JPH0280767U - - Google Patents
Info
- Publication number
- JPH0280767U JPH0280767U JP15896288U JP15896288U JPH0280767U JP H0280767 U JPH0280767 U JP H0280767U JP 15896288 U JP15896288 U JP 15896288U JP 15896288 U JP15896288 U JP 15896288U JP H0280767 U JPH0280767 U JP H0280767U
- Authority
- JP
- Japan
- Prior art keywords
- accumulator
- fuel
- piston
- small
- cylinder chamber
- 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 claims description 10
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 1
Description
第１図Ａ，Ｂは本考案による燃料噴射装置の一
実施例を示す、それぞれ異なつた作用状態の断面
図、第２図は本考案の燃料噴射装置のクランク角
度と噴射圧との関係を示すグラフ、第３図は従来
の燃料噴射装置の断面図である。
また、図面中１はアキユムレータ、２は増圧ア
キユムレータ、３は燃料通路、４は電磁切換弁、
５は大シリンダ室、６は大ピストン、７は小シリ
ンダ室、８は小ピストン、１５は油孔、１６は定
容積室である。
FIGS. 1A and 1B are cross-sectional views of an embodiment of the fuel injection device according to the present invention in different operating states, and FIG. 2 is a diagram showing the relationship between the crank angle and injection pressure of the fuel injection device according to the present invention. The graph and FIG. 3 are cross-sectional views of a conventional fuel injection device. In addition, in the drawing, 1 is an accumulator, 2 is a pressure booster accumulator, 3 is a fuel passage, 4 is an electromagnetic switching valve,
5 is a large cylinder chamber, 6 is a large piston, 7 is a small cylinder chamber, 8 is a small piston, 15 is an oil hole, and 16 is a constant volume chamber.
Claims (1)
ータと、大ピストンと小ピストンとを組み合せて
なる増圧アキユムレータと、該増圧アキユムレー
タの大ピストンにより画成される大シリンダ室及
び小ピストンにより画成されて燃料噴射ノズルに
連通する小シリンダ室と上記アキユムレータとを
結ぶ燃料通路と、該燃料通路に介装されて上記ア
キユムレータからの燃料を上記両シリンダ室へ選
択的に供給する切換弁とを有するデイーゼル機関
の燃料噴射装置において、上記小シリンダ室の壁
面の大ピストン側寄りに油孔を形成するとともに
、該油孔に連通する定容積室を設けたことを特徴
とするデイーゼル機関の燃料噴射装置。 An accumulator that stores pressurized fuel from a hydraulic pressure generation source, a pressure booster accumulator that combines a large piston and a small piston, and a large cylinder chamber defined by the large piston of the pressure booster accumulator and a small piston. a fuel passage connecting the accumulator to a small cylinder chamber that communicates with a fuel injection nozzle; and a switching valve that is interposed in the fuel passage and selectively supplies fuel from the accumulator to both cylinder chambers. A fuel injection device for a diesel engine, characterized in that an oil hole is formed on the wall surface of the small cylinder chamber closer to the large piston side, and a constant volume chamber communicating with the oil hole is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15896288U JPH0280767U (en) | 1988-12-08 | 1988-12-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15896288U JPH0280767U (en) | 1988-12-08 | 1988-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0280767U true JPH0280767U (en) | 1990-06-21 |
Family
ID=31439753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15896288U Pending JPH0280767U (en) | 1988-12-08 | 1988-12-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0280767U (en) |
-
1988
- 1988-12-08 JP JP15896288U patent/JPH0280767U/ja active Pending