JPS6378163U - - Google Patents
Info
- Publication number
- JPS6378163U JPS6378163U JP17367586U JP17367586U JPS6378163U JP S6378163 U JPS6378163 U JP S6378163U JP 17367586 U JP17367586 U JP 17367586U JP 17367586 U JP17367586 U JP 17367586U JP S6378163 U JPS6378163 U JP S6378163U
- Authority
- JP
- Japan
- Prior art keywords
- pressurizing chamber
- fuel injection
- fuel
- pilot injection
- injection pump
- 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
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 9
- 238000009825 accumulation Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図ないし第５図は、本考案の燃料噴射ポン
プのパイロツト噴射装置の一実施例を表わしてお
り、第１図は本考案の一実施例のパイロツト噴射
装置の構成を表わす破断説明図、第２図はこのパ
イロツト噴射装置が用いられる燃料噴射ポンプの
構成を表わす破断説明図、第３図はこのパイロツ
ト噴射装置のストツパ付近の部分拡大図、第４図
はアキユムレートピストン移動量とスプリング付
勢力との関係を示すグラフ、第５図はスプリング
付勢力とアキユムレートピストンの終速度との関
係を示すグラフ、第６図は従来のパイロツト噴射
装置とそれが取付けられた燃料噴射ポンプの加圧
室部分を表わす断面図、である。
１…燃料噴射ポンプ、１７…加圧室、２０…パ
イロツト噴射装置、４６…アキユムレートピスト
ン、４８…シリンダ、５０…ストツパ、５６…主
スプリング、５８…補助スプリング。
1 to 5 show an embodiment of a pilot injection device for a fuel injection pump according to the present invention, and FIG. 1 is a cutaway explanatory view showing the configuration of a pilot injection device according to an embodiment of the present invention. Fig. 2 is a cutaway explanatory diagram showing the configuration of a fuel injection pump in which this pilot injection device is used, Fig. 3 is a partially enlarged view of the vicinity of the stopper of this pilot injection device, and Fig. 4 shows the amount of movement of the accumulated piston and the spring. Figure 5 is a graph showing the relationship between the spring biasing force and the final velocity of the accumulation piston, and Figure 6 is a graph showing the relationship between the spring biasing force and the final velocity of the accumulation piston. It is a sectional view showing a pressurization chamber part. DESCRIPTION OF SYMBOLS 1...Fuel injection pump, 17...Pressure chamber, 20...Pilot injection device, 46...Accumulate piston, 48...Cylinder, 50...Stopper, 56...Main spring, 58...Auxiliary spring.
Claims (1)
されたシリンダと、 該シリンダ内に嵌挿され、上記加圧室の燃料圧
力により押圧移動されるアキユムレートピストン
と、 該アキユムレートピストンをプレツシヤピンを
介して上記加圧室側に押圧付勢するスプリングと
、 上記アキユムレートピストンの、上記加圧室内
の燃料圧力上昇により移動する移動量を制限する
ストツパと、 を備え、上記燃料噴射ポンプの燃料主噴射の前に
パイロツト噴射を実行させるパイロツト噴射装置
において、 更に、上記アキユムレートピストンが上記加圧
室側から上記ストツパ側へ移動しているとき、所
定の位置で上記プレツシヤピンと当接し、上記ア
キユムレートピストンをプレツシヤピンを介して
上記加圧室側に押圧付勢する補助スプリングを、
設けたことを特徴とする燃料噴射ポンプのパイロ
ツト噴射装置。[Scope of Claim for Utility Model Registration] A cylinder connected to a pressurizing chamber of a fuel injection pump through a communication hole, and an accumulator that is inserted into the cylinder and is pressed and moved by the fuel pressure in the pressurizing chamber. A piston, a spring that presses the accumulation piston toward the pressurizing chamber via a pressure pin, and a stopper that limits the amount of movement of the accumulation piston due to an increase in fuel pressure in the pressurizing chamber. and a pilot injection device for performing pilot injection before main fuel injection of the fuel injection pump, further comprising: when the accumulation piston is moving from the pressurizing chamber side to the stopper side, an auxiliary spring that contacts the pressure pin at a predetermined position and presses the accumulation piston toward the pressurizing chamber via the pressure pin;
A pilot injection device for a fuel injection pump, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17367586U JPS6378163U (en) | 1986-11-12 | 1986-11-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17367586U JPS6378163U (en) | 1986-11-12 | 1986-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6378163U true JPS6378163U (en) | 1988-05-24 |
Family
ID=31111362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17367586U Pending JPS6378163U (en) | 1986-11-12 | 1986-11-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6378163U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61106971A (en) * | 1984-10-31 | 1986-05-24 | Diesel Kiki Co Ltd | Fuel injection pump |
-
1986
- 1986-11-12 JP JP17367586U patent/JPS6378163U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61106971A (en) * | 1984-10-31 | 1986-05-24 | Diesel Kiki Co Ltd | Fuel injection pump |
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