JPH0224008U

JPH0224008U -

Info

Publication number: JPH0224008U
Application number: JP10210588U
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。３……シリンダヘツド、１０ｉ……吸気弁、１
０ｅ……排気弁、１７ｉ，１７ｅ……動弁装置、
２２ｉ，２２ｅ……ロツカシヤフト、２３ｉ，２
３ｅ，２４ｉ，２４ｅ，２５ｉ，２５ｅ……ロツ
カアーム、２６ｉ，２６ｅ……油圧式連結切換機
構、５８ｉ，５８ｅ……給油路、６９ｉ，６９ｅ
……切換弁、８７ｉ，８７ｅ……給油口、８８ｉ
，８８ｅ……油圧供給路。 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. 3...Cylinder head, 10i...Intake valve, 1
0e...exhaust valve, 17i, 17e...valve gear,
22i, 22e...Rotsukashaft, 23i, 2
3e, 24i, 24e, 25i, 25e... Locker arm, 26i, 26e... Hydraulic connection switching mechanism, 58i, 58e... Oil supply path, 69i, 69e
...Switching valve, 87i, 87e...Oil filler port, 88i
, 88e... Hydraulic supply path.

Claims

[Scope of utility model registration request]

A plurality of intake-side rocker arms corresponding to the intake valves and a plurality of exhaust-side rocker arms corresponding to the exhaust valves are swingably supported by intake-side and exhaust-side rocker shafts that are fixed to the cylinder head in parallel with each other. In order to change the valve operating mode according to the operating state of the engine, the intake side and exhaust side rocker arms are each provided with a hydraulic connection switching mechanism that can switch between connecting and disconnecting adjacent rocker arms. for,
In a valve train for an internal combustion engine, each cylinder head is equipped with a pair of oil supply ports and a hydraulic pressure supply source that communicate with the oil supply passages of the intake side and exhaust side rocker shafts, respectively. A pair of hydraulic supply passages are provided to open at the side end face of the cylinder head, and are configured to allow communication and isolation between one oil supply port and one hydraulic supply passage, and between the other oil supply port and the other hydraulic supply passage. 1. A refueling system for a valve operating system for an internal combustion engine, characterized in that a pair of individually switchable switching valves is attached to the side end surface of a cylinder head.