JPS6026162A - Fuel injection pump for diesel engine - Google Patents
Fuel injection pump for diesel engineInfo
- Publication number
- JPS6026162A JPS6026162A JP13497883A JP13497883A JPS6026162A JP S6026162 A JPS6026162 A JP S6026162A JP 13497883 A JP13497883 A JP 13497883A JP 13497883 A JP13497883 A JP 13497883A JP S6026162 A JPS6026162 A JP S6026162A
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- rack
- injection pump
- control
- plunger
- 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 title claims abstract description 11
- 238000002347 injection Methods 0.000 title claims abstract description 11
- 239000007924 injection Substances 0.000 title claims abstract description 11
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012827 research and development Methods 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
- F02M59/44—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
- F02M59/48—Assembling; Disassembling; Replacing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は、ディーゼル機関の燃料噴射ポンプに関する。[Detailed description of the invention] The present invention relates to a fuel injection pump for a diesel engine.
現在、最も多く使用されているこの種の燃料噴射ポンプ
は、判型、分配型、単独型、ユニットインジェクタの４
種類であって、このうち１例えば、判型ポンプの改良は
多数提案されているが、いずれもボッシュ型を基本とし
、構造、作動は殆んど同じであり、慣らされた技術とし
て安定した信頼性の高い燃料噴射ポンプとし多用されて
いる。にもかかわらず、更に、小型、軽量であって、部
品点数を小なくするニーズがあり、また、保守・点検を
容易にしたいニーズ、安価をめるニーズがあって、研究
・開発は進められている。Currently, there are four types of fuel injection pumps that are most commonly used: size type, distribution type, individual type, and unit injector type.
Among them, for example, many improvements to the size pump have been proposed, but all of them are based on the Bosch type and have almost the same structure and operation, and are stable and reliable as a well-practiced technology. It is widely used as a highly efficient fuel injection pump. Despite this, there is a need for smaller, lighter, and fewer parts, as well as easier maintenance and inspection, and lower costs, so research and development continues. ing.
本発明は、以上の背景のもとて創作されたもので、殊に
１部品点数が多く、生産性に欠ける点を改善しようとす
るものである。The present invention has been created against the above background, and is intended to improve the problem of low productivity due to the large number of parts.
以下、本発明の構成を添付図面に示す実施例にもとづき
詳細に説明する。Hereinafter, the structure of the present invention will be described in detail based on embodiments shown in the accompanying drawings.
第１図及び第２図において、１は糸ンブｔｚｆ）ランク
、２はプランジャバレル、３はプランジャ、４はデリベ
リバルブ、５はロアスプリングシート、６はアッパスプ
リングシート、７はプランジャスプリング、８はデリベ
リバルブホルダ、９はデリベリバルブシート、１０はタ
ペットローラ、１１は燃料油入口であって、これらの構
造は普通に知られている。In Figs. 1 and 2, 1 is a thread cylinder rank, 2 is a plunger barrel, 3 is a plunger, 4 is a delivery valve, 5 is a lower spring seat, 6 is an upper spring seat, 7 is a plunger spring, and 8 is a delivery valve. The structure of the delivery valve holder, 9 is a delivery valve seat, 10 is a tappet roller, and 11 is a fuel oil inlet, these structures are commonly known.
ここで本実施例では、コントロールスリーブ１２のコン
トロールピニオンに噛合う：Ｉントロールラック１３を
板状と踵がバナ（図示せず）と連結するラックピン１４
を凹状とし該コントロールラック１３と一体にしている
。すなわち、コントロールラツク１３の歯数は２４あっ
て、図示の２シリンダ用には２ｉ＝Ｊ所にランク歯１３
か設けられるが、これを焼結合金で形成するため、これ
らランク歯１３及Ｏ・ラックピン１４は１度に成形でき
る。In this embodiment, a rack pin 14 meshing with the control pinion of the control sleeve 12 connects the control rack 13 with a plate shape and a heel (not shown).
has a concave shape and is integrated with the control rack 13. That is, the number of teeth of the control rack 13 is 24, and for the two cylinders shown, the rank tooth 13 is located at 2i=J.
However, since these are formed from a sintered alloy, these rank teeth 13 and O/rack pins 14 can be molded at one time.
また、従来のコントロールラック１３を挿入する円形の
挿入用はポンプハウジング１に貫通して設けているが、
本実施例の場合、段部１５を上下に設けた横長の開口部
１６を設け、該開口部１６にコントロールラック１３を
添設し、更に外側から板状の蓋１７で被蓋し、該蓋１７
をボルト１８でポンプハウジング１に固着する。更に該
蓋１７には長孔１９を設け、長孔１９よりラックピン１
４を突出させ、ガバナのレバーと連結させる。なお、ポ
ンプハウジング１は底部のない、したかって、カムを内
蔵しないタイプとし、クランクケース内の飛沫油で潤滑
する。In addition, although the circular insertion portion for inserting the conventional control rack 13 is provided through the pump housing 1,
In the case of this embodiment, a horizontally long opening 16 with stepped portions 15 provided above and below is provided, a control rack 13 is attached to the opening 16, and a plate-shaped lid 17 is further covered from the outside. 17
is fixed to the pump housing 1 with bolts 18. Furthermore, a long hole 19 is provided in the lid 17, and the rack pin 1 is inserted through the long hole 19.
4 and connect it to the governor lever. The pump housing 1 is of a type without a bottom and therefore does not have a built-in cam, and is lubricated with oil splashed in the crankcase.
第３図から第５図にかけて示すものは、他の例で、ポン
プハウジング１、プランジャバレル２、プランジャ３、
デリベリバルブ４、アッパスプリングシート６、プラン
ジャスプリング７、デリベリバルブホルダ８、デリベリ
バルブシート９□、タペットローラ１０、コントロール
スリーブ２０、コントロールランク２１などの構造は、
普通に知られている。3 to 5 are other examples, including a pump housing 1, a plunger barrel 2, a plunger 3,
The structure of the delivery valve 4, upper spring seat 6, plunger spring 7, delivery valve holder 8, delivery valve seat 9□, tappet roller 10, control sleeve 20, control rank 21, etc.
commonly known.
ここでこの例では、判型ポンプであって、ポンプハウジ
ング１に窓２２を有し、該窓２２に側蓋を装着し、側蓋
を外してロアスプリングシート２３を、分解工具２４で
もって持ち」−げ、燃料噴射ポンプを分解する構造にな
っている。In this example, the pump is of a size type, and the pump housing 1 has a window 22, a side cover is attached to the window 22, the side cover is removed, and the lower spring seat 23 is held with the disassembly tool 24. - The structure is such that the fuel injection pump can be disassembled.
すなわち、プランジャ３の下端のフランジ部がロアスプ
リングシート２３と係脱自在に掛止し、該ロアスプリン
グシート２３の下面の凹部２５に、タペットローラ１０
を抱持したタペット２６に螺着したアジャステングボル
ト２７の頭部が嵌入している。そして、ロアスプリング
シート２３番よ、第４図（５）、 （１３１に示すよう
に、いわゆる錠穴結合機朽で、プランジャ３の下端のフ
ランジ部が横方向より入れる横穴２８とプランジャスプ
リング７を受けるフランジ２９を有し、特に、該フラン
ジ２９には、横穴２８と直交するところに、半円の切欠
３０．３Ｑを設けている。したがって、第３図で、カム
３１の山にタペットローラ１０か当接しているときに、
すなわち、ロアスプリングシート２３か最高部にあると
きに、分解工具２４を差し入れて、該分解工具２４でも
ってプランジャスプリング７を支持し、カム３１を回動
させれば、タペットローラ１０は降下し、ロアスプリン
グシート２３は自由になって、容易に取り出すことがで
きる。That is, the flange portion at the lower end of the plunger 3 is removably engaged with the lower spring seat 23, and the tappet roller 10 is engaged with the recess 25 on the lower surface of the lower spring seat 23.
The head of an adjusting bolt 27 screwed into the tappet 26 holding the screw is inserted into the tappet 26. Lower spring seat No. 23, Figure 4 (5), (131) As shown in Fig. 4 (5), a so-called lock hole coupling mechanism connects the horizontal hole 28 into which the flange section at the lower end of the plunger 3 enters from the side and the plunger spring 7. The flange 29 has a receiving flange 29, and in particular, the flange 29 is provided with a semicircular notch 30.3Q at a location perpendicular to the horizontal hole 28. Therefore, in FIG. or when in contact with
That is, when the lower spring seat 23 is at its highest position, if the disassembly tool 24 is inserted, the plunger spring 7 is supported by the disassembly tool 24, and the cam 31 is rotated, the tappet roller 10 is lowered. The lower spring seat 23 becomes free and can be easily taken out.
該分解工具２４を評言すれは、第５図へ、 （Ｂｌ 。To evaluate the disassembly tool 24, please refer to FIG. 5 (Bl).
（ｑのようになっている。（へ）は第３図に示すような
側面図で、（Ｂ）は（ＡｌのＡ矢視図、（Ｑは（Ａ）の
Ｃ矢視図で２枚の板体３２．３２を基部でピン３３で枢
支し、板体３２ 、３２が開閉するようになっている。(It looks like q.) (f) is a side view as shown in Fig. 3, (B) is a view of (A in direction of Al), and (Q is a view of (A) in direction of C). The plate bodies 32, 32 are pivoted at the base by a pin 33, so that the plates 32, 32 can be opened and closed.
板体３２の先端は一部内方に曲げられ、プランジャスプ
リング７の受部３４，３４を形成し、先端の下側には、
アジャステングボルト２７の頭部が嵌合する凹部３５を
形成している。したがって、板体３２．３２を開いた状
態でポンプハウジング１内に入れ、受部３４．３４をロ
アスプリングシート２３の切欠３０．３０に入れるべく
閉じる。The tip of the plate 32 is partially bent inward to form the receiving portions 34, 34 of the plunger spring 7, and the bottom of the tip has a
A recess 35 is formed into which the head of the adjusting bolt 27 fits. Therefore, the plate 32.32 is inserted into the pump housing 1 in an open state and closed so that the receiving part 34.34 is inserted into the cutout 30.30 of the lower spring seat 23.
そして、前記のようにカム３１を回わせば、プランジャ
スプリング７が受部３４，３４に乗りロアスプリングシ
ート２３は自由となって、取り外すことができる。その
結果、ロアスプリングシート２３とプランジャ３との掛
止が外れ、デリベリノくルブホルダ８、デリベリバルブ
シート９、プランジャバレル２、プランジャ３の順に、
上方へ抜き出し、分解できる。そして、アジャステング
ボルト２７を外し、シムプレート３６（第３図参照）を
交換することができ、タペット２６のプレストローク調
整を行うことができる。Then, by rotating the cam 31 as described above, the plunger spring 7 rides on the receiving portions 34, 34, and the lower spring seat 23 becomes free and can be removed. As a result, the lower spring seat 23 and the plunger 3 are unlatched, and the delivery valve is moved in the following order: the valve holder 8, the delivery valve seat 9, the plunger barrel 2, and the plunger 3.
It can be pulled out upwards and disassembled. Then, the adjusting bolt 27 can be removed, the shim plate 36 (see FIG. 3) can be replaced, and the pre-stroke adjustment of the tappet 26 can be performed.
以上要するに本発明は、第６図に示すように、燃料噴射
ポンプのコントロールラックを板状とし、片面にランク
歯１３を、他の面にランクピン用の突片を一体成形によ
り構成したディーゼル機関の燃料噴射ポンプであるから
、物品点数を節減できるとともに、生産性を向上し、コ
ストダウンとすることかできる。In summary, the present invention provides a diesel engine in which, as shown in FIG. 6, the control rack of the fuel injection pump is formed into a plate shape, and the rank teeth 13 are integrally formed on one side and the projection piece for the rank pin is formed on the other side. Since it is a fuel injection pump, the number of items can be reduced, productivity can be improved, and costs can be reduced.
第１図は本発明の実施例の断面図、第２図は第１図のＸ
矢視側面図、第３図は他の例の断面図、第４図は第：３
図で用いるロアスプリングシートの詳細図、第５図は第
３図で用いる分解工具の詳細図、第６図は第１図のコン
トロールラックの斜視図を示す。
■・・・ポンプハウシング、１２・・・コントロールス
リーブ、１３・・・コントロールラック、１４・・・ラ
ンクピン。
代理人弁理士 岡 部 吉 彦
第１ 図
第２図FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the embodiment of the present invention.
A side view in the direction of arrows, Fig. 3 is a sectional view of another example, and Fig. 4 is a sectional view of another example.
FIG. 5 is a detailed view of the lower spring seat used in the figure, FIG. 5 is a detailed view of the disassembly tool used in FIG. 3, and FIG. 6 is a perspective view of the control rack shown in FIG. 1. ■... Pump housing, 12... Control sleeve, 13... Control rack, 14... Rank pin. Representative Patent Attorney Yoshihiko Okabe Figure 1 Figure 2
Claims (1)
にランク歯を、他の面にラックピン用の突片を一体成形
に上り構成したディーゼル機関の燃料噴射ポンプ。A diesel engine fuel injection pump in which the control rack of the fuel injection pump is in the form of a plate, with rank teeth on one side and protrusions for rack pins on the other side that are integrally molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497883A JPS6026162A (en) | 1983-07-23 | 1983-07-23 | Fuel injection pump for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497883A JPS6026162A (en) | 1983-07-23 | 1983-07-23 | Fuel injection pump for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6026162A true JPS6026162A (en) | 1985-02-09 |
Family
ID=15141052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13497883A Pending JPS6026162A (en) | 1983-07-23 | 1983-07-23 | Fuel injection pump for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6026162A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321807A (en) * | 2013-07-10 | 2013-09-25 | 无锡开普动力有限公司 | Guiding structure of idler-wheel type tappet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5112580U (en) * | 1974-07-13 | 1976-01-29 | ||
| JPS51116331A (en) * | 1975-04-03 | 1976-10-13 | Kubota Ltd | Fuel injection pump |
-
1983
- 1983-07-23 JP JP13497883A patent/JPS6026162A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5112580U (en) * | 1974-07-13 | 1976-01-29 | ||
| JPS51116331A (en) * | 1975-04-03 | 1976-10-13 | Kubota Ltd | Fuel injection pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321807A (en) * | 2013-07-10 | 2013-09-25 | 无锡开普动力有限公司 | Guiding structure of idler-wheel type tappet |
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