JPH0276126U - - Google Patents
Info
- Publication number
- JPH0276126U JPH0276126U JP15587488U JP15587488U JPH0276126U JP H0276126 U JPH0276126 U JP H0276126U JP 15587488 U JP15587488 U JP 15587488U JP 15587488 U JP15587488 U JP 15587488U JP H0276126 U JPH0276126 U JP H0276126U
- Authority
- JP
- Japan
- Prior art keywords
- scavenging
- port
- cylinder
- passage
- exhaust
- 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
Links
- 230000002000 scavenging effect Effects 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Supercharger (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第1図は本考案の実施例にかかる多気筒2サイ
クルエンジンの1例を示す縦断側面図、第2図は
横断平面図である。
1…シリンダブロツク、2…シリンダヘツド、
3…シリンダ、4…ピストン、6a…主掃気ポー
ト、6b…副掃気ポート、6c…第3掃気ポート
、7…排気ポート、8…掃気チヤンバ、9a,9
b,9c…助走通路、10…掃気通路、11…掃
気ポンプ、12…排気通路、13…排気ポートラ
イナ。
FIG. 1 is a longitudinal side view showing an example of a multi-cylinder two-stroke engine according to an embodiment of the present invention, and FIG. 2 is a cross-sectional plan view. 1...Cylinder block, 2...Cylinder head,
3... Cylinder, 4... Piston, 6a... Main scavenging port, 6b... Sub-scavenging port, 6c... Third scavenging port, 7... Exhaust port, 8... Scavenging chamber, 9a, 9
b, 9c... Run-up passage, 10... Scavenging passage, 11... Scavenging pump, 12... Exhaust passage, 13... Exhaust port liner.
Claims (1)
される掃気ポート、排気ポートを有し、上記掃気
ポートおよび排気ポートは、シリンダの左右対称
中心線を挾んで相対向する部位に一対の主副掃気
ポートと、その中間位置に向き合つて一側に第3
の掃気ポート、他側に排気ポートとが開口配置さ
れた反転掃気式に形成され、且つ上記掃気ポート
に連通する通路に掃気ポンプを具備してなる多気
筒2サイクルエンジンにおいて、 上記反転掃気式に開口配置される各シリンダ壁
の複数の掃気ポートおよび排気ポートを、並列す
る相隣るシリンダ相互間において、そのクランク
軸方向に対し斜めに所要角度傾むけた左右対称中
心線を基準として開口配置すると共に、 また上記相隣る各シリンダ壁回りには連通路で
互いに連通させた掃気チヤンバを形成して該チヤ
ンバに前記掃気ポンプを具備した掃気通路を接続
すると共に、その掃気チヤンバと上記複数の各掃
気ポートとを助走通路を介して連通させ、 且つ排気ポートを開口したシリンダブロツク内
の排気通路にポートライナを内装して該排気通路
を断熱構造としてなることを特徴とする掃気ポン
プを備えた多気筒2サイクルエンジン。[Scope of Claim for Utility Model Registration] The cylinder peripheral wall has a scavenging port and an exhaust port that are opened and closed by the rise and fall of the piston, and the scavenging port and exhaust port are located at opposite locations across the symmetrical center line of the cylinder. A pair of main and sub-scavenging ports, and a third one on one side facing the middle position.
In a multi-cylinder two-stroke engine formed in an inverted scavenging type in which a scavenging port is open and an exhaust port is open on the other side, and a scavenging pump is provided in a passage communicating with the scavenging port, the inverted scavenging type is A plurality of scavenging ports and exhaust ports of each cylinder wall that are arranged in an open manner are arranged in an open manner between adjacent cylinders in parallel, with reference to a center line of left-right symmetry that is inclined at a required angle with respect to the direction of the crankshaft. Also, a scavenging chamber is formed around each of the adjacent cylinder walls and communicated with each other through a communication passage, and a scavenging passage equipped with the scavenging pump is connected to the chamber, and the scavenging chamber and each of the plurality of A multi-purpose scavenging pump equipped with a scavenging pump, which communicates with a scavenging port via an approach passage, and has a port liner installed in an exhaust passage in a cylinder block with an open exhaust port, thereby making the exhaust passage an insulating structure. 2 cylinder cylinder engine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15587488U JPH0276126U (en) | 1988-11-29 | 1988-11-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15587488U JPH0276126U (en) | 1988-11-29 | 1988-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0276126U true JPH0276126U (en) | 1990-06-11 |
Family
ID=31433891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15587488U Pending JPH0276126U (en) | 1988-11-29 | 1988-11-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0276126U (en) |
-
1988
- 1988-11-29 JP JP15587488U patent/JPH0276126U/ja active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5054537A (en) | Lost foam pattern assembly for V-block engine | |
JPS6052367U (en) | Exhaust system of 3-cylinder 2-stroke engine | |
JPH0276126U (en) | ||
JPH0327809U (en) | ||
JPS6323555Y2 (en) | ||
JPH0263052U (en) | ||
JP2694661B2 (en) | 4 cycle engine | |
JPS63171644U (en) | ||
JP2737083B2 (en) | 4 cycle engine | |
JPS6220149U (en) | ||
JP2654591B2 (en) | 4-cycle multi-cylinder engine | |
JPS6176139U (en) | ||
JPH01102453U (en) | ||
JPS61173727U (en) | ||
JPS5917222U (en) | Engine combustion chamber structure | |
JPS62143050U (en) | ||
JPS6447931U (en) | ||
JPS62116146U (en) | ||
JPH024940U (en) | ||
JPH0267051U (en) | ||
JPS61105724U (en) | ||
JPS61169236U (en) | ||
JPS63147516U (en) | ||
JPH0354244U (en) | ||
JPS63121747U (en) |