JPS6141828U

JPS6141828U - Combustion chamber of internal combustion engine

Info

Publication number: JPS6141828U
Application number: JP11450785U
Authority: JP
Inventors: 洋中川; 又二立石
Original assignee: 三菱重工業株式会社; 三菱自動車工業株式会社
Priority date: 1985-07-27
Filing date: 1985-07-27
Publication date: 1986-03-17

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

【図面の簡単な説明】、第１図は従来の直接噴射式ディーゼル機関の燃−焼室
の構造を示す断面図、第２図は本考案による１実施例の
燃焼室形状を有するピストンの上面図、第３図は第２図
の■一■矢視断面図、第４図は第２図のＩＶ−ＩＶ矢視
断面図、第４ａ図は第２図の■一■矢視断面図、第４ｂ
図は第２図の■一■矢視断面図、第４ｃ図は第２図の■
−■矢視断面図、第．５図は本考案による他の実施例の
燃焼室形状を有するピストンの上面図、第６図は第５図
のＶＩ−ＶＩ矢視断面図、第７図は第５図の■一■矢視
断面図である。１・・・ピストン、７・・・燃料噴霧の噴射方向、２０
・・・燃焼室。[Brief Description of the Drawings] Fig. 1 is a sectional view showing the structure of a combustion chamber of a conventional direct injection diesel engine, and Fig. 2 is a top view of a piston having a combustion chamber shape according to an embodiment of the present invention. Figure 3 is a cross-sectional view taken along arrows 1--2 in Figure 2, Figure 4 is a cross-sectional view taken along IV-IV in Figure 2, and Figure 4a is a cross-sectional view taken along arrows 1-1 in Figure 2. 4th b
The figure is a sectional view taken in the direction of the ■1■ arrow in Figure 2, and Figure 4c is the ■■ in Figure 2.
−■ Cross-sectional view in the direction of arrows, No. 5 is a top view of a piston having a combustion chamber shape according to another embodiment of the present invention, FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5, and FIG. FIG. 1...Piston, 7...Injection direction of fuel spray, 20
...combustion chamber.

Claims

[Scope of utility model registration request]

In an internal combustion engine having a fuel valve, the shape of the opening of the combustion chamber formed in the piston to the top surface of the piston is a polygon having the same number of sides as the number of injection holes of the fuel valve, and the shape of the bottom of the combustion chamber is as described above. Each polygon is formed into a polygon that is almost the same as the polygon, and in a longitudinal section passing through the center of both polygons, the shape of the side wall surface is composed of smoothly continuous straight lines and curves, and each vertex of both polygons is 1. A combustion chamber for an internal combustion engine, characterized in that the combustion chamber is formed to be twisted around the piston axis from the top surface of the piston to the bottom strike so as to be offset in the circumferential direction of the piston when projected in the piston axis direction.