었고, 이 연료통로(30)의 내면에 밸브시이트(16)가 형성됨과 동시에, 이 밸브시이트(16)의 하류측에 끌이가는 테이퍼 구멍부분(14)이 형성되었고, 이 테어퍼 구멍부분(14)의 내주면에 분사구멍(15)의 안쪽의 단부가 개구하게 되어 있어, 밸브부재(20)에는 봉합부(25)가 밸브시이트(16)에 착석하였을 때에 테이퍼 구멍부분(14)의 내주면에 대략 접하는 테이퍼부(24)가 형성되었고,이 테이퍼부(24)가 분사구멍(15)의 안쪽의 개구부와 항상 대향하도록 배치되어 있음을 특징으로 하는 연료분사노즐.The fuel passage 30 is formed in the nozzle main body 10, and the valve seat 16 is formed in the inner surface of the fuel passage 30, and downstream of the valve seat 16. A tapered hole portion 14 attracted to the side was formed, and an inner end portion of the injection hole 15 was opened on the inner circumferential surface of the taper hole portion 14, so that the valve member 20 had a sealing portion ( When the seat 25 is seated on the valve seat 16, a taper portion 24 is formed which substantially contacts the inner circumferential surface of the tapered hole portion 14, and this taper portion 24 is always in contact with the inner opening of the injection hole 15. A fuel injection nozzle, characterized in that it is arranged to face. 청구항 1에 있어서, 노즐본체(40)의 일단면에 밸브사이트(42)가 형성되고, 노즐본체(40)로부터 외부에 돌출한 상기 밸브부재(50)의 일단부에 밸브사이트(42)에 착석하는 봉합부(51)가 형성되어 있으며, 연료통로(52)가 밸브부재(50)의 내부에 형성되었고, 분사구멍(53)이 밸브부재(50)의 봉합부(51)근방에 형성되어 있음을 특징으로 하는 연료분사노즐.The valve site 42 is formed at one end surface of the nozzle body 40, and the valve site 42 is seated at one end of the valve member 50 protruding from the nozzle body 40 to the outside. The seal 51 is formed, the fuel passage 52 is formed in the valve member 50, and the injection hole 53 is formed in the vicinity of the seal 51 of the valve member 50. A fuel injection nozzle characterized in that. 청구항 1∼3중의 어느 한 항에 있어서,노치부(17, 17A, 17B, 54)를 구획하는 면이, 그면의 일단부와 타단부가 연료통로(30, 52)의 내면과 분사구멍(15, 53)의 내면등에 각기 접하는 철곡면(17a)에 형성되어 있음을 특징으로 하는 연료분사노즐.The surface which divides the notch part 17, 17A, 17B, 54, The one end part and the other end part of the surface, and the injection hole 15 in any one of Claims 1-3 are provided. Fuel injection nozzle, characterized in that formed on the iron curved surface (17a) respectively in contact with the inner surface and the like. 청구항 4에 있어서, 철곡면(17a)이 단면이 원호형상으로 형성되어 있음을 특징으로 하는 연료분사노즐.The fuel injection nozzle according to claim 4, wherein the curved surface 17a has an arc cross section. 청구항 1∼5중의 어느 한 항에 있어서, 분사구멍(15, 53)의 축선방향에 있어서의 노치부(17, 17A, 17B, 54, 54A)의 폭이, 밸브부재(20, 50)의 이동방향에 있어서의 분사구멍(15, 53)의 한쪽 부분에서 넓고, 다른쪽 부분에서, 좁아져 있음을 특징으로 하는 연료분사노즐.The width | variety of the notch part 17, 17A, 17B, 54, 54A in the axial direction of the injection hole 15, 53 is the movement of the valve member 20, 50 in any one of Claims 1-5. A fuel injection nozzle characterized in that it is wide at one part of the injection holes (15, 53) in the direction and narrow at the other part. 청구항 1∼5중의 어느 한 항에 있어서, 분사구멍(15)의 축선방향에 있어서의 노치부(17B)의 폭이, 연료통로(30)의 원주방향에 있어서의 분사구멍(15)의 한쪽부분에서 넓고, 다른쪽 부분에서 좁게되어 있음을 특징으로 하는 연료분사노즐.The width | variety of the notch part 17B in the axial direction of the injection hole 15 is one part of the injection hole 15 in the circumferential direction of the fuel passage 30 in any one of Claims 1-5. Fuel injection nozzles, characterized in that they are wider and narrower on the other side. 청구항 1∼청구항 3중의 어느 한 항에 있어서, 분사구멍(15, 53)이 여러개 형성되었고, 이 여러개의 분사구멍(15, 53)이 연료통로(30, 52)의 내면에 원주방향으로 서로 분리되고, 또한 연료통로(30, 52)의 길이방향의 대략 동일 위치에 배치되어 있으며, 노치부(17C, 54A)가 여러개의 분사구멍(15, 53)과 교차하도록 링형상으로 형성되었고, 이 링형상을 이루는 노치부(17C, 54A)가 연료통로(30, 52)의 길이 방향과 평행으로 뻗은 원통부(17b, 54b)와, 이 원통부(17b, 54b)에 이어지는 끝이 가는 테이퍼통부(17c, 54c)등을 구비하고 있음을 특징으로 하는 연료분사노즐.The method according to any one of claims 1 to 3, wherein a plurality of injection holes 15, 53 are formed, and these several injection holes 15, 53 are separated from each other in the circumferential direction on the inner surfaces of the fuel passages 30, 52. Also, the fuel passages 30 and 52 are arranged at substantially the same position in the longitudinal direction, and the notches 17C and 54A are formed in a ring shape so as to intersect the plurality of injection holes 15 and 53, and this ring The notches 17C, 54A which form a shape extend the cylinder part 17b, 54b which extends in parallel with the longitudinal direction of the fuel path 30, 52, and the taper cylinder part which has an end connected to this cylindrical part 17b, 54b ( 17c, 54c) and the like. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019970026253A 1996-06-21 1997-06-20 Fuel injection nozzle KR980002802A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8181551A JPH109095A (en) 1996-06-21 1996-06-21 Fuel injection nozzle
JP96-181551 1996-06-21

Publications (1)

Publication Number Publication Date
KR980002802A true KR980002802A (en) 1998-03-30

Family

ID=16102769

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970026253A KR980002802A (en) 1996-06-21 1997-06-20 Fuel injection nozzle

Country Status (3)

Country Link
JP (1) JPH109095A (en)
KR (1) KR980002802A (en)
DE (1) DE19726099A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843616B4 (en) * 1998-09-23 2006-07-06 Siemens Ag fuel Injector
JP3567838B2 (en) * 1999-04-26 2004-09-22 トヨタ自動車株式会社 Fuel injection nozzle
DE19931890A1 (en) * 1999-07-08 2001-01-18 Siemens Ag Edge rounding method for combustion engine fuel injection nozzle injection orifice channel
DE10330256A1 (en) * 2003-07-04 2005-01-20 Robert Bosch Gmbh Fuel injection valve for internal combustion engine, comprises bulges arranged such that the two connecting lines of points of largest distance to the center form an angle of less than 180 degrees with the mirror plane
JP2008068360A (en) * 2006-09-14 2008-03-27 Mitsubishi Heavy Ind Ltd Method and apparatus for working nozzle hole on nozzle body, and fuel injection nozzle manufactured by them
JP6135362B2 (en) * 2013-07-25 2017-05-31 株式会社デンソー Fuel injection valve
JP6201908B2 (en) * 2014-06-18 2017-09-27 株式会社デンソー Fuel injection valve
EP3845756A4 (en) * 2018-10-26 2022-08-10 Hitachi Astemo, Ltd. Fuel injection valve
SE2251086A1 (en) * 2022-09-20 2024-03-21 Scania Cv Ab Fuel Injector Nozzle, Fuel Injector, Internal Combustion Engine, and Vehicle

Also Published As

Publication number Publication date
DE19726099A1 (en) 1998-01-08
JPH109095A (en) 1998-01-13

Similar Documents

Publication Publication Date Title
KR100573185B1 (en) Electromagnetically operated valve
US4925111A (en) Fuel injection valve
KR100772851B1 (en) Fuel injection valve for internal combustion engines
KR960013110B1 (en) Assembly for fuel ejecting valve
EP1080305B2 (en) Fuel injection valve
US4993643A (en) Fuel injector with variable fuel spray shape or pattern
KR980002802A (en) Fuel injection nozzle
KR950703457A (en) MANIFOLD FOR RETAINER FOR A GAS GENERATOR
KR880007916A (en) Injection valve for fuel injection device of internal combustion engine
KR900014733A (en) Electronic Fuel Injection Valve
KR960001519A (en) Clip
KR100361442B1 (en) Fuel injection device
KR890002534A (en) Fuel injection valve and its adjustment method
DE4221185A1 (en) Orifice plate for a valve and method of manufacture
JP2003519758A (en) Fuel injection nozzle
WO2019092008A1 (en) Injector for the injection of gaseous fuel
KR900013196A (en) Bore Plate for Fuel Injection Valve
KR890014935A (en) Adjustable shock valve
KR970011525A (en) 2-position 3-way solenoid valve
KR920701663A (en) Pressure valve
KR20190041523A (en) Fluid injectors and needles for fluid injectors
JP2004521266A (en) Fuel injection valve for internal combustion engine
KR100631298B1 (en) Fuel injection valve
JPH0442543B2 (en)
KR100473095B1 (en) Fuel injection valve

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application