JPH0188027U - - Google Patents
Info
- Publication number
- JPH0188027U JPH0188027U JP18381787U JP18381787U JPH0188027U JP H0188027 U JPH0188027 U JP H0188027U JP 18381787 U JP18381787 U JP 18381787U JP 18381787 U JP18381787 U JP 18381787U JP H0188027 U JPH0188027 U JP H0188027U
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- nozzle holes
- angle
- diameter
- row
- 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 5
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案の一実施例の構成説明図、第
２図は第１図方向からの矢視図、第３図はこの
考案の要部である上下２列の噴孔の配列を図解的
に示し、第４図は下列の噴孔の角度と燃費率との
関係図、第５図は上列の噴孔の角度と燃費率との
関係図、第６図はｄ／Ｄと燃費率との関係図、第
７図、第８図は本出願人がさきに提案した燃焼室
とノズルの噴孔の配列をそれぞれ示す。
１……噴射ノズル、４……噴孔、ｘ……下列の
噴孔の角度、ｙ……上列の噴孔の角度、ｚ……噴
霧中心ｏ，ｏ′の距離、ｄ……キヤビテイ径、Ｄ
……ボア径、Ｈ……キヤビテイの深さ。
Fig. 1 is an explanatory diagram of the configuration of one embodiment of this invention, Fig. 2 is a view taken from the direction of Fig. 1, and Fig. 3 is an illustration of the arrangement of two rows of nozzle holes, upper and lower, which is the main part of this invention. Figure 4 shows the relationship between the angle of the nozzle holes in the lower row and the fuel efficiency rate, Figure 5 shows the relationship between the angle of the nozzle holes in the upper row and the fuel efficiency rate, and Figure 6 shows the relationship between d/D and fuel efficiency. Figures 7 and 8 show the arrangement of the combustion chamber and the nozzle nozzle, respectively, as previously proposed by the applicant. 1...Injection nozzle, 4...Nozzle hole, x...Angle of lower row nozzle hole, y...Angle of upper row nozzle hole, z...Distance between spray centers o and o', d...Cavity diameter ,D
...Bore diameter, H...Cavity depth.
Claims (1)
Ｄが、 ０．５５≦ｄ／Ｄ≦０．８０ で且つキヤビテイの深さＨとキヤビテイ径ｄの比
Ｈ／ｄが、 Ｈ／ｄ〈０．４５ であるような燃焼室を有するピストンにおいて、
噴射ノズルの噴孔を上下２列で同心軸上に或る距
離Ｚだけ離れた点にそれぞれ中心をもつ円周上に
あり、しかも上、下列の噴孔を千鳥状に配置し、
上記噴孔の数を１０〜１６個とし、上列の噴孔の
角度ｙを ７５゜≦ｙ≦８０゜ とし、下列の噴孔の角度ｘを ５５゜≦ｘ≦７０゜ とし、上列の噴孔径をｄ１、下列の噴孔径をｄ２
とすると、 ｄ１≧ｄ２ とし、且つ ｄ１〈Ｚ〈５ｄ１ としたことを特徴とする、内燃機関の燃料噴射ノ
ズル装置。[Scope of claim for utility model registration] Ratio d/ of the cavity diameter d of the fuel chamber and the bore diameter D
In a piston having a combustion chamber in which D is 0.55≦d/D≦0.80 and the ratio H/d of cavity depth H and cavity diameter d is H/d<0.45,
The nozzle holes of the injection nozzle are arranged in two rows, upper and lower, on a circumference with their centers at points a certain distance Z apart on a concentric axis, and the nozzle holes in the upper and lower rows are arranged in a staggered manner,
The number of the nozzle holes is 10 to 16, the angle y of the upper row of nozzle holes is 75°≦y≦80°, the angle x of the lower row of nozzle holes is 55°≦x≦70°, and the angle y of the upper row of nozzle holes is 55°≦x≦70°. The nozzle hole diameter is d 1 and the nozzle hole diameter of the lower row is d 2
A fuel injection nozzle device for an internal combustion engine, characterized in that d 1 ≧ d 2 and d 1 <Z<5d 1 .
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18381787U JPH0188027U (en) | 1987-12-03 | 1987-12-03 | |
| DE8888903356T DE3872637T2 (en) | 1987-04-07 | 1988-04-07 | COMBUSTION ENGINE. |
| EP88903356A EP0309590B1 (en) | 1987-04-07 | 1988-04-07 | Internal combustion engine |
| US07/340,724 US4919093A (en) | 1987-04-07 | 1988-04-07 | Internal combustion engine |
| PCT/JP1988/000350 WO1988008081A1 (en) | 1987-04-07 | 1988-04-07 | Internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18381787U JPH0188027U (en) | 1987-12-03 | 1987-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0188027U true JPH0188027U (en) | 1989-06-09 |
Family
ID=31475223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18381787U Pending JPH0188027U (en) | 1987-04-07 | 1987-12-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0188027U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054908A (en) * | 1998-05-22 | 2000-02-22 | Waertsilae Nsd Schweiz Ag | Cylinder cover and arrangement structure of cylinder cover in toe stroke diesel engine |
| WO2000020735A1 (en) * | 1997-04-11 | 2000-04-13 | Yanmar Diesel Engine Co., Ltd. | Combustion system for direct injection diesel engines |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59173554A (en) * | 1983-03-22 | 1984-10-01 | Kawasaki Heavy Ind Ltd | Fuel injection valve |
-
1987
- 1987-12-03 JP JP18381787U patent/JPH0188027U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59173554A (en) * | 1983-03-22 | 1984-10-01 | Kawasaki Heavy Ind Ltd | Fuel injection valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000020735A1 (en) * | 1997-04-11 | 2000-04-13 | Yanmar Diesel Engine Co., Ltd. | Combustion system for direct injection diesel engines |
| JP2000054908A (en) * | 1998-05-22 | 2000-02-22 | Waertsilae Nsd Schweiz Ag | Cylinder cover and arrangement structure of cylinder cover in toe stroke diesel engine |