JPS5990072U

JPS5990072U - Injection nozzle for direct injection diesel engine

Info

Publication number: JPS5990072U
Application number: JP18596182U
Authority: JP
Inventors: 三枝　省五
Original assignee: 日産自動車株式会社
Priority date: 1982-12-10
Filing date: 1982-12-10
Publication date: 1984-06-18

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、従来のピストンの燃焼室を示す平面図、第２
図は第１図の■−■線断面図、第３図はこの考案の一実
施例を示すピストンの燃焼室の平面図、第４図は第３図
のＩＶ−ＩＶ線断面図、第５図は、他の実施例を示すピ
ストンの燃焼室の平面図、第６図は、第５図のＶＩ−Ｖ
Ｉ線断面図、第７図は更に他の実施例を示す断面図であ
る。１・・・・・・シリンダ、２・・・・・・ピストン、３
・・・・・・シリンダヘッド、４・・・・・・クリアラ
ンス燃焼室、５・・・・・・円錐状突起部、６・・・・
・・キャビティ燃焼室、７・・・・・・燃料噴射用ノズ
ル、９・・曲バルブリセス。Figure 1 is a plan view showing the combustion chamber of a conventional piston;
The figures are a cross-sectional view taken along the line ■-■ in FIG. The figure is a plan view of the combustion chamber of the piston showing another embodiment, and FIG. 6 is the VI-V of FIG.
A sectional view taken along line I and FIG. 7 are sectional views showing still another embodiment. 1...Cylinder, 2...Piston, 3
... Cylinder head, 4 ... Clearance combustion chamber, 5 ... Conical projection, 6 ...
...Cavity combustion chamber, 7...Fuel injection nozzle, 9...Curved valve recess.

Claims

[Scope of utility model registration request]

In a direct injection diesel engine, in which fuel is directly injected into a cavity combustion chamber at the top of the piston from a fuel injection nozzle placed above the cylinder, and a valve recess is provided on the top surface of the piston, the fuel injection direction is directed into the cavity combustion chamber. An injection nozzle for a direct injection type diesel engine, characterized in that the injection hole position is set so that the injection hole is close to the opening of the combustion chamber and the fuel spray does not directly flow into the clearance combustion chamber.