JPS58140419A - Scavenging device for 2-cycle engine - Google Patents

Scavenging device for 2-cycle engine

Info

Publication number
JPS58140419A
JPS58140419A JP2424582A JP2424582A JPS58140419A JP S58140419 A JPS58140419 A JP S58140419A JP 2424582 A JP2424582 A JP 2424582A JP 2424582 A JP2424582 A JP 2424582A JP S58140419 A JPS58140419 A JP S58140419A
Authority
JP
Japan
Prior art keywords
scavenging
piston
cylinder
scavenging port
airtightness
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
JP2424582A
Other languages
Japanese (ja)
Inventor
Mitsunobu Nakatani
光伸 中谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2424582A priority Critical patent/JPS58140419A/en
Publication of JPS58140419A publication Critical patent/JPS58140419A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Abstract

PURPOSE:To perform a reliable firing in a manner to maintain a fuel-air mixture at an ignition plug part, by a method wherein a seal part, being capable of sliding in a manner to hold an airtightness between a scavenging port, formed in a head part of a piston, and a cylinder, and a heat-resisting rubber seal are located at the inside. CONSTITUTION:A seal part 7, being capable of sliding in a manner to maintain an airtightness between a scavenging port 3, formed in head part 2 of a piston 1, and a cylinder 4 is located. At air feed path is constituted through the formation of the scavenging port 3 and a concavity 5 in the inner periphery of the cylinder. With the piston 1 raised, the scavenging port 3 and the concavity 5 are closed, and an exhaust port 11 is also closed to bring it into a compression stroke a scavenging flow is compressed, and a fuel-air mixture is held at an ignition plug part. This allows the reliable firing.

Description

【発明の詳細な説明】 一般にりうシフケース２サ１９ル機関は低負荷運転時に
おける燃焼室内の掃気が悪く不整爆発の原因になってい
る。これは掃気流が燃焼室に達成していない為に生じて
いるもので本発明は掃気圧力の低い２サイクル機関の欠
点を解消することを目的とするものである。次に内面に
より本発明の実施例について説明すると、じストシＬの
頭部ａに掃気ホード）、を設ける。掃気ポート）、の外
周面上シリジター４．０内周面の気密を保つように、シ
ール片を設は内部にｊムシールで形成する。DETAILED DESCRIPTION OF THE INVENTION In general, in a two-sample engine with a two-wheel shift case, the scavenging inside the combustion chamber is poor during low-load operation, causing irregular explosions. This occurs because the scavenging air flow has not reached the combustion chamber, and the purpose of the present invention is to eliminate the drawback of the two-stroke engine, which has a low scavenging pressure. Next, to explain an embodiment of the present invention from the inside, a scavenging hoard is provided on the head a of the stator L. A seal piece is provided inside the syringe to maintain airtightness on the outer circumferential surface of the syringe (4.0) and on the inner circumferential surface of the scavenging port.

掃気ポート５．とシリジター内周面に凹部５を設けて燃
焼室８．に掃気流９．が連通する給気路を構成する。Scavenging port 5. A recess 5 is provided on the inner peripheral surface of the syringe to form a combustion chamber 8. 9. Scavenging air flow. constitute an air supply path that communicates with the

次に本発明の作用について説明すると、りうシフ室の混
合気はピストンＬが下降するに従って圧力は上昇し掃気
流１０．はピストンポート５．力・ら強力にシリシダー
凹部な通り燃焼室８．に噴入することが容易である。さ
らにクラシフ軸が回転しピストンＬが上昇すると、掃気
ポートさ、は凹部５．を閉と排気ボート１１も閉じて圧
縮行程となり、掃気流は圧縮され点火栓部分には混合気
が維持され確実に着火が行われることで本発明の目的を
達成することが出来るニサイクル機関の掃気装置。Next, the operation of the present invention will be explained. As the piston L descends, the pressure of the air-fuel mixture in the rear shift chamber increases, and the scavenging air flow 10. is piston port 5. 8. The combustion chamber is strongly connected to the cylindrical recess. Easy to inject. When the classif shaft further rotates and the piston L rises, the scavenging port opens into the recess 5. When the engine is closed, the exhaust boat 11 is also closed, resulting in a compression stroke, and the scavenging air flow is compressed, and the air-fuel mixture is maintained at the ignition plug part, ensuring ignition, thereby achieving the purpose of the present invention. Device.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明の一実施例の断面図である。 Ｌはピストン　ａは頭部　５．は掃気ポート４、はシリ
ジター　５．はシリク〈−凹部＆は点火栓　７．はシー
ル片と’Ｊ　ムシ−７１゜＆は燃焼室　９．　Ｉ　Ｏ，
は掃気流　１１は排気１２、は排気ポートThe figure is a sectional view of one embodiment of the present invention. L is the piston a is the head 5. is scavenging port 4, is syringe 5. 〈-recess & ignition plug 7. 9. is the seal piece and 'J Mushi-71゜& is the combustion chamber. I O,
is scavenging air flow 11 is exhaust 12, is exhaust port

Claims (1)

【特許請求の範囲】[Claims] ２サイクル機関のピストン頭部乙に、掃気ボートさ、を
設ける。掃気ホートラ、とシリクづ一内周面の凹部５．
が合致した時期にピストン上内部の混合気がボートう、
を通り燃焼室に噴射することが出来る掃気装置。ピスト
ン頭部乙に設けた掃気ポートう、とシリジター５１間に
気密を保ち乍ら情動出来るシール部７．と内部に耐熱ｊ
ムシールを設けてなる２サイクル機関の掃気装置。A scavenging boat is installed at the piston head of a two-stroke engine. 5. Concave part on the inner circumferential surface of the scavenging hole and the cylinder.
The air-fuel mixture inside the piston will flow when the
A scavenging device that can inject air into the combustion chamber through the 7. A seal portion that allows airtightness while maintaining airtightness between the scavenging port provided on the piston head B and the syringe 51. and heat resistant inside
A scavenging device for a two-stroke engine equipped with a mushir.
JP2424582A 1982-02-16 1982-02-16 Scavenging device for 2-cycle engine Pending JPS58140419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2424582A JPS58140419A (en) 1982-02-16 1982-02-16 Scavenging device for 2-cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2424582A JPS58140419A (en) 1982-02-16 1982-02-16 Scavenging device for 2-cycle engine

Publications (1)

Publication Number Publication Date
JPS58140419A true JPS58140419A (en) 1983-08-20

Family

ID=12132860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2424582A Pending JPS58140419A (en) 1982-02-16 1982-02-16 Scavenging device for 2-cycle engine

Country Status (1)

Country Link
JP (1) JPS58140419A (en)

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