JPS6346670U - - Google Patents
Info
- Publication number
- JPS6346670U JPS6346670U JP14095786U JP14095786U JPS6346670U JP S6346670 U JPS6346670 U JP S6346670U JP 14095786 U JP14095786 U JP 14095786U JP 14095786 U JP14095786 U JP 14095786U JP S6346670 U JPS6346670 U JP S6346670U
- Authority
- JP
- Japan
- Prior art keywords
- injection pump
- pressurizing chamber
- injection device
- pilot injection
- fuel injection
- 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 7
- 238000009825 accumulation Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
- Control Of Temperature (AREA)
Description
第１図は本考案一実施例のパイロツト噴射装置
を示す断面図、第２図は上記パイロツト噴射装置
を用いた燃料噴射ポンプのパイロツト噴射装置を
示す概略構成図、第３図ａ，ｂ及び第４図ａ，ｂ
はその感温部材４６を示す構造図、第５図はその
感温部材４６の周囲温度ｔとスプリング４８の押
圧付勢力Ｐとの関係を示すグラフ、第６図は同じ
く押圧付勢力Ｐとパイロツト噴射量Ｑとの関係を
示すグラフ、第７図はデイーゼル機関の燃焼室の
温度を示す冷却水温ｔｗと要求されるパイロツト
噴射量Ｑｒとの関係を示すグラフ、第８図は感温
部材４６をシム５７とキヤツプ５０とに介装させ
たパイロツト噴射装置を示す断面図、第９図は従
来より用いられているパイロツト噴射装置を示す
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、４３……アキユムレー
トピストン、４３ｄ……アキユムレートピストン
小径部、４４……シリンダ、４５……ストツパ、
４６……感温部材、４７……プレツシヤピン、４
８……スプリング、５７……シム。
Fig. 1 is a sectional view showing a pilot injection device according to an embodiment of the present invention, Fig. 2 is a schematic configuration diagram showing a pilot injection device of a fuel injection pump using the above pilot injection device, and Figs. Figure 4 a, b
is a structural diagram showing the temperature sensing member 46, FIG. 5 is a graph showing the relationship between the ambient temperature t of the temperature sensing member 46 and the pressing force P of the spring 48, and FIG. 6 is a graph showing the relationship between the pressing force P and the pilot. 7 is a graph showing the relationship between the cooling water temperature tw, which indicates the temperature of the combustion chamber of a diesel engine, and the required pilot injection amount Qr. FIG. 8 is a graph showing the relationship between the temperature sensing member 46 and the required pilot injection amount Qr. FIG. 9 is a sectional view showing a pilot injection device interposed between the shim 57 and the cap 50, and FIG. 9 is a sectional view showing a conventionally used pilot injection device. 1... Fuel injection pump, 17... Pressurization chamber, 20
... Pilot injection device, 43 ... Accumulation rate piston, 43d ... Accumulation rate piston small diameter part, 44 ... Cylinder, 45 ... Stopper,
46... Temperature sensing member, 47... Pressure pin, 4
8...spring, 57...shim.
Claims (1)
形成されたシリンダ内に嵌挿され、上記加圧室の
燃料圧力により所定量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上記加圧室側に押
圧付勢するスプリングと、 を備えた燃料噴射ポンプのパイロツト噴射装置
において、 上記スプリングの押圧付勢力を、雰囲気温度が
高くなるほど小さく、該雰囲気温度が低くなるほ
ど大きく調節する付勢力調節手段を備えたことを
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] An accumulator that is fitted into a cylinder formed between a pressurizing chamber and a low fuel pressure chamber of a fuel injection pump and is pushed and moved by a predetermined amount by the fuel pressure in the pressurizing chamber. A pilot injection device for a fuel injection pump comprising: a piston; and a spring that presses and biases the accumulation piston toward the pressurizing chamber; A pilot injection device for a fuel injection pump, comprising a biasing force adjusting means that increases the biasing force as the ambient temperature decreases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14095786U JPS6346670U (en) | 1986-09-11 | 1986-09-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14095786U JPS6346670U (en) | 1986-09-11 | 1986-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6346670U true JPS6346670U (en) | 1988-03-29 |
Family
ID=31048299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14095786U Pending JPS6346670U (en) | 1986-09-11 | 1986-09-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6346670U (en) |
-
1986
- 1986-09-11 JP JP14095786U patent/JPS6346670U/ja active Pending
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