JPH0352365U - - Google Patents

Description

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

第１図はシリンダヘツドの底面図、第２図は２
サイクル内燃機関の側面断面図、第３図はＥＧＲ
弁の弁開度を示す線図、第４図は給気弁、排気弁
およびＥＧＲ弁の開弁期間を示す線図である。 ４……燃焼室、７……給気弁、８……排気弁、
１３……排気ポート、１５……ＥＧＲ弁、１７…
…ＥＧＲ管。 Figure 1 is a bottom view of the cylinder head, Figure 2 is a bottom view of the cylinder head.
Side sectional view of cycle internal combustion engine, Figure 3 is EGR
FIG. 4 is a diagram showing the opening degrees of the valves, and FIG. 4 is a diagram showing the opening periods of the intake valve, the exhaust valve, and the EGR valve. 4... Combustion chamber, 7... Air supply valve, 8... Exhaust valve,
13...Exhaust port, 15...EGR valve, 17...
...EGR pipe.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 給気弁と、該給気弁より先に開弁しかつ先に閉
弁する排気弁とを具備し、機関排気通路と機関燃
焼室とを連結する排気ガス再循環通路内に排気ガ
ス再循環弁を設け、前記排気弁が開弁した後でか
つ前記給気弁が開弁する前に前記排気ガス再循環
弁を開弁せしめ、前記燃焼室内のガスが前記排気
ガス再循環通路内に流入する前に前記排気ガス再
循環弁を閉弁せしめるようにした２サイクル内燃
機関。 The exhaust gas is recirculated in an exhaust gas recirculation passage that connects the engine exhaust passage and the engine combustion chamber, and includes an intake valve and an exhaust valve that opens before the intake valve and closes before the intake valve. a valve is provided, and the exhaust gas recirculation valve is opened after the exhaust valve is opened and before the intake valve is opened, and the gas in the combustion chamber flows into the exhaust gas recirculation passage. A two-stroke internal combustion engine, wherein the exhaust gas recirculation valve is closed before the exhaust gas recirculation valve is closed.