JPH01134729U - - Google Patents
Info
- Publication number
- JPH01134729U JPH01134729U JP2984188U JP2984188U JPH01134729U JP H01134729 U JPH01134729 U JP H01134729U JP 2984188 U JP2984188 U JP 2984188U JP 2984188 U JP2984188 U JP 2984188U JP H01134729 U JPH01134729 U JP H01134729U
- Authority
- JP
- Japan
- Prior art keywords
- combustion chamber
- sub
- main
- nozzle
- top surface
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の第１実施例を示す断面図、第
２図は同上第１実施例の平面図、第３図は燃料噴
射ノズルの断面図、第４図は燃料噴射ノズルの先
端部拡大図、第５図は副噴口だけから燃料噴射が
行われる運転領域と副噴口及び主噴口の両方から
燃料噴射が行われる運転領域を示す図、第６図燃
料噴射ノズルの噴射特性を示す図で、Ａは低速ま
たは低負荷時、Ｂは高速高負荷時、第７図は同上
実施例の作用を説明するための図である。
３…ピストン、４…燃焼室、４Ａ…主燃焼室、
４Ｂ…副燃焼室、５…突起部、１０…燃料噴射ノ
ズル、１５…主噴口、１６…副噴口。
Fig. 1 is a sectional view showing the first embodiment of the present invention, Fig. 2 is a plan view of the first embodiment, Fig. 3 is a sectional view of the fuel injection nozzle, and Fig. 4 is the tip of the fuel injection nozzle. Enlarged view, Figure 5 is a diagram showing an operating range where fuel injection is performed only from the sub-nozzle, and an operating range where fuel injection is performed from both the sub-nozzle and the main nozzle, and Figure 6 is a diagram showing the injection characteristics of the fuel injection nozzle. FIG. 7 is a diagram for explaining the operation of the above embodiment. A is at low speed or low load, B is at high speed and high load. 3... Piston, 4... Combustion chamber, 4A... Main combustion chamber,
4B...Sub-combustion chamber, 5...Protrusion, 10...Fuel injection nozzle, 15...Main nozzle, 16...Sub-nozzle.
Claims (1)
成し、該燃焼室に燃料噴射ノズルを臨ませたデイ
ーゼルエンジンにおいて、前記燃焼室の略中央部
に頂面が平坦な突起部を設けて主燃焼室を形成し
、燃焼室の周壁部に切欠部を設けて副燃焼室を形
成する一方、前記燃料噴射ノズルが、前記主燃焼
室の突起部頂面に向けて主噴霧を噴射する主噴口
と前記主噴霧に先駆けて噴射初期に前記副燃焼室
に向けて副噴霧を噴射する副噴口とを有すること
を特徴とするデイーゼルエンジン。 In a diesel engine in which a cavity is provided on the top surface of the piston to form a combustion chamber, and a fuel injection nozzle faces the combustion chamber, a protrusion with a flat top surface is provided approximately in the center of the combustion chamber to form a main combustion chamber. and a notch is provided in the peripheral wall of the combustion chamber to form a sub-combustion chamber, while the fuel injection nozzle has a main nozzle for injecting main spray toward the top surface of the protrusion of the main combustion chamber; 1. A diesel engine comprising a sub-nozzle that injects sub-spray toward the sub-combustion chamber at an early stage of injection prior to main spray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2984188U JPH01134729U (en) | 1988-03-08 | 1988-03-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2984188U JPH01134729U (en) | 1988-03-08 | 1988-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01134729U true JPH01134729U (en) | 1989-09-14 |
Family
ID=31254404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2984188U Pending JPH01134729U (en) | 1988-03-08 | 1988-03-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01134729U (en) |
-
1988
- 1988-03-08 JP JP2984188U patent/JPH01134729U/ja active Pending