JPS5634913A - Hydraulic valve lift device - Google Patents
Hydraulic valve lift deviceInfo
- Publication number
- JPS5634913A JPS5634913A JP10951079A JP10951079A JPS5634913A JP S5634913 A JPS5634913 A JP S5634913A JP 10951079 A JP10951079 A JP 10951079A JP 10951079 A JP10951079 A JP 10951079A JP S5634913 A JPS5634913 A JP S5634913A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- lift
- valve
- plunger
- intake
- 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-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
PURPOSE: To reduce an impulsive force at the time of seating of the intake/exhaust valves of an engine having a lift device wherein the lift of the valve can be changed, by providing a relief valve which is controlled by the slit of a plunger and the temperature of oil.
CONSTITUTION: A lift device comprises a lift body 5 having an oil pressure chamber 26 and a plunger 6 for opening/closing an intake/exhaust valve 25. Oil escapes from the oil pressure chamber 26 through an orifice 27 depending on the rotational frequency of a cam 1a to change the lift of the plunger 6 to alter the lift of the intake/exhaust valve 25. As a result, a braking force is applied at the time of seating of the valve to reduce an impulsive force. Since the set pressure of a relief valve 43 is controlled depending on the temperature of the oil, smooth braking is effected in a range from the low temperature of the oil to its high temperature.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10951079A JPS5634913A (en) | 1979-08-28 | 1979-08-28 | Hydraulic valve lift device |
US06/178,285 US4408580A (en) | 1979-08-24 | 1980-08-15 | Hydraulic valve lift device |
US06/474,055 US4452187A (en) | 1979-08-24 | 1983-03-10 | Hydraulic valve lift device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10951079A JPS5634913A (en) | 1979-08-28 | 1979-08-28 | Hydraulic valve lift device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5634913A true JPS5634913A (en) | 1981-04-07 |
JPS6244088B2 JPS6244088B2 (en) | 1987-09-18 |
Family
ID=14512085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10951079A Granted JPS5634913A (en) | 1979-08-24 | 1979-08-28 | Hydraulic valve lift device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5634913A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62708U (en) * | 1985-06-19 | 1987-01-06 |
-
1979
- 1979-08-28 JP JP10951079A patent/JPS5634913A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62708U (en) * | 1985-06-19 | 1987-01-06 | ||
JPH0455205Y2 (en) * | 1985-06-19 | 1992-12-25 |
Also Published As
Publication number | Publication date |
---|---|
JPS6244088B2 (en) | 1987-09-18 |
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