JPS58183933U

JPS58183933U - Diesel engine combustion chamber

Info

Publication number: JPS58183933U
Application number: JP8166082U
Authority: JP
Inventors: 坪田　利光
Original assignee: 三菱重工業株式会社
Priority date: 1982-06-03
Filing date: 1982-06-03
Publication date: 1983-12-07

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のトロイダル型燃焼室を設けたピストンを
示す断面図、第２図は同じくオープンチャンバ型燃焼室
を設けたピストンを示す断面図、第３図は本考案による
１実施例の燃焼室と同燃焼室への噴霧状態とを示す説明
図、第４図は第３図の燃焼室の形状を示す説明図、第５
図は第３図の境界部の形状を拡大して示す説明図である
。２１・・・トロイダル型燃焼室、２２・・・オープンチ
ャンバ型燃焼室、１００・・・ピストン、１０５・・・
円錐状面、Ａ・・・境界部。Fig. 1 is a sectional view showing a piston equipped with a conventional toroidal combustion chamber, Fig. 2 is a sectional view showing a piston also provided with an open chamber combustion chamber, and Fig. 3 is a sectional view showing an example of combustion according to the present invention. FIG. 4 is an explanatory diagram showing the shape of the combustion chamber in FIG. 3, and FIG.
The figure is an explanatory diagram showing an enlarged view of the shape of the boundary part in FIG. 3. 21... Toroidal type combustion chamber, 22... Open chamber type combustion chamber, 100... Piston, 105...
Conical surface, A...boundary part.

Claims

【実用新案登録請求の範囲】ピストン頂部の中央部のトロイダル型燃焼室と同トロイ
ダル型燃焼室を囲むオープンチャンバ型燃焼室とにてな
る燃焼室を形成し勺直接噴射式ディーゼル機関において
、上記トロイダル型燃焼室の周面上端部と上記オープン
チャンバ型燃焼室の、内周端部との境界部とピストン頂
面の中心とを結ぶ円錐状面にて上記燃焼室を分割し分割
された各燃焼室の容積をほげ等しくすると共に、上記境
界部のピストン頂面から距離Ｉと上記トロイダル型燃焼
室の直径り。との関係をＤｏ／２−３．５〜５．０としたことを特徴とするディーゼル機関の燃焼室。[Scope of Claim for Utility Model Registration] In a direct injection type diesel engine in which a combustion chamber is formed of a toroidal combustion chamber in the center of the top of the piston and an open chamber combustion chamber surrounding the toroidal combustion chamber, The combustion chamber is divided by a conical surface that connects the boundary between the upper end of the peripheral surface of the open chamber type combustion chamber and the inner peripheral end of the open chamber type combustion chamber and the center of the top surface of the piston. The volumes of the chambers are made equal, and the distance I from the top surface of the piston at the boundary part is equal to the diameter of the toroidal combustion chamber. A combustion chamber for a diesel engine, characterized in that the relationship between Do/2-3.5 and Do/2-3.5 to 5.0.