JPS63191252U - - Google Patents
Info
- Publication number
- JPS63191252U JPS63191252U JP8431687U JP8431687U JPS63191252U JP S63191252 U JPS63191252 U JP S63191252U JP 8431687 U JP8431687 U JP 8431687U JP 8431687 U JP8431687 U JP 8431687U JP S63191252 U JPS63191252 U JP S63191252U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- liquid chamber
- axial direction
- inner piston
- valve
- 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
- 239000007788 liquid Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１図はこの考案の一実施例を示す全体構成図
、第２図はこの実施例の低圧縮比状態を示す全体
構成図、第３図はスプール弁の他例を示す縦断面
図、第４図は燃焼圧力を受けた一般のピストンを
示す断面図、第５図は従来の圧縮比可変装置を示
す全体構成図、第６図は従来装置の低圧縮比状態
を示す断面図である。
１……アウタピストン、１ｂ……冠部下面、３
……ピストンピン、４……コンロツド、５……作
動液室、６……スプール弁、６ｂ……第１弁体、
６ｃ……第２弁体、９……インナピストン、９ｂ
……上面、１１……上部液室、１３……油圧回路
、３１……軸部、３２，３３……ボールジヨイン
ト、４０……連結部材。
FIG. 1 is an overall configuration diagram showing one embodiment of this invention, FIG. 2 is an overall configuration diagram showing a low compression ratio state of this embodiment, FIG. 3 is a vertical sectional view showing another example of the spool valve, and FIG. FIG. 4 is a sectional view showing a general piston receiving combustion pressure, FIG. 5 is an overall configuration diagram showing a conventional variable compression ratio device, and FIG. 6 is a sectional view showing the conventional device in a low compression ratio state. 1...Outer piston, 1b...Lower surface of crown, 3
... Piston pin, 4 ... Conrod, 5 ... Working fluid chamber, 6 ... Spool valve, 6b ... First valve body,
6c...Second valve body, 9...Inner piston, 9b
... Upper surface, 11 ... Upper liquid chamber, 13 ... Hydraulic circuit, 31 ... Shaft portion, 32, 33 ... Ball joint, 40 ... Connection member.
Claims (1)
に支持されたインナピストンと、該インナピスト
ンの外周に軸方向へ摺動可能に被嵌したアウタピ
ストンと、該アウタピストンの冠部下面と上記イ
ンナピストンの上面との間に形成された上部液室
と、該上部液室に上記ピストンピンの内部軸方向
に沿つて形成された作動液室を介して作動油を給
排する油圧回路と、上記作動液室内に摺動自在に
収納され、かつ機関運転状態に応じて上記油圧回
路を複数の弁体を介して切替えるスプール弁とを
備え、更に上記スプール弁の各弁体を連結する軸
部を折曲自在に形成したことを特徴とする内燃機
関の圧縮比可変装置。 An inner piston supported by both ends of a piston pin connected to a connecting rod, an outer piston fitted on the outer periphery of the inner piston so as to be slidable in the axial direction, and a lower surface of the crown of the outer piston and an inner piston. an upper liquid chamber formed between the upper surface and the upper surface; a hydraulic circuit that supplies and discharges hydraulic oil to and from the upper liquid chamber through a hydraulic liquid chamber formed along the internal axial direction of the piston pin; and a spool valve that is slidably housed in the room and switches the hydraulic circuit through a plurality of valve bodies depending on the engine operating state, and further has a bendable shaft portion that connects each valve body of the spool valve. A compression ratio variable device for an internal combustion engine characterized by being freely formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8431687U JPS63191252U (en) | 1987-05-29 | 1987-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8431687U JPS63191252U (en) | 1987-05-29 | 1987-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63191252U true JPS63191252U (en) | 1988-12-09 |
Family
ID=30938708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8431687U Pending JPS63191252U (en) | 1987-05-29 | 1987-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63191252U (en) |
-
1987
- 1987-05-29 JP JP8431687U patent/JPS63191252U/ja active Pending