JPH01160172U

JPH01160172U -

Info

Publication number: JPH01160172U
Application number: JP5585388U
Authority: JP
Priority date: 1988-04-27
Filing date: 1988-04-27
Publication date: 1989-11-07

Description

[Brief explanation of the drawing]

第１図は２サイクル内燃機関の側面断面図、第
２図はシリンダヘツドの内壁面を示す図、第３図
は給排気弁の開弁期間および噴射時期を示す線図
、第４図はピストンが下降したところを示す側面
断面図、第５図は別の実施例の側面断面図である
。６……給気弁、７……排気弁、９ａ……マスク
壁、１４……第１燃料噴射弁、１５，１６……第
２燃料噴射弁。 Figure 1 is a side sectional view of a two-stroke internal combustion engine, Figure 2 is a diagram showing the inner wall surface of the cylinder head, Figure 3 is a diagram showing the opening period of the intake and exhaust valves and injection timing, and Figure 4 is a diagram showing the piston. FIG. 5 is a side sectional view of another embodiment. 6... Air supply valve, 7... Exhaust valve, 9a... Mask wall, 14... First fuel injection valve, 15, 16... Second fuel injection valve.

Claims

[Scope of utility model registration request]

A mask wall extending from the inner wall surface of the cylinder head toward the combustion chamber is formed between the intake valve and the exhaust valve, and the opening between the peripheral edge of the intake valve located on the exhaust valve side and the valve seat is opened by the mask wall to supply air. The valve is closed during the full opening period of the valve, and a first fuel injection valve is provided in the intake port, and fuel is injected from the first fuel injection valve slightly before the intake valve closes, and the fuel is injected into the combustion chamber. A two-cycle internal combustion engine that is provided with a second fuel injection valve so that fuel is injected from the second fuel injection valve near bottom dead center during high-load engine operation.