JPH0482307U - - Google Patents
Info
- Publication number
- JPH0482307U JPH0482307U JP12547290U JP12547290U JPH0482307U JP H0482307 U JPH0482307 U JP H0482307U JP 12547290 U JP12547290 U JP 12547290U JP 12547290 U JP12547290 U JP 12547290U JP H0482307 U JPH0482307 U JP H0482307U
- Authority
- JP
- Japan
- Prior art keywords
- lost motion
- rocker arm
- oil
- tip
- piston
- 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
- 239000011435 rock Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
Description
第1図は本考案を適用した可変バルブタイミン
グ機構の一実施例を示す組立斜視図、第2図は第
1図の矢線−に沿う断面図、第3図は第1図
の可変バルブタイミング機構が組み込まれたシリ
ンダヘツドの平面図、第4図は第3図の矢線−
に沿う断面図、第5図は第3図の矢線−に
沿う断面図、第6図は第5図のロストモーシヨン
アセンブリの拡大図、第7図は第6図の要部拡大
図、第8図及び第9図は従来の可変バルブタイミ
ング機構の要部断面図である。
1……可変バルブタイミング機構、2,3……
排気バルブ、4,4′……ロツカシヤフト、4a
,4′a……油路、4b,4′b,6b,7b…
…ピストン孔、5……T型ロツカアーム、6……
低速用ロツカアーム、7……高速用ロツカアーム
、8,9……ピストン、10,11……ローラベ
アリング、13……カムシヤフト、14……低速
用カム、15……高速用カム、25……ロストモ
ーシヨンアセンブリ、26……ロストモーシヨン
シリンダ、27……ロストモーシヨンピストン、
33……シリンダヘツド、34……カムシヤフト
ホルダ、35……カムキヤツプ、36……ロツカ
シヤフトキヤツプ。
Fig. 1 is an assembled perspective view showing an embodiment of a variable valve timing mechanism to which the present invention is applied, Fig. 2 is a sectional view taken along the arrow line - in Fig. 1, and Fig. 3 is a variable valve timing diagram of Fig. 1. A plan view of the cylinder head with the built-in mechanism, Figure 4 is along the arrow line in Figure 3.
5 is a sectional view along the arrow line - in FIG. 3, FIG. 6 is an enlarged view of the lost motion assembly in FIG. 5, FIG. 7 is an enlarged view of the main part of FIG. 6, FIGS. 8 and 9 are sectional views of essential parts of a conventional variable valve timing mechanism. 1... Variable valve timing mechanism, 2, 3...
Exhaust valve, 4, 4'...Rock shaft, 4a
, 4'a... oil path, 4b, 4'b, 6b, 7b...
...Piston hole, 5...T type rocker arm, 6...
Low speed rocker arm, 7...High speed rocker arm, 8,9...Piston, 10,11...Roller bearing, 13...Camshaft, 14...Low speed cam, 15...High speed cam, 25...Lost motor sion assembly, 26...lost motion cylinder, 27...lost motion piston,
33...Cylinder head, 34...Camshaft holder, 35...Cam cap, 36...Rock shaft cap.
Claims (1)
トの周りを揺動するロツカアームとを結合又は解
除する可変バルブタイミング機構の前記ロツカア
ームがバルブと連動しない時に当該ロツカアーム
をカムに押し付けるロストモーシヨンアセンブリ
を、前記ロツカアームの上方に配設してロストモ
ーシヨンピストンの先端を当該ロツカアームの当
接部位に上方から圧接させると共に、前記ロスト
モーシヨンアセンブリの装着部にオイルを供給す
るオイル通路を設け、前記ロストモーシヨンアセ
ンブリには前記オイルをロストモーシヨンシリン
ダとロストモーシヨンピストンとの摺動部に供給
する油路を設け、且つロストモーシヨンピストン
の先端に流下せるオイルを当該先端と前記ロツカ
アームとの摺動部に供給することを特徴とする可
変バルブタイミング機構。 A lost motion assembly is disposed above the rocker arm to press the rocker arm against the cam when the rocker arm of the variable valve timing mechanism is not interlocked with the valve and connects or disconnects the rocker shaft and the rocker arm that swings around the rocker shaft using hydraulic pressure. The tip of the lost motion piston is brought into pressure contact with the abutting portion of the rocker arm from above, and an oil passage is provided for supplying oil to the mounting portion of the lost motion assembly, and the lost motion assembly is supplied with the oil. An oil passage is provided to supply oil to a sliding part between the lost motion cylinder and the lost motion piston, and oil that can flow down to the tip of the lost motion piston is supplied to a sliding part between the tip and the rocker arm. Features a variable valve timing mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12547290U JPH0482307U (en) | 1990-11-27 | 1990-11-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12547290U JPH0482307U (en) | 1990-11-27 | 1990-11-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0482307U true JPH0482307U (en) | 1992-07-17 |
Family
ID=31873068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12547290U Pending JPH0482307U (en) | 1990-11-27 | 1990-11-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0482307U (en) |
-
1990
- 1990-11-27 JP JP12547290U patent/JPH0482307U/ja active Pending
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