JPS5851025U - 2 cycle engine - Google Patents

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図は本考案になる２気筒２サイクルエンジンの構造
を示す径断面構造図、第２図は同エンジンの掃気口、排
気口の断面形状の詳細を示す横断面図である。 １・・・・・・第１シリンダー、２・・・・・・第２シ
リンダー、３・・・・・・燃焼室、４・・・・・・点火
栓、５・・・・・・第１ピストン１．６・・・・・・第
２ピストン　７　、　８６６＠ｌｌｌ１１＋クランクシ
ヤ゛フト、９・・・・・・第１クランクケース、１０・
・間第２クランクケース、１１・・・・・・吸気口、１
２・・・・・・排気口、１３・・・・・・掃気通路、１
４・・・・・・掃気口。FIG. 1 is a radial cross-sectional view showing the structure of a two-cylinder two-stroke engine according to the present invention, and FIG. 2 is a cross-sectional view showing details of the cross-sectional shapes of the scavenging port and exhaust port of the engine. 1...First cylinder, 2...Second cylinder, 3...Combustion chamber, 4...Ignition plug, 5...First cylinder 1 piston 1.6...2nd piston 7, 866@llll11+crankshaft, 9...1st crankcase, 10.
・Interval 2nd crankcase, 11...Intake port, 1
2...Exhaust port, 13...Scavenging passage, 1
4...Scavenging port.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 直列２　気筒型の２サイクルエンジンにおいてピストン
５，６は同時に上昇・下降する同時往復型とし、且つシ
リンダー１．２の頂部は互に連通春せて１個の燃焼室３
となし、その頂上適宜の位置には１個又は２個からなる
点火栓４を設け、更に各シリンダー１，２の下部に設け
たクランクケース９．１０も燃焼室３同様の連通構造と
なし、第１シリンダー１の下部にははＳ゛第１シリンダ
ー１の円周全体に開口部を配設した排気口１２を設け、
その延長は排気通路に通じ１．上記排気口１２の下部で
適宜の位置には排気口１２と構造同一の気化−器に連通
ずる吸気口１１を設け、第２シリンダー２の下部にはク
ランクケース１０の一部と第２シリンダー２を結ぶ複数
個の掃気通路１３を設け、掃気通路１３の先端は第２シ
リンダー２の下部で適宜の位置にその円周全体に開口す
る適宜形状の掃気口１４を設けたことを特徴とする２サ
イクルエンジン。In an in-line two-cylinder type two-stroke engine, the pistons 5 and 6 are of a simultaneous reciprocating type that ascends and descends at the same time, and the tops of the cylinders 1.2 are connected with each other to form a single combustion chamber 3.
One or two spark plugs 4 are provided at appropriate positions on the top, and the crankcases 9 and 10 provided at the bottom of each cylinder 1 and 2 also have a communication structure similar to the combustion chamber 3, The lower part of the first cylinder 1 is provided with an exhaust port 12 having an opening around the entire circumference of the first cylinder 1.
Its extension leads to the exhaust passage 1. An intake port 11 that communicates with a carburetor having the same structure as the exhaust port 12 is provided at an appropriate position below the exhaust port 12, and a portion of the crankcase 10 and a portion of the second cylinder 2 are provided at the bottom of the second cylinder 2. A plurality of scavenging passages 13 are provided to connect the cylinders, and at the tip of the scavenging passage 13, a scavenging port 14 of an appropriate shape is provided at an appropriate position in the lower part of the second cylinder 2 and opens over the entire circumference. cycle engine.