JPH0341161U - - Google Patents
Info
- Publication number
- JPH0341161U JPH0341161U JP9915589U JP9915589U JPH0341161U JP H0341161 U JPH0341161 U JP H0341161U JP 9915589 U JP9915589 U JP 9915589U JP 9915589 U JP9915589 U JP 9915589U JP H0341161 U JPH0341161 U JP H0341161U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- plunger
- plunger barrel
- hole
- timing sleeve
- 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
- 239000000446 fuel Substances 0.000 claims description 33
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 230000003628 erosive effect Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 1
- 230000002093 peripheral effect Effects 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
- 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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/001—Pumps with means for preventing erosion on fuel discharge
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
第１図は本考案の一実施例による燃料噴射ポン
プ４０の要部縦断面図、第２図は第１図の方向
から見たプランジヤバレル４の正面図、第３図は
−線断面図、第４図は従来の燃料噴射ポンプ
１の要部縦断面図、第５図は第４図の方向から
見たプランジヤバレル４の正面図、第６図は第４
図の−線断面図である。
１……燃料噴射ポンプ、２……ポンプハウジン
グ、２Ａ……ポンプハウジング２の内壁、３……
縦孔、４……プランジヤバレル４、４Ａ……プラ
ンジヤバレル４の内壁、５……取付けボルト、６
……プランジヤ、７……開口窓部、８……燃料溜
り室、９……タイミングスリーブ、９Ａ……タイ
ミングスリーブ９の外周部分、１０……燃料タン
ク、１１……燃料供給ポンプ、１２……デリバリ
バルブ、１３……燃料圧室（プランジヤ室）、１
４……デリバリバルブホルダ、１５……燃料出口
、１６……燃料噴射管、１７……燃料噴射ノズル
、１８……噴射量調節用スリーブ、１９……噴射
量調節用コントロールラツク、２０……縦方向の
案内溝、２１……横方向の係合溝、２２……案内
ピン、２３……コントロールロツド、２４……横
孔、２５……燃料吸排孔（燃料吸入ポート）、２
６……連通孔、２７……制御用リード溝、２８…
…連通用縦溝、２９……補助孔、３０……カツト
オフ孔、３１……絞り部分、４０……燃料噴射ポ
ンプ、４１……緩衝用凹部、Ｄ１，Ｔ１……燃料
燃料吸排孔２５からプランジヤバレル４の内壁４
Ａまでの到達距離、Ｄ２，Ｔ２……燃料吸排孔２
５から噴出した燃料が内壁４Ａに衝突する部分か
らポンプハウジング２の内壁２Ａに至るまでの到
達距離、Ｅ……キヤビテーシヨンエロージヨン（
エロージヨン）、ＡＮ，ａｎ……噴出燃料がポン
プハウジング２の内壁２Ａに衝突する衝突角度。
FIG. 1 is a vertical sectional view of a main part of a fuel injection pump 40 according to an embodiment of the present invention, FIG. 2 is a front view of the plunger barrel 4 seen from the direction of FIG. 1, and FIG. 3 is a sectional view taken along the - line. FIG. 4 is a vertical sectional view of main parts of a conventional fuel injection pump 1, FIG. 5 is a front view of the plunger barrel 4 seen from the direction of FIG. 4, and FIG.
It is a sectional view taken along the - line in the figure. DESCRIPTION OF SYMBOLS 1... Fuel injection pump, 2... Pump housing, 2A... Inner wall of pump housing 2, 3...
Vertical hole, 4...Plunger barrel 4, 4A...Inner wall of plunger barrel 4, 5...Mounting bolt, 6
... Plunger, 7 ... Opening window, 8 ... Fuel reservoir chamber, 9 ... Timing sleeve, 9A ... Outer circumference of timing sleeve 9, 10 ... Fuel tank, 11 ... Fuel supply pump, 12 ... Delivery valve, 13...Fuel pressure chamber (plunger chamber), 1
4...Delivery valve holder, 15...Fuel outlet, 16...Fuel injection pipe, 17...Fuel injection nozzle, 18...Sleeve for adjusting injection amount, 19...Control rack for adjusting injection amount, 20...Vertical direction guide groove, 21...lateral engagement groove, 22...guide pin, 23...control rod, 24...lateral hole, 25...fuel intake/discharge hole (fuel intake port), 2
6...Communication hole, 27...Control lead groove, 28...
... Communication vertical groove, 29 ... Auxiliary hole, 30 ... Cutoff hole, 31 ... Throttle part, 40 ... Fuel injection pump, 41 ... Buffer recess, D1, T1 ... Fuel from fuel intake and discharge hole 25 to plunger Inner wall 4 of barrel 4
Reaching distance to A, D2, T2...Fuel intake and exhaust hole 2
The travel distance from the part where the fuel ejected from 5 collides with the inner wall 4A to the inner wall 2A of the pump housing 2, E... cavitation erosion (
erosion), AN, an... Collision angle at which the jetted fuel collides with the inner wall 2A of the pump housing 2.
補正 平２．４．９
実用新案登録請求の範囲を次のように補正する
。Amendment 2.4.9. The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
燃料圧室を有するプランジヤバレルと、
このプランジヤバレル内を往復動して燃料溜り
室から燃料を吸い込み、前記燃料圧室からこの燃
料を圧送するプランジヤと、
このプランジヤに摺動自在に外嵌するように該
プランジヤと前記プランジヤバレルとの間に位置
させるとともに、スピルポートを形成したタイミ
ングスリーブとを有する燃料噴射ポンプであつて
、
前記タイミングスリーブの前記スピルポートに
対向する前記プランジヤバレルの内壁面に緩衝用
凹部を形成するとともに、該タイミングスリーブ
の外周部分の形状をこの緩衝用凹部に合わせて所
定形状に形成したことを特徴とする燃料噴射ポン
プ。
図面の簡単な説明を次のように補正する。
明細書、第１７頁第１１行目の「燃料吸排孔２
５」を、『カツトオフ孔３０』と補正する。
明細書、第１７頁第９行目の「燃料燃料吸排孔
２５」を『カツトオフ孔３０』と補正する。
明細書、第１５頁第６行目の「第３図は−
線断面図、」を、『第３図は第１図の−線断
面図、』と補正する。
明細書、第１７頁第５行目の「カツトオフ孔」
を、『カツトオフ孔（スピルポート）』と補正す
る。[Scope of Claim for Utility Model Registration] A plunger barrel having a fuel pressure chamber; A plunger that reciprocates within the plunger barrel to suck in fuel from the fuel reservoir chamber and forcefully transport the fuel from the fuel pressure chamber; A fuel injection pump including a timing sleeve that is slidably fitted between the plunger and the plunger barrel and has a spill port formed therein, the timing sleeve facing the spill port of the timing sleeve. A fuel injection pump characterized in that a buffer recess is formed in the inner wall surface of the plunger barrel, and an outer peripheral portion of the timing sleeve is formed in a predetermined shape to match the buffer recess . The brief description of the drawing has been amended as follows. Specification, page 17, line 11, “Fuel intake/discharge hole 2
5" is corrected as "cut-off hole 30.""Fuel intake/discharge hole 25" on page 17, line 9 of the specification is corrected to "cut-off hole 30." Specification, page 15, line 6, “Figure 3 is -
``A line sectional view'' is corrected to ``Figure 3 is a - line sectional view of Figure 1.'' Specification, page 17, line 5, “Cut-off hole”
is corrected as a ``cut-off hole (spill port)''.
Claims (1)
室から燃料を吸い込み、前記燃料圧室からこの燃
料を圧送するプランジヤと、 このプランジヤに摺動自在に外嵌するように該
プランジヤと前記プランジヤバレルとの間に位置
させるとともに、スピルポートを形成したタイミ
ングスリーブとを有する燃料噴射ポンプであつて
、 前記タイミングスリーブの前記スピルポートに
対向する前記プランジヤバレルの内壁面に緩衝用
凹部を形成したことを特徴とする燃料噴射ポンプ
。[Scope of Claim for Utility Model Registration] A plunger barrel having a fuel pressure chamber; A plunger that reciprocates within the plunger barrel to suck in fuel from the fuel reservoir chamber and forcefully transport the fuel from the fuel pressure chamber; A fuel injection pump including a timing sleeve that is slidably fitted between the plunger and the plunger barrel and has a spill port formed therein, the timing sleeve facing the spill port of the timing sleeve. A fuel injection pump characterized in that a buffer recess is formed in an inner wall surface of the plunger barrel.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989099155U JP2515637Y2 (en) | 1989-08-28 | 1989-08-28 | Fuel injection pump |
| DE19904023507 DE4023507C2 (en) | 1989-08-28 | 1990-07-24 | Fuel injection pump |
| US08/016,665 US5364243A (en) | 1989-08-02 | 1993-02-10 | Fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989099155U JP2515637Y2 (en) | 1989-08-28 | 1989-08-28 | Fuel injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0341161U true JPH0341161U (en) | 1991-04-19 |
| JP2515637Y2 JP2515637Y2 (en) | 1996-10-30 |
Family
ID=14239793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989099155U Expired - Lifetime JP2515637Y2 (en) | 1989-08-02 | 1989-08-28 | Fuel injection pump |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2515637Y2 (en) |
| DE (1) | DE4023507C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4041503C2 (en) * | 1990-12-22 | 2001-02-15 | Bosch Gmbh Robert | Fuel injection pump for internal combustion engines |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593959A (en) * | 1979-01-11 | 1980-07-16 | Bosch Gmbh Robert | Fuel injection pump for internal combustion engine |
| JPS61167469U (en) * | 1985-04-05 | 1986-10-17 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT304946B (en) * | 1971-05-07 | 1973-01-25 | Friedmann & Maier Ag | Injection pump |
| CS188366B1 (en) * | 1975-03-27 | 1979-03-30 | Jaromir Indra | Injection pump for oil engines,particularly for motors working with the high injection pressures |
| JPS5759054A (en) * | 1980-09-25 | 1982-04-09 | Mitsubishi Heavy Ind Ltd | Fuel injection pump |
| JPS58109554U (en) * | 1982-01-22 | 1983-07-26 | 三菱重工業株式会社 | Fuel injection pump refueling chamber |
| JPS59163169U (en) * | 1983-04-18 | 1984-11-01 | ヤンマーディーゼル株式会社 | Fuel injection pump for internal combustion engines |
| DE3428174A1 (en) * | 1984-07-31 | 1986-02-13 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
-
1989
- 1989-08-28 JP JP1989099155U patent/JP2515637Y2/en not_active Expired - Lifetime
-
1990
- 1990-07-24 DE DE19904023507 patent/DE4023507C2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593959A (en) * | 1979-01-11 | 1980-07-16 | Bosch Gmbh Robert | Fuel injection pump for internal combustion engine |
| JPS61167469U (en) * | 1985-04-05 | 1986-10-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2515637Y2 (en) | 1996-10-30 |
| DE4023507A1 (en) | 1991-03-14 |
| DE4023507C2 (en) | 1996-06-20 |
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