JPH0457651U

JPH0457651U -

Info

Publication number: JPH0457651U
Application number: JP9884290U
Authority: JP
Priority date: 1990-09-20
Filing date: 1990-09-20
Publication date: 1992-05-18

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図は一実施例が適用される２サイクル直噴エンジ
ンの概略構成断面図、第３図は本考案の従来例を
示す断面図、第４図は同、底面図である。１……エンジン本体、２……シリンダ、３……
ピストン、３ａ……頭部、３ｂ……スカート部、
３ｃ，３ｄ，３ｆ……リング溝、３ｅ……ピスト
ン本体、３ｇ……リングボス、３ｈ……嵌合部、
３ｉ……嵌合部、４……クランクケース、５……
クランク軸、６……コネクテイングロツド、７…
…バランサ、８……オイルパン、９……燃焼室、
１０……点火プラグ、１１……インジエクタ、１
２……排気ポート、１３……排気ロータリバルブ
、１４……ベルト伝動手段、１５……排気管、１
６……排気チヤンバ、１７……マフラ、１８……
掃気ポート、１９……掃気管、２０……掃気チヤ
ンバ、２１……インタークーラ、２２……掃気ポ
ンプ、２３……ベルト伝動手段、２４……吸入管
、２５……エアクリーナ、２６……バイパス通路
、２７……アクセルペダル、２８……制御弁、２
９……コンプレツシヨンリング、３０……オイル
リング、３１……オイルリング、３２……エアフ
ローメータ。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a schematic sectional view of a two-stroke direct injection engine to which an embodiment is applied, FIG. 3 is a sectional view showing a conventional example of the present invention, and FIG. 4 is a bottom view of the same. 1...Engine body, 2...Cylinder, 3...
Piston, 3a...head, 3b...skirt part,
3c, 3d, 3f...Ring groove, 3e...Piston body, 3g...Ring boss, 3h...Fitting part,
3i...Mating part, 4...Crankcase, 5...
Crankshaft, 6... Connecting rod, 7...
... Balancer, 8 ... Oil pan, 9 ... Combustion chamber,
10...Spark plug, 11...Injector, 1
2...Exhaust port, 13...Exhaust rotary valve, 14...Belt transmission means, 15...Exhaust pipe, 1
6...exhaust chamber, 17...muffler, 18...
Scavenging port, 19... scavenging pipe, 20... scavenging chamber, 21... intercooler, 22... scavenging pump, 23... belt transmission means, 24... suction pipe, 25... air cleaner, 26... bypass passage , 27...Accelerator pedal, 28...Control valve, 2
9...compression ring, 30...oil ring, 31...oil ring, 32...air flow meter.

Claims

[Scope of Claim for Utility Model Registration] A piston ring is attached to the piston head, and the piston main body, in which the inner periphery of the piston skirt part is cut out, is continuously fitted and fixed to the end of the piston skirt part. A piston for an automobile engine, comprising a ring boss, and a piston ring for preventing leakage is attached to the ring boss.