JPH0411214U - - Google Patents

Description

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

第１図は本考案による副室式内燃機関の燃焼室
の副燃焼室中心線を含む縦断面図、第２図は第１
図のＢ−Ｂ断面図、第３図は第１図の副室口金部
分の拡大図、第４図ａ〜ｆは本考案の他の実施例
を示す第２図図と同様な断面図、第５図は従来装
置における副燃焼室中心線を含む縦断面図、第６
図は第５図のＢ−Ｂ断面図、第７図は第５図の副
室口金部分の拡大図、第８図ａ〜ｄは他の従来装
置における第６図と同様な断面図である。 １……主燃焼室、２……副燃焼室、５……燃料
弁、６……ピストン、７……シリンダ、８……副
室口金、３１，３３，３５……副室噴口（３５…
副室直下噴口）。 Fig. 1 is a longitudinal sectional view including the center line of the auxiliary combustion chamber of the combustion chamber of the auxiliary chamber type internal combustion engine according to the present invention;
3 is an enlarged view of the auxiliary chamber cap portion of FIG. 1, FIGS. 4 a to 4 are sectional views similar to FIG. 2 showing other embodiments of the present invention, Figure 5 is a vertical cross-sectional view including the center line of the auxiliary combustion chamber in the conventional device;
The figure is a sectional view taken along line BB in FIG. 5, FIG. 7 is an enlarged view of the sub-chamber mouth portion in FIG. 5, and FIGS. 8 a to 8 d are sectional views similar to FIG. 6 in other conventional devices. . 1... Main combustion chamber, 2... Sub-combustion chamber, 5... Fuel valve, 6... Piston, 7... Cylinder, 8... Sub-chamber mouthpiece, 31, 33, 35... Sub-chamber nozzle (35...
spout directly below the subchamber).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 副燃焼室の位置がシリンダ中心線に対して偏心
し、かつ、主燃焼室と副燃焼室とを連通する３個
以上の副室噴口を有する副室式内燃機関の燃焼室
において、上死点時におけるピストン頂面とシリ
ンダ中心線が交る点をピストン中心Ｏ_ｓ点とし、
ピストン中心Ｏ_ｓ点と副燃焼室中心線を含む平面
をＣ−Ｃ平面、副燃焼室中心線を含みＣ−Ｃ平面
に直角な平面をＤ−Ｄ平面とした時に、Ｄ−Ｄ平
面に対して、ピストン中心Ｏ_ｓ側に設けた副室噴
口の通路面積を、Ｄ−Ｄ平面上あるいはピストン
中心から離れた側に設けた副室噴口の通路面積よ
り大きくするとともに、副室直下噴口をＤ−Ｄ平
面に対してピストン中心から離れた側に設けたこ
とを特徴とする副室式内燃機関の燃焼室。 In the combustion chamber of an auxiliary chamber type internal combustion engine, the auxiliary combustion chamber is eccentric with respect to the cylinder center line and has three or more auxiliary chamber nozzles that communicate the main combustion chamber and the auxiliary combustion chamber. The point where the piston top surface and the cylinder center line intersect at the time is the piston center _Os point,
When the plane including the piston center _Os point and the sub-combustion chamber center line is the C-C plane, and the plane including the sub-combustion chamber center line and perpendicular to the C-C plane is the D-D plane, with respect to the D-D plane. Therefore, the passage area of the sub-chamber nozzle provided on the piston center _Os side is made larger than the passage area of the sub-chamber nozzle provided on the D-D plane or on the side away from the piston center, and the nozzle directly below the sub-chamber is - A combustion chamber of a pre-chamber type internal combustion engine, characterized in that the combustion chamber is provided on a side remote from a piston center with respect to a D plane.