JPS6477708A - Valve guide - Google Patents
Valve guideInfo
- Publication number
- JPS6477708A JPS6477708A JP23577987A JP23577987A JPS6477708A JP S6477708 A JPS6477708 A JP S6477708A JP 23577987 A JP23577987 A JP 23577987A JP 23577987 A JP23577987 A JP 23577987A JP S6477708 A JPS6477708 A JP S6477708A
- Authority
- JP
- Japan
- Prior art keywords
- section
- high density
- low density
- valve guide
- valve
- 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
Abstract
PURPOSE:To enable wear resistance and oil impregnation concurrently which conflict with each other in properties by forming a high density section and a low density section respectively at the both end and center sections of a valve guide supporting the sliding motion of a valve stem. CONSTITUTION:A valve guide 1 is used in the engine of an automobile and the like, and comes slidably in contact with the valve stem of a suction and an exhaust valve inserted into the center hole 10 of the valves so as to support the sliding motion of the valve stem. In this case, the valve guide 1 is formed with a high density section 11 composed of the sintered member of a high density iron family at its both ends, at least its inner circumferential surfaces. And it is also formed with a low density section 12 composed of the sintered member of a low density iron family at its center section, at least its inner circumferential surface. And the density of the high density section 11 is set to be equal or more than 6.8g/cm<3>, and the density of the low density section 12 is set to be within a range covering 6.0 to 6.8g/cm<3> respectively. This constitution improves wear resistance and oil impregnation concurrently which conflict with each other in properties.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23577987A JPS6477708A (en) | 1987-09-19 | 1987-09-19 | Valve guide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23577987A JPS6477708A (en) | 1987-09-19 | 1987-09-19 | Valve guide |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6477708A true JPS6477708A (en) | 1989-03-23 |
Family
ID=16991115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23577987A Pending JPS6477708A (en) | 1987-09-19 | 1987-09-19 | Valve guide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6477708A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0475113U (en) * | 1990-11-08 | 1992-06-30 | ||
WO2016202525A1 (en) * | 2015-06-16 | 2016-12-22 | Bleistahl-Produktions Gmbh & Co Kg. | Valve guide |
EP3084154B1 (en) | 2013-12-18 | 2018-02-21 | Bleistahl-Produktions GmbH & Co KG. | Double/triple-layer valve guide |
-
1987
- 1987-09-19 JP JP23577987A patent/JPS6477708A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0475113U (en) * | 1990-11-08 | 1992-06-30 | ||
EP3084154B1 (en) | 2013-12-18 | 2018-02-21 | Bleistahl-Produktions GmbH & Co KG. | Double/triple-layer valve guide |
WO2016202525A1 (en) * | 2015-06-16 | 2016-12-22 | Bleistahl-Produktions Gmbh & Co Kg. | Valve guide |
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