JPS643212A - Valve system for internal combustion engine - Google Patents
Valve system for internal combustion engineInfo
- Publication number
- JPS643212A JPS643212A JP15692087A JP15692087A JPS643212A JP S643212 A JPS643212 A JP S643212A JP 15692087 A JP15692087 A JP 15692087A JP 15692087 A JP15692087 A JP 15692087A JP S643212 A JPS643212 A JP S643212A
- Authority
- JP
- Japan
- Prior art keywords
- oil pressure
- switching means
- supply passage
- supply
- combustion engine
- 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.)
- Granted
Links
Landscapes
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
PURPOSE:To aim at stabilization of a supply oil pressure by disposing an oil pressure switching means in an oil pressure supply passage leading to the oil pressure chamber of a connection switching mechanism for cam followers, and providing a relief valve in the oil pressure switching means. CONSTITUTION:An oil pressure supply passage 31 is connected to the oil pressure chamber 29 and the oil pressure tappet of a connection switching mechanism 10 for cam followers 7, 8, 9. In the oil pressure supply passage 31 is disposed an oil pressure switching means 50 for switching and supplying high and low oil pressures. In the oil pressure switching means 50 is provided a relief valve 55 for releasing an oil pressure when the oil pressure supplied to the oil pressure supply passage 31 exceeds a predetermined value. Therefore, the upper limit of the supply oil pressure is determined so that the oil pressure can be kept constant, thereby enabling the stabilization of the supply oil pressure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15692087A JPS643212A (en) | 1987-06-24 | 1987-06-24 | Valve system for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15692087A JPS643212A (en) | 1987-06-24 | 1987-06-24 | Valve system for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS643212A true JPS643212A (en) | 1989-01-09 |
JPH0372812B2 JPH0372812B2 (en) | 1991-11-19 |
Family
ID=15638264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15692087A Granted JPS643212A (en) | 1987-06-24 | 1987-06-24 | Valve system for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS643212A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5128923A (en) * | 1990-01-19 | 1992-07-07 | Sony Corporation | Disc cartridge for cleaning an objective lens |
KR100737005B1 (en) * | 2005-12-15 | 2007-07-09 | 현대자동차주식회사 | hydraulic circuit for variable valve lift system |
WO2010100753A1 (en) * | 2009-03-06 | 2010-09-10 | トヨタ自動車株式会社 | Variable valve gear device for internal combustion engine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6119911A (en) * | 1984-07-06 | 1986-01-28 | Honda Motor Co Ltd | Valve operation suspending device for internal-combustion engine |
JPS61250316A (en) * | 1985-04-26 | 1986-11-07 | Mazda Motor Corp | Valve tappet device for engine |
-
1987
- 1987-06-24 JP JP15692087A patent/JPS643212A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6119911A (en) * | 1984-07-06 | 1986-01-28 | Honda Motor Co Ltd | Valve operation suspending device for internal-combustion engine |
JPS61250316A (en) * | 1985-04-26 | 1986-11-07 | Mazda Motor Corp | Valve tappet device for engine |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5128923A (en) * | 1990-01-19 | 1992-07-07 | Sony Corporation | Disc cartridge for cleaning an objective lens |
KR100737005B1 (en) * | 2005-12-15 | 2007-07-09 | 현대자동차주식회사 | hydraulic circuit for variable valve lift system |
WO2010100753A1 (en) * | 2009-03-06 | 2010-09-10 | トヨタ自動車株式会社 | Variable valve gear device for internal combustion engine |
JP4993034B2 (en) * | 2009-03-06 | 2012-08-08 | トヨタ自動車株式会社 | Variable valve operating device for internal combustion engine |
US8813698B2 (en) | 2009-03-06 | 2014-08-26 | Toyota Jidosha Kabushiki Kaisha | Variable valve apparatus of internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
JPH0372812B2 (en) | 1991-11-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |