JPH0310007U

JPH0310007U -

Info

Publication number: JPH0310007U
Application number: JP7217689U
Authority: JP
Priority date: 1989-06-20
Filing date: 1989-06-20
Publication date: 1991-01-30

Description

[Brief explanation of drawings]

第１図は、本考案を適用した内燃機関の動弁機
構を示す上面図である。第２図は、第１図の矢印
から見た矢視図である。第３図は、低速運転状
態に於ける第２図の−線に沿う断面図である
。第４図は、本考案を４気筒内燃機関に適用した
場合の給油系を示す油圧回路図である。第５図は
、第２給油系統を示す低速運転状態の油圧回路図
である。１ａ，１ｂ……吸気弁、２……カム軸、３ａ，
３ｂ……低速用カム、４……高速用カム、５……
第１ロツカアーム、６……第２ロツカアーム、７
……第３ロツカアーム、５ａ〜７ａ……カムスリ
ツパ、８，８ｉ，８ｅ……ロツカシヤフト、９ａ
，９ｂ…タペツトねじ、１０ａ，１０ｂ……ロツ
クナツト、１１，１１ｉ，１１ｅ……連結切換装
置、１２ａ，１２ｂ……リテーナ、１３ａ，１３
ｂ……バルブスプリング、１４……第１ガイド孔
、１５……第１切換ピン、１６……油圧室、１７
……通路、１８，１８ｉ，１８ｅ……作動油供給
通路、１９……第２ガイド孔、２０……第２切換
ピン、２１……第３ガイド孔、２２……ストツパ
ピン、２３……ガイドスリーブ、２４……軸部、
２５……リターンスプリング、３１ｉ，３１ｅ…
…動弁装置、３２……電磁切換弁、３３……フイ
ルタ、３４……切換弁、３５……メインオイルギ
ヤラリ、３６……オイルパン、３７……オイルポ
ンプ、３８……リリーフ弁、３９……オイルフイ
ルタ、４０……オイルクーラ、４１ａ〜４１ｅ…
…通路、４２ａ〜４２ｅ……カムジヤーナル、４
３……油路、４４……オリフイス、４５ｉ，４５
ｅ……給油路、４６ｉ，４６ｅ……潤滑油噴出孔
、４７ｉ，４７ｅ……カムジヤーナル、４８ｉ，
４８ｅ……通路、４９ｉ，４９ｅ……オリフイス
、５０ｉ，５０ｅ……給油路、５１ｉ，５１ｅ…
…潤滑油噴出孔、５２……第１給油系統、５３…
…第２給油系統、５４，５５……チエツク弁、６
１……オイルタンク、６２……電動ポンプ、６３
……フイルタ、６４……圧力調整器、６５……コ
ンピユータユニツト、６６……温度調整器、７１
……スプール弁、７２……電磁弁、７３……シリ
ンダヘツド、７４……ハウジング、７５……弁体
、７６……給油口、７７……通路、７８……入口
ポート、７９……出口ポート、８０……スプリン
グ、８１……オリフイス孔、８２……バイパスポ
ート、８３……ばね室、８４……オリフイス孔、
８５……管路、８６……入口ポート、８７……出
口ポート、８８……管路、８９……接続孔、９０
……端子、９１……プランジヤ、９２…油圧セン
サ。 FIG. 1 is a top view showing a valve mechanism for an internal combustion engine to which the present invention is applied. FIG. 2 is a view taken from the arrow in FIG. 1. FIG. 3 is a sectional view taken along the - line in FIG. 2 in a low-speed operating state. FIG. 4 is a hydraulic circuit diagram showing an oil supply system when the present invention is applied to a four-cylinder internal combustion engine. FIG. 5 is a hydraulic circuit diagram showing the second oil supply system in a low speed operating state. 1a, 1b...Intake valve, 2...Camshaft, 3a,
3b...Low speed cam, 4...High speed cam, 5...
1st Rotsuka arm, 6... 2nd Rotsuka arm, 7
...3rd rock arm, 5a-7a...cam slipper, 8, 8i, 8e... rock shaft, 9a
, 9b... Tappet screw, 10a, 10b... Lock nut, 11, 11i, 11e... Connection switching device, 12a, 12b... Retainer, 13a, 13
b... Valve spring, 14... First guide hole, 15... First switching pin, 16... Hydraulic chamber, 17
... Passage, 18, 18i, 18e ... Hydraulic oil supply passage, 19 ... Second guide hole, 20 ... Second switching pin, 21 ... Third guide hole, 22 ... Stopper pin, 23 ... Guide sleeve , 24...shaft part,
25...Return spring, 31i, 31e...
...Valve train, 32...Solenoid switching valve, 33...Filter, 34...Switching valve, 35...Main oil gear, 36...Oil pan, 37...Oil pump, 38...Relief valve, 39 ...Oil filter, 40...Oil cooler, 41a to 41e...
...Aisle, 42a to 42e...Kamjiarnal, 4
3... Oil passage, 44... Orifice, 45i, 45
e...Oil supply path, 46i, 46e...Lubricating oil outlet, 47i, 47e...Cam journal, 48i,
48e... passage, 49i, 49e... orifice, 50i, 50e... oil supply path, 51i, 51e...
...Lubricating oil spout hole, 52...First oil supply system, 53...
...Second oil supply system, 54, 55...Check valve, 6
1...Oil tank, 62...Electric pump, 63
... Filter, 64 ... Pressure regulator, 65 ... Computer unit, 66 ... Temperature regulator, 71
... Spool valve, 72 ... Solenoid valve, 73 ... Cylinder head, 74 ... Housing, 75 ... Valve body, 76 ... Oil filler port, 77 ... Passage, 78 ... Inlet port, 79 ... Outlet port , 80... Spring, 81... Orifice hole, 82... Bypass port, 83... Spring chamber, 84... Orifice hole,
85... Pipe line, 86... Inlet port, 87... Outlet port, 88... Pipe line, 89... Connection hole, 90
...terminal, 91...plunger, 92...hydraulic sensor.

Claims

[Claims for Utility Model Registration] (1) An intake valve or an exhaust valve that is driven to open and close by a cam that rotates in synchronization with the crankshaft, and an intake valve or an exhaust valve that is arranged adjacent to each other so as to be relatively displaceable to transmit the lift of the cam to the valve. A valve mechanism for an internal combustion engine, comprising a plurality of cam followers and a connection switching means for selectively connecting or disconnecting the cam followers using hydraulic pressure depending on the operating condition of the engine, thereby changing the valve operating state. A valve operating mechanism for an internal combustion engine, comprising: an oil reservoir for storing lubricating oil for supplying hydraulic pressure to the connection switching means; and a temperature regulator provided in the oil reservoir. (2) The oil reservoir is comprised of an oil tank that stores a portion of the lubricating oil separately from an oil pan that stores lubricating oil for the engine, and is driven by the engine to collect lubricating oil from the oil pan. Separately from the oil pump for pressure-feeding, an electric pump is provided that is driven and controlled according to the operating state of the engine and pumps lubricating oil from the oil tank in order to supply hydraulic pressure to the connection switching means, and also includes an electric pump that pumps lubricating oil from the oil tank. A valve mechanism for an internal combustion engine, characterized in that a valve mechanism is attached to the oil tank. (3) Claim 2 of the utility model registration, characterized in that the temperature regulator comprises a heater means, and the electric pump can be driven when the temperature of lubricating oil in the oil tank is equal to or higher than a predetermined value. A valve mechanism for an internal combustion engine described in .