JPS62169236U - - Google Patents
Info
- Publication number
- JPS62169236U JPS62169236U JP5682286U JP5682286U JPS62169236U JP S62169236 U JPS62169236 U JP S62169236U JP 5682286 U JP5682286 U JP 5682286U JP 5682286 U JP5682286 U JP 5682286U JP S62169236 U JPS62169236 U JP S62169236U
- Authority
- JP
- Japan
- Prior art keywords
- lock pin
- hydraulic passage
- compression ratio
- valve
- engine
- 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 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000005461 lubrication Methods 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案の一実施例に係る可変圧縮比機
構のロツクピン油圧制御装置の系統図、第２図は
従来の偏心ベアリングタイプの可変圧縮比機構の
断面図、第３図は第２図の―線に沿う断面図
、４図は従来の可変圧縮比機構のロツクピン油圧
制御装置の一例を示した系統図、第５図は従来の
可変圧縮比機構のロツクピン油圧制御装置の別の
例を示した系統図、である。
４０……オイルパン、４１……オイル、４２…
…オイルポンプ、４４……ロツクピン駆動用油圧
通路、４５……エンジン潤滑用油圧通路、４６…
…切換弁、４７，４８……通路、４９……遮断弁
としての電磁弁、５３……第１のリリーフバルブ
、５４……第２のリリーフバルブ。
Fig. 1 is a system diagram of a lock pin hydraulic control device for a variable compression ratio mechanism according to an embodiment of the present invention, Fig. 2 is a sectional view of a conventional eccentric bearing type variable compression ratio mechanism, and Fig. 3 is a schematic diagram of a variable compression ratio mechanism of the present invention. Figure 4 is a system diagram showing an example of a lock pin hydraulic control device for a conventional variable compression ratio mechanism, and Figure 5 is another example of a lock pin hydraulic control device for a conventional variable compression ratio mechanism. This is the system diagram shown. 40...oil pan, 41...oil, 42...
...Oil pump, 44...Hydraulic passage for lock pin drive, 45...Hydraulic passage for engine lubrication, 46...
...Switching valve, 47, 48...Passway, 49...Solenoid valve as a shutoff valve, 53...First relief valve, 54...Second relief valve.
Claims (1)
回転可能に偏心ベアリングを介装して該偏心ベア
リングの回転に合せて圧縮比を可変とし、偏心ベ
アリングにロツクピン係合孔を設けるとともに、
コネクテイングロツド側にロツクピン係合孔に出
入りするロツクピンを設け、該ロツクピンの駆動
用油圧通路に切換弁を設けて該切換弁を切換える
ことによりロツクピンをロツクピン係合孔に係合
または離脱させ偏心ベアリングの回転をロツクま
たはロツク解除させるようにした可変圧縮比機構
のロツクピン油圧制御装置において、前記ロツク
ピン駆動用油圧通路とエンジンの各潤滑部にオイ
ルを供給するエンジン潤滑用油圧通路とをオイル
ポンプに並列に接続し、前記エンジン潤滑用油圧
通路に、圧縮比切換時にエンジン潤滑用油圧通路
を遮断して前記ロツクピン駆動用油圧通路の油圧
を上げる遮断弁を配設し、該遮断弁の上流にロツ
クピンの駆動圧力を設定する第１のリリーフバル
ブを設け、前記遮断弁の下流にエンジン潤滑部へ
供給されるオイルの供給圧力を設定する第２のリ
リーフバルブを設けたことを特徴とする可変圧縮
比機構のロツクピン油圧制御装置。 An eccentric bearing is rotatably interposed between the piston pin and the connecting rod, the compression ratio is made variable according to the rotation of the eccentric bearing, and a lock pin engagement hole is provided in the eccentric bearing,
A lock pin that goes in and out of the lock pin engagement hole is provided on the connecting rod side, and a switching valve is provided in the hydraulic passage for driving the lock pin, and by switching the switching valve, the lock pin is engaged with or disengaged from the lock pin engagement hole to prevent eccentricity. In a lock pin hydraulic control device for a variable compression ratio mechanism that locks or unlocks the rotation of a bearing, the lock pin driving hydraulic passage and the engine lubrication hydraulic passage supplying oil to each lubricating part of the engine are connected to an oil pump. A cutoff valve is connected in parallel to the engine lubrication hydraulic passage and increases the oil pressure of the lock pin drive hydraulic passage by blocking the engine lubrication hydraulic passage when the compression ratio is changed, and a lock pin is provided upstream of the cutoff valve. A variable compression ratio characterized in that a first relief valve is provided to set the driving pressure of the cutoff valve, and a second relief valve is provided downstream of the cutoff valve to set the supply pressure of oil supplied to the engine lubricating section. Mechanism lock pin hydraulic control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5682286U JPS62169236U (en) | 1986-04-17 | 1986-04-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5682286U JPS62169236U (en) | 1986-04-17 | 1986-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62169236U true JPS62169236U (en) | 1987-10-27 |
Family
ID=30885980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5682286U Pending JPS62169236U (en) | 1986-04-17 | 1986-04-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62169236U (en) |
-
1986
- 1986-04-17 JP JP5682286U patent/JPS62169236U/ja active Pending
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