JPS60164649U

JPS60164649U - Piston for internal combustion engine

Info

Publication number: JPS60164649U
Application number: JP5154884U
Authority: JP
Inventors: スチーブン　ゲール　シヨウプ; ロバート　リー　ウエーバー
Original assignee: キヤタピラ−　トラクタ−　コンパニ−
Priority date: 1984-04-10
Filing date: 1984-04-10
Publication date: 1985-11-01

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 drawings]

第１図は一部を図示されている内燃機関内で往復自在な
ピストンの縦断面図、第２図は■−■線に沿って断面し
て矢印方向に見た第１図のピストンの底部の端面図、第
３図は■−■線に沿って断面して矢印方向に見た第２図
の一部分の断面による拡大図、第４図は代りとなる他の
実施例の第３図に類似した図である。１０・・・ピストン、１４・・・シリンダライナ、２２
・・・同項部分、２６・・・スカート部分、３０・・・
バンドインサート、３４・・・バンプインサートの上部
円周みぞ、３６・・・下部円周溝、３８・・・上部圧縮
シールリング、４０・・・下部圧縮シールリング、４２
・・・環状冷却室、４６・・・内部空洞、５０・・・ス
カート部分の内側側壁、５４・・・同項部分の底部外壁
、５８・・・　−。ノズルの第１のジェット流、６２・・・ノズル、６６・
・・ピストンピンホス、７０・・・ピストンピンボス、
７２・・・ボスの横穴、７４・・・ピストンピン、７８
・・・連接棒、８２・・・冷却液入口通路、８６・・・
ノズルの第２のジェット流、９０・・・冷却液出口通路
、９４・・・冷却液通路の食付き部、Ｄｌ・・・冷却液
通路の断面の小径、Ｄ２・・・冷却液通路の断面の長径
、Ｔ・・・冷却液通路の滑らかな渡り表面。Fig. 1 is a longitudinal cross-sectional view of a piston that can reciprocate in an internal combustion engine, a part of which is illustrated, and Fig. 2 is a bottom view of the piston shown in Fig. 1, taken in cross section along the line ■-■ and viewed in the direction of the arrow. FIG. 3 is an enlarged cross-sectional view of a portion of FIG. 2 taken along the line ■-■ and viewed in the direction of the arrow; FIG. 4 is an enlarged cross-sectional view of a portion of FIG. A similar diagram. 10... Piston, 14... Cylinder liner, 22
...Same section part, 26...Skirt part, 30...
Band insert, 34... Upper circumferential groove of bump insert, 36... Lower circumferential groove, 38... Upper compression seal ring, 40... Lower compression seal ring, 42
... Annular cooling chamber, 46 ... Internal cavity, 50 ... Inner side wall of the skirt portion, 54 ... Bottom outer wall of the same section, 58 ... -. Nozzle first jet flow, 62... Nozzle, 66.
... Piston pin boss, 70... Piston pin boss,
72...Boss side hole, 74...Piston pin, 78
...Connecting rod, 82...Cooling liquid inlet passage, 86...
Second jet flow of the nozzle, 90... Coolant outlet passage, 94... Chamfered portion of the coolant passage, Dl... Small diameter of the cross section of the coolant passage, D2... Cross section of the coolant passage Long diameter, T...Smooth crossing surface of coolant passage.

Claims

[Scope of utility model registration request]

A piston 10 for an internal combustion engine, comprising a horizontal annular cooling chamber 4
2 and the same part 22 disposed within the same part 22;
a pair of longitudinally extending bosses 66,70; a smoothly tapered frusto-conical coolant inlet passageway 82 extending longitudinally through one of said bosses 66;
a smoothly tapered frusto-conical cooler extending longitudinally through the other one of the bosses 70;
one end portion of each frustoconical coolant passage 82,90 is an annular cooling chamber 4;
2, and the other end portion of each coolant passage 82.90 has a small diameter D1 in cross section.
Piston 10 having a cross-sectional major axis D2 larger than 1
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