JPH0240905U - - Google Patents
Info
- Publication number
- JPH0240905U JPH0240905U JP12020788U JP12020788U JPH0240905U JP H0240905 U JPH0240905 U JP H0240905U JP 12020788 U JP12020788 U JP 12020788U JP 12020788 U JP12020788 U JP 12020788U JP H0240905 U JPH0240905 U JP H0240905U
- Authority
- JP
- Japan
- Prior art keywords
- tappet
- valve
- hydraulic pressure
- space chamber
- spring
- 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
- 238000002485 combustion reaction Methods 0.000 claims 2
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第1図はこの考案の一実施例を示す動弁機構の
縦断正面図、第2図はエンジン出力とバルブリフ
トの関係を示すグラフ、第3図は従来の動弁機構
の縦断正面図である。
8……バルブスプリング、12……アウタタペ
ツト、13……インナタペツト、15……空間室
、16……タペツトスプリング、19……油圧通
路(油圧供給手段)。
Fig. 1 is a longitudinal sectional front view of a valve mechanism showing an embodiment of this invention, Fig. 2 is a graph showing the relationship between engine output and valve lift, and Fig. 3 is a longitudinal sectional front view of a conventional valve mechanism. . 8... Valve spring, 12... Outer tappet, 13... Inner tappet, 15... Space chamber, 16... Tappet spring, 19... Hydraulic passage (hydraulic supply means).
Claims (1)
ブステムに当接するインナタペツトとからなり、
インナタペツトの内部にバルブスプリング、イン
ナタペツトとアウタタペツトとの間の空間室にタ
ペツトスプリングを設けた内燃機関の動弁機構に
おいて、前記空間室に油圧を供給する油圧供給手
段を設け、高回転時には前記空間室に油圧を供給
してバルブリフトを大とし、低回転時には前記空
間室の油圧を抜き、バルブリフトを小としたこと
を特徴とする内燃機関の動弁機構。 Consists of an outer tappet that contacts the camshaft and an inner tappet that contacts the valve stem.
In a valve operating mechanism for an internal combustion engine in which a valve spring is provided inside an inner tappet and a tapepet spring is provided in a space chamber between the inner tappet and the outer tappet, a hydraulic pressure supply means is provided for supplying hydraulic pressure to the space chamber, and when the rotation speed is high, the valve spring is provided in the space chamber between the inner tappet and the outer tappet. A valve operating mechanism for an internal combustion engine, characterized in that hydraulic pressure is supplied to a chamber to increase the valve lift, and when the rotation speed is low, the hydraulic pressure in the space chamber is removed to reduce the valve lift.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12020788U JPH0240905U (en) | 1988-09-13 | 1988-09-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12020788U JPH0240905U (en) | 1988-09-13 | 1988-09-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0240905U true JPH0240905U (en) | 1990-03-20 |
Family
ID=31366114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12020788U Pending JPH0240905U (en) | 1988-09-13 | 1988-09-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0240905U (en) |
-
1988
- 1988-09-13 JP JP12020788U patent/JPH0240905U/ja active Pending