JPH0218622U

JPH0218622U -

Info

Publication number: JPH0218622U
Application number: JP9402688U
Authority: JP
Priority date: 1988-07-18
Filing date: 1988-07-18
Publication date: 1990-02-07

Description

[Brief explanation of drawings]

第１図は従来のリード弁を用いた４サイクル内
燃機関の要部断面図、第２図は従来のリード弁付
吸気系における低速運転時のリード弁のリフト量
および圧力の時間変化を示す図、第３図は同吸気
系における高速運転時のリフト量および圧力の時
間変化を示す図、第４図は本考案に係る一実施例
のリード弁の平面図、第５図は同側面図、第６図
は同実施例のリード弁本体の平面図、第７図は同
側面図、第８図は第４図における―断面図、
第９図は弁が開いた状態を示す同断面図、第１０
図は出力特性を比較した結果を示す図である。１……リード弁、２……弁支持体、３……リー
フ弁本体、４……弁座、５……連通孔、６……フ
ランジ、７……突起、８……四角錐体、９……樹
脂薄膜、１０……ねじ。 Figure 1 is a cross-sectional view of the main parts of a four-stroke internal combustion engine using a conventional reed valve, and Figure 2 is a diagram showing changes in reed valve lift amount and pressure over time during low-speed operation in a conventional intake system with a reed valve. , FIG. 3 is a diagram showing changes in lift amount and pressure over time during high-speed operation in the same intake system, FIG. 4 is a plan view of a reed valve according to an embodiment of the present invention, and FIG. 5 is a side view of the same. FIG. 6 is a plan view of the reed valve main body of the same embodiment, FIG. 7 is a side view of the same, and FIG. 8 is a sectional view in FIG. 4.
Figure 9 is a sectional view of the same showing the valve in an open state;
The figure is a diagram showing the results of comparing output characteristics. DESCRIPTION OF SYMBOLS 1...Reed valve, 2...Valve support body, 3...Leaf valve body, 4...Valve seat, 5...Communication hole, 6...Flange, 7...Protrusion, 8...Square pyramid, 9 ...Resin thin film, 10...Screw.

Claims

[Scope of utility model registration request]

In a reed valve that is installed in an intake passage of an internal combustion engine and whose leaf valve body comes into contact with a valve seat to close the valve and opens away from the valve seat, the leaf valve body is formed of a thin metal plate and at least the valve seat of the leaf valve body is formed. 1. A reed valve characterized in that one side that comes into contact with the reed valve is coated with a thin film elastic member.