JPS6243136U

JPS6243136U -

Info

Publication number: JPS6243136U
Application number: JP13475185U
Authority: JP
Priority date: 1985-09-03
Filing date: 1985-09-03
Publication date: 1987-03-16

Description

[Brief explanation of the drawing]

第１図ないし第４図は本考案の一実施例に係る
２サイクルエンジンを示し、第１図はその平面断
面図、第２図は第１図中の―矢視断面図、第
３図は掃気通路を示す第１図中の―矢視図、
第４図は板状の壁部を示す第１図中の―矢視
断面図である。図面中、１……シリンダブロツク、４，４ａ…
…クランクケースおよびクランク室、７……クラ
ンクシヤフト、１１……燃焼室、１４，１８……
吸気ポートおよび逆止弁、１９……掃気通路、２
０……クランクケースの下壁面、２３……壁部、
である。 1 to 4 show a two-stroke engine according to an embodiment of the present invention, in which FIG. 1 is a plan sectional view thereof, FIG. 2 is a sectional view taken along the - arrow in FIG. 1, and FIG. -arrow view in Fig. 1 showing the scavenging passage;
FIG. 4 is a sectional view taken along the arrow - in FIG. 1, showing the plate-shaped wall portion. In the drawing, 1... cylinder block, 4, 4a...
...Crankcase and crank chamber, 7...Crankshaft, 11...Combustion chamber, 14, 18...
Intake port and check valve, 19...Scavenging passage, 2
0... Lower wall surface of the crankcase, 23... Wall part,
It is.

Claims

[Scope of utility model registration request]

An intake port is formed in the crankcase, which is fixed to the cylinder block and houses the crankshaft, at a position closer to the cylinder block than the axis of the crankshaft, and a check valve that opens and closes this intake port is located in the crankcase. In a two-stroke engine, in which the crank chamber of the crankcase and the combustion chamber are connected through a plurality of scavenging passages, the air-fuel mixture taken in from the intake port is transferred to the inner wall surface of the crankcase near the intake port. A two-stroke engine characterized by having a protruding plate-shaped wall portion that divides air into a side and a scavenging passage.