JPS5825637U - Variable compression ratio mechanism for internal combustion engines - Google Patents
Variable compression ratio mechanism for internal combustion enginesInfo
- Publication number
- JPS5825637U JPS5825637U JP12009281U JP12009281U JPS5825637U JP S5825637 U JPS5825637 U JP S5825637U JP 12009281 U JP12009281 U JP 12009281U JP 12009281 U JP12009281 U JP 12009281U JP S5825637 U JPS5825637 U JP S5825637U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- shell
- pressure
- oil
- chamber
- 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
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の内燃機関の可変圧縮比機構に係る第１
実施例の油圧回路も併せて示したピストン部分の断面図
、第２図は第１図の切替弁近傍の高圧時の部分断面図、
ｓ３図は第１図の切替弁近傍の低圧時の部分断面図、第
４図は本考案の第２実施例に係る断面図、である。
１・・・・・・ピストンシェル、２・・・・・・スカー
ト部、３・・・・・・ピストンコア、６・・・・・・シ
ェル油室、７・・・・・・スカート油室、８・・・・・
・流通路、９ａ、−９ｂ・・・・・・チェ７ツクボール
、１０ａ、 １０ｂ・・・・・・スプリング、１１・
・・・・・切替弁、１１ａ・・・・・・スプリング、１
５・・・・・・加圧装置、１７ａ、１７ｂ・・・・・・
センサ、１８・・・・・・コンピュータ。 ゛Figure 1 shows the first diagram of the variable compression ratio mechanism for an internal combustion engine according to the present invention.
A sectional view of the piston part also showing the hydraulic circuit of the example, FIG. 2 is a partial sectional view of the area near the switching valve in FIG. 1 at high pressure,
Figure s3 is a partial cross-sectional view of the vicinity of the switching valve in Figure 1 at low pressure, and Figure 4 is a cross-sectional view of the second embodiment of the present invention. 1...Piston shell, 2...Skirt portion, 3...Piston core, 6...Shell oil chamber, 7...Skirt oil Room 8...
・Flow passage, 9a, -9b... Check ball, 10a, 10b... Spring, 11.
...Switching valve, 11a...Spring, 1
5... Pressure device, 17a, 17b...
Sensor, 18... Computer.゛
Claims (1)
ストンシェルに固定されたスカート部、ピストンシェル
およびスカート部内に挿入されピストンピンまたはシリ
ンダヘッドの何れかに固定されたピストンコアとから構
成し、ピストンシェルおよびスカート部をピストンコア
外周に軸方向にスライド可能とするとともに、ピストン
コアとピストンシェルの間にシェル油室を、ピストンコ
アとスカート部との間にスカート油室を形成し、シェル
油室とスカート油室への圧油の供給回路に内燃機関の運
転条件に合せて圧油の圧力を変える加圧装置を設けると
ともに、圧油の圧力が大になったときに圧油をシェル油
室に導入する逆止弁と圧油の圧力が下がったときにシェ
ル油室の圧油を、 スカート室に流入させる切替弁を
設けたことを特徴・とする内燃機関の可変圧縮比機構。A piston is composed of a piston shell forming an outer wall of the piston, a skirt portion fixed to the piston shell, and a piston core inserted into the piston shell and skirt portion and fixed to either a piston pin or a cylinder head. A shell oil chamber is formed between the piston core and the piston shell, a skirt oil chamber is formed between the piston core and the skirt portion, and a shell oil chamber and skirt oil chamber are formed between the piston core and the piston shell. A pressurizing device is installed in the pressure oil supply circuit to the chamber to change the pressure of the pressure oil according to the operating conditions of the internal combustion engine, and when the pressure of the pressure oil becomes high, pressure oil is introduced into the shell oil chamber. A variable compression ratio mechanism for an internal combustion engine, which is equipped with a check valve and a switching valve that causes pressure oil in the shell oil chamber to flow into the skirt chamber when the pressure of the pressure oil decreases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12009281U JPS5825637U (en) | 1981-08-14 | 1981-08-14 | Variable compression ratio mechanism for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12009281U JPS5825637U (en) | 1981-08-14 | 1981-08-14 | Variable compression ratio mechanism for internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5825637U true JPS5825637U (en) | 1983-02-18 |
| JPH0110419Y2 JPH0110419Y2 (en) | 1989-03-24 |
Family
ID=29914130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12009281U Granted JPS5825637U (en) | 1981-08-14 | 1981-08-14 | Variable compression ratio mechanism for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5825637U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6147568U (en) * | 1984-08-31 | 1986-03-29 | シャープ株式会社 | Television receiver adjuster mounting device |
| JPS6147569U (en) * | 1984-08-31 | 1986-03-29 | シャープ株式会社 | Television receiver adjuster mounting device |
| JPS6162482U (en) * | 1984-09-27 | 1986-04-26 | ||
| JPS6162481U (en) * | 1984-09-27 | 1986-04-26 | ||
| JPS63191251U (en) * | 1987-05-29 | 1988-12-09 | ||
| JPH01262349A (en) * | 1988-03-05 | 1989-10-19 | Daimler Benz Ag | Compression apex variable type piston |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53131323A (en) * | 1977-04-21 | 1978-11-16 | Kubota Ltd | Compression-ratio variable device for internal combuston engine with supercharger |
| JPS5431820A (en) * | 1977-08-12 | 1979-03-08 | Nissan Motor Co Ltd | Variable compression ratio type internal combustion engine |
| JPS5495817A (en) * | 1978-01-12 | 1979-07-28 | Nissan Motor Co Ltd | Variable squish piston |
-
1981
- 1981-08-14 JP JP12009281U patent/JPS5825637U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53131323A (en) * | 1977-04-21 | 1978-11-16 | Kubota Ltd | Compression-ratio variable device for internal combuston engine with supercharger |
| JPS5431820A (en) * | 1977-08-12 | 1979-03-08 | Nissan Motor Co Ltd | Variable compression ratio type internal combustion engine |
| JPS5495817A (en) * | 1978-01-12 | 1979-07-28 | Nissan Motor Co Ltd | Variable squish piston |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6147568U (en) * | 1984-08-31 | 1986-03-29 | シャープ株式会社 | Television receiver adjuster mounting device |
| JPS6147569U (en) * | 1984-08-31 | 1986-03-29 | シャープ株式会社 | Television receiver adjuster mounting device |
| JPH0336140Y2 (en) * | 1984-08-31 | 1991-07-31 | ||
| JPS6162482U (en) * | 1984-09-27 | 1986-04-26 | ||
| JPS6162481U (en) * | 1984-09-27 | 1986-04-26 | ||
| JPS63191251U (en) * | 1987-05-29 | 1988-12-09 | ||
| JPH01262349A (en) * | 1988-03-05 | 1989-10-19 | Daimler Benz Ag | Compression apex variable type piston |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0110419Y2 (en) | 1989-03-24 |
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