JPH0816469B2 - Fuel injection device for internal combustion engines - Google Patents

Fuel injection device for internal combustion engines

Info

Publication number
JPH0816469B2
JPH0816469B2 JP60230077A JP23007785A JPH0816469B2 JP H0816469 B2 JPH0816469 B2 JP H0816469B2 JP 60230077 A JP60230077 A JP 60230077A JP 23007785 A JP23007785 A JP 23007785A JP H0816469 B2 JPH0816469 B2 JP H0816469B2
Authority
JP
Japan
Prior art keywords
pump
distribution
fuel
pump piston
cylinder
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 - Lifetime
Application number
JP60230077A
Other languages
Japanese (ja)
Other versions
JPS6198959A (en
Inventor
ルードルフ・バビツカ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of JPS6198959A publication Critical patent/JPS6198959A/en
Publication of JPH0816469B2 publication Critical patent/JPH0816469B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
    • B23K35/327—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C comprising refractory compounds, e.g. carbides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Coating By Spraying Or Casting (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、特許請求の範囲第１項の上位概念に記載の
形式の内燃機関用の燃料噴射装置に関する。Description: FIELD OF THE INVENTION The present invention relates to a fuel injection device for an internal combustion engine of the type described in the preamble of the first claim.

従来の技術 前記形式の公知の燃料噴射装置（ドイツ連邦共和国特
許出願公開第3248713号明細書）の場合には、両ポンプ
作業室は互いに分離されていてかつそれぞれ個々に交互
に圧力導管と制御弁とを介して吸込み行程時に燃料調量
装置に又は搬送行程時に分配部材に接続される。この場
合同時に他方のポンプ作業室が制御弁と圧力導管とを介
して逃し室に接続される。上記公知の装置は特にこの装
置において使用される制御弁に基づいて極めて高価なも
のとなつている。2. Description of the Prior Art In the case of a known fuel injection device of the type mentioned above (German Patent Application DE 3248713 A1), the two pump working chambers are separated from one another and each of them individually alternates with a pressure conduit and a control valve. Is connected to the fuel metering device during the intake stroke or to the distribution member during the transfer stroke. At the same time, the other pump work chamber is connected to the relief chamber via the control valve and the pressure line. The known device is extremely expensive, especially because of the control valves used in the device.

問題点を解決するための手段 本発明の構成は、特許請求の範囲第１項の特徴部分に
記載されている。Means for Solving the Problems The constitution of the present invention is described in the characterizing part of claim 1.

実施例 第１図で図示されたラジアルピストン・分配噴射ポン
プのばあいケーシング１内には分配部材３を回転可能に
支承している分配シリンダ２が設けられている。分配シ
リンダから突出した分配部材の端部４では分配部材は大
径区分を有していて、この大径区分は第１の半径方向の
平面６内に、直径方向で向かい合つて位置する半径方向
にのびる２つの第１のポンプシリンダ７を有している。
第１の半径方向の平面に対して平行な第２の半径方向の
平面８内には更に直径方向で向かい合つて位置する半径
方向にのびる２つの第２のポンプシリダ９が直径を拡大
された分配部材の端部４内に配置されている。更にこの
端部はポンプ駆動軸10に連結又は伝力接続されている。Embodiment In the case of the radial piston / dispensing injection pump shown in FIG. 1, a distribution cylinder 2 rotatably supporting a distribution member 3 is provided in a casing 1. At the end 4 of the distribution member projecting from the distribution cylinder, the distribution member has a large-diameter section which lies diametrically in the first radial plane 6. It has two first pump cylinders 7 which extend into
In the second radial plane 8 parallel to the first radial plane, two radially extending second pump cylinders 9 located diametrically opposite each other are also provided with an enlarged diameter distribution. Located in the end 4 of the member. Furthermore, this end is connected or power-transmitted to the pump drive shaft 10.

それぞれの第１のポンプシリンダ７内には第１のポン
プピストン12がかつそれぞれの第２のポンプシリンダ２
内には第２のポンプピストン13が移動可能に支承されて
いる。ポンプピストンは端面側でポンプシリンダ内にお
いて第１のポンプ作業室14もしくは第２のポンプ作業室
15を形成していて、これらポンプ作業室は分配部材内の
横通路16もしくは横通路17によつて互いに接続されてい
る。両横通路は分配部材内で軸方向にのびる圧力導管18
を介して常時互いに接続されている。圧力導管18は軸方
向で第２の横通路17から第１の横通路16に通じていてか
つ更に分配シリンダ内に支承された袋孔として形成され
た分配部材部分内に達している。有利には分配部材の回
転数当りのポンプピストンの吸込い行程数および吸込み
行程分割に相応して、圧力導管18から半径方向の通路19
が分岐している。半径方向の通路19は分配部材の周面に
配置された環状溝20に連通していて、この環状溝は分配
シリンダ２に連通する燃料供給導管22に接続されてい
る。更に圧力導管18からは角度α＝135゜だけ互いにず
らされた２つの半径方向の通路23,24が分岐していて、
これら通路は分配部材の周面に設けられた第１の分配開
口25および第２の分配開口26に連通している。分配開口
が位置する半径方向平面内には分配シリンダから噴射導
管27が分岐していて、該噴射導管27は所属の内燃機関の
補給されるシリンダ数およびシリンダ分割に相応して周
面に分配されて配置されている。噴射導管はポンプケー
シングから概略的に図示された燃料噴射弁28に通じてい
る。図示の実施例では燃料噴射ポンプは４気筒４サイク
ル列型内燃機関に燃料を供給するので、分配部材の回転
ごとに90゜角度間隔で互いに配置された４本の噴射導管
A,B,C,Dに燃料が供給されねばならない。このことは第
２図で示されている。In each first pump cylinder 7 there is a first pump piston 12 and in each second pump cylinder 2
A second pump piston 13 is movably mounted therein. The pump piston is located on the end face side in the pump cylinder in the first pump working chamber 14 or the second pump working chamber.
15 form the pump working chambers which are connected to each other by a lateral passage 16 or a lateral passage 17 in the distribution member. Both lateral passages are pressure conduits 18 that extend axially within the distribution member.
Always connected to each other via. The pressure conduit 18 extends axially from the second transverse passage 17 into the first transverse passage 16 and further into a distribution member part formed as a blind bore which is mounted in the distribution cylinder. Radial passages 19 from the pressure conduit 18 are preferably in accordance with the number of suction strokes of the pump piston and the number of suction stroke divisions per revolution of the distributor.
Is branched. The radial passage 19 communicates with an annular groove 20 arranged on the peripheral surface of the distribution member, which annular groove is connected to a fuel supply conduit 22 which communicates with the distribution cylinder 2. Furthermore, from the pressure conduit 18, two radial passages 23, 24, which are offset from each other by an angle α = 135 °, branch off,
These passages communicate with a first distribution opening 25 and a second distribution opening 26 provided on the peripheral surface of the distribution member. In the radial plane in which the distribution openings are located, the injection cylinders 27 branch off from the distribution cylinders, which are distributed over the peripheral surface in accordance with the number of cylinders supplied and the cylinder division of the associated internal combustion engine. Are arranged. The injection conduit leads from the pump casing to a schematically illustrated fuel injection valve 28. In the illustrated embodiment, the fuel injection pump supplies fuel to a 4-cylinder 4-cycle train internal combustion engine so that four injection conduits are arranged at 90 ° angular intervals for each rotation of the distribution member.
Fuel must be supplied to A, B, C, D. This is shown in FIG.

ポンプピストンの駆動はローラ30を介して行なわれ、
このローラはローラロツドによつて支持されかつポンプ
ピストンを半径方向で取り囲むカムリング31の１つ又は
２つのカム面に沿つて滑走する。このばあいポンプピス
トンおよびローラは圧縮ばね32によつてカム面33に保持
される。この圧縮ばねはポンプピストンとポンプシリン
ダの内側端面との間に緊縮されている。The drive of the pump piston is performed via the roller 30,
The roller slides along one or two cam faces of a cam ring 31 supported by a roller rod and radially surrounding the pump piston. In this case, the pump piston and the roller are held on the cam surface 33 by the compression spring 32. The compression spring is compressed between the pump piston and the inner end surface of the pump cylinder.

燃料供給導管22内には弁34が配置されていて、この弁
によつて噴射される燃料量が制御される。このばあい前
記弁は制御機械35によつて制御され、このばあい弁は電
気機械的な弁として直接制御されるか又はサーボ弁とし
て構成できる。有利には前記弁は迅速かつ正確な切換え
過程のために、冒頭に述べた公知技術によつて明らかに
されているのと同じ形式で構成することができる。しか
しながら要求に応じて異なる構成の圧電弁又は電磁弁を
使用することができる。燃料供給導管22は燃料貯蔵タン
ク37から燃料搬送ポンプ36を介して燃料を供給され、こ
のばあい供給圧力は圧力制御弁38を介して調節可能であ
る。A valve 34 is arranged in the fuel supply conduit 22 and controls the amount of fuel injected by this valve. In this case, the valve is controlled by the control machine 35, which can be controlled directly as an electromechanical valve or can be designed as a servo valve. Advantageously, the valve can be constructed in the same manner as disclosed by the prior art mentioned at the outset for a rapid and precise switching process. However, different configurations of piezo valves or solenoid valves can be used if desired. The fuel supply conduit 22 is supplied with fuel from a fuel storage tank 37 via a fuel delivery pump 36, the supply pressure being adjustable via a pressure control valve 38.

第１図では、第２の半径方向の平面内のポンプピスト
ンは実際の位置に対して45゜だけずらされて図示されて
いる。第１の半径方向の平面および第２の半径方向の平
面のポンプピストンの位置は第２図で図示されている。
更に第２図から明らかなように、第１のポンプピストン
12の操作は第２のポンプピストン13の操作前135゜で行
なわれる。このことは、第２図で明らかなように第２の
分配開口より135゜先行した第１の分配開口25の位置に
相応している。このばあいカム面が両半径方向の平面の
ポンプピストンのローラ30に亘つてのびるようにカム面
33の幅が設計されることを前提とする。In FIG. 1, the pump piston in the second radial plane is shown offset by 45 ° with respect to its actual position. The positions of the pump pistons in the first radial plane and the second radial plane are illustrated in FIG.
Further, as is apparent from FIG. 2, the first pump piston
The operation of 12 is carried out 135 ° before the operation of the second pump piston 13. This corresponds to the position of the first dispensing opening 25, which is 135 ° ahead of the second dispensing opening, as can be seen in FIG. In this case, the cam surface is extended so as to extend over the rollers 30 of the pump piston on both radial planes.
It is assumed that 33 widths will be designed.

ポンプ駆動軸10が回転すると、ローラ30がカム面33を
介して案内されかつポンプピストンは往復運動せしめら
れる。ポンプピストンが外向き運動するばあいには燃料
供給導管22は一方の半径方向の通路19に接続されるの
で、弁34の制御に応じて燃料はポンプ作業室14に達す
る。更に燃料搬送のためにポンプピストンはカム面の適
当なカムによつて内向きに移動させられる。このばあい
燃料供給導管22に対する接続又は少なくとも、燃料供給
導管22の開口が閉じられるので、第１のポンプピストン
12によつて押しのけられる燃料は分配開口の１つを介し
て循環して制御される噴射導管の１つ内に搬送されかつ
噴射圧力下で燃料噴射ノズルにおいて流出せしめられ
る。次いで行なわれる第１のポンプピストンの吸込み行
程時には再び燃料が吸込まれかつ次の搬送準備が成され
る。When the pump drive shaft 10 rotates, the roller 30 is guided through the cam surface 33 and the pump piston is reciprocated. During the outward movement of the pump piston, the fuel supply conduit 22 is connected to one radial passage 19, so that fuel reaches the pump working chamber 14 under the control of the valve 34. Furthermore, for fuel delivery, the pump piston is moved inward by means of a suitable cam on the cam surface. In this case, the connection to the fuel supply conduit 22 or at least the opening of the fuel supply conduit 22 is closed so that the first pump piston
The fuel displaced by 12 is circulated through one of the distribution openings into one of the controlled injection conduits and is discharged under injection pressure at the fuel injection nozzle. During the subsequent suction stroke of the first pump piston, the fuel is sucked in again and the next conveyance preparation is made.

噴射ポンプの構成によつて２つのポンプピストン対は
異なる半径方向の平面内に設けられていてかつ互いにず
らされているので、燃料噴射ポンプのばあい４つのシリ
ンダに燃料を供給するため、回転当り４度の搬送を行な
わせしめるように設計されているカム面によつて回転当
り８回の搬送行程を実施できる。第２の分配開口26を介
した噴射導管Ａ内への燃料搬送が終了していると仮定し
て第２図から出発して、時計回り方向で45゜の角度カム
軸が回転した後では第１の分配開口25を介して噴射導管
Ｃ内への燃料噴射が行なわれる。この燃料量は第３図に
相応して第１のポンプピストン12を介して搬送される。
引続き45゜回転した後では第２の分配開口26を介して噴
射導管Ｂ内に、第２のポンプピストン13によつて押しの
けられる主噴射量が搬送される。更に90゜回転した後で
は第２の分配開口26は噴射導管Ｃと合致するので、噴射
導管Ｃにおいて第２のポンプピストン13を介して主噴射
が行なわれ、この主噴射は第１の分配開口25を介した前
噴射後135゜である。これに相応して別のすべての噴射
導管にも燃料が供給される。このばあい第３図ではポン
プピストン位置に関連したカム面33におけるカム39の位
置が明確に図示されている。更に第４図では内燃機関の
ピストンのサイクルが吸込みストロークおよび圧縮スト
ロークによつて示されていて、かつ、第４図から明らか
なように、前噴射Ｖは主噴射Ｈの前270゜のクランク軸
角であり、従つて前噴射は吸込み行程開始時に行なわれ
かつ主噴射は圧縮終了OTの直前である。Due to the configuration of the injection pump, the two pump piston pairs are arranged in different radial planes and are offset from each other, so that in the case of a fuel injection pump, in order to supply fuel to four cylinders, The cam surface, which is designed to carry out 4 times of conveyance, makes it possible to carry out 8 conveyance strokes per rotation. Starting from FIG. 2 and assuming that the fuel transfer into the injection conduit A via the second distribution opening 26 has ended, after the rotation of the camshaft by a 45 ° angle in the clockwise direction, Fuel injection into the injection conduit C takes place via one distribution opening 25. This fuel quantity is conveyed via the first pump piston 12 according to FIG.
After a further 45 ° rotation, the main injection quantity displaced by the second pump piston 13 is conveyed into the injection conduit B via the second distribution opening 26. After a further 90 ° rotation, the second distribution opening 26 coincides with the injection conduit C, so that the main injection takes place in the injection conduit C via the second pump piston 13, which main injection is the first distribution opening. 135 ° after pre-injection via 25. Correspondingly, fuel is also supplied to all other injection conduits. In this case, FIG. 3 clearly shows the position of the cam 39 on the cam surface 33 in relation to the pump piston position. Further, in FIG. 4, the cycle of the piston of the internal combustion engine is shown by the suction stroke and the compression stroke, and as is apparent from FIG. 4, the pre-injection V is the 270 ° crankshaft before the main injection H. Angle, and therefore the pre-injection occurs at the beginning of the suction stroke and the main injection is just before the end of compression OT.

特にデイーゼル内燃機関のばあい前記主噴射は内燃機
関の燃焼室内の装入物を着火させるのに役立つ。従つて
主噴射は着火時点を規定しかつポンプピストンの上死点
に関連して燃焼技術的に正確な時点に行なわれねばなら
ない。このばあい本発明による燃料噴射ポンプにおける
主噴射量は点火が行なわれるように多くされねばならな
い。このばあい前噴射量は矢張り、主噴射時点まで圧縮
された燃料空気混合物の自己点火が行なわれないよう
に、設計されねばならない。前記限界条件を考慮して著
しい燃料噴射量がすでに吸込み段階中にかつ次いで行な
われる圧縮段階中に申し分なく燃焼室の空気充填物と混
合されてひいては良好な燃焼のために準備される。同じ
観点は外部点火式の内燃機関のばあいにも応用可能であ
り、このような内燃機関は、特に部分負荷運転において
不都合な作用を及ぼす混合吸込み量の吸込み絞り調整を
回避して、燃焼室内への直接噴射を以つて作業する。こ
のような内燃機関のばあい状態はデイーゼル内燃機関と
同様である。本発明による前噴射によつて不完全な燃料
燃焼に起因する煤煙発生が減少されかつ内燃機関を運転
すべき回転数限界が上昇させられかつ許容エミツシヨン
限界を維持した上で効率が高められる。更になめらな騒
音の少ない燃焼過程が得られる。Especially in diesel internal combustion engines, the main injection serves to ignite the charge in the combustion chamber of the internal combustion engine. Therefore, the main injection must be defined at the point of ignition and at a combustion-technically correct point in relation to the top dead center of the pump piston. In this case, the main injection quantity in the fuel injection pump according to the present invention must be increased so that ignition is performed. In this case, the pre-injection quantity must be designed so that the compressed fuel-air mixture does not self-ignite until the main injection time. Considering the abovementioned limiting conditions, a significant fuel injection quantity is already well mixed during the intake phase and during the subsequent compression phase, which is admixed with the air filling of the combustion chamber and thus ready for good combustion. The same point of view can be applied to the case of an external ignition type internal combustion engine, and such an internal combustion engine avoids the suction throttle adjustment of the mixed suction amount, which has an adverse effect particularly in partial load operation, and Work with direct injection to. The case of such an internal combustion engine is similar to that of a diesel internal combustion engine. The pre-injection according to the invention reduces soot production due to incomplete fuel combustion, increases the rotational speed limit at which the internal combustion engine must be operated and increases efficiency while maintaining an acceptable emission limit. Furthermore, a smooth and low-noise combustion process can be obtained.

迅速に作業する弁34を介して噴射される燃料量が正確
に制御され、このばあい吸込み行程中の燃料調量量制御
並びに有効な搬送期間制御をこのような弁によつて制御
することができる。搬送期間制御のばあい弁はポンプピ
ストンの吸込み行程中に開放されるので、ポンプ作業室
は完全に燃料によつて充填される。ポンプピストンの次
いで行なわれる搬送行程時には弁の閉鎖によつて搬送開
始が規定されかつ弁の再開放によつて搬送終了が規定さ
れる。このようにして探られたカム区分で搬送が行なわ
れかつ噴射を搬送開始後又は搬送終了後も制御すること
ができる。このばあい記述の燃料噴射装置のばあい単一
の弁だけで、第１のポンプピストン12並びに第２のポン
プピストンによつて燃料噴射を制御するのに十分であ
る。The amount of fuel injected via the fast working valve 34 is precisely controlled, in which case it is possible to control the fuel metering control during the intake stroke as well as the effective transport period control by means of such a valve. it can. In the transfer period control, the valve is opened during the suction stroke of the pump piston, so that the pump working chamber is completely filled with fuel. During the subsequent conveying stroke of the pump piston, the closing of the valve defines the beginning of the conveying and the reopening of the valve defines the ending of the conveying. It is possible to carry out the transportation in the cam section thus searched and control the injection after the transportation starts or after the transportation ends. In the case of the fuel injection device described in this case, a single valve is sufficient to control the fuel injection by means of the first pump piston 12 as well as the second pump piston.

発明の作用効果 本発明による燃料噴射装置の利点は、燃料噴射装置を
著しく簡単に構成でき、かつ、迅速に切換えられる調量
装置を使用した上で角度関連構造によつて決められた正
確な燃料前噴射および燃料主噴射が所定の角度間隔で得
られるということにある。このばあいカム形態によつて
個個の部分噴射の搬送率を互いに異なつて決めかつ最適
なものとすることができる。Advantages of the fuel injection device according to the invention are that the fuel injection device can be constructed in a very simple manner and uses a metering device which can be switched quickly and which is determined by the angle-related structure. The pre-injection and the main fuel injection are obtained at predetermined angular intervals. In this case, depending on the cam form, the transport rates of the individual partial injections can be determined differently and optimized.

【図面の簡単な説明】[Brief description of drawings]

図面は本発明の実施例を示すものであつて、第１図はラ
ジアルピストン・燃料分配噴射ポンプの断面図、第２図
は第１図による噴射ポンプの分配部材の断面図、第３図
は第１図による噴射ポンプによるポンプピストン対のポ
ンプピストン位置を示した図、第４図は噴射範囲に亘る
図表である。 １……ケーシング、２……分配シリンダ、３……分配部
材、４……端部、6,8……半径方向の平面、7,9……ポン
プシリンダ、10……ポンプ駆動軸、12,13……ポンプピ
ストン、14,15……ポンプ作業室、16,17……横通路、18
……圧力導管、19,23,24……半径方向の通路、20……環
状溝、22……燃料供給導管、25,26……分配開口、27…
…噴射開口、28……燃料噴射弁、30……ローラ、31……
カムリング、32……圧縮ばね、33……カム面、34……
弁、35……制御機械、36……燃料搬送ポンプ、37……燃
料貯蔵タンク、38……圧縮制御弁、39……カム。The drawings show an embodiment of the present invention. FIG. 1 is a sectional view of a radial piston / fuel distribution injection pump, FIG. 2 is a sectional view of a distribution member of the injection pump according to FIG. 1, and FIG. The figure which showed the pump piston position of the pump piston pair by the injection pump by FIG. 1, and FIG. 4 is a chart over an injection range. 1 ... Casing, 2 ... Distributing cylinder, 3 ... Distributing member, 4 ... End, 6,8 ... Radial plane, 7,9 ... Pump cylinder, 10 ... Pump drive shaft, 12, 13 …… Pump piston, 14,15 …… Pump work chamber, 16,17 …… Side passage, 18
...... Pressure conduit, 19,23,24 ...... Radial passage, 20 ...... Annular groove, 22 ...... Fuel supply conduit, 25,26 …… Distribution opening, 27…
… Injection opening, 28 …… Fuel injection valve, 30 …… Roller, 31 ……
Cam ring, 32 ... Compression spring, 33 ... Cam surface, 34 ...
Valve, 35 ... Control machine, 36 ... Fuel transfer pump, 37 ... Fuel storage tank, 38 ... Compression control valve, 39 ... Cam.

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】内燃機関用の燃料噴射装置であって、第１
のポンプシリンダ（７）内で第１のポンプ作業室（14）
を形成する少なくとも１つのポンプピストン（12）と、
第２のポンプシリンダ（９）内で第２のポンプ作業室
（15）を形成する少なくとも１つの第２のポンプピスト
ン（13）と、分配シリンダ（２）内に支承された回転駆
動される分配部材（３）とが設けられており、前記ポン
プシリンダの第１のポンプシリンダ（７）が第１の半径
方向の平面（６）内にかつ第２のポンプシリンダ（９）
が第２の半径方向の平面（８）内に位置しており、前記
分配部材（３）が分配開口を有していて、該分配開口が
内燃機関の噴射個所に導かれた、分配シリンダ（２）か
ら分岐した噴射導管（27）に、分配部材回転中ポンプピ
ストン搬送行程中に順次合致せしめられ、かつ、前記分
配開口が圧力導管（18,23,24）を介して第１のポンプ作
業室（14）及び第２のポンプ作業室（15）から噴射燃料
量を供給されるようになっていて、この噴射燃料量が調
量装置（34）を介して制御されるようになっており、更
に、第１の半径方向の平面（６）及び第２の半径方向の
平面（８）の範囲に位置するカムリング（31）とポンプ
駆動装置（10）とが設けられており、前記カムリングが
カム面（33）に半径方向に向いたカム（39）を有してお
り、かつ、前記ポンプ駆動装置（10）によって、ポンプ
ピストンを往復運動させるために、分配部材の回転に同
期してカムリング（31）とポンプピストン（12,13）と
が互いに相対的に回転方向で運動させられるようになっ
ており、カムリング（31）のカム（39）とポンプピスト
ン（12,13）とが、第１のポンプピストン（12）の操作
が第２のポンプピストン（13）の操作に対して所定の角
度間隔だけずらされて行なわれるように、互いに配属さ
れている形式のものにおいて、前記分配開口として第１
の分配開口（25）と第２の分配開口（26）とが設けられ
ていて、これら分配開口が、ポンプピストンを互いにず
らして操作する前記角度間隔に相応して互いに所定の角
度間隔（α）を置いて位置しており、第１のポンプ作業
室（14）及び第２のポンプ作業室（15）が、共通の圧力
導管（18）を介して圧力導管から分岐した第１の通路
（23）により第１の分配開口（25）にかつ同時に圧力導
管（18）から分岐した第２の通路（24）により第２の分
配開口（26）に接続されており、更に、第１のポンプ作
業室（14）及び第２のポンプ作業室（15）が、共通の吸
込み導管（19）を介して調量弁（34）を有する燃料供給
導管（22）に接続可能であり、前記調量弁（34）を介し
てそれぞれのポンプ作業室に、ポンプピストンの相応の
吸込み行程時に、ポンプピストンの搬送行程時にそれぞ
れ噴射される燃料量が供給されるようになっていること
を特徴とする、内燃機関用の燃料噴射装置。1. A fuel injection device for an internal combustion engine, comprising:
First pump working chamber (14) in the pump cylinder (7) of
At least one pump piston (12) forming
At least one second pump piston (13) forming a second pump working chamber (15) in the second pump cylinder (9), and a rotationally driven distributor supported in the distributor cylinder (2). A member (3) is provided, the first pump cylinder (7) of the pump cylinder being in a first radial plane (6) and the second pump cylinder (9).
Located in a second radial plane (8), said distribution member (3) having a distribution opening, said distribution opening being directed to the injection point of the internal combustion engine ( The injection conduit (27) branched from 2) is sequentially matched during the pump piston conveying process while the distribution member is rotating, and the distribution opening is the first pumping work via the pressure conduit (18,23,24). The amount of injected fuel is supplied from the chamber (14) and the second pump working chamber (15), and the amount of injected fuel is controlled via the metering device (34). Further, a cam ring (31) and a pump drive device (10) located within the range of the first radial plane (6) and the second radial plane (8) are provided, and the cam ring is provided. The cam surface (33) has a cam (39) oriented in the radial direction, and the pump is driven. The arrangement (10) allows the cam ring (31) and the pump pistons (12, 13) to move in a rotational direction relative to each other in synchronization with the rotation of the distribution member to reciprocate the pump piston. The cam (39) of the cam ring (31) and the pump pistons (12, 13) have a predetermined angle with respect to the operation of the first pump piston (12) with respect to the operation of the second pump piston (13). In such a type that they are assigned to each other so that they are displaced by a distance, the
A second dispensing opening (25) and a second dispensing opening (26) are provided, said dispensing openings having a predetermined angular spacing (α) from one another corresponding to the angular spacing with which the pump pistons are displaced relative to one another. And a first pump working chamber (14) and a second pump working chamber (15) branch from the pressure conduit via a common pressure conduit (18) (23). ) Is connected to the first distribution opening (25) and at the same time to the second distribution opening (26) by a second passage (24) branching from the pressure conduit (18), and further to the first pumping operation. The chamber (14) and the second pump working chamber (15) are connectable via a common suction conduit (19) to a fuel supply conduit (22) having a metering valve (34), said metering valve (34) into the respective pump working chambers during the corresponding pump piston suction strokes. 2. A fuel injection device for an internal combustion engine, wherein the amount of fuel to be injected is supplied during each of the carrying strokes. 【請求項２】一方のポンプピストンの搬送行程時に他方
のポンプピストンがカムリングのカム面によって制限さ
れた最も外側の半径方向位置を占めかつ一方の分配開口
が分配シリンダによって閉じられるように、角度間隔
（α）が選ばれている、特許請求の範囲第１項記載の燃
料噴射装置。2. The angular spacing so that, during the conveying stroke of one pump piston, the other pump piston occupies the outermost radial position limited by the cam surface of the cam ring and one distribution opening is closed by the distribution cylinder. The fuel injection device according to claim 1, wherein (α) is selected. 【請求項３】分配シリンダ（２）から同じ角度間隔で４
本の噴射導管（27）がのびていてかつ分配開口（25,2
6）の角度間隔（α）が互いに135゜である、特許請求の
範囲第２項記載の燃料噴射装置。3. From the distribution cylinder (2) 4 at the same angular spacing.
A book jet conduit (27) extends and a distribution opening (25,2
The fuel injection device according to claim 2, wherein the angular intervals (α) of 6) are 135 ° to each other. 【請求項４】調量弁（34）が電気的な制御機械（35）に
よって少なくとも間接的に電気的に制御されるようにな
っている、特許請求の範囲第１項から第３項までのいず
れか１項記載の燃料噴射装置。4. A metering valve (34), which is adapted to be electrically controlled at least indirectly by an electric control machine (35). The fuel injection device according to claim 1. 【請求項５】制御機械（35）がそれぞれのポンプピスト
ン（12,13）の吸込み行程時に燃料供給導管（22）を開
放し、有効ポンプ行程開始時に閉鎖しかつ有効ポンプ行
程を終了させるために再び開放するようになっている、
特許請求の範囲第１項から第４項までのいずれか１項記
載の燃料噴射装置。5. A control machine (35) for opening the fuel supply conduit (22) during the suction stroke of the respective pump piston (12, 13), closing it at the beginning of the effective pump stroke and ending the effective pump stroke. It is supposed to open again,
The fuel injection device according to any one of claims 1 to 4.
JP60230077A 1984-10-17 1985-10-17 Fuel injection device for internal combustion engines Expired - Lifetime JPH0816469B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3437933.9 1984-10-17
DE3437983A DE3437983C1 (en) 1984-10-17 1984-10-17 Method for applying a metallic protective film onto a metallic substrate
DE3437983.9 1984-10-17

Publications (2)

Publication Number Publication Date
JPS6198959A JPS6198959A (en) 1986-05-17
JPH0816469B2 true JPH0816469B2 (en) 1996-02-21

Family

ID=6248065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60230077A Expired - Lifetime JPH0816469B2 (en) 1984-10-17 1985-10-17 Fuel injection device for internal combustion engines

Country Status (2)

Country Link
JP (1) JPH0816469B2 (en)
DE (1) DE3437983C1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3715325A1 (en) * 1987-05-08 1988-11-24 Castolin Sa METHOD FOR PRODUCING SLIDING SURFACES ON PARTS OF VEHICLE ENGINES
DE3734768A1 (en) * 1987-10-14 1989-05-03 Battelle Institut E V FITTING PART FOR USE IN A SULFURIC ACID MEDIUM THAT ALSO CONTAINS ABRASIVE SOLID PARTICLES AND METHOD FOR PRODUCING SUCH A FITTING PART
DE3936479A1 (en) * 1989-11-02 1991-05-08 Guenter Link Metallic and ceramic substrate coating method - using powder material applied to surface in liq. medium and melted by laser beam
DE29610431U1 (en) * 1996-06-14 1996-08-22 Haver & Boecker Feed plate for bulk material processing plants
DE19627039A1 (en) * 1996-07-05 1998-01-08 Gotek Gmbh Sieve plate
FR2750907B1 (en) * 1996-07-12 1998-09-18 Technogenia DEBARKING KNIFE, AND METHOD FOR THE PRODUCTION THEREOF
DE19707845C2 (en) * 1997-02-27 1999-03-11 Ernst Josef Dipl Kronenberger Disc for a disc sieve or a disc separator
DE10009133A1 (en) * 2000-02-26 2001-08-30 Volkswagen Ag Process for laser coating a surface comprises melting the base material of the surface using a laser beam to form a melt bath, and inserting an alloy powder into the bath
DE102012102087A1 (en) * 2012-03-13 2013-09-19 Thermico Gmbh & Co. Kg Component with a metallurgically bonded coating
EP2743367B1 (en) * 2012-12-17 2015-09-16 Sulzer Metco Coatings GmbH Submersible bath roller and method for producing same
EP2871257A1 (en) * 2013-11-11 2015-05-13 Siemens Aktiengesellschaft Method of coating with subsequent remelting method
CN112342543B (en) * 2019-08-08 2023-08-18 精镭光电科技股份有限公司 Method for sintering and coating polymer material on metal surface by using laser
CN114555278A (en) 2019-10-22 2022-05-27 米沃奇电动工具公司 Clad tool and method of manufacturing a clad tool

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147148U (en) * 1974-10-05 1976-04-07
GB1499602A (en) * 1975-12-22 1978-02-01 Caterpillar Tractor Co Method of applying a wear-resistant composite coating to an article
US4299860A (en) * 1980-09-08 1981-11-10 The United States Of America As Represented By The Secretary Of The Navy Surface hardening by particle injection into laser melted surface
CH647818A5 (en) * 1980-12-05 1985-02-15 Castolin Sa POWDERED COATING MATERIAL FOR THERMAL COATING OF WORKPIECES.
JPS5968554A (en) * 1982-10-14 1984-04-18 Nissan Motor Co Ltd Fuel injection pump of diesel engine
DE3248713A1 (en) * 1982-12-31 1984-07-05 Robert Bosch Gmbh, 7000 Stuttgart METHOD FOR INJECTION OF FUEL AND FUEL INJECTION DEVICE FOR CARRYING OUT THE METHOD
JPS59165856A (en) * 1983-03-09 1984-09-19 Nissan Motor Co Ltd Fuel injection pump for internal-combustion engine

Also Published As

Publication number Publication date
JPS6198959A (en) 1986-05-17
DE3437983C1 (en) 1986-03-20

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