JPS63108537U - - Google Patents
Info
- Publication number
- JPS63108537U JPS63108537U JP79587U JP79587U JPS63108537U JP S63108537 U JPS63108537 U JP S63108537U JP 79587 U JP79587 U JP 79587U JP 79587 U JP79587 U JP 79587U JP S63108537 U JPS63108537 U JP S63108537U
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- piston
- stopper
- inner piston
- supply passage
- 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
- 230000002093 peripheral effect Effects 0.000 claims 3
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 1
Landscapes
- 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
は圧力調整弁の断面図、第３図は弁体の平面図、
第４図は同じく側面図、第５図はストツパの断面
図である。第６図、第７図はそれぞれ他の実施例
を示す断面図である。第８図は従来例を示す断面
図である。
１……ピストン本体、２……インナピストン、
３……ピストンピン、４……コンロツド、５……
油室、９……ストツパ、１０……供給通路、１１
，１２……凹部、１５……チエツク弁、１６……
圧力調整弁、３１……突出部、３２……仕切り部
、３６……受圧室、３７……背圧室、３９……絞
り孔、４０……連通孔。
Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a sectional view of the pressure regulating valve, Fig. 3 is a plan view of the valve body,
FIG. 4 is a side view, and FIG. 5 is a sectional view of the stopper. FIGS. 6 and 7 are sectional views showing other embodiments, respectively. FIG. 8 is a sectional view showing a conventional example. 1... Piston body, 2... Inner piston,
3...Piston pin, 4...Conrod, 5...
Oil chamber, 9... Stopper, 10... Supply passage, 11
, 12... recess, 15... check valve, 16...
Pressure regulating valve, 31...protrusion, 32...partition, 36...pressure receiving chamber, 37...back pressure chamber, 39...throttle hole, 40...communication hole.
Claims (1)
トンを設け、このインナ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ピストンの頂面
の間に油室を形成し、この油室に運転条件に応じ
て加圧オイルを導く供給通路を配設し、この供給
通路の途中にチエツク弁と、このチエツク弁の上
流側に所定の圧力以上で閉弁する圧力調整弁をそ
れぞれ設ける一方、インナピストンの外周面に開
口するシリンダ部に摺動自在に嵌合するストツパ
を設け、シリンダ部にこのストツパより外側に受
圧室を内側に背圧室をそれぞれ形成し、この受圧
室に前記供給通路を接続し、受圧室と背圧室を互
いに結ぶ絞り孔と、背圧室とクランク室を結ぶ通
孔をそれぞれ形成し、ストツパをインナピストン
の外周面から突出する方向に付勢するスプリング
を設け、ピストン本体の内周面にストツパの突出
端を嵌挿させる凹部を所定の位置に形成したこと
を特徴とする内燃機関の圧縮比可変装置。 An inner piston 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. A supply passage is provided in this oil chamber to guide pressurized oil according to the operating conditions, and a check valve is installed in the middle of this supply passage, and a pressure valve that closes when the pressure exceeds a predetermined value is installed on the upstream side of the check valve. Each of the control valves is provided with a stopper that slidably fits into a cylinder portion opening on the outer peripheral surface of the inner piston, and a pressure receiving chamber is formed in the cylinder portion on the outside of the stopper, and a back pressure chamber is formed on the inside of the cylinder portion. The supply passage is connected to this pressure receiving chamber, and a throttle hole connecting the pressure receiving chamber and the back pressure chamber to each other and a through hole connecting the back pressure chamber and the crank chamber are respectively formed, and the stopper is directed in a direction protruding from the outer peripheral surface of the inner piston. 1. A variable compression ratio device for an internal combustion engine, characterized in that a spring is provided to bias the piston body, and a recess is formed at a predetermined position on the inner peripheral surface of the piston body into which the protruding end of the stopper is inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP79587U JPS63108537U (en) | 1987-01-07 | 1987-01-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP79587U JPS63108537U (en) | 1987-01-07 | 1987-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63108537U true JPS63108537U (en) | 1988-07-13 |
Family
ID=30778099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP79587U Pending JPS63108537U (en) | 1987-01-07 | 1987-01-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63108537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004007932A1 (en) * | 2002-07-12 | 2004-01-22 | Honda Giken Kogyo Kabushiki Kaisha | Compression ratio variable device of internal combustion engine |
-
1987
- 1987-01-07 JP JP79587U patent/JPS63108537U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004007932A1 (en) * | 2002-07-12 | 2004-01-22 | Honda Giken Kogyo Kabushiki Kaisha | Compression ratio variable device of internal combustion engine |
| EP1533498A1 (en) * | 2002-07-12 | 2005-05-25 | Honda Giken Kogyo Kabushiki Kaisha | Compression ratio variable device of internal combustion engine |
| EP1533498A4 (en) * | 2002-07-12 | 2009-04-08 | Honda Motor Co Ltd | Compression ratio variable device of internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63108537U (en) | ||
| JPH0337219U (en) | ||
| JPS63150047U (en) | ||
| JPH0220783U (en) | ||
| JPH02105504U (en) | ||
| JPS63187781U (en) | ||
| JPS62101013U (en) | ||
| JPH0212063U (en) | ||
| JPH0484772U (en) | ||
| JPS63162902U (en) | ||
| JPS62167977U (en) | ||
| JPS6360037U (en) | ||
| JPS6361557U (en) | ||
| JPS6141806U (en) | Hydraulic valve clearance correction device | |
| JPH0231310U (en) | ||
| JPS60134801U (en) | Hydraulic valve gap adjustment device for internal combustion engines | |
| JPS6158603U (en) | ||
| JPH0446271U (en) | ||
| JPH0417106U (en) | ||
| JPH0287939U (en) | ||
| JPS6165250U (en) | ||
| JPS6378106U (en) | ||
| JPS63112207U (en) | ||
| JPH03102661U (en) | ||
| JPS63158509U (en) |