JPS6040801Y2 - Mushroom valves in internal combustion engines - Google Patents
Mushroom valves in internal combustion enginesInfo
- Publication number
- JPS6040801Y2 JPS6040801Y2 JP1981130277U JP13027781U JPS6040801Y2 JP S6040801 Y2 JPS6040801 Y2 JP S6040801Y2 JP 1981130277 U JP1981130277 U JP 1981130277U JP 13027781 U JP13027781 U JP 13027781U JP S6040801 Y2 JPS6040801 Y2 JP S6040801Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- internal combustion
- mushroom
- annular groove
- combustion engines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Lift Valve (AREA)
Description
【考案の詳細な説明】 本考案は内燃機関におけるきのこ形弁に関する。[Detailed explanation of the idea] The present invention relates to a mushroom valve in an internal combustion engine.
従来、内燃機関における吸気若しくは排気部に使用され
るきのこ形弁の弁棒側弁かさ表面に、例えば吸気弁にあ
ってはその開弁時の吹き上げにより、また排気弁にあっ
てはその排気により未燃物、燃焼残渣等の異物が付着し
て、その閉弁時にシート部にかみ込み、シート部が損傷
するという欠点があった。Conventionally, the surface of the valve stem side valve surface of a mushroom-shaped valve used in the intake or exhaust section of an internal combustion engine has been exposed to air pollution, for example, in the case of an intake valve due to the blow-up when the valve is opened, and in the case of an exhaust valve due to the exhaust gas. There is a drawback that foreign matter such as unburned matter and combustion residue adheres and gets caught in the seat part when the valve is closed, causing damage to the seat part.
本考案は上記欠点を解消し得るきのこ形弁を提供するも
ので、以下、その一実施例を図面に基づき説明する。The present invention provides a mushroom-shaped valve that can overcome the above-mentioned drawbacks, and one embodiment thereof will be described below with reference to the drawings.
即ち、内燃機関におけるきのこ形弁１の弁棒２側弁かさ
３表面に、且つ弁座４との当接部内側で該弁座４内周に
沿う環状溝５を形成し、更にこの環状溝５の外周端は弁
座４の内周端より外方位置となるようにしたものである
。That is, an annular groove 5 is formed along the inner periphery of the valve seat 4 on the surface of the valve stem 2 side valve cap 3 of the mushroom-shaped valve 1 in an internal combustion engine and inside the contact portion with the valve seat 4. The outer peripheral end of the valve seat 5 is positioned outward from the inner peripheral end of the valve seat 4.
なお、上記環状溝５の断面形状は円弧の一部となるよう
な丸みを有するものにされている。Note that the cross-sectional shape of the annular groove 5 is rounded to form a part of a circular arc.
従って、上記構成によると、吸気弁１にあってはその開
弁時に燃焼室６から吸気通路７内に流入する未燃物若し
くは燃焼残渣、または排気弁１にあってはその排気によ
り排気通路７に流入する未燃物若しくは燃焼残渣は、弁
棒２側弁かさ３表面に形成された環状溝５に留り、閉弁
時のかみ込みは発生しない。Therefore, according to the above configuration, in the case of the intake valve 1, unburnt substances or combustion residues flowing into the intake passage 7 from the combustion chamber 6 when the valve is opened, or in the case of the exhaust valve 1, the exhaust passage 7 is caused by the exhaust gas. The unburned substances or combustion residues flowing into the valve stem remain in the annular groove 5 formed on the surface of the valve cap 3 on the side of the valve stem 2, and no entrapment occurs when the valve is closed.
そして、上記環状溝５内に留った未燃物若しくは燃焼残
渣は開弁時のガス流によって排出される。Unburned matter or combustion residue remaining in the annular groove 5 is discharged by the gas flow when the valve is opened.
以上のように、本考案の内燃機関におけるきのこ形弁に
よれば、内燃機関におけるきのこ形弁の弁棒側弁かさ表
面に且つ弁座との当接部内側で環状溝を形成すると共に
、該環状溝の外周端が弁座の内周端より外方に位置する
ようにしたので、弁棒側通路内に流入した未燃物、燃焼
残渣等の異物は確実に環状溝部内に留まるので、シート
部に異物がかみ込むことがない。As described above, according to the mushroom-shaped valve for an internal combustion engine of the present invention, an annular groove is formed on the valve stem-side valve bulk surface of the mushroom-shaped valve for an internal combustion engine and inside the contact portion with the valve seat. Since the outer circumferential end of the annular groove is positioned outward from the inner circumferential edge of the valve seat, foreign matter such as unburned matter and combustion residue that has flowed into the valve stem side passage will surely remain within the annular groove. Foreign matter will not get caught in the seat part.
図面は要部拡大図である。
１・・・・・・きのこ形弁（吸気弁、排気弁）、２・・
・・・・弁棒、３・・・・・・弁かさ、４・・・・・・
弁座、５・・・・・・環状溝、６・・・・・・燃焼室、
７・・・・・・吸気通路、排気通路。The drawing is an enlarged view of the main parts. 1...Mushroom-shaped valve (intake valve, exhaust valve), 2...
... Valve stem, 3... Valve cap, 4...
Valve seat, 5... annular groove, 6... combustion chamber,
7...Intake passage, exhaust passage.
Claims (1)
弁座との当接部内側で環状溝を形成すると共に、該環状
溝の外周端が弁座の内周端より外方に位置するようにし
たことを特徴とする内燃機関におけるきのこ形弁。An annular groove is formed on the valve stem-side valve bulk surface of a mushroom-shaped valve in an internal combustion engine and inside the contact area with the valve seat, and the outer circumferential end of the annular groove is located outward from the inner circumferential edge of the valve seat. A mushroom-shaped valve for an internal combustion engine, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981130277U JPS6040801Y2 (en) | 1981-08-31 | 1981-08-31 | Mushroom valves in internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981130277U JPS6040801Y2 (en) | 1981-08-31 | 1981-08-31 | Mushroom valves in internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5835606U JPS5835606U (en) | 1983-03-08 |
| JPS6040801Y2 true JPS6040801Y2 (en) | 1985-12-10 |
Family
ID=29923912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981130277U Expired JPS6040801Y2 (en) | 1981-08-31 | 1981-08-31 | Mushroom valves in internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6040801Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647203B2 (en) * | 1978-11-27 | 1981-11-09 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647203U (en) * | 1979-09-18 | 1981-04-27 |
-
1981
- 1981-08-31 JP JP1981130277U patent/JPS6040801Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647203B2 (en) * | 1978-11-27 | 1981-11-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5835606U (en) | 1983-03-08 |
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