JPS59107948U

JPS59107948U - piston

Info

Publication number: JPS59107948U
Application number: JP134083U
Authority: JP
Inventors: 森下　克介; 武居　攻
Original assignee: 三菱重工業株式会社
Priority date: 1983-01-11
Filing date: 1983-01-11
Publication date: 1984-07-20

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

[Brief explanation of the drawing]

第１図ａは従来の内燃機関のピストンを示す側面図、第
１図すは第１図ａのＡ矢視図、第２図、第３図、第４図
、第５図、第６図、第７図はそれぞれ従来のリングラン
ド部を示す断面図、第８図は本考案による第１実施例の
ピストン側面の展開図、第９図は第８図のＩ−Ｉ矢視断
面図、第１０図は第８図の■−■矢視断面図、第１１図
は第８図の■−■矢視断面図、第１２図は本考案による
第２実施例のピストン側面の展開図、第１３図は第１２
図のＩ−Ｉ矢視断面図、第１４図は第１２図の■−■矢
視断面図、第１５図は第１２図の■−■矢視断面図であ
る。１・・・トップランド、２・・・セカンドリングランド
、３・・・サードリングランド、４・・・スカート、５
・・・ピストンピン孔、２０・・・ピストンピン軸心線
。。Fig. 1a is a side view showing a piston of a conventional internal combustion engine, Fig. 1 is a view taken in the direction of arrow A in Fig. 1a, Figs. , FIG. 7 is a cross-sectional view showing the conventional ring land portion, FIG. 8 is a developed view of the side surface of the piston of the first embodiment of the present invention, and FIG. 9 is a cross-sectional view taken along the line I-I in FIG. 8. FIG. 10 is a sectional view taken along the line ■-■ in FIG. 8, FIG. 11 is a sectional view taken along the line ■-■ in FIG. Figure 13 is the 12th
14 is a cross-sectional view taken along the line II--■ in FIG. 12, and FIG. 15 is a cross-sectional view taken along the line ■--■ in FIG. 12. 1...Top land, 2...Second ring land, 3...Third ring land, 4...Skirt, 5
...Piston pin hole, 20...Piston pin axis center line. .

Claims

[Scope of utility model registration request]

A piston characterized in that a ring land portion of the piston is formed to have a different cross-sectional shape in the axial direction of the piston pin and in the direction perpendicular to the coaxial center line.