JPS6036769A - Fuel jet pump for internal combustion engine - Google Patents
Fuel jet pump for internal combustion engineInfo
- Publication number
- JPS6036769A JPS6036769A JP14252284A JP14252284A JPS6036769A JP S6036769 A JPS6036769 A JP S6036769A JP 14252284 A JP14252284 A JP 14252284A JP 14252284 A JP14252284 A JP 14252284A JP S6036769 A JPS6036769 A JP S6036769A
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- injection pump
- support surface
- internal combustion
- combustion engine
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/126—Attachments or mountings comprising an element between the end coil of the spring and the support proper, e.g. an elastomeric annulus
-
- 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
- F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
- F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
- F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
- F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
- F02M41/121—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor with piston arranged axially to driving shaft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、内燃機関用の燃料噴射ポンプであって、一端
が燃料噴射ポンプのケーシングの支持面にかつ他端がプ
ランジャの支持面に支持されていてプランジャに戻し力
を加える少なくとも１つの押圧ばねと、該押圧ばねの破
損を回避するための緩衝部材とが設けら扛ている形式の
ものに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a fuel injection pump for an internal combustion engine, which has one end supported on a support surface of a casing of the fuel injection pump and the other end supported on a support surface of a plunger. The plunger is provided with at least one pressure spring that applies a return force to the plunger, and a buffer member for avoiding damage to the pressure spring.
従来の技術
ドイツ連邦共和国特許出願公開第２９２５４２６号明＋
ｌｆｌ書に基づいて公知のこのような形式の溶料噴射ポ
ンプでは、緩衝部材は２つのはね半部によって負荷され
る両側のばね受であり、そのスリーブ駄の中央区分はケ
ーシングのピン（６）
に治って軸方向摺動可能である。この摺動によって生せ
しめられる摩擦力によって両ばね半部に必要な緩衝作用
が得ら扛る。Prior Art Federal Republic of Germany Patent Application No. 2925426+
In such a type of solvent injection pump known from the IFL book, the damping member is a double-sided spring receiver loaded by two spring halves, the central section of which sleeve is connected to the pin (6) of the casing. ) and can be slid in the axial direction. The frictional force generated by this sliding action provides the necessary damping effect to the two spring halves.
発明が解決しようとする問題点 この公知の緩衝部材は確かに燃料噴射ポンフ。The problem that the invention seeks to solve This known damping member is certainly a fuel injection pump.
のその他の部分を変えることなしに後から燃料噴射ポン
プに組み込むことができるが、しかしながらそのために
は多数の個別の部材が必要であり、さらにこれらの部材
を、燃料噴射ポンプの全運転時間にわたって摩擦力をひ
いては緩衝力を一定に保つために互い（で注意深（調整
することが必要である。can be retrofitted into the fuel injection pump without changing the other parts of the fuel injection pump, but this requires a large number of separate parts and these parts must be kept friction-free over the entire operating time of the fuel injection pump. It is necessary to carefully adjust each other to keep the force and therefore the buffering force constant.
ゆえに本発明の課題は、燃料噴射ポンプの全運転時間に
わたって一定の緩衝作用を生せしめることができしかも
容易に取り付けろことができる緩衝部材を有する燃料噴
射ポンプケ提供することである。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a fuel injection pump with a damping element which provides a constant damping effect over the entire operating time of the fuel injection pump and which is easy to install.
問題点ケ解決するための手段
この課題を解決するために本発明の構成では、冒頭に述
べた形式の燃料噴射ポンプにおいて、（４）
緩Ｃｍ Ｆａｔ材が、押圧ばねを支持する支持面の少な
（とも一方と抑圧はねとの間に配置さ７′１．た弾性材
料製の圧縮部材である。Means for Solving the Problem In order to solve this problem, the present invention has a structure in which, in the fuel injection pump of the type mentioned at the beginning, (4) the loose Cm Fat material has a small support surface for supporting the pressure spring. (Both are compression members made of elastic material 7'1. disposed between one side and the compression spring.
実施態様
本発明の有利な実施態様は特許請求の範囲の・従属頃に
記載されている。特許請求の範囲第２項、第６項又は第
４頃に記載し１こ実施態様では多数ある緩衝部材用材料
のうちから、押圧部材に対して特に有利な緩衝作用を有
している６つの緩衝部材用材料が提案されている。内燃
機関に用いられる分配型燃料噴射ポンプではシランジャ
のばね受け、ケーシングに設けられた各１つの袋孔に差
し込まれていてつばを備えた少な（とも２つのがイドピ
ンに沿って案内されており、ガイドピンのつばを押圧ば
ねが少なくとも間接的にケーシングの支持面に押し付け
ている。Embodiments Advantageous embodiments of the invention are described in the dependent claims. Claims 2, 6, or 4 describe six materials that have a particularly advantageous cushioning effect on the pressing member from among the many materials for the cushioning member. Materials for cushioning members have been proposed. In the distribution type fuel injection pump used for internal combustion engines, the spring receiver of the syringe is inserted into each one blind hole provided in the casing, and two (two in each case) with a collar are guided along the idle pin. A pressure spring presses the collar of the guide pin at least indirectly against the support surface of the casing.
特許請求の範囲第５項にはこのような分配型溶料噴射ポ
ンプのための、技術上特に容易な解決策が示さ扛ており
、このように構成さ牡ていると、押圧ばねの個有振？！
＋Ｙ減衰することができる。また特許請求の範囲第６項
及び第７１１には、緩衝時にシフトするリング板材料を
良Ｏｆに偏位させるための可能性が示さ扛ている。Claim 5 discloses a technically simple solution for such a dispensing solvent injection pump, which, when constructed in this way, has the characteristic of the pressure spring. Shake? !
+Y can be attenuated. Further, claims 6 and 711 disclose the possibility of properly deflecting the ring plate material that shifts during buffering.
実施例
第１図に示された内燃機関用の分配型燃料噴射ポンプは
ケーシング１１と該ケーシング内に支承さ、ｆ′した駆
動軸１２とを有している。駆動軸１２は、内俤轡関のシ
リンダ数に相当する数のカム１４を有する端面カム板１
３と連結さ肚ている。この端面カム板１３のカム軌道は
、支承リング１７のピン１６に支承されたローラ１６と
協働する。プランジャ１日はその駆動側の端部区分にフ
ランジ１９を有し、このフランジ１９は連行体２０によ
って端部カム板１３と連結されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The distributed fuel injection pump for an internal combustion engine shown in FIG. 1 has a housing 11 and a drive shaft 12 mounted in the housing and pointed at f'. The drive shaft 12 has an end cam plate 1 having a number of cams 14 corresponding to the number of cylinders in the inner shaft.
I'm having trouble connecting with 3. The cam track of this end cam plate 13 cooperates with a roller 16 which is supported on a pin 16 of a bearing ring 17. The plunger 1 has a flange 19 on its drive-side end section, which flange 19 is connected to the end cam plate 13 by a driver 20 .
フランジ１９には２つのスライド円板２１を介してシラ
ンジャ１８のヨーク２３が支持されており、このヨーク
２３は、直径方向で対向して位置している軸平行の２つ
の押圧コイルばね２４（てよって押され、両押圧コイル
ばね２４は後で１７１−ｅべろよ５にケーシング１１の
ポンプ本体２５の支持面２２に支持さ扛ている。A yoke 23 of the syringe 18 is supported on the flange 19 via two slide discs 21, and this yoke 23 is supported by two axis-parallel pressing coil springs 24 located diametrically opposite each other. Thus, both pressing coil springs 24 are later supported by the support surface 22 of the pump body 25 of the casing 11 on the tongue 171-e.
性別噴射ポンプの作用形式は以下の通りである：
内燃機関の運転１１ｑｉには駆動軸１２ひいては端部カ
ム板１３が回転する。この場合端面カム板１３は、プラ
ンジャ１８に戻し力を作用する押圧コイルばね２４の力
によって常てローラ１５に押し付けられているので、カ
ム１４がローラ１５の上！転ｆｔ１Ｉすることによって
シランジャ１８は回転運動と共に往復運動せしめられ、
こわ、によって周知のように燃料が圧送さｎる。２つの
がイドビン２７がポンプ０本体２５の袋孔２８のなかを
案内さ２”ｂでいて、両ガイドピン２７は各１つのつば
２６を有している。押圧コイルげね２４の一方の端部区
分はばね受３１と補償円板３ｎをつげ２６の片側に押圧
し、他方の端部区分はばね受として構成さ扛たヨーク部
分（で支持さオｔている。The mode of operation of the sex injection pump is as follows: During operation 11qi of the internal combustion engine, the drive shaft 12 and thus the end cam plate 13 rotate. In this case, the end cam plate 13 is always pressed against the roller 15 by the force of the pressing coil spring 24 which exerts a returning force on the plunger 18, so that the cam 14 is placed above the roller 15! By rotating ft1I, the silanger 18 is caused to reciprocate along with rotational movement,
As is well known, fuel is pumped due to stiffness. The two guide pins 27 are guided through the blind holes 28 of the pump main body 25, and both guide pins 27 each have one collar 26. One end of the pressing coil spring 24 The partial section presses the spring retainer 31 and the compensating disk 3n onto one side of the boxwood 26, and the other end section is supported by a yoke section configured as a spring retainer.
弾性材料製のリング板３２は緩衝部材として（７）
働き、つげ２６の他方の側とポンプ本体２５の支持面２
２との間に挿入されている。このリング板３２のための
特に有利な弾性材料としては、ポリアミド、シリコンゴ
ム及びアクリロニ１−リルブタジエンゴム（ＮＢＲゴム
）がある。A ring plate 32 made of an elastic material acts as a buffer member (7) and protects the other side of the boxwood 26 and the support surface 2 of the pump body 25.
It is inserted between 2. Particularly advantageous elastic materials for the ring plate 32 include polyamide, silicone rubber and acryloni-1-lylbutadiene rubber (NBR rubber).
第２図には第１変化実施例のリング板３２ａと第２変化
実施例のリング板３２ｂとが半分ずつ示さ扛ている。６
つのすべての実施例のリング板３２．３２ａ、３２ｂに
おいてリング板の貫通孔３３はガイドピン２７に対して
十分な遊びを有している。リング板３２ａは平面平行な
２つの当接面３５のそれぞ２ｔに環状溝３４を有し、リ
ング板３２ｂは貫通孔３３の壁に環状溝３４ａを有して
いる。FIG. 2 shows half of the ring plate 32a of the first modified embodiment and half of the ring plate 32b of the second modified embodiment. 6
In all the embodiments of the ring plates 32 . The ring plate 32a has an annular groove 34 on each of two abutment surfaces 35 that are parallel to each other, and the ring plate 32b has an annular groove 34a on the wall of the through hole 33.
リング板３２，３２８．．３２１）の６つの実施例は押
圧コイルばね２４がプレロードをかけられｆこだけの状
態で示さ扛ている。リング板が所定の形式で緩衝部材と
して作用する際には、リング板は第２図に破線で示され
た形に変形し、この変形時にはリング板の弾性材料はが
イドピ（８）
ン２７の軸線３６に対して直角に偏位する（第２図の破
線参照）。Ring plate 32, 328. ．． The six embodiments of 321) are shown with the helical pressure spring 24 preloaded and in a state of f. When the ring plate acts as a damping member in the prescribed manner, the ring plate is deformed into the shape shown in broken lines in FIG. offset at right angles to axis 36 (see dashed line in FIG. 2).
効 果
本発明のように構成さ扛ていると、先行技術が持ってい
た問題点を簡単な手段でかつ燃料噴射ポンプの全運転時
間にわたって解決することができる。１１こ本発明の燃
料噴射ポンプでは、先行技術のように緩衝作用が摩擦に
よって生ぜしめられるのではな（、緩衝作用は容易に取
り付けることができる弾性材料製の圧縮部材によって得
られ、この緩衝作用によって押圧ばねの破損を良好に回
避することができる。Advantages With the structure of the present invention, the problems of the prior art can be solved by simple means and over the entire operating time of the fuel injection pump. 11. In the fuel injection pump of the present invention, the damping effect is not produced by friction, as in the prior art (the damping effect is obtained by means of a compression member made of an elastic material, which can be easily attached), and this damping effect is Therefore, damage to the pressure spring can be effectively avoided.
【図面の簡単な説明】
第１図は内燃機関用の分配型燃料噴射ポンプの一部夕示
す縦断面図、第２図は緩衝部材として働（リング板の２
つの有利な実施例を示す拡大縦断面図である。
１１・・・ケーシング、１２・・駆動軸、１３・・端部
カム板、１４・・カム、１５・・ローラ、１６・・ピン
、１７・・・支承リング、１８・・シランシャ、１９・
・フランジ、２０・・連行体、２１・・スライド板、２
２・・支持面、２３・・・ヨーク、２４・・・押圧コイ
ルばね、２５・・ポンプ本体、２６・・つげ、２７・が
イドビン、２８・・袋孔、２９・・バレル、３０・・補
償円板、３１・・ばね受、３２．３２ａ。
３２１） ＝リング板、３３ ・＝貫通孔、３４．３４
ａ・・環状溝、３５・・当接面、３６・・軸線１２ｂＰ
Ｌ賀ｆｆ［３沖
′５
旧[Brief explanation of the drawings] Fig. 1 is a partial vertical sectional view of a distribution type fuel injection pump for internal combustion engines, and Fig. 2 is a partial longitudinal sectional view of a distribution type fuel injection pump for internal combustion engines.
1 is an enlarged longitudinal section through two advantageous embodiments; FIG. 11...Casing, 12...Drive shaft, 13...End cam plate, 14...Cam, 15...Roller, 16...Pin, 17...Support ring, 18...Siransha, 19...
・Flange, 20...Driver, 21...Slide plate, 2
2... Support surface, 23... Yoke, 24... Pressing coil spring, 25... Pump body, 26... Boxwood, 27... Idbin, 28... Blind hole, 29... Barrel, 30... Compensation disc, 31... Spring holder, 32.32a. 321) =Ring plate, 33 ・=Through hole, 34.34
a... Annular groove, 35... Contact surface, 36... Axis line 12bP
Lga ff [3 oki'5 old
Claims (1)
料噴射ポンプのケーシング（１１）の支持面にかつ他端
がプランジャ（１８）の支持面に支持されていてシラン
シャ（１８）に戻し力を加える少なくとも１つの押圧ば
ね（２４）と、該押圧ばねの破損を回避するための緩衝
部材とが設けられている形式のものにおいて、緩衝部材
（３２，３２ａ、３２ｂ）が、前記支持面の少なくとも
一方（２２）と押圧げね（２４）との間に配置さ′ｒＬ
、た弾性材料製の圧縮部材であることを特徴とする、内
燃機関用の燃料噴射ポンプ。 ２、 緩衝部材（３２，３２ａ、３２ｂ）がポリアミド
のような熱可塑性プラスチックから成っている特許請求
の範囲第１項記載の燃料噴射ボンフ０゜ ６、緩衝部材（３２，３２ａ、３２ｂ）がシリコンゴム
から成っている特許請求の範囲第１項記載の燃料噴射ポ
ンプ。 ４、 緩衝部材（３２，３２ａ、３２ｂ）がアクリロニ
トリルプタゾエンゴムから成っている特許請求の範囲第
１項記載の燃料噴射ポンプ。 ５、 ばね受（３１）を案内するために働（、ケーシン
グ（１１）に差し込まれた複数のがイドざン（２７）
カ設けられており、各ガイドぎン（２７）が押圧ばねの
支持面として働（つげ（２６）を有しており、緩衝部材
（３２゜３２ａ、３２ｂ）が、ケーシング（１１）の支
持面（２２）とつげ（２６）との間に挿入さ肚たリング
板の形をしている特許請求の範囲第２項から第４項寸で
のいず肚が１項記載の燃料噴射ポンプ。 ６、 リング板（３２ａ）が第１の当接面と第２の当接
面（３５）とを有しており、第１の当接面及び（又は）
第２の当接面（３５）に環状溝（３４）が切り欠かねて
いる特許請求の埴間第５項記載の溶料噴射ポンプ。 Ｚ リング板（３２ｂ）の貫通孔（３３）の壁に環状溝
（３４ａ）が切り欠か扛ている特許請求の範囲第５項又
は第６項記載の燃料噴射ポンプ。1.3 A fuel injection pump for an internal combustion engine, one end of which is supported by a support surface of a casing (11) of the fuel injection pump, the other end of which is supported by a support surface of a plunger (18), and the pump is returned to a silansha (18). In the type in which at least one pressure spring (24) for applying a force and a buffer member for avoiding damage to the pressure spring are provided, the buffer member (32, 32a, 32b) is attached to the support surface. (22) and the pressing spring (24).
A fuel injection pump for an internal combustion engine, characterized in that the compression member is made of an elastic material. 2. The fuel injection bomb according to claim 1, wherein the buffer members (32, 32a, 32b) are made of thermoplastic plastic such as polyamide.6, The buffer members (32, 32a, 32b) are made of silicone. A fuel injection pump according to claim 1, which is made of rubber. 4. The fuel injection pump according to claim 1, wherein the buffer members (32, 32a, 32b) are made of acrylonitrile putazoene rubber. 5. A plurality of guides (27) inserted into the casing (11) work to guide the spring receiver (31).
Each guide tine (27) serves as a support surface for the pressure spring (has a boxwood (26)), and the buffer members (32° 32a, 32b) act as a support surface for the casing (11). The fuel injection pump according to claim 1, wherein each arm has a shape of a ring plate inserted between the boxwood (22) and the boxwood (26). 6. The ring plate (32a) has a first contact surface and a second contact surface (35), and the first contact surface and/or
The solvent injection pump according to claim 5, wherein the second contact surface (35) has an annular groove (34) cut out. The fuel injection pump according to claim 5 or 6, wherein an annular groove (34a) is cut out in the wall of the through hole (33) of the Z ring plate (32b).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3325196.7 | 1983-07-13 | ||
| DE19833325196 DE3325196A1 (en) | 1983-07-13 | 1983-07-13 | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6036769A true JPS6036769A (en) | 1985-02-25 |
| JPH0380981B2 JPH0380981B2 (en) | 1991-12-26 |
Family
ID=6203823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14252284A Granted JPS6036769A (en) | 1983-07-13 | 1984-07-11 | Fuel jet pump for internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS6036769A (en) |
| DE (1) | DE3325196A1 (en) |
| GB (1) | GB2144182B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3439498A1 (en) * | 1984-10-27 | 1986-05-07 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection pump for internal combustion engines |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB527468A (en) * | 1939-04-13 | 1940-10-09 | Morris Motors Ltd | Improvements relating to spring mountings for motor vehicles |
| CH380546A (en) * | 1960-10-26 | 1964-07-31 | Gomma Antivibranti Applic | Anti-vibration rubber washer for coil spring suspensions |
| DE1156606B (en) * | 1961-10-13 | 1963-10-31 | Bosch Gmbh Robert | Fuel injection pump for multi-cylinder internal combustion engines, especially for light fuel |
| FR1391845A (en) * | 1964-01-17 | 1965-03-12 | Metallurg De Saint Urbain Atel | Advanced coil spring |
| DE2142704C3 (en) * | 1971-08-26 | 1974-04-25 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection pump for multi-cylinder internal combustion engines |
| US4148469A (en) * | 1978-01-23 | 1979-04-10 | Standard Car Truck Company | Dual rate spring with elastic spring coupling |
| DE2923423A1 (en) * | 1979-06-09 | 1980-12-11 | Bosch Gmbh Robert | Fuel injection pump for IC engine - has two return springs in series, with spring plate between, to prevent resonant vibration of springs |
| FR2488964B1 (en) * | 1980-08-19 | 1985-10-18 | Creusot Loire | ELASTIC ELEMENT WITH SPRING HELICOIDAL |
-
1983
- 1983-07-13 DE DE19833325196 patent/DE3325196A1/en not_active Ceased
-
1984
- 1984-05-14 GB GB08412293A patent/GB2144182B/en not_active Expired
- 1984-07-11 JP JP14252284A patent/JPS6036769A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0380981B2 (en) | 1991-12-26 |
| GB2144182B (en) | 1987-02-25 |
| GB2144182A (en) | 1985-02-27 |
| DE3325196A1 (en) | 1985-01-24 |
| GB8412293D0 (en) | 1984-06-20 |
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