JPH0178208U - - Google Patents
Info
- Publication number
- JPH0178208U JPH0178208U JP1987173796U JP17379687U JPH0178208U JP H0178208 U JPH0178208 U JP H0178208U JP 1987173796 U JP1987173796 U JP 1987173796U JP 17379687 U JP17379687 U JP 17379687U JP H0178208 U JPH0178208 U JP H0178208U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- valve
- actuator
- combustion engine
- internal combustion
- 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
- 238000002485 combustion reaction Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Valve Device For Special Equipments (AREA)
Description
第１図はこの考案のシステム全体の概略図。第
２図はこの考案の弁駆動装置のエンジン横方向に
おける詳細断面図。第３図は第２図の−線に
沿う断面図。第４図は第２図の−線に沿う断
面図。第５図は第４図の方向よりみた図。第６
図はこの考案の装置の作動タイミングを説明する
図。
２０，２０′……吸気弁、５４，５４′……油
圧アクチユエータ、６０，６０′……プランジヤ
、６６，６６′……油圧室、７４……油圧導入制
御弁、７６……油圧排出制御弁、８０……圧電素
子積層体、９９，１００……油圧通路、１２２…
…圧電素子積層体、１３０……高圧アキユムレー
タ、１３２……低圧アキユムレータ、１３４……
補助油圧アキユムレータ、１５２……油圧ポンプ
、１６４……制御回路、１６５……イグニツシヨ
ンスイツチ、１８０……イグニツシヨンスイツチ
と連動するスイツチ、１８２……単安定回路。
Figure 1 is a schematic diagram of the entire system of this invention. FIG. 2 is a detailed cross-sectional view of the valve drive device of this invention in the transverse direction of the engine. FIG. 3 is a sectional view taken along the - line in FIG. 2. FIG. 4 is a sectional view taken along the - line in FIG. 2. Figure 5 is a view seen from the direction of Figure 4. 6th
The figure is a diagram explaining the operation timing of the device of this invention. 20, 20'... Intake valve, 54, 54'... Hydraulic actuator, 60, 60'... Plunger, 66, 66'... Hydraulic chamber, 74... Hydraulic pressure introduction control valve, 76... Hydraulic discharge control valve , 80... Piezoelectric element laminate, 99, 100... Hydraulic passage, 122...
...Piezoelectric element laminate, 130...High voltage accumulator, 132...Low voltage accumulator, 134...
Auxiliary hydraulic accumulator, 152... Hydraulic pump, 164... Control circuit, 165... Ignition switch, 180... Switch interlocked with the ignition switch, 182... Monostable circuit.
Claims (1)
備え、油圧ポンプからの油圧を油圧導入制御弁を
介して油圧アクチユエータに導入し、油圧アクチ
ユエータからの油圧を油圧排出制御弁を介して排
出し、これにより弁の作動を制御する油圧式弁駆
動制御装置において、内燃機関の停止直後を検出
する手段と、その時点において油圧排出制御弁を
アクチユエータからの油圧が排出されるように作
動する手段とを具備することを特徴とする内燃機
関の油圧式弁駆動装置。 A hydraulic actuator for driving a valve of an internal combustion engine is provided, hydraulic pressure from a hydraulic pump is introduced into the hydraulic actuator via a hydraulic pressure introduction control valve, and hydraulic pressure from the hydraulic actuator is discharged via a hydraulic discharge control valve. A hydraulic valve drive control device for controlling the operation of a valve, comprising means for detecting immediately after the internal combustion engine has stopped, and means for operating a hydraulic discharge control valve so that hydraulic pressure from an actuator is discharged at that point. A hydraulic valve drive device for an internal combustion engine, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17379687U JPH0521604Y2 (en) | 1987-11-16 | 1987-11-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17379687U JPH0521604Y2 (en) | 1987-11-16 | 1987-11-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0178208U true JPH0178208U (en) | 1989-05-25 |
| JPH0521604Y2 JPH0521604Y2 (en) | 1993-06-03 |
Family
ID=31465686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17379687U Expired - Lifetime JPH0521604Y2 (en) | 1987-11-16 | 1987-11-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0521604Y2 (en) |
-
1987
- 1987-11-16 JP JP17379687U patent/JPH0521604Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0521604Y2 (en) | 1993-06-03 |
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