JPH0261168U - - Google Patents
Info
- Publication number
- JPH0261168U JPH0261168U JP14001588U JP14001588U JPH0261168U JP H0261168 U JPH0261168 U JP H0261168U JP 14001588 U JP14001588 U JP 14001588U JP 14001588 U JP14001588 U JP 14001588U JP H0261168 U JPH0261168 U JP H0261168U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- valve guide
- annular groove
- ring member
- fitted
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Gasket Seals (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図はこの考案によるバルブガイドのシール
構造の一実施例を示す断面図、第２図Ａ及び第２
図Ｂは第１図のシリンダヘツドとバルブガイドの
上部の一例を示す拡大断面図、第３図Ａ及び第３
図Ｂは第１図のシリンダヘツドとバルブガイドの
上部の別の例を示す拡大断面図、第４図は従来の
水冷エンジンにおけるバルブガイドのシール構造
の一例を示す断面図、並びに第５図は従来の断熱
エンジンにおけるバルブガイドのシール構造の一
例を示す断面図である。
１……シリンダヘツド、２……バルブ、３……
バルブガイド、４……小径下部、５……大径上部
、６，１０……環状溝、７，２３……金属製リン
グ部材、８……シリンダヘツド下面部、９……断
熱ガスケツト、１３……断熱層、１５……シリン
ダヘツド上面、１６……貫通孔、１７，１８……
壁面、１９……外周面、２０……排気ポート、２
６……バルブステム。
Fig. 1 is a sectional view showing an embodiment of the valve guide seal structure according to this invention, Fig. 2A and Fig.
Figure B is an enlarged sectional view showing an example of the cylinder head and the upper part of the valve guide in Figure 1, Figures 3A and 3
Figure B is an enlarged sectional view showing another example of the cylinder head and the upper part of the valve guide in Figure 1, Figure 4 is a sectional view showing an example of the seal structure of the valve guide in a conventional water-cooled engine, and Figure 5 is FIG. 2 is a cross-sectional view showing an example of a seal structure of a valve guide in a conventional adiabatic engine. 1...Cylinder head, 2...Valve, 3...
Valve guide, 4... Small diameter lower part, 5... Large diameter upper part, 6, 10... Annular groove, 7, 23... Metal ring member, 8... Lower surface of cylinder head, 9... Insulating gasket, 13... ...Heat insulation layer, 15...Top surface of cylinder head, 16...Through hole, 17, 18...
Wall surface, 19...Outer peripheral surface, 20...Exhaust port, 2
6... Valve stem.
Claims (1)
ダヘツドの貫通孔に圧入した小径下部と該シリン
ダヘツド上面に露出した大径上部から構成し、前
記小径下部との境界部位の前記大径上部の下面に
形成した環状溝に熱膨張係数の大きい金属製リン
グ部材を嵌入したことを特徴とするバルブガイド
のシール構造。 (2) 前記金属製リング部材は、前記シリンダヘ
ツドとは別体のリング部材であり、前記環状溝と
該環状溝に対向する前記シリンダヘツド上面に形
成した環状溝とに跨がつて嵌入されていることを
特徴とする請求項１に記載のバルブガイドのシー
ル構造。 (3) 前記金属製リング部材は、前記シリンダヘ
ツド上面に突出した一体構造のリング部材であり
、前記小径下部との境界部位の前記大径上部の下
面に形成した前記環状溝に嵌入されていることを
特徴とする請求項１に記載のバルブガイドのシー
ル構造。[Claims for Utility Model Registration] (1) A ceramic valve guide consisting of a small-diameter lower part press-fitted into a through hole of a metal cylinder head and a large-diameter upper part exposed on the upper surface of the cylinder head, and the boundary area with the small-diameter lower part. A seal structure for a valve guide, characterized in that a metal ring member having a large coefficient of thermal expansion is fitted into an annular groove formed on the lower surface of the large diameter upper part of the valve guide. (2) The metal ring member is a ring member separate from the cylinder head, and is fitted across the annular groove and an annular groove formed on the upper surface of the cylinder head opposite to the annular groove. The seal structure for a valve guide according to claim 1, characterized in that: (3) The metal ring member is an integral ring member that protrudes from the upper surface of the cylinder head, and is fitted into the annular groove formed on the lower surface of the large diameter upper portion at the boundary with the small diameter lower portion. The valve guide seal structure according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14001588U JPH0261168U (en) | 1988-10-28 | 1988-10-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14001588U JPH0261168U (en) | 1988-10-28 | 1988-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0261168U true JPH0261168U (en) | 1990-05-07 |
Family
ID=31403802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14001588U Pending JPH0261168U (en) | 1988-10-28 | 1988-10-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0261168U (en) |
-
1988
- 1988-10-28 JP JP14001588U patent/JPH0261168U/ja active Pending
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