JPH0224007U

JPH0224007U -

Info

Publication number: JPH0224007U
Application number: JP10210488U
Authority: JP
Priority date: 1988-08-01
Filing date: 1988-08-01
Publication date: 1990-02-16

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示すもので、第１図
は内燃機関の要部縦断面図であつて第２図の―
線断面図、第２図は第１図の―線矢視図、
第３図は第２図の―線断面図、第４図は第１
図の―線断面図、第５図は第２図の―線
断面図、第６図は連結切換機構を示すための横断
面図、第７図は給油系統を示す図、第８図は第２
図の―線矢視図、第９図は第８図の―線
断面図、第１０図は第８図の―線に沿う切換
弁閉弁時の拡大断面図、第１１図は第２図の
―線断面図、第１２図は切換弁開弁時の第１
０図に対応した断面図である。１……シリンダブロツク、２……シリンダ、３
……シリンダヘツド、１０ｉ……機関弁としての
吸気弁、１０ｅ……機関弁としての排気弁、１７
ｉ，１７ｅ……動弁装置、２２ｉ，２２ｅ……ロ
ツカシヤフト、２３ｉ，２３ｅ，２４ｉ，２４ｅ
，２５ｉ，２５ｅ……ロツカアーム、２６ｉ，２
６ｅ……油圧式連結切換機構、５８ｉ，５８ｅ…
…給油路。 The drawings show one embodiment of the present invention, and FIG. 1 is a vertical sectional view of the main part of an internal combustion engine, and FIG.
Line sectional view, Figure 2 is a - line arrow view of Figure 1,
Figure 3 is a cross-sectional view taken along the line - in Figure 2, and Figure 4 is a cross-sectional view of Figure 1.
Figure 5 is a cross-sectional view taken along the line - in Figure 2, Figure 6 is a cross-sectional view showing the connection switching mechanism, Figure 7 is a diagram showing the oil supply system, and Figure 8 is a cross-sectional view taken along the line - in Figure 2. 2
Figure 9 is a sectional view taken along the line - in Figure 8, Figure 10 is an enlarged sectional view taken along the line - in Figure 8 when the switching valve is closed, and Figure 11 is the view in Figure 2. Figure 12 is a cross-sectional view of
FIG. 2 is a sectional view corresponding to FIG. 1...Cylinder block, 2...Cylinder, 3
...Cylinder head, 10i...Intake valve as engine valve, 10e...Exhaust valve as engine valve, 17
i, 17e...Valve train, 22i, 22e...Rock shaft, 23i, 23e, 24i, 24e
, 25i, 25e...Rotsuka arm, 26i, 2
6e...Hydraulic connection switching mechanism, 58i, 58e...
...Refueling route.

Claims

[Scope of utility model registration request]

A plurality of cylinders are arranged in series in the cylinder block, and a plurality of rocker arms corresponding to the engine valves of each cylinder are swingably supported by a rocker shaft fixedly supported on the cylinder head, and the opening and closing operation of the engine valves is controlled. In order to change the connection and disconnection between adjacent rocker arms, a hydraulic connection switching mechanism that can switch between connecting and disconnecting adjacent rocker arms according to the hydraulic pressure is provided on the rocker arm for each cylinder. In a valve operating system for a multi-cylinder internal combustion engine in which a passage is coaxially drilled in a rock shaft with one end communicating with a hydraulic pressure supply source, the oil supply passage has one end communicating with the hydraulic pressure supply source having a large diameter. A valve operating device for a multi-cylinder internal combustion engine, characterized in that it is formed in a tapered shape that becomes smaller in diameter toward the other end.