JPS6254245U - - Google Patents
Info
- Publication number
- JPS6254245U JPS6254245U JP7632485U JP7632485U JPS6254245U JP S6254245 U JPS6254245 U JP S6254245U JP 7632485 U JP7632485 U JP 7632485U JP 7632485 U JP7632485 U JP 7632485U JP S6254245 U JPS6254245 U JP S6254245U
- Authority
- JP
- Japan
- Prior art keywords
- eccentric
- connecting rod
- piston pin
- piston
- eccentric bush
- 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 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
第１図は本考案の一実施例に係る圧縮比可変機
構のニードルローラ付偏心ブツシユ近傍の断面図
、第２図は第１図と直角方向の断面図、第３図は
第１図の偏心ブツシユ回転機構の油圧系統の断面
図、第４図は第３図とは直角方向の断面図、第５
図は高、低圧縮比切換のための油圧装置の系統図
、第６図は第１図の機構を適用したときのピスト
ン軌跡図、である。
１……シリンダ、２……ピストン、３……コネ
クテイングロツド、４……ピストンピン、５……
ピストンピン挿通孔、６……偏心ブツシユ、７…
…ニードルローラ、８……ガイド、９……ロツク
ピン収納穴、１０……ロツクピン、１１……ロツ
クピン係合孔、１２……ロツクピンロツク用油圧
通路、１３……ロツクピンアンロツク用油圧通路
、１４……ロツクピンガイド溝、１５，１６，１
９，２０……油溝、１７……クランクシヤフト、
１８……油通路、２１……高圧縮比用メインオイ
ル通路、２２……低圧縮比用メインオイル通路、
２３……オイルパン、２４……潤滑油、２５……
オイルストレーナ、２６……リターンパイプ、２
７……オイルポンプ、２８……切換弁、２９……
バツテリ、３０……イグニツシヨンスイツチ、３
１……リレー、３２……インテークマニホルド、
３３……吸気負圧スイツチ、３４……ポンプ室、
３５……圧力スイツチ。
Fig. 1 is a sectional view of the vicinity of an eccentric bush with a needle roller of a variable compression ratio mechanism according to an embodiment of the present invention, Fig. 2 is a sectional view taken in a direction perpendicular to Fig. A cross-sectional view of the hydraulic system of the bush rotation mechanism, Figure 4 is a cross-sectional view at right angles to Figure 3, and Figure 5 is a cross-sectional view of the hydraulic system of the bush rotation mechanism.
The figure is a system diagram of a hydraulic system for switching between high and low compression ratios, and FIG. 6 is a piston locus diagram when the mechanism of FIG. 1 is applied. 1... Cylinder, 2... Piston, 3... Connecting rod, 4... Piston pin, 5...
Piston pin insertion hole, 6... Eccentric bush, 7...
...Needle roller, 8...Guide, 9...Lock pin storage hole, 10...Lock pin, 11...Lock pin engagement hole, 12...Hydraulic passage for lock pin locking, 13...Hydraulic passage for lock pin unlocking, 14... Lock pin guide groove, 15, 16, 1
9, 20...Oil groove, 17...Crankshaft,
18...Oil passage, 21...Main oil passage for high compression ratio, 22...Main oil passage for low compression ratio,
23...oil pan, 24...lubricating oil, 25...
Oil strainer, 26...Return pipe, 2
7...Oil pump, 28...Switching valve, 29...
Battery, 30...Ignition switch, 3
1...Relay, 32...Intake manifold,
33... Intake negative pressure switch, 34... Pump chamber,
35...Pressure switch.
Claims (1)
周とピストンピン外周との間に内周と外周が互に
偏心した偏心ブツシユを介在させ、偏心ブツシユ
の回転に合せてピストンのコネクテイングロツド
に対する相対位置を可変とさせた内燃機関の圧縮
比可変機構において、前記偏心ブツシユの外周と
コネクテイングロツドのピストンピン挿通孔内周
との間にニードルローラを介装したことを特徴と
する圧縮比可変機構のニードルローラ付偏心ブツ
シユ。 An eccentric bush whose inner and outer circumferences are eccentric from each other is interposed between the inner circumference of the piston pin insertion hole of the connecting rod and the outer circumference of the piston pin, and the relative position of the piston with respect to the connecting rod is adjusted as the eccentric bush rotates. A variable compression ratio mechanism for an internal combustion engine, characterized in that a needle roller is interposed between the outer periphery of the eccentric bush and the inner periphery of the piston pin insertion hole of the connecting rod. Eccentric bushing with needle roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7632485U JPS6254245U (en) | 1985-05-24 | 1985-05-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7632485U JPS6254245U (en) | 1985-05-24 | 1985-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6254245U true JPS6254245U (en) | 1987-04-03 |
Family
ID=30923294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7632485U Pending JPS6254245U (en) | 1985-05-24 | 1985-05-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6254245U (en) |
-
1985
- 1985-05-24 JP JP7632485U patent/JPS6254245U/ja active Pending