JPH0224005U

JPH0224005U -

Info

Publication number: JPH0224005U
Application number: JP10210288U
Authority: JP
Priority date: 1988-08-01
Filing date: 1988-08-01
Publication date: 1990-02-16
Anticipated expiration: 2003-08-01
Also published as: JPH0610104Y2

Description

[Brief explanation of the drawing]

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……機関弁とし
ての吸気弁、１０ｅ……機関弁としての排気弁、
１７ｉ，１７ｅ……動弁装置、２２ｉ，２２ｅ…
…ロツカシヤフト、２３ｉ，２３ｅ，２４ｉ，２
４ｅ，２５ｉ，２５ｅ……ロツカアーム、２６ｉ
，２６ｅ……油圧式連結切換機構、６４……油圧
供給源としてのオイルポンプ、６９……切換弁、
８６……油圧供給路、８７……給油口、３９……
入口ポート、９０……出口ポート、９１……ハウ
ジング、９２……スプール弁体、１１０……圧力
検出器、１１５……油溜まり。 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 as engine valve, 10e... Exhaust valve as engine valve,
17i, 17e...Valve train, 22i, 22e...
...Lotsukashaft, 23i, 23e, 24i, 2
4e, 25i, 25e...Lotsuka arm, 26i
, 26e...Hydraulic connection switching mechanism, 64...Oil pump as a hydraulic pressure supply source, 69...Switching valve,
86... Hydraulic supply path, 87... Oil filler port, 39...
Inlet port, 90... Outlet port, 91... Housing, 92... Spool valve body, 110... Pressure detector, 115... Oil reservoir.

Claims

[Scope of utility model registration request]

A plurality of rocker arms are supported on the rocker shaft, which is fixedly supported on the cylinder head, to drive the engine valves to open and close, and these rocker arms can be connected and disconnected to each other according to the operating state of the engine according to hydraulic pressure. In a valve train for an internal combustion engine, the rocker shaft is provided with an oil supply passage leading to the hydraulic coupling and switching mechanism, and the oil supply passage is provided on one end surface of the cylinder head along the axial direction of the rocker shaft. A fuel supply port communicating with one end and a hydraulic pressure supply path leading to a hydraulic pressure supply source are opened, and a housing having an inlet port communicating with the hydraulic pressure supply path and an outlet port communicating with the fuel supply port is configured to allow communication and isolation between both ports. A switching valve, in which a switching spool valve element is slidably fitted, is attached to one end surface of the cylinder head, and an oil reservoir communicating with the outlet port is formed in the housing on the opposite side of the outlet port, sandwiching the spool valve element. A valve operating device for an internal combustion engine, characterized in that a pressure detector facing the oil reservoir is attached to the housing.