JPS6254232U

JPS6254232U -

Info

Publication number: JPS6254232U
Application number: JP3977885U
Authority: JP
Priority date: 1985-03-22
Filing date: 1985-03-22
Publication date: 1987-04-03

Description

[Brief explanation of the drawing]

第１図イは本考案の第１実施例に係る直接噴射
式デイーゼルエンジンの燃焼室の透視平面図、第
１図ロ，ハ，ニは第１図イの導入溝の断面図、第
２図は第１図の装置の―線に沿う縦断面図、
第３図は本考案の第２実施例に係る直接噴射式デ
イーゼルエンジンの燃焼室の部分拡大断面図、第
４図イは本考案の第３実施例に係る直接噴射式デ
イーゼルエンジンの燃焼室の導入溝の拡大平面図
、第４図ロ，ハ，ニは第４図イの導入溝の断面図
、である。１……ピストン、３……スワールポートとして
の吸気ポート、５……ピストン燃焼室、６……導
入溝、６ｂ，６ｃ，６ｈ……稜線、９……リツプ
。 Figure 1A is a perspective plan view of the combustion chamber of a direct injection diesel engine according to the first embodiment of the present invention, Figure 1B, C and D are sectional views of the introduction groove in Figure 1A, and Figure 2 is a longitudinal cross-sectional view along the line - of the apparatus shown in Fig. 1;
3 is a partially enlarged sectional view of the combustion chamber of a direct injection diesel engine according to the second embodiment of the present invention, and FIG. 4A is a partial enlarged sectional view of the combustion chamber of the direct injection diesel engine according to the third embodiment of the present invention. FIG. 4B, C, and D are sectional views of the introduction groove in FIG. 4A. 1...Piston, 3...Intake port as swirl port, 5...Piston combustion chamber, 6...Introduction groove, 6b, 6c, 6h...Ridge line, 9...Rip.

補正昭６１．１０．２７図面の簡単な説明を次のように補正する。明細書第１３頁第４〜７行目に「第１図イは本
考案の第１実施例に係る直接噴射式デイーゼルエ
ンジンの燃焼室の透視平面図、第１図ロ，ハ，ニ
は第１図イの導入溝の断面図、」とあるのを、「
第１図は本考案の第１実施例に係る直接噴射式デ
イーゼルエンジンの燃焼室の透視平面図であり、
図におけるイは燃焼室の透視平面、ロ，ハ，ニは
ピストン頂面の導入溝を切断する仮想線および該
各仮想線に沿う導入溝の断面をそれぞれ示してい
る。」に補正する。明細書第１３頁第１２〜１６行目に「第４図イ
は本考案の第３実施例に係る直接噴射式デイーゼ
ルエンジンの燃焼室の導入溝の拡大平面図、第４
図ロ，ハ，ニは第４図イの導入溝の断面図、であ
る。」とあるのを、「第４図は本考案の第３実施
例に係る直接噴射式デイーゼルエンジンの燃焼室
の導入溝の拡大平面図であり、図におけるイは導
入溝の平面、ロ，ハ，ニは導入溝を切断する仮想
線および該各仮想線に沿う導入溝の断面をそれぞ
れ示している。」に補正する。Amendment October 27, 1981 The brief description of the drawing is amended as follows. On page 13 of the specification, lines 4 to 7, it says, ``Figure 1A is a perspective plan view of the combustion chamber of a direct injection diesel engine according to the first embodiment of the present invention, and Figures 1B, C, and D are ``Cross-sectional view of the introduction groove in Figure 1 A,'' is replaced with ``
FIG. 1 is a perspective plan view of a combustion chamber of a direct injection diesel engine according to a first embodiment of the present invention;
In the figure, A shows a perspective plane of the combustion chamber, B, C, and D show imaginary lines cutting the introduction groove on the top surface of the piston, and cross-sections of the introduction groove along each of the imaginary lines. ”. On page 13 of the specification, lines 12 to 16, it says, ``Figure 4A is an enlarged plan view of the introduction groove of the combustion chamber of a direct injection diesel engine according to the third embodiment of the present invention.
Figures B, C and D are cross-sectional views of the introduction groove in Figure 4A. "Figure 4 is an enlarged plan view of the introduction groove of the combustion chamber of a direct injection diesel engine according to the third embodiment of the present invention, and A in the figure indicates the plane of the introduction groove, B and H. , D indicate the imaginary line cutting the introduction groove and the cross section of the introduction groove along each of the imaginary lines.''

Claims

[Scope of utility model registration request]

In the combustion chamber of a direct injection diesel engine having a piston combustion chamber at the top of the piston, an introduction groove is provided at the top of the piston to guide intake air given a swirl from a swirl port to the piston combustion chamber, and the introduction groove A combustion chamber for a direct injection diesel engine, characterized in that a ridge line in the outer circumferential direction of the piston combustion chamber is tangent to the piston combustion chamber, and the other ridge line intersects with the circumference of the piston combustion chamber.