JPS6436565U - - Google Patents

Info

Publication number
JPS6436565U
JPS6436565U JP10208688U JP10208688U JPS6436565U JP S6436565 U JPS6436565 U JP S6436565U JP 10208688 U JP10208688 U JP 10208688U JP 10208688 U JP10208688 U JP 10208688U JP S6436565 U JPS6436565 U JP S6436565U
Authority
JP
Japan
Prior art keywords
needle valve
nozzle
throttle pin
fuel injection
section
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP10208688U
Other languages
Japanese (ja)
Other versions
JPH0649896Y2 (en
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 filed Critical
Publication of JPS6436565U publication Critical patent/JPS6436565U/ja
Application granted granted Critical
Publication of JPH0649896Y2 publication Critical patent/JPH0649896Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F02M61/04—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
    • F02M61/06—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 being furnished at seated ends with pintle or plug shaped extensions
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/083—Having two or more closing springs acting on injection-valve
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable pressure

Landscapes

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

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の噴射ノズルの縦断面図、第２
図は本考案の第１実施例の部分断面図、第３図は
本考案の第２実施例の部分断面図である。 １０……ノズルボデイ、１２……中間板、１４
……スリーブナツト、１６……ノズルホルダ、１
８……ニードルバルブ、２０……シート部、２２
……油だまり、２４……噴口、２６……ばね室、
２８……閉鎖ばね、３０……コイルばね、３２…
…板、３４……環状肩、３６……板、３８……圧
力片、３９……棒、４０……圧力ピン、４２……
板、４４……環状肩、４６……リング体、４８…
…付加部、４９……環状フランジ、５０……接続
部、５２，５４，５６……通路、６０，６０ａ…
…スロツトルピン、６２……平面部、６４……噴
射形成ピン、７０，７２，７４……平面部。 Figure 1 is a longitudinal sectional view of the injection nozzle of the present invention, Figure 2
The figure is a partial sectional view of the first embodiment of the present invention, and FIG. 3 is a partial sectional view of the second embodiment of the present invention. 10... Nozzle body, 12... Intermediate plate, 14
... Sleeve nut, 16 ... Nozzle holder, 1
8... Needle valve, 20... Seat part, 22
...oil pool, 24...spout, 26...spring chamber,
28...Closing spring, 30...Coil spring, 32...
... Plate, 34 ... Annular shoulder, 36 ... Plate, 38 ... Pressure piece, 39 ... Rod, 40 ... Pressure pin, 42 ...
Plate, 44... Annular shoulder, 46... Ring body, 48...
...Additional part, 49...Annular flange, 50...Connection part, 52, 54, 56...Passage, 60, 60a...
... Throttle pin, 62... Plane portion, 64... Injection forming pin, 70, 72, 74... Plane portion.

Claims (1)

【実用新案登録請求の範囲】 １ ノズルボデイ内に移動可能に支承され閉鎖ば
ねによつて燃料の流れ方向でノズルボデイのシー
ト部に圧着されると共に逆の方向で燃料圧によつ
て負荷されるニードルバルブと、このニードルバ
ルブに形成されニードルバルブの閉鎖位置ではシ
ート部の下流でノズル体に形成された噴口内に突
入しニードルバルブの前噴射行程時に噴口壁と共
に燃料のための絞られた流れ横断面を制限するス
ロツトルピンと、主噴射に相応するニードル弁の
残りの行程の開始時にニードル弁に作用する閉鎖
力を飛躍的に増大させる手段とを備えた、内燃機
関のための燃料噴射ノズルにおいて、 (イ) 閉鎖力増大のために主噴射の開始時に有
効となる前記手段が機械的なばね部材３０から成
り、ニードルバルブ１８の前行程中に閉鎖方向に
作用するばね部材３０の力若しくはニードル弁１
８の残りの行程中に閉鎖方向とは逆の方向に作用
する力が、定置に固定されたストツパ１２によつ
て受止められており、 (ロ) スロツトルピン６０の横断面がニードル
バルブ１８の閉鎖位置において噴口壁によつて覆
われたスロツトルピン部分の一部にわたり燃焼室
側の端面へ向かつて細まつていることを特徴とす
る内燃機関のための燃料噴射ノズル。 ２ ノズルボデイ１０が中間板１２を介してノズ
ルホルダ１６に緊定されており、中間板がニード
ルバルブの肩によつてニードルバルブ１８の全行
程を制限しており、機械的なばね部材がニードル
バルブ１８の閉鎖ばね２８を同軸的に取囲む第２
のコイルばね３０から成り、このコイルばね３０
の閉鎖方向で作用する力がニードル弁１８の前行
程中には中間板によつて受止められていることを
特徴とする請求項１記載の燃料噴射ノズル。 ３ 第２のコイルばね３０がリング体４６を介し
て中間板１２に支持されており、このリング体が
ニードルバルブ１８の圧力片３８に移動可能に案
内されておりかつニードルバルブ１８の閉鎖位置
では、圧力片３８の上方に半径方向でかぶさるそ
の外縁部によつて中間板１２上に載着されている
ことを特徴とする請求項２記載の燃料噴射ノズル
。 ４ スロツトルピン６０の横断面の細まりが、ス
ロツトルピン軸線６４に対して傾斜してスロツト
ルピン６０に形成された平面部６２によつて形成
されていることを特徴とする請求項１から３まで
のいずれか１項記載の燃料噴射ノズル。 ５ スロツトルピン６０ａの横断面の細まりが、
スロツトルピンに凹設された少なくとも１つの段
状の平面部７０，７２によつて形成されているこ
とを特徴とする請求項１から３までのいずれか１
項記載の燃料噴射ノズル。 ６ スロツトルピン６０ａの横断面の細まりが、
周方向で互いにずれていて互いに異なる横断平面
内で始まるようにスロツトルピンの外周に設けら
れた少なくとも２つの平面部７２，７４によつて
形成されていることを特徴とする請求項１から３
までのいずれか１項記載の燃料噴射ノズル。 ７ ニードル弁１８，１８ａの全行程時にスロツ
トルピン６０，６０ａの少なくとも１部分が噴口
２４内に留まるように、かつ、主噴射に相応する
噴口２４の最終流れ横断面がスロツトルピン６０
，６０ａの少なくとも１つの平面部６２，７２，
７４によつて形成されかつ規定されるように、ス
ロツトルピン６０，６０ａが形成されていること
を特徴とする請求項４から６までのいずれか１項
記載の燃料噴射ノズル。[Claims for Utility Model Registration] 1. A needle valve that is movably supported within the nozzle body, is pressed against the seat of the nozzle body in the direction of fuel flow by a closing spring, and is loaded by the fuel pressure in the opposite direction. and, in the closed position of the needle valve, plunges into the nozzle formed in the nozzle body downstream of the seat part and creates a restricted flow cross-section for the fuel with the nozzle wall during the pre-injection stroke of the needle valve. In a fuel injection nozzle for an internal combustion engine, the fuel injection nozzle for an internal combustion engine is provided with a throttle pin that limits the speed of the needle valve and means that dramatically increase the closing force acting on the needle valve at the beginning of the remaining stroke of the needle valve corresponding to the main injection. b) Said means which become effective at the start of the main injection for increasing the closing force consist of a mechanical spring element 30, the force of the spring element 30 acting in the closing direction during the pre-stroke of the needle valve 18 or the needle valve 1;
During the remaining stroke of the needle valve 8, the force acting in the opposite direction to the closing direction is received by the stopper 12 fixed in place, and (b) the cross section of the throttle pin 60 closes the needle valve 18. 1. A fuel injection nozzle for an internal combustion engine, characterized in that the part of the throttle pin covered by the nozzle wall at the position tapers toward the end face on the combustion chamber side. 2. The nozzle body 10 is fastened to the nozzle holder 16 via an intermediate plate 12, the intermediate plate limits the entire stroke of the needle valve 18 by the shoulder of the needle valve, and the mechanical spring member 18 closing springs 28 coaxially surrounding the second
This coil spring 30 consists of a coil spring 30 of
2. A fuel injection nozzle as claimed in claim 1, characterized in that the force acting in the closing direction of the needle valve (18) is received by the intermediate plate during the prestroke of the needle valve (18). 3. A second helical spring 30 is supported on the intermediate plate 12 via a ring body 46, which ring body is movably guided in the pressure piece 38 of the needle valve 18 and in the closed position of the needle valve 18. 3. A fuel injection nozzle as claimed in claim 2, characterized in that it rests on the intermediate plate (12) by its outer edge which radially overlies the pressure piece (38). 4. Any one of claims 1 to 3, wherein the narrow cross section of the throttle pin 60 is formed by a flat portion 62 formed on the throttle pin 60 at an angle with respect to the throttle pin axis 64. The fuel injection nozzle according to item 1. 5 The narrow cross section of the throttle pin 60a is
Any one of claims 1 to 3, characterized in that the throttle pin is formed by at least one step-shaped flat part 70, 72 recessed in the throttle pin.
Fuel injection nozzle as described in section. 6 The narrow cross section of the throttle pin 60a is
Claims 1 to 3 characterized in that it is formed by at least two plane parts (72, 74) arranged on the outer periphery of the throttle pin such that they are offset from each other in the circumferential direction and begin in mutually different transverse planes.
The fuel injection nozzle according to any one of the preceding items. 7 so that at least a portion of the throttle pin 60, 60a remains within the nozzle 24 during the entire stroke of the needle valve 18, 18a, and the final flow cross-section of the nozzle 24 corresponding to the main injection is within the throttle pin 60.
, 60a, at least one flat portion 62, 72,
7. Fuel injection nozzle according to claim 4, characterized in that the throttle pins (60, 60a) are formed so as to be formed and defined by 74.
JP1988102086U 1987-08-03 1988-08-02 Fuel injection nozzle for internal combustion engine Expired - Lifetime JPH0649896Y2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873725618 DE3725618C2 (en) 1987-08-03 1987-08-03 Fuel injection nozzle for internal combustion engines
DE3725618.1 1987-08-03

Publications (2)

Publication Number Publication Date
JPS6436565U true JPS6436565U (en) 1989-03-06
JPH0649896Y2 JPH0649896Y2 (en) 1994-12-14

Family

ID=6332915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988102086U Expired - Lifetime JPH0649896Y2 (en) 1987-08-03 1988-08-02 Fuel injection nozzle for internal combustion engine

Country Status (2)

Country Link
JP (1) JPH0649896Y2 (en)
DE (1) DE3725618C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0281948A (en) * 1988-09-19 1990-03-22 Diesel Kiki Co Ltd Fuel injection valve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2857670B1 (en) * 2013-10-04 2018-12-12 Continental Automotive GmbH Fuel injector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56173757U (en) * 1980-05-27 1981-12-22
JPS5987272A (en) * 1982-10-20 1984-05-19 ル−カス・インダストリ−ズ・パブリツク・リミテツド・カンパニ− Fuel injection nozzle
JPS59142470U (en) * 1983-03-16 1984-09-22 三菱自動車工業株式会社 fuel injection valve
JPS6090981A (en) * 1983-07-22 1985-05-22 ダイムラ−−ベンツ　アクチエンゲゼルシヤフト Throttle pistol nozzle for injecting fuel to internal combustion engine, especially, front engine
JPS61129458A (en) * 1984-11-27 1986-06-17 Mazda Motor Corp Fuel injection nozzle for diesel engine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2235083A1 (en) * 1972-07-18 1974-01-31 Bosch Gmbh Robert FUEL INJECTION NOZZLE FOR COMBUSTION MACHINES
DE2822675A1 (en) * 1978-05-24 1979-11-29 Daimler Benz Ag Compression ignition engine injector - has two symmetrically situated flats on pintle
DE3105671A1 (en) * 1981-02-17 1982-09-02 Robert Bosch Gmbh, 7000 Stuttgart "FUEL INJECTION NOZZLE"
DE8104272U1 (en) * 1981-02-17 1981-08-06 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION NOZZLE
DE3113755C2 (en) * 1981-04-04 1983-09-01 Daimler-Benz Ag, 7000 Stuttgart Throttle pin nozzle for injecting fuel into the combustion chamber of an internal combustion engine
DE3118485C2 (en) * 1981-05-09 1986-12-04 Daimler-Benz Ag, 7000 Stuttgart Fuel injector for internal combustion engines
DE3342477A1 (en) * 1983-11-24 1985-01-24 Daimler-Benz Ag, 7000 Stuttgart Injection device for a secondary combustion chamber internal combustion engine
DE3426951A1 (en) * 1984-07-21 1986-01-30 Daimler-Benz Ag, 7000 Stuttgart Throttle pintle nozzle for an air-compressing injection internal combustion engine, especially a precombustion chamber engine
DE3604907A1 (en) * 1986-02-17 1987-08-20 Bosch Gmbh Robert FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56173757U (en) * 1980-05-27 1981-12-22
JPS5987272A (en) * 1982-10-20 1984-05-19 ル−カス・インダストリ−ズ・パブリツク・リミテツド・カンパニ− Fuel injection nozzle
JPS59142470U (en) * 1983-03-16 1984-09-22 三菱自動車工業株式会社 fuel injection valve
JPS6090981A (en) * 1983-07-22 1985-05-22 ダイムラ−−ベンツ　アクチエンゲゼルシヤフト Throttle pistol nozzle for injecting fuel to internal combustion engine, especially, front engine
JPS61129458A (en) * 1984-11-27 1986-06-17 Mazda Motor Corp Fuel injection nozzle for diesel engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0281948A (en) * 1988-09-19 1990-03-22 Diesel Kiki Co Ltd Fuel injection valve

Also Published As

Publication number Publication date
JPH0649896Y2 (en) 1994-12-14
DE3725618C2 (en) 2002-11-07
DE3725618A1 (en) 1989-02-23

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