JPH0352338U

JPH0352338U -

Info

Publication number: JPH0352338U
Application number: JP11356089U
Authority: JP
Priority date: 1989-09-29
Filing date: 1989-09-29
Publication date: 1991-05-21

Description

[Brief explanation of drawings]

第１図は本考案を２サイクルデイーゼルエンジ
ンに適用した場合の実施例の側面断面図、第２図
は同上実施例のシリンダヘツド内壁の図、第３図
は新気ガイド壁の形状を示す略示図、第４図及び
第５図は給気弁開弁時の新気流の流動を示す図、
第６図は新気ガイド壁の別の実施例を示す図であ
る。４……燃焼室、５……給気弁、６……給気ポー
ト、１４……マスク壁、１６……新気ガイド壁、
１６ｂ，１６ｃ……ガイド面。 Fig. 1 is a side sectional view of an embodiment in which the present invention is applied to a two-stroke diesel engine, Fig. 2 is a diagram of the inner wall of the cylinder head of the same embodiment, and Fig. 3 is a schematic diagram showing the shape of the fresh air guide wall. Figures 4 and 5 are diagrams showing the flow of fresh air when the intake valve is opened;
FIG. 6 is a diagram showing another embodiment of the fresh air guide wall. 4... Combustion chamber, 5... Air supply valve, 6... Air supply port, 14... Mask wall, 16... Fresh air guide wall,
16b, 16c...Guide surfaces.

Claims

[Scope of utility model registration request]

2 with an air supply valve and an exhaust valve in the cylinder head
In a cycle internal combustion engine, a fresh air guide wall extending from the inner wall surface in a direction opposite to the exhaust valve is formed on the exhaust valve side inner wall surface of the intake port outlet, and at least a tip region of the fresh air guide wall is formed. Direct the intake valve toward the intake valve opening formed on the side opposite to the exhaust valve, and direct the exhaust valve side of the opening formed between the intake valve periphery and the valve seat on the inner wall surface of the cylinder head at least at the initial stage of opening of the intake valve. A two-stroke internal combustion engine that is provided with a mask wall that is closed for a period of time and suppresses fresh air from flowing into the combustion chamber from the exhaust valve side of the intake valve opening.