JPS63186927U

JPS63186927U -

Info

Publication number: JPS63186927U
Application number: JP7685087U
Authority: JP
Priority date: 1987-05-22
Filing date: 1987-05-22
Publication date: 1988-11-30

Description

[Brief explanation of drawings]

第１図Ａは本考案の一実施例の要部縦断面図、
第１図Ｂは同図Ａ―Ａ線に沿う平面図である。第
２図Ａは本考案の一実施例の要部縦断面図、第２
図Ｂは同図Ａ―Ａ線に沿う平面図である。第３図
Ａは従来例の要部縦断面図、第３図Ｂは同図Ａ―
Ａ線に沿う平面図である。１……シリンダブロツク、２……シリンダヘツ
ド、３……ピストン、４……主燃焼室、５……渦
流室、６……噴口、７……燃料噴射ノズル、９…
…ホツトプラグ、１０……凹部、１０ａ……前縁
部、１０ｂ……後縁部、１０ｃ……側縁部、１０
ｄ……底面。 FIG. 1A is a vertical cross-sectional view of a main part of an embodiment of the present invention;
FIG. 1B is a plan view taken along line AA in the figure. FIG. 2A is a longitudinal cross-sectional view of a main part of an embodiment of the present invention;
Figure B is a plan view taken along line AA in the figure. Figure 3A is a vertical sectional view of the main part of the conventional example, and Figure 3B is the same figure A.
It is a top view along the A line. DESCRIPTION OF SYMBOLS 1... Cylinder block, 2... Cylinder head, 3... Piston, 4... Main combustion chamber, 5... Swirl chamber, 6... Nozzle port, 7... Fuel injection nozzle, 9...
...hot plug, 10... recess, 10a... front edge, 10b... rear edge, 10c... side edge, 10
d...Bottom surface.

Claims

[Scope of utility model registration request]

In a sub-chamber type diesel engine in which a nozzle from the sub-chamber is opened near the edge of the main combustion chamber, a recess that extends to both sides from the opening of the nozzle is formed on the wall surface on the cylinder head side that defines the main combustion chamber. A pre-chamber type diesel engine is characterized in that the depth of this recess is increased toward the outer circumference of the cylinder.