JPS5949723U - 2-stroke internal combustion engine - Google Patents

2-stroke internal combustion engine

Info

Publication number
JPS5949723U
JPS5949723U JP14513282U JP14513282U JPS5949723U JP S5949723 U JPS5949723 U JP S5949723U JP 14513282 U JP14513282 U JP 14513282U JP 14513282 U JP14513282 U JP 14513282U JP S5949723 U JPS5949723 U JP S5949723U
Authority
JP
Japan
Prior art keywords
internal combustion
combustion engine
stroke internal
curvature
inner walls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14513282U
Other languages
Japanese (ja)
Inventor
和男 大山
靖彦 中野
Original Assignee
本田技研工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to JP14513282U priority Critical patent/JPS5949723U/en
Priority to US06/531,224 priority patent/US4671219A/en
Publication of JPS5949723U publication Critical patent/JPS5949723U/en
Pending legal-status Critical Current

Links

Landscapes

  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

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 drawings]

第１図および第２図は本考案を適用した２サイクル内燃
機関を示すもので、第１図は縦断正面図、第２図は第１
図のシリンダブロックのｎ−ｎ断面図、第３図は従来の
２サイクル内燃機関の第２図と同様なシリンダブロック
の断面図である。 １はシリンダブロック、４はシリンダ孔、１１は吸気ポ
ート、１２は排気ポート、１７．１８゜１９は掃気ポー
ト、１７ａ、１８ａ、１９ａは開口部、ｒｌ＋　ｒ２＋
　ｒ３は弧長、１１，１゜、１３は弦長、θ１．θ２゜
θ３は中心角である。Figures 1 and 2 show a two-stroke internal combustion engine to which the present invention is applied.
FIG. 3 is a sectional view of the cylinder block similar to FIG. 2 of a conventional two-stroke internal combustion engine. 1 is the cylinder block, 4 is the cylinder hole, 11 is the intake port, 12 is the exhaust port, 17.18° 19 is the scavenging port, 17a, 18a, 19a are the openings, rl+ r2+
r3 is the arc length, 11.1°, 13 is the chord length, θ1. θ2° θ3 are central angles.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] シリンダブロックに形成されるシリンダ孔の横断面形状
を小判形、もしくは長軸と短軸の比が大きい楕円形状に
形成し、その横断面長軸方向の直線または曲率半径の大
きい両内壁の一方に吸気ポートを、その他方に排気ポー
トを、曲率半径の小さい両内壁に掃気ポートを開口して
なる２サイクル内燃機関において、前記掃気ポートを少
な（とも３対以上設け、掃気ポート開口部の総弦長を長
くしたことを特徴とする２サイクル内燃機関。The cross-sectional shape of the cylinder hole formed in the cylinder block is formed into an oval shape or an elliptical shape with a large ratio of the major axis to the minor axis, and the cross-sectional shape is a straight line in the major axis direction or one of the inner walls with a large radius of curvature. In a two-stroke internal combustion engine that has an intake port on one side, an exhaust port on the other side, and scavenging ports on both inner walls with a small radius of curvature, the scavenging ports are provided in a small number (three or more pairs in each case), and the total chord of the scavenging port openings is A two-stroke internal combustion engine characterized by a longer engine length.
JP14513282U 1982-09-11 1982-09-25 2-stroke internal combustion engine Pending JPS5949723U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP14513282U JPS5949723U (en) 1982-09-25 1982-09-25 2-stroke internal combustion engine
US06/531,224 US4671219A (en) 1982-09-11 1983-09-09 Two-stroke internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14513282U JPS5949723U (en) 1982-09-25 1982-09-25 2-stroke internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5949723U true JPS5949723U (en) 1984-04-02

Family

ID=30323443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14513282U Pending JPS5949723U (en) 1982-09-11 1982-09-25 2-stroke internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5949723U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5666428A (en) * 1979-10-31 1981-06-04 Honda Motor Co Ltd Two-cycle internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5666428A (en) * 1979-10-31 1981-06-04 Honda Motor Co Ltd Two-cycle internal combustion engine

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