JPH0226740U - - Google Patents
Info
- Publication number
- JPH0226740U JPH0226740U JP1988103276U JP10327688U JPH0226740U JP H0226740 U JPH0226740 U JP H0226740U JP 1988103276 U JP1988103276 U JP 1988103276U JP 10327688 U JP10327688 U JP 10327688U JP H0226740 U JPH0226740 U JP H0226740U
- Authority
- JP
- Japan
- Prior art keywords
- eccentric bearing
- compression ratio
- variable compression
- piston pin
- ratio mechanism
- 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 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/06—Adjustable connecting-rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
- F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/10—Bearings, parts of which are eccentrically adjustable with respect to each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/04—Connecting-rod bearings; Attachments thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/22—Internal combustion engines
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案の第１実施例に係る可変圧縮比
機構における偏心ベアリングの逆転防止装置の断
面図、第２図は第１図の側面図、第３図は本考案
の第２実施例に係る可変圧縮比機構における偏心
ベアリングの逆転防止装置の断面図、第４図は第
３図の側面図、第５図は本考案の第３実施例に係
る可変圧縮比機構における偏心ベアリングの逆転
防止装置の要部断面図、第６図は本考案の第４実
施例に係る可変圧縮比機構における偏心ベアリン
グの逆転防止装置の要部断面図、第７図は本考案
の第５実施例に係る可変圧縮比機構における偏心
ベアリングの逆転防止装置の要部断面図、第８図
は従来の可変圧縮比機構の断面図、第９図は第８
図の―線に沿う断面図、である。
２０……コネクテイングロツド、２１……ピス
トンピン、２３……偏心ベアリング、２７……ロ
ツクピン、３１，４１，５１，６１，７１……ワ
ンウエイ機構。
Fig. 1 is a cross-sectional view of an eccentric bearing anti-reverse device in a variable compression ratio mechanism according to a first embodiment of the present invention, Fig. 2 is a side view of Fig. 1, and Fig. 3 is a second embodiment of the present invention. FIG. 4 is a side view of FIG. 3, and FIG. 5 is a cross-sectional view of a reversal prevention device for an eccentric bearing in a variable compression ratio mechanism according to a third embodiment of the present invention. FIG. 6 is a cross-sectional view of a main part of a prevention device for preventing reverse rotation of an eccentric bearing in a variable compression ratio mechanism according to a fourth embodiment of the present invention, and FIG. FIG. 8 is a cross-sectional view of a main part of a reverse rotation prevention device for an eccentric bearing in such a variable compression ratio mechanism, FIG. 8 is a cross-sectional view of a conventional variable compression ratio mechanism, and FIG.
FIG. 20... Connecting rod, 21... Piston pin, 23... Eccentric bearing, 27... Lock pin, 31, 41, 51, 61, 71... One-way mechanism.
Claims (1)
偏心ベアリングを回転可能に介装し、前記偏心ベ
アリングの動きをロツクピンを用いて固定、解除
して圧縮比を可変とする内燃機関の可変圧縮比機
構において、前記ピストンピンの外周に、クラン
クシヤフトの回転方向と同一方向のみに偏心ベア
リングの回転を許すワンウエイ機構を設けたこと
を特徴とする可変圧縮比機構における偏心ベアリ
ングの逆転防止装置。 A variable compression ratio mechanism for an internal combustion engine, in which an eccentric bearing is rotatably interposed between a piston pin and a connecting rod, and the compression ratio is varied by fixing and releasing the movement of the eccentric bearing using a lock pin, A reversal prevention device for an eccentric bearing in a variable compression ratio mechanism, characterized in that a one-way mechanism is provided on the outer periphery of the piston pin to allow the eccentric bearing to rotate only in the same direction as the rotational direction of the crankshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988103276U JPH0226740U (en) | 1988-08-05 | 1988-08-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988103276U JPH0226740U (en) | 1988-08-05 | 1988-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0226740U true JPH0226740U (en) | 1990-02-21 |
Family
ID=31333958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988103276U Pending JPH0226740U (en) | 1988-08-05 | 1988-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226740U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013160535A1 (en) * | 2012-04-25 | 2013-10-31 | Wärtsilä Finland Oy | A piston pin assembly |
| WO2017127594A1 (en) * | 2016-01-21 | 2017-07-27 | Federal-Mogul Corporation | Variable compression ratio connecting rod |
-
1988
- 1988-08-05 JP JP1988103276U patent/JPH0226740U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013160535A1 (en) * | 2012-04-25 | 2013-10-31 | Wärtsilä Finland Oy | A piston pin assembly |
| WO2017127594A1 (en) * | 2016-01-21 | 2017-07-27 | Federal-Mogul Corporation | Variable compression ratio connecting rod |
| US10247093B2 (en) | 2016-01-21 | 2019-04-02 | Tenneco Inc. | Variable compression ratio connecting rod |