JPH0163740U - - Google Patents
Info
- Publication number
- JPH0163740U JPH0163740U JP1987158444U JP15844487U JPH0163740U JP H0163740 U JPH0163740 U JP H0163740U JP 1987158444 U JP1987158444 U JP 1987158444U JP 15844487 U JP15844487 U JP 15844487U JP H0163740 U JPH0163740 U JP H0163740U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- compression ratio
- fluid chamber
- oil
- pressure
- 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
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図はこの考案に係る圧縮比可変装置の構成
を示す構成説明図、第２図はこの実施例における
制御の要部を示すフローチヤートである。
２……インナピストン、３……ピストンピン、
４……アウタピストン、５……上部液室、９……
シリンダ部、１０……スプール弁、１３……作動
液室、２５……上部排出通路、３２……主オイル
ポンプ、３４……補助オイルポンプ、３５……電
動モータ、３７……電磁弁、３８……制御回路。
FIG. 1 is an explanatory diagram showing the construction of a variable compression ratio device according to this invention, and FIG. 2 is a flowchart showing the main parts of control in this embodiment. 2...Inner piston, 3...Piston pin,
4... Outer piston, 5... Upper liquid chamber, 9...
Cylinder part, 10... Spool valve, 13... Working fluid chamber, 25... Upper discharge passage, 32... Main oil pump, 34... Auxiliary oil pump, 35... Electric motor, 37... Solenoid valve, 38 ...control circuit.
Claims (1)
連結されたインナピストンと、このインナピスト
ンの外側に摺動可能に嵌合したアウタピストンと
、このアウタピストンの冠部裏面とインナピスト
ンの上面との間に形成され、かつ逆止弁を介して
油が供給される上部液室と、上記ピストンピンの
内部に形成されたシリンダ部と、このシリンダ部
内に摺動可能に配設され、かつ該シリンダ部内に
隔成された作動液室の油圧が所定圧となると摺動
するスプール弁と、このスプール弁の摺動によつ
て開放されて上記上部液室から油を排出する排出
通路と、を備えてなる圧縮比可変機構が各気筒に
配設された内燃機関の圧縮比可変装置において、
上記作動液室内に所定の信号油圧を供給する電動
式オイルポンプを設けるとともに、機関停止検出
時に上記オイルポンプを所定時間駆動させる制御
手段を設けたことを特徴とする内燃機間の圧縮比
可変装置。 An inner piston connected to a connecting rod via a piston pin, an outer piston slidably fitted to the outside of the inner piston, and a space between the back surface of the crown of the outer piston and the top surface of the inner piston. an upper liquid chamber which is formed and to which oil is supplied via a check valve; a cylinder portion formed inside the piston pin; It comprises a spool valve that slides when the hydraulic pressure in a separate hydraulic fluid chamber reaches a predetermined pressure, and a discharge passage that opens when the spool valve slides and discharges oil from the upper fluid chamber. In a compression ratio variable device for an internal combustion engine in which a compression ratio variable mechanism is disposed in each cylinder,
A variable compression ratio device for an internal combustion engine, characterized in that an electric oil pump for supplying a predetermined signal oil pressure into the hydraulic fluid chamber is provided, and a control means for driving the oil pump for a predetermined period of time when an engine stop is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987158444U JPH0163740U (en) | 1987-10-16 | 1987-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987158444U JPH0163740U (en) | 1987-10-16 | 1987-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0163740U true JPH0163740U (en) | 1989-04-24 |
Family
ID=31438780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987158444U Pending JPH0163740U (en) | 1987-10-16 | 1987-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0163740U (en) |
-
1987
- 1987-10-16 JP JP1987158444U patent/JPH0163740U/ja active Pending