JPS6129059U - Fuel injection pump for internal combustion engines - Google Patents
Fuel injection pump for internal combustion enginesInfo
- Publication number
- JPS6129059U JPS6129059U JP1985101809U JP10180985U JPS6129059U JP S6129059 U JPS6129059 U JP S6129059U JP 1985101809 U JP1985101809 U JP 1985101809U JP 10180985 U JP10180985 U JP 10180985U JP S6129059 U JPS6129059 U JP S6129059U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- fuel injection
- control
- circumferential groove
- groove
- 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 title claims description 17
- 238000002347 injection Methods 0.000 title claims description 9
- 239000007924 injection Substances 0.000 title claims description 9
- 238000002485 combustion reaction Methods 0.000 title claims 3
- 238000005086 pumping Methods 0.000 claims 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
- F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
- F02M59/265—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders characterised by the arrangement or form of spill port of spill contour on the piston
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
第１図は本考案による燃料噴射ポンプの１実施例の部分
縦断面図、第２図は第１図とは異なる構成のポンプピス
トンの部分斜視図、第３図は第２図の■一ｍ線に沿って
断面して示した拡大部分図である。
１０・・・・・・燃料噴射ポンプ、１１・・・・・・ケ
ーシング、１２・・・・・・ポンプシリンダ、１２ａ・
・・川壁、１３・・・・・・シリンダ孔、１ ４．
１ ４’−−−−−−ポンプピストン、１５・・曲端面
、１６・・曲ポンプ作業室、１７・・・・・・吐出し弁
、１８・・曲燃料供給口、２１・・曲吸込室；２２・・
・・・・周面、２３．２３’・・・・・・制御みぞ、２
４．２５・・・・・・制御縁、２６・・・・・・制御面
、２７・・・・・・漏れ接続部、２８・・曲周みぞ、２
８ａ・・曲制限縁、２９・・・・・・接続流路、３１・
・曲絞り。Fig. 1 is a partial vertical sectional view of an embodiment of the fuel injection pump according to the present invention, Fig. 2 is a partial perspective view of a pump piston having a different configuration from that in Fig. 1, and Fig. 3 is a 1 m FIG. 3 is an enlarged partial view taken in section along a line. 10...Fuel injection pump, 11...Casing, 12...Pump cylinder, 12a...
...River wall, 13...Cylinder hole, 1 4.
1 4'------Pump piston, 15...Curved end surface, 16...Curved pump working chamber, 17...Discharge valve, 18...Curved fuel supply port, 21...Curved suction Room; 22...
...Surrounding surface, 23.23' ...Control groove, 2
4.25...Control edge, 26...Control surface, 27...Leakage connection, 28...Curved circumferential groove, 2
8a... Curved restriction edge, 29... Connection flow path, 31...
・Song aperture.
Claims (1)
ンダ１２内で案内される、一方がポンプピストン１４の
端面１５によって、かつ他方が吐出し弁１７｛；よって
制限されたポンプ作業室１６から燃料を送り出すための
ポンプピストン１４を備えており、ポンプシリンダ１２
の壁１２ａに設けられた燃料供給口１８と、ポンプピス
トン１４の周面２２に存在していて、しかも端面側の制
御縁２５と駆動側の制御縁２４とによって制限された制
御面２６とを備えており、かつ単に吐出行程め開始時に
おいてのみポンプ作業室１６と燃料供給口１８．との間
で有効となる漏れ接続部２７を備えており、かつ上記の
制御面２６の燃料供給口１８に対する相対的な位置が吐
出開始時点と吐出終了時点を設定するようになっており
、かつ上記の漏れ接続部２７が制御面２６内で端面側の
制御縁２５に対して少なくともほぼ平行に僅かな距離を
置いて延びていて、しかも環状凹所として構成された周
みぞ２８と、絞り３１の作用を受ける、、周みぞ２８か
らポンプ作業室１６までの接続流路２９とを備えている
形式のものにおいて、接続流路２９がポンプピストン１
４．１４’の縦軸線Ａの方向にポンプピストンの端面か
ら少なくとも周みぞ２８まで延びる縦みぞとして構成さ
れて−おり、流過横断面Ｑと、調節された吐出量に関連
した、ポンプシリンダ１２の壁１２ａによって覆われる
周みぞ２８のその都度の有効な長さしとが漏れ接続部２
７のｉり３１を構成しており、かつポンプピストン１４
．１４’の端面１５と反対の側の、周みぞ２８の削限縁
２８ａと端面１５との間の距離ａが燃料供給口１８の直
径よりも小さいことを特徴とする、内燃機関用の燃料噴
射ポンプ。 ２ ポンプピストン１４の周面２２に形成された、駆動
側の制御縁２４を構成する制御みぞ２３を備えており、
接続流路２９を構成する縦みぞが同時に停止みぞとして
用いられそおり、かつ周みぞ２８並びに制御みぞ２３，
２３’をポンプ作業室１６！に接続している、実用新案
登録請求の範囲第１項記載の燃料噴射ポンプ。 ３ 吐出し弁１７を備えており、周みぞ２８の流過横断
ｉＱの幅Ｂおよび深さＴが十分の数簡にすぎず、かつそ
れぞれピストン直径ｄの約３〜６％に設定されている、
実用新案登録請求の範囲第１項または第２項記載の燃料
噴射ポンプ。 ４ 周みぞ２８の距離ａが燃料供給口１８の直径Ｄのｌ
／２よりも小さな数値に設定されている、実用新案登録
請求の範囲第１項から第３項までのいずれか１つの項記
載の燃料噴射ポンプ。[Claims for Utility Model Registration] 1. A fuel injection pump for an internal combustion engine, guided in a pump cylinder 12, on the one hand by an end face 15 of a pump piston 14 and on the other hand by a discharge valve 17; It is equipped with a pump piston 14 for pumping fuel from a pump working chamber 16 which is connected to a pump cylinder 12.
A fuel supply port 18 provided in the wall 12a and a control surface 26 present on the circumferential surface 22 of the pump piston 14 and limited by a control edge 25 on the end face side and a control edge 24 on the drive side. The pump working chamber 16 and the fuel supply port 18. a leakage connection 27 which is effective between the fuel supply port 18 and the control surface 26, the relative position of said control surface 26 with respect to the fuel supply port 18 being such that it sets the discharge start and discharge end times, and The above-mentioned leakage connection 27 extends in the control face 26 at least approximately parallel to the end-side control edge 25 at a small distance, and is provided with a circumferential groove 28 and an aperture 31 which is configured as an annular recess. , and a connecting passage 29 from the circumferential groove 28 to the pump working chamber 16, in which the connecting passage 29 is connected to the pump piston 1.
4.14' as a longitudinal groove extending from the end face of the pump piston in the direction of the longitudinal axis A of the pump piston at least as far as the circumferential groove 28 and associated with the flow cross section Q and the adjusted delivery volume of the pump cylinder 12. The respective effective length of the circumferential groove 28 covered by the wall 12a of the leakage connection 2
7, and the pump piston 14
．． Fuel injection for an internal combustion engine, characterized in that the distance a between the cutting edge 28a of the circumferential groove 28 and the end surface 15 on the side opposite to the end surface 15 of 14' is smaller than the diameter of the fuel supply port 18. pump. 2. A control groove 23 is formed on the circumferential surface 22 of the pump piston 14 and constitutes a control edge 24 on the driving side.
The vertical groove constituting the connecting flow path 29 is likely to be used as a stop groove at the same time, and the circumferential groove 28 and the control groove 23,
23' is the pump work room 16! The fuel injection pump according to claim 1 of the utility model registration claim, which is connected to the fuel injection pump. 3. It is equipped with a discharge valve 17, and the width B and depth T of the flow cross section iQ of the circumferential groove 28 are only a few tenths, and are each set to about 3 to 6% of the piston diameter d. ,
A fuel injection pump according to claim 1 or 2 of the utility model registration claim. 4 The distance a of the circumferential groove 28 is l of the diameter D of the fuel supply port 18
The fuel injection pump according to any one of claims 1 to 3 of the utility model registration claim, wherein the value is set to a value smaller than /2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3424989.3 | 1984-07-06 | ||
| DE3424989A DE3424989C2 (en) | 1984-07-06 | 1984-07-06 | Fuel injection pump for internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6129059U true JPS6129059U (en) | 1986-02-21 |
| JPH0429083Y2 JPH0429083Y2 (en) | 1992-07-15 |
Family
ID=6240040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985101809U Granted JPS6129059U (en) | 1984-07-06 | 1985-07-05 | Fuel injection pump for internal combustion engines |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS6129059U (en) |
| DE (1) | DE3424989C2 (en) |
| GB (1) | GB2163492B (en) |
| IT (1) | IT1185145B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3804843A1 (en) * | 1988-02-17 | 1989-08-31 | Bosch Gmbh Robert | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
| DE4027842A1 (en) * | 1990-09-03 | 1992-03-05 | Kloeckner Humboldt Deutz Ag | Fuel injection system for compression ignition engine - has pressure equalising valve and plunger with stepped dia. |
| DE19630337C2 (en) * | 1996-07-26 | 1999-02-18 | Hatz Motoren | Fuel injection pump for injection in internal combustion engines, in particular single-cylinder diesel engines |
| CA2444874C (en) | 2001-05-14 | 2007-04-10 | Johnsondiversey, Inc. | Eductor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH269597A (en) * | 1947-03-22 | 1950-07-15 | Atlas Diesel Ab | Fuel injection device for internal combustion engines. |
| JPS474319U (en) * | 1971-02-10 | 1972-09-09 | ||
| JPS5032650U (en) * | 1973-07-19 | 1975-04-09 | ||
| JPS58139575U (en) * | 1982-03-17 | 1983-09-20 | ヤンマーディーゼル株式会社 | fuel injection pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB411353A (en) * | 1932-10-21 | 1934-06-07 | Bosch Robert | Improvements in or relating to fuel injection pumps for internal combustion engines |
| GB514011A (en) * | 1938-04-26 | 1939-10-27 | Gardner & Sons Ltd | Improvements relating to fuel injection pumps for compression ignition oil engines |
| US2565681A (en) * | 1945-11-01 | 1951-08-28 | Caterpillar Tractor Co | Fuel injection for internal combustion engines |
| US3435811A (en) * | 1967-06-14 | 1969-04-01 | Int Harvester Co | Multiple injection fuel pump |
| FR2482669A2 (en) * | 1979-05-28 | 1981-11-20 | Semt | IMPROVEMENT TO INJECTION PUMP FOR INTERNAL COMBUSTION ENGINE |
-
1984
- 1984-07-06 DE DE3424989A patent/DE3424989C2/en not_active Expired - Lifetime
-
1985
- 1985-06-28 IT IT21359/85A patent/IT1185145B/en active
- 1985-07-04 GB GB08517015A patent/GB2163492B/en not_active Expired
- 1985-07-05 JP JP1985101809U patent/JPS6129059U/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH269597A (en) * | 1947-03-22 | 1950-07-15 | Atlas Diesel Ab | Fuel injection device for internal combustion engines. |
| JPS474319U (en) * | 1971-02-10 | 1972-09-09 | ||
| JPS5032650U (en) * | 1973-07-19 | 1975-04-09 | ||
| JPS58139575U (en) * | 1982-03-17 | 1983-09-20 | ヤンマーディーゼル株式会社 | fuel injection pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0429083Y2 (en) | 1992-07-15 |
| DE3424989C2 (en) | 1994-09-29 |
| GB2163492A (en) | 1986-02-26 |
| DE3424989A1 (en) | 1986-01-16 |
| GB8517015D0 (en) | 1985-08-07 |
| GB2163492B (en) | 1988-05-05 |
| IT8521359A0 (en) | 1985-06-28 |
| IT1185145B (en) | 1987-11-04 |
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