JPS63150047U - - Google Patents
Info
- Publication number
- JPS63150047U JPS63150047U JP4222987U JP4222987U JPS63150047U JP S63150047 U JPS63150047 U JP S63150047U JP 4222987 U JP4222987 U JP 4222987U JP 4222987 U JP4222987 U JP 4222987U JP S63150047 U JPS63150047 U JP S63150047U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- inner piston
- supply passage
- filter
- connecting rod
- 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
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案の実施例を示す断面図、第２図
、第３図、第４図はそれぞれ他の実施例を示す断
面図である。第５図は従来例を示す断面図である
。
１…ピストン本体、２…インナーピストン、２
ｂ…ドレン通路、３…ピストンピン、４…コンロ
ツド、５…第一の油室、６…供給通路、１１…フ
イルタ、１２…一方向弁、１３…制御弁。
FIG. 1 is a sectional view showing an embodiment of the present invention, and FIGS. 2, 3, and 4 are sectional views showing other embodiments. FIG. 5 is a sectional view showing a conventional example. 1... Piston body, 2... Inner piston, 2
b...Drain passage, 3...Piston pin, 4...Conrod, 5...First oil chamber, 6...Supply passage, 11...Filter, 12...One-way valve, 13...Control valve.
Claims (1)
ストンを設け、このインナーピストンをピストン
ピンを介してコンロツドに揺動自在に連結すると
ともに、ピストン本体の底面とインナーピストン
の頂面の間に油室を形成し、この油室に加圧オイ
ルを供給する供給通路をコンロツドとピストンピ
ンおよびインナーピストンを介して形成する内燃
機関の圧縮比可変装置において、前記インナーピ
ストンに形成される供給通路の途中にフイルタを
介装するとともに、このフイルタより下流側の供
給通路に一方向弁を介装し、フイルタより上流側
の供給通路にインナーピストンの背面に開口する
ドレン通路を接続し、このドレン通路の途中に所
定の開弁圧を有する制御弁を設けたことを特徴と
する内燃機関の圧縮比可変装置。 An inner piston that is slidably fitted into the piston body is provided, and this inner piston is swingably connected to the connecting rod via a piston pin, and an oil chamber is provided between the bottom surface of the piston body and the top surface of the inner piston. In a variable compression ratio device for an internal combustion engine, a supply passage for supplying pressurized oil to the oil chamber is formed via a connecting rod, a piston pin, and an inner piston. At the same time, a one-way valve is installed in the supply passage downstream of the filter, and a drain passage opening on the back side of the inner piston is connected to the supply passage upstream of the filter. 1. A variable compression ratio device for an internal combustion engine, comprising a control valve having a predetermined valve opening pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4222987U JPS63150047U (en) | 1987-03-23 | 1987-03-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4222987U JPS63150047U (en) | 1987-03-23 | 1987-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63150047U true JPS63150047U (en) | 1988-10-03 |
Family
ID=30857946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4222987U Pending JPS63150047U (en) | 1987-03-23 | 1987-03-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63150047U (en) |
-
1987
- 1987-03-23 JP JP4222987U patent/JPS63150047U/ja active Pending
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