JPS62117263U - - Google Patents
Info
- Publication number
- JPS62117263U JPS62117263U JP367787U JP367787U JPS62117263U JP S62117263 U JPS62117263 U JP S62117263U JP 367787 U JP367787 U JP 367787U JP 367787 U JP367787 U JP 367787U JP S62117263 U JPS62117263 U JP S62117263U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- delivery
- fuel injection
- cylinder liner
- chamber
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims 3
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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/462—Delivery valves
-
- 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
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
Description
図面は、本考案の分配型燃料噴射ポンプの縦断
面図である。
１０……ケーシング、１１……シリンダライナ
、１２……プランジヤ、１３……ポンプ作業室、
１４……供給通路、１５……縦溝、１６……環状
溝、１７……分配溝、１８……分配孔、１９……
分配通路、２０……弁体、２１……中央孔、２２
……ケーシングキヤツプ、２３……内ねじ山、２
４……送出室、２５……送出通路、２６……弁部
材、２７……閉鎖体、２８……弁座、２９……弁
閉鎖ばね、３０……ばね受け、３１……縦通路、
３２……弁座、３３……閉鎖部材、３４……逆止
弁、３５……圧縮ばね、３６……押圧体、３７…
…当接肩、３８……絞り孔、３９……環状フラン
ジ、４０……環状板、４１……送出弁、２０１…
…円板状区分、２０２……円筒形状区分。
The drawing is a longitudinal sectional view of the distribution type fuel injection pump of the present invention. 10...Casing, 11...Cylinder liner, 12...Plunger, 13...Pump work chamber,
14... Supply passage, 15... Vertical groove, 16... Annular groove, 17... Distribution groove, 18... Distribution hole, 19...
Distribution passage, 20... Valve body, 21... Center hole, 22
...Casing cap, 23 ...Inner thread, 2
4... Delivery chamber, 25... Delivery passage, 26... Valve member, 27... Closing body, 28... Valve seat, 29... Valve closing spring, 30... Spring receiver, 31... Vertical passage,
32... Valve seat, 33... Closing member, 34... Check valve, 35... Compression spring, 36... Pressing body, 37...
...Abutment shoulder, 38... Throttle hole, 39... Annular flange, 40... Annular plate, 41... Delivery valve, 201...
...disk-shaped section, 202... cylindrical section.
Claims (1)
ケーシング１０と、該ケーシング内１０に配置さ
れたシリンダライナ１１と、該シリンダライナ１
１内を回転しながら往復動するプランジヤ１２と
を有しており、該プランジヤ１２の端面が前記シ
リンダライナ１１と共にポンプ作業室１３を制限
しており、さらに前記プランジヤ１２の周面に、
環状溝１６及び該環状溝１６に開口している軸方
向に延びる分配溝１７を備えており、該分配溝１
７が、プランジヤ１２の周面に沿つてシリンダラ
イナ１７内に分配して配置された半径方向に延び
る分配孔１８と順次協働するようになつており、
さらに、前記シリンダライナ１１内の送出通路２
５を介して前記環状溝１６と連通する送出室２４
、及び前記ポンプ作業室１３と前記送出室２４と
の間に配置された送出弁４１を有しており、該送
出弁４１が弁部材２６を有しており、該弁部材２
６が、ポンプ作業室１３に至る弁開口を取り囲む
弁座２８と前記送出室２４内に支持されている弁
閉鎖ばね２９との間に締め込まれており、さらに
、送出通路２５内の負荷が軽減される際にのみ有
効な逆流絞りを有している形式のものにおいて、
前記逆流絞りが、前記送出弁４１の前記弁部材２
６に一体成形されており、しかも弁部材２６が縦
通路３１を有しており、該縦通路３１が、弁部材
２６の、ポンプ作業室１３の方を向いた端面に開
口していてかつこの開口部を取り囲む弁座３２に
圧縮ばね３５によつて押圧された、逆止弁３４の
閉鎖部材３３によつて閉鎖されており、さらに前
記縦通路が、絞り孔３８を介して前記送出室２４
と連通するようになつていることを特徴とする内
燃機関のための分配型燃料噴射ポンプ。 ２ 前記弁部材２６が前記ケーシング１０に固定
された弁体２０の中央孔２１内に軸方向に案内さ
れており、かつ前記弁部材の円錐形の閉鎖体２７
が前記送出室２４内に突入しているのに対して、
円錐面が前記中央孔２１を取り囲む弁座２８上に
座着されるようになつており、さらに、前記送出
室２４が、前記弁体２０をキヤツプ状に上方から
つかむケーシングキヤツプ２２のポケツト状の切
欠きによつて形成されており、圧縮ばねとして形
成されている前記弁閉鎖ばね２９が、前記閉鎖体
２７及び前記送出室２４の底に支持されている実
用新案登録請求の範囲第１項記載の分配型燃料噴
射ポンプ。 ３ 前記中央孔２１のポンプ作業室側の開口近く
に前記中央孔２１の壁から半径方向に突出する当
接肩３７が設けられており、該当接肩３７に、前
記逆止弁３４の前記閉鎖部材３３に少なくとも間
接的に係合する前記圧縮ばね３５が支持されてい
る実用新案登録請求の範囲第２項記載の分配型燃
料噴射ポンプ。 ４ 前記当接肩３７が、前記中央孔３１を段状孔
として形成することによつて得られる実用新案登
録請求の範囲第３項記載の分配型燃料噴射ポンプ
。 ５ 前記弁体２０が２部分から形成されており、
つまり、円筒形状区分２０２と円板状区分２０１
とから成つており、該両弁体区分２０１，２０２
の間には、前記中央孔２１内に突入する環状板４
０が保持されており、該環状板４０が前記当接肩
３７を形成する実用新案登録請求の範囲第３項記
載の分配型燃料噴射ポンプ。[Claims for Utility Model Registration] 1. A fuel injection pump for an internal combustion engine, which
A casing 10, a cylinder liner 11 disposed inside the casing 10, and the cylinder liner 1
The plunger 12 has a plunger 12 that reciprocates while rotating within the cylinder liner 1, and the end face of the plunger 12 defines a pump working chamber 13 together with the cylinder liner 11.
It is provided with an annular groove 16 and a distribution groove 17 opening in the annular groove 16 and extending in the axial direction.
7 are adapted to cooperate sequentially with radially extending distribution holes 18 distributed in the cylinder liner 17 along the circumferential surface of the plunger 12;
Furthermore, the delivery passage 2 in the cylinder liner 11
a delivery chamber 24 communicating with the annular groove 16 via 5;
, and a delivery valve 41 disposed between the pump working chamber 13 and the delivery chamber 24, the delivery valve 41 having a valve member 26, and the delivery valve 41 having a valve member 26.
6 is clamped between a valve seat 28 surrounding the valve opening leading to the pump working chamber 13 and a valve closing spring 29 supported in said delivery chamber 24, furthermore, the load in the delivery passage 25 is In types that have a backflow restriction that is effective only when the
The backflow restrictor is connected to the valve member 2 of the delivery valve 41.
6, the valve member 26 has a longitudinal passage 31 which opens at the end face of the valve member 26 facing towards the pump working chamber 13, and which is integrally formed with the valve member 26. It is closed by a closing member 33 of a non-return valve 34, which is pressed by a compression spring 35 against a valve seat 32 surrounding the opening, and the vertical passage is connected to the delivery chamber 24 through a throttle hole 38.
A distribution type fuel injection pump for an internal combustion engine, characterized in that the pump is adapted to communicate with an internal combustion engine. 2 the valve member 26 is guided axially in the central bore 21 of the valve body 20 fixed to the casing 10 and the conical closure body 27 of the valve member
has entered the delivery chamber 24, whereas
The conical surface is seated on a valve seat 28 surrounding the central hole 21, and the delivery chamber 24 is formed into a pocket-shaped portion of a casing cap 22 that grips the valve body 20 from above in a cap-like manner. Claim 1: The valve closing spring 29, which is formed by a recess and is designed as a compression spring, is supported on the closing body 27 and on the bottom of the delivery chamber 24. distribution type fuel injection pump. 3. An abutment shoulder 37 protruding radially from the wall of the central hole 21 is provided near the opening of the central hole 21 on the side of the pump working chamber, and the abutment shoulder 37 is provided with the abutment shoulder 37 that prevents the check valve 34 from closing. 3. The distribution type fuel injection pump according to claim 2, wherein the compression spring 35, which engages the member 33 at least indirectly, is supported. 4. The distribution type fuel injection pump according to claim 3, wherein the abutment shoulder 37 is obtained by forming the central hole 31 as a stepped hole. 5. The valve body 20 is formed from two parts,
That is, the cylindrical section 202 and the disc-shaped section 201
It consists of both valve body sections 201 and 202.
An annular plate 4 protruding into the central hole 21 is provided between
3. The distribution type fuel injection pump according to claim 3, wherein the annular plate 40 forms the abutment shoulder 37.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19868601064 DE8601064U1 (en) | 1986-01-17 | 1986-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62117263U true JPS62117263U (en) | 1987-07-25 |
Family
ID=6790655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP367787U Pending JPS62117263U (en) | 1986-01-17 | 1987-01-16 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS62117263U (en) |
| DE (1) | DE8601064U1 (en) |
| FR (1) | FR2593240B1 (en) |
| GB (1) | GB2185540B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5066087A (en) | 1990-03-07 | 1991-11-19 | Fujikura Ltd. | Optical fiber coupler |
| DE4126879C2 (en) * | 1991-08-14 | 2001-02-22 | Bosch Gmbh Robert | Equilibrium pressure relief valve for fuel injection systems |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56110556A (en) * | 1980-02-05 | 1981-09-01 | Nippon Denso Co Ltd | Discharge valve for fuel injection pump of internal combustion engine |
| JPS5643471B2 (en) * | 1973-08-02 | 1981-10-13 | ||
| JPS60119367A (en) * | 1983-11-17 | 1985-06-26 | ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Pressure valve for fuel jet pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1999967A (en) * | 1933-03-29 | 1935-04-30 | Ingersoll Rand Co | Valve mechanism |
| DE2936205A1 (en) * | 1979-09-07 | 1981-03-19 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION PUMP IN DISTRIBUTION DESIGN FOR INTERNAL COMBUSTION ENGINES |
| DE3344825A1 (en) * | 1983-12-12 | 1985-06-13 | Robert Bosch Gmbh, 7000 Stuttgart | PRESSURE VALVE FOR FUEL INJECTION PUMPS |
| GB2175052B (en) * | 1985-05-14 | 1988-10-05 | Diesel Kiki Co | Fuel injection pump for internal combustion engines |
-
1986
- 1986-01-17 DE DE19868601064 patent/DE8601064U1/de not_active Expired
- 1986-12-30 FR FR8618366A patent/FR2593240B1/en not_active Expired - Fee Related
-
1987
- 1987-01-16 GB GB8700934A patent/GB2185540B/en not_active Expired
- 1987-01-16 JP JP367787U patent/JPS62117263U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5643471B2 (en) * | 1973-08-02 | 1981-10-13 | ||
| JPS56110556A (en) * | 1980-02-05 | 1981-09-01 | Nippon Denso Co Ltd | Discharge valve for fuel injection pump of internal combustion engine |
| JPS60119367A (en) * | 1983-11-17 | 1985-06-26 | ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Pressure valve for fuel jet pump |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2593240B1 (en) | 1993-05-21 |
| GB2185540A (en) | 1987-07-22 |
| GB8700934D0 (en) | 1987-02-18 |
| FR2593240A1 (en) | 1987-07-24 |
| GB2185540B (en) | 1989-10-25 |
| DE8601064U1 (en) | 1987-05-21 |
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