JPH0141828B2 - - Google Patents
Info
- Publication number
- JPH0141828B2 JPH0141828B2 JP55013765A JP1376580A JPH0141828B2 JP H0141828 B2 JPH0141828 B2 JP H0141828B2 JP 55013765 A JP55013765 A JP 55013765A JP 1376580 A JP1376580 A JP 1376580A JP H0141828 B2 JPH0141828 B2 JP H0141828B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle needle
- fuel
- hole
- injection valve
- notch
- 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.)
- Expired
Links
- 239000000446 fuel Substances 0.000 claims description 41
- 238000002347 injection Methods 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 description 8
- 238000007789 sealing Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
- F02M51/0675—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
- F02M51/0678—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages all portions having fuel passages, e.g. flats, grooves, diameter reductions
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ノズルニードルを有する電磁的に操
作される内燃機関用燃料噴射弁であつて、前記ノ
ズルニードルが、当て付けシヨルダを有していて
かつ該当て付けシヨルダの流れ方向で見て上流で
接続ケーシングに固定的に配置された当て付け板
の貫通孔を半径方向の遊びを有して貫通してお
り、しかも該貫通孔と当て付け板の外周との間に
切欠き部が形成されており、該切欠き部の内径
が、この切欠き部の範囲におけるノズルニードル
の範囲の直径より大きい形式のものに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electromagnetically operated fuel injection valve for an internal combustion engine having a nozzle needle, wherein the nozzle needle has an abutting shoulder and a fuel injection valve for an internal combustion engine. It passes with radial play through the through hole of the abutment plate which is fixedly arranged in the connection casing upstream of the abutment shoulder when viewed in the flow direction, and furthermore, there is a gap between the through hole and the abutment plate. A cutout is formed between the outer periphery and the inner diameter of the cutout is larger than the diameter of the nozzle needle in the range of the cutout.
従来の技術
前述の形式の公知の内燃機関用燃料噴射弁にお
いては、ノズルニードルの操作によつて惹起され
る燃料噴射弁内の燃料の圧力振動が、貫通孔とノ
ズルニードルの範囲との間の半径方向の遊び及び
切欠き部によつて減少されるようにはなつている
が、しかしこのような半径方向の遊び及び切欠き
部だけでは圧力振動を迅速に、しかも十分に減少
することはできず、従つてとりわけ燃料噴射弁の
開放時間が短い場合、要するに噴射量がわずかで
ある場合には、噴射された燃料料と燃料噴射弁の
開放時間との間に不都合な関係、つまり特性曲線
が直線にならない関係が生じる。PRIOR ART In known fuel injection valves for internal combustion engines of the above-mentioned type, pressure oscillations of the fuel in the fuel injection valve, caused by the operation of the nozzle needle, cause an increase in the pressure between the through hole and the area of the nozzle needle. Radial play and cutouts are intended to reduce pressure oscillations, but such radial play and cutouts alone cannot quickly and sufficiently reduce pressure oscillations. Therefore, especially when the opening time of the fuel injector is short, i.e. when the injection quantity is small, there is an unfavorable relationship between the injected fuel and the opening time of the fuel injection valve, i.e. a characteristic curve. A relationship that is not linear occurs.
発明が解決しようとする課題
本発明の課題は、ノズルニードルの操作によつ
て生じる圧力振動を迅速に、しかも十分に減少す
ることによつて、噴射量がわずかである場合に
も、噴射された燃料量と燃料噴射弁の開放時間と
の間に、特性曲線が直線になるような関係が得ら
れるように前述の形式の燃料噴射弁を改良するこ
とである。Problem to be Solved by the Invention An object of the present invention is to quickly and sufficiently reduce the pressure vibrations caused by the operation of the nozzle needle, so that even when the amount of injection is small, the The object of the present invention is to improve the above-mentioned type of fuel injection valve so that a linear characteristic curve is obtained between the fuel quantity and the opening time of the fuel injection valve.
課題を解決するための手段
前述の課題を解決するために講じた手段は、当
て付け板が貫通孔及び切欠き部の他に流れ開口を
有しており、該流れ開口によつて当て付け板の上
流の燃料範囲と、当て付け板の下流の燃料範囲と
が互いに接続されていることにある。Means for Solving the Problems The means taken to solve the above-mentioned problems is that the abutting plate has a flow opening in addition to the through hole and the notch, and the abutting plate The fuel region upstream of the fuel region and the fuel region downstream of the abutment plate are connected to each other.
発明の効果
発明によつて得られる利点は、当て付け板にお
ける流過横断面積を拡大することによつて申し分
ない流れ状態が得られかつ圧力振動が迅速かつ十
分に減少され、このことによつてとりわけ燃料噴
射弁の開放時間が短い場合に、噴射された燃料量
と噴射弁の開放時間とによつて形成される特性曲
線が直線になることである。Effects of the invention The advantages obtained by the invention are that, by enlarging the flow cross-sectional area at the butt plate, satisfactory flow conditions are obtained and pressure oscillations are rapidly and significantly reduced; Particularly if the opening time of the fuel injection valve is short, the characteristic curve formed by the amount of fuel injected and the opening time of the injection valve is a straight line.
実施例 以下に図示の実施例につき本発明を説明する。Example The invention will be explained below with reference to the exemplary embodiments shown.
第１図に示された内燃機関の燃料噴射装置のた
めの燃料噴射弁は弁ケーシング１を有しており、
該弁ケーシング内でコイル支持体２に電磁コイル
３が配置されている。電磁コイル３は、プラスチ
ツクリング５内に埋設されている差込み接続部４
を介して給電されている。 The fuel injection valve for a fuel injection system of an internal combustion engine shown in FIG. 1 has a valve casing 1,
An electromagnetic coil 3 is arranged on a coil support 2 in the valve housing. The electromagnetic coil 3 has a plug connection 4 embedded in the plastic ring 5.
Powered through.
電磁コイル３に非磁性のスリーブ６が配置され
ており、該スリーブは一面では、燃料たとえばガ
ソリンを供給する接続管片７と、かつ他面では弁
ケーシング１の一部分を形成するノズル体９のた
めの接続ケーシング８とシールされて溶接あるい
ははんだ付けされている。接続ケーシング８が円
筒状の突出部１０を有しており、該突出部の内径
及び外径は非磁性のスリーブ６と合致しており、
従つて両方の部材の間の結合個所は段部がない。 A non-magnetic sleeve 6 is arranged on the electromagnetic coil 3, which sleeve is designed on the one hand for a connection piece 7 for supplying fuel, for example gasoline, and on the other hand for a nozzle body 9 forming part of the valve housing 1. The connection casing 8 is sealed and welded or soldered. The connecting casing 8 has a cylindrical protrusion 10, the inner and outer diameters of which match the non-magnetic sleeve 6,
The connection point between the two parts is therefore step-free.
スリーブ６内に位置する接続管片７の端面１１
と、弁を正確に調節するために所定の厚さを有し
ていて接続ケーシング８の内側シヨルダ１３に座
着されている当て付け板１２との間に、燃料噴射
弁の可動子１４が設けられている。可動子１４は
耐腐食性の磁性材料から成つている。可動子１４
と、接続管片７内にこの接続管片の収縮によつて
固定された管挿入体１５との間に、可動子１４に
作用する圧縮ばね１６が配置されている。他方の
側では可動子１４にノズルニードル１７が固定さ
れており、この場合ノズルニードルは環状リブ端
部１８で以て可動子１４の孔１９内に締付けられ
ている。 End face 11 of the connecting tube piece 7 located inside the sleeve 6
A movable member 14 of the fuel injection valve is provided between the base plate 12 and the abutment plate 12, which has a predetermined thickness and is seated on the inner shoulder 13 of the connection casing 8 in order to accurately adjust the valve. It is being The mover 14 is made of a corrosion-resistant magnetic material. Mover 14
A compression spring 16 acting on the armature 14 is arranged between the tube insert 15 and the tube insert 15 which is fixed in the connecting tube piece 7 by contraction of this connecting tube piece. On the other side, a nozzle needle 17 is fastened to the armature 14, which is clamped with an annular rib end 18 into a bore 19 of the armature 14.
ノズルニードル１７は半径方向の遊びを有して
当て付け板１２における貫通孔２０を貫通し、次
いでノズル体９における孔２１を貫通し、さらに
ニードルピン２２がノズル体９から突出する。ノ
ズル体の内側シヨルダ２３に円すい形端面２４が
形成されており、該端面２４がノズルニードル１
７における外側円すい面２５と一緒に固有の燃料
噴射弁２４／２５を形成する。ノズル体９とニー
ドルピン２２とが保護スリーブ２６によつて取囲
まれており、該保護スリーブはプラスチツクある
いは断熱性の材料から成つており、かつノズル体
９に固着的に差し嵌められている。ノズルニード
ル１７及び可動子１４の長さは、外側円すい面２
５から出発して、可動子１４が、弁が操作されな
いさいに接続管片の端面１１に対して作業ギヤツ
プＡを形成するように設計されている。 The nozzle needle 17 passes with radial play through a through hole 20 in the abutment plate 12 and then through a hole 21 in the nozzle body 9, and a needle pin 22 projects from the nozzle body 9. A conical end surface 24 is formed on the inner shoulder 23 of the nozzle body, which end surface 24 is formed on the nozzle needle 1.
Together with the outer conical surface 25 at 7, it forms its own fuel injection valve 24/25. Nozzle body 9 and needle pin 22 are surrounded by a protective sleeve 26, which is made of plastic or a heat-insulating material and is firmly inserted into nozzle body 9. The length of the nozzle needle 17 and the movable element 14 is the length of the outer conical surface 2.
Starting from 5, the armature 14 is designed in such a way that it forms a working gap A with respect to the end face 11 of the connecting tube when the valve is not actuated.
噴射弁のシール個所２７がノズル体の外側シヨ
ルダ２８に形成されており、しかもシール個所は
少なくとも１つの、たとえば３つのリング状のシ
ール縁２９を備えており、該シール縁に対して、
ニードルピン２２に向かう接続ケーシング８の外
側縁３０がたとえばつば出し工具あるいは圧延工
具によつて曲げられている。このばあい硬化され
たシール縁２９は軟らかい接続ケーシング８の内
壁に支持され、従つて確実な金属性のシールが達
成される。 A sealing point 27 of the injection valve is formed on the outer shoulder 28 of the nozzle body, and the sealing point has at least one, for example three, ring-shaped sealing edges 29, to which
The outer edge 30 of the connecting casing 8 facing the needle pin 22 is bent, for example by means of a flanging tool or a rolling tool. In this case, the hardened sealing edge 29 rests on the inner wall of the soft connection casing 8, so that a reliable metallic seal is achieved.
燃料噴射弁の別の２つのシール個所３１，３２
が非磁性のスリーブ６に設けられている。これら
のシール個所も金属的であり、かつこのことによ
つて確実でありかつ老化防止されている。シール
個所３１，３２は溶接あるいははんだ付けで製造
されるかあるいは軟鉄リング又は赤銅リングによ
つて形成される。 Two other seal points 31, 32 of the fuel injection valve
is provided in the non-magnetic sleeve 6. These sealing points are also metallic and are thereby reliable and anti-aging. The sealing points 31, 32 are produced by welding or soldering or are formed by soft iron rings or red copper rings.
燃料噴射弁内にシールを破壊する腐食巣が形成
されないために、弁には貫流されない室は排除さ
れている。このことは、ノズルニードル１７が貫
通孔を有しておらず、ノズルニードル１７が孔２
１内で案内されていてかつそれにもかかわらず燃
料のための軸方向通路を解放する２つの方形部３
３，３４を有していることによつて達成される。
このような形式で燃料はノズルニードル１７の外
周面に沿つて直接流れ、従つてノズルニードルは
周面及び方形部の周囲において外側を燃料が流れ
るようになつている。 In order to prevent the formation of corrosion cavities in the fuel injection valve that would destroy the seals, chambers that are not flowed through the valve are excluded. This means that the nozzle needle 17 does not have a through hole, and the nozzle needle 17 has no through hole.
two square parts 3 guided in 1 and nevertheless opening an axial passage for the fuel;
This is achieved by having 3,34.
In this manner, the fuel flows directly along the outer periphery of the nozzle needle 17, so that the nozzle needle is adapted to have an external flow of fuel around the periphery and square section.
貫通孔２０と当て付け板１２の周囲との間に切
欠き部３７が形成されており、該切欠き部の内径
は、環状リブ端部１８とノズルニードル１７の当
て付けシヨルダ３９との間のノズルニードル１７
の相応する範囲３８におけるノズルニードル１７
の直径より大きい。電磁コイルの励磁状態で、可
動子１４はノズルニードル１７の解放方向で圧縮
ばね１６の力に抗して運動されかつ当て付けシヨ
ルダ３９が当て付け板１２に当て付けられる。ノ
ズルニードル１７の操作によつて惹起される燃料
噴射弁内の燃料の圧力振動は、貫通孔２０とノズ
ルニードル１７の範囲３８との間の半径方向の遊
び及び切欠き部３７によつては迅速に、しかも十
分には減少されず、従つてこの圧力振動により、
とりわけ燃料噴射弁の開放時間が短いばあいに、
噴射された燃料量と燃料噴射弁の開放時間との間
に不都合な関係（特性曲線が直線にならない）が
生じる。それ故に本発明による当て付け板１２が
少なくとも２つの流れ開口４０を、第２図におい
てはたとえば３つの流れ開口を備えており、しか
も該流れ開口は、当て付け板１２の上流の燃料範
囲４１と、当て付け板１２の下流の燃料範囲４２
とを互いに接続しており、従つて燃料流出のため
に使用されうる全横断面の拡大によつて、ノズル
ニードルの操作によつて生ぜしめられた圧力振動
は迅速に減少されかつ燃料噴射弁の開放時間と噴
射された燃料量との間に、特性曲線が直線になる
ような関係が生じる。 A notch 37 is formed between the through hole 20 and the periphery of the abutting plate 12, and the inner diameter of the notch is equal to that between the annular rib end 18 and the abutting shoulder 39 of the nozzle needle 17. Nozzle needle 17
nozzle needle 17 in a corresponding area 38 of
larger than the diameter of In the energized state of the electromagnetic coil, armature 14 is moved in the direction of release of nozzle needle 17 against the force of compression spring 16 and abutment shoulder 39 abuts against abutment plate 12 . The pressure oscillations of the fuel in the fuel injector caused by the operation of the nozzle needle 17 can be quickly suppressed by the radial play between the through hole 20 and the region 38 of the nozzle needle 17 and by the notch 37. , and is not sufficiently reduced, so that due to this pressure oscillation,
Especially when the opening time of the fuel injector is short,
An unfavorable relationship (the characteristic curve is not linear) arises between the amount of fuel injected and the opening time of the fuel injector. The abutment plate 12 according to the invention therefore has at least two flow openings 40, for example three flow openings in FIG. , a fuel region 42 downstream of the butt plate 12
Due to the enlargement of the total cross-section which connects the two to each other and which can thus be used for fuel outflow, the pressure oscillations caused by the operation of the nozzle needle are quickly reduced and the pressure oscillations of the fuel injection valve are quickly reduced. A relationship occurs between opening time and injected fuel quantity such that the characteristic curve is linear.
第１図は本発明による燃料噴射弁の縦断面図、
第２図は本発明による当て付け板の平面図であ
る。
１……弁ケーシング、２……コイル支持体、３
……電磁コイル、４……差込み接続部、５……プ
ラスチツクリング、６……スリーブ、７……接続
管片、８……接続ケーシング、９……ノズル体、
１０……突出部、１１……端面、１２……当て付
け板、１３……内側シヨルダ、１４……可動子、
１５……管挿入体、１６……圧縮ばね、１７……
ノズルニードル、１８……環状リブ端部、１９…
…孔、２０……貫通孔、２１……孔、２２……ニ
ードルピン、２３……内側シヨルダ、２４……円
すい形端面、２５……外側円すい面、２６……保
護スリーブ、２７……シール個所、２８……外側
シヨルダ、２９……シール縁、３０……外側縁、
３１，３２……シール個所、３３，３４……方形
部、３７……切欠き部、３８……範囲、３９……
当て付けシヨルダ、４０……流れ開口、４１，４
２……燃料範囲。
FIG. 1 is a longitudinal sectional view of a fuel injection valve according to the present invention;
FIG. 2 is a plan view of the abutment plate according to the invention. 1...Valve casing, 2...Coil support, 3
... Electromagnetic coil, 4 ... Plug-in connection part, 5 ... Plastic ring, 6 ... Sleeve, 7 ... Connection tube piece, 8 ... Connection casing, 9 ... Nozzle body,
10...Protrusion part, 11...End face, 12...Abutting plate, 13...Inner shoulder, 14...Movable element,
15...Tube insert, 16...Compression spring, 17...
Nozzle needle, 18... Annular rib end, 19...
... Hole, 20 ... Through hole, 21 ... Hole, 22 ... Needle pin, 23 ... Inner shoulder, 24 ... Conical end surface, 25 ... Outer conical surface, 26 ... Protective sleeve, 27 ... Seal 28...outer shoulder, 29...seal edge, 30...outer edge,
31, 32... Seal location, 33, 34... Square portion, 37... Notch portion, 38... Range, 39...
Abutting shoulder, 40...Flow opening, 41,4
2...Fuel range.
Claims (1)
内燃機関用燃料噴射弁であつて、前記ノズルニー
ドル１７が、当て付けシヨルダ３９を有していて
かつ該当て付けシヨルダの流れ方向で見て上流で
接続ケーシング８に固定的に配置された当て付け
板１２の貫通孔２０を半径方向の遊びを有して貫
通しており、しかも該貫通孔と当て付け板の外周
との間に切欠き部３７が形成されており、該切欠
き部の内径が、この切欠き部の範囲におけるノズ
ルニードルの範囲３８の直径より大きい形式のも
のにおいて、前記当て付け板１２が貫通孔２０及
び切欠き部３７の他に流れ開口４０を有してお
り、該流れ開口によつて当て付け板１２の上流の
燃料範囲４１と、当て付け板１２の下流の燃料範
囲４２とが互いに接続されていることを特徴とす
る電磁的に操作される内燃機関用燃料噴射弁。1 An electromagnetically operated fuel injection valve for an internal combustion engine having a nozzle needle, the nozzle needle 17 having an abutment shoulder 39 and connected upstream of the abutment shoulder, viewed in the flow direction. It passes through the through hole 20 of the abutting plate 12 fixedly disposed on the casing 8 with play in the radial direction, and furthermore, a notch 37 is formed between the through hole and the outer periphery of the abutting plate. In the case where the inner diameter of the notch is larger than the diameter of the range 38 of the nozzle needle in the range of the notch, the abutment plate 12 is connected to the through hole 20 and the notch 37 is characterized in that it has a flow opening 40 by which a fuel region 41 upstream of the butt plate 12 and a fuel region 42 downstream of the butt plate 12 are connected to each other. Electromagnetically operated fuel injection valve for internal combustion engines.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792905099 DE2905099A1 (en) | 1979-02-10 | 1979-02-10 | Electromagnetic fuel injection valve - ensures that quantity of fuel injected into engine is linearly dependent on time for which it is open |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55107061A JPS55107061A (en) | 1980-08-16 |
| JPH0141828B2 true JPH0141828B2 (en) | 1989-09-07 |
Family
ID=6062635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1376580A Granted JPS55107061A (en) | 1979-02-10 | 1980-02-08 | Electro magnetically operated fuel injection valve for internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS55107061A (en) |
| DE (1) | DE2905099A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6042213Y2 (en) * | 1981-05-14 | 1985-12-24 | 愛三工業株式会社 | electromagnetic injector |
| DE3533521A1 (en) * | 1985-09-20 | 1987-04-02 | Bosch Gmbh Robert | ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE |
| JPS6365856U (en) * | 1986-10-17 | 1988-04-30 | ||
| JPH0515571Y2 (en) * | 1987-02-16 | 1993-04-23 | ||
| JPS63134168U (en) * | 1987-02-25 | 1988-09-02 | ||
| DE4018317C1 (en) * | 1990-06-08 | 1991-09-26 | Robert Bosch Gmbh, 7000 Stuttgart, De |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5183930A (en) * | 1974-12-12 | 1976-07-22 | Bosch Gmbh Robert |
-
1979
- 1979-02-10 DE DE19792905099 patent/DE2905099A1/en active Granted
-
1980
- 1980-02-08 JP JP1376580A patent/JPS55107061A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5183930A (en) * | 1974-12-12 | 1976-07-22 | Bosch Gmbh Robert |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2905099A1 (en) | 1980-08-14 |
| JPS55107061A (en) | 1980-08-16 |
| DE2905099C2 (en) | 1987-06-19 |
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