JPH0476904U

JPH0476904U -

Info

Publication number: JPH0476904U
Application number: JP11950390U
Authority: JP
Priority date: 1990-11-15
Filing date: 1990-11-15
Publication date: 1992-07-06

Description

[Brief explanation of drawings]

第１図は本考案に係る可変バルブタイミング機
構のロストモーシヨンアセンブリを適用した可変
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２図の矢線−に沿う断面図、第４
図は第３図のロストモーシヨンアセンブリの拡大
図、第５図は第３図のロストモーシヨンアセンブ
リを解除した状態を示す図、第６図は従来のロス
トモーシヨンアセンブリを適用した可変バルブタ
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……
吸気バルブ、６……低速用ロツカアーム、７……
高速用ロツカアーム、６ｂ，７ｂ……ピストン孔
、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……シリンダ、２７…
…ピストン、２８……ロストモーシヨンスプリン
グ、５０……シリンダヘツド、５１……隙間ゲー
ジ、５２……ピストン引き上げ治具。 1 is an assembled perspective view showing an embodiment of a variable valve timing mechanism to which a lost motion assembly of a variable valve timing mechanism according to the present invention is applied; FIG. 2 is a sectional view taken along the arrow line - in FIG. 1;
Figure 3 is a sectional view taken along the arrow line - in Figure 2;
The figure is an enlarged view of the lost motion assembly in Figure 3, Figure 5 is a diagram showing the lost motion assembly in Figure 3 in a released state, and Figure 6 is a variable valve timing using the conventional lost motion assembly. FIG. 3 is a sectional view of main parts of the mechanism. 1... Variable valve timing mechanism, 2, 3...
Intake valve, 6...Low speed lock arm, 7...
High speed rocker arm, 6b, 7b... Piston hole, 8, 9... Piston, 10, 11... Roller bearing, 13... Camshaft, 14... Low speed cam, 15... High speed cam, 25... Lost Motion assembly, 26...Cylinder, 27...
... Piston, 28 ... Lost motion spring, 50 ... Cylinder head, 51 ... Feeler gauge, 52 ... Piston lifting jig.

Claims

[Scope of utility model registration request]

A lost motion assembly of a variable valve timing mechanism that connects or disengages a rocker shaft and a rocker arm that swings around the rocker shaft using hydraulic pressure depending on the operating state of the engine, and that presses the rocker arm against the cam when the rocker arm is not interlocked with the valve. A lost motion assembly of a variable valve timing mechanism, characterized in that a piston that presses the rocker arm of the lost motion assembly is provided with a threaded hole through which a piston lifting jig can be attached and detached. .