JPS63140135U

JPS63140135U -

Info

Publication number: JPS63140135U
Application number: JP3373087U
Authority: JP
Priority date: 1987-03-06
Filing date: 1987-03-06
Publication date: 1988-09-14

Description

[Brief explanation of the drawing]

第１図は本考案一実施例の部分軸断面図、第２
図は実施例の凹状室形状を示す平面図、第３図お
よび第４図は本考案の他の実施例の平面図である
。１，１ａ，１ｂ……凹状室、２……直線、３，
１５……交角部、４，４ａ，１３，１４……乱流
、５……シリンダヘツド、６……噴射ノズル、７
……ピストン、８……燃焼室、９……キヤビテイ
、１０，１１，１２……コーナ部。 Fig. 1 is a partial axial sectional view of one embodiment of the present invention;
The figure is a plan view showing the concave chamber shape of the embodiment, and FIGS. 3 and 4 are plan views of other embodiments of the present invention. 1, 1a, 1b...concave chamber, 2...straight line, 3,
15... Intersection, 4, 4a, 13, 14... Turbulent flow, 5... Cylinder head, 6... Injection nozzle, 7
... Piston, 8 ... Combustion chamber, 9 ... Cavity, 10, 11, 12 ... Corner section.

Claims

[Scope of utility model registration request]

In a combustion chamber of a direct injection diesel engine, a combustion chamber having a cavity at the top of the piston is formed to generate a swirl, and fuel is injected into the combustion chamber from an injection nozzle provided on the cylinder head side. The head has a diagonal width at least not larger than the diameter or diagonal width of the combustion chamber at a position facing the combustion chamber,
A combustion chamber for a direct injection diesel engine, characterized in that it forms a concave chamber having a polygonal or uneven corrugated periphery and having a smaller volume than the combustion chamber.