JPH0330505U - - Google Patents
Info
- Publication number
- JPH0330505U JPH0330505U JP9238689U JP9238689U JPH0330505U JP H0330505 U JPH0330505 U JP H0330505U JP 9238689 U JP9238689 U JP 9238689U JP 9238689 U JP9238689 U JP 9238689U JP H0330505 U JPH0330505 U JP H0330505U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve guide
- engine
- guide
- hollow portion
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図は、本考案にかかるバルブガイドを備え
たエンジンにおける、排気ポートまわりのシリン
ダヘツドの縦断面説明図である。第２図は、焼結
金属で形成されたバルブガイド成形体の縦断面説
明図であり、中空部の形成方法を示す。第３図は
、周壁内に銅箔を埋め込んだバルブガイド成形体
の縦断面説明図であり、中空部のもう１つの形成
方法を示す。第４図は、バルブガイドの断熱性を
測定するために用いられる実験装置を示す図であ
る。第５図は、従来のバルブガイドを備えたエン
ジンにおける、排気ポートまわりのシリンダヘツ
ドの縦断面説明図である。
１……シリンダヘツド、２……燃焼室、３……
排気ポート、４……排気弁、５……バルブステム
、６……バルブガイド、７……中空部、８……水
通路。
FIG. 1 is an explanatory longitudinal sectional view of a cylinder head around an exhaust port in an engine equipped with a valve guide according to the present invention. FIG. 2 is an explanatory longitudinal cross-sectional view of a valve guide molded body made of sintered metal, and shows a method of forming a hollow portion. FIG. 3 is an explanatory longitudinal cross-sectional view of a valve guide molded body in which copper foil is embedded in the peripheral wall, and shows another method of forming the hollow portion. FIG. 4 is a diagram showing an experimental apparatus used to measure the thermal insulation properties of a valve guide. FIG. 5 is an explanatory longitudinal sectional view of a cylinder head around an exhaust port in an engine equipped with a conventional valve guide. 1... Cylinder head, 2... Combustion chamber, 3...
Exhaust port, 4...Exhaust valve, 5...Valve stem, 6...Valve guide, 7...Hollow part, 8...Water passage.
Claims (1)
向に摺動自在に把持する焼結合金製バルブガイド
において、 バルブガイドの周壁内部に、バルブガイド内周
面を取り巻くように形成される中空部を設けたこ
とを特徴とするエンジン用バルブガイド。[Scope of Claim for Utility Model Registration] In a sintered metal valve guide that grips a valve stem of an engine valve so as to be able to slide freely in the axial direction of the valve stem, there is a valve guide that surrounds the inner peripheral surface of the valve guide within the peripheral wall of the valve guide. A valve guide for an engine, characterized by having a hollow portion formed in the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9238689U JPH0330505U (en) | 1989-08-03 | 1989-08-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9238689U JPH0330505U (en) | 1989-08-03 | 1989-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0330505U true JPH0330505U (en) | 1991-03-26 |
Family
ID=31641815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9238689U Pending JPH0330505U (en) | 1989-08-03 | 1989-08-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0330505U (en) |
-
1989
- 1989-08-03 JP JP9238689U patent/JPH0330505U/ja active Pending