JPH0389933U

JPH0389933U -

Info

Publication number: JPH0389933U
Application number: JP15006989U
Authority: JP
Priority date: 1989-12-28
Filing date: 1989-12-28
Publication date: 1991-09-12

Description

[Brief explanation of drawings]

第１〜２図は本考案に係るもので、第１図は第
１実施例の説明図、第２図は第２実施例の説明図
、第３〜５図は従来例に係るもので、第３図は予
燃焼室式の断面図、第４図は渦流室式の断面図、
第５図は直接噴射式の断面図である。１……ピストン、２……シリンダヘツド、３…
…燃料噴射弁、４……シリンダライナ、ａ……チ
ヤンバ、ｂ……溝、ｃ……キヤビテイ。 1 to 2 are related to the present invention, FIG. 1 is an explanatory diagram of the first embodiment, FIG. 2 is an explanatory diagram of the second embodiment, and FIGS. 3 to 5 are related to the conventional example. Figure 3 is a sectional view of the pre-combustion chamber type, Figure 4 is a sectional view of the swirl chamber type,
FIG. 5 is a sectional view of the direct injection type. 1...Piston, 2...Cylinder head, 3...
...Fuel injection valve, 4...Cylinder liner, a...Chamber, b...Groove, c...Cavity.

Claims

[Claims for Utility Model Registration] (1) It is provided in the cylinder head and has a cylindrical shape with a constricted lower part and a bank-like rim that protrudes into the combustion chamber. A diesel engine comprising: a chamber provided with a plurality of grooves serving as holes; a fuel injection valve provided above the chamber; and a piston cavity recessed in the direction of the center line of each of the grooves. combustion chamber. (2) A chamber that is embedded in the piston head and is formed into a constricted top and has multiple grooves that serve as nozzle holes during fuel injection on the bank-like upper end surface that protrudes into the combustion chamber. A combustion chamber for a diesel engine, comprising: a fuel injection valve provided above the chamber; and a piston cavity recessed in the direction of the center line of each of the grooves.