JPS62184114U

JPS62184114U -

Info

Publication number: JPS62184114U
Application number: JP7258786U
Authority: JP
Priority date: 1986-05-16
Filing date: 1986-05-16
Publication date: 1987-11-21

Description

[Brief explanation of the drawing]

第１図は本考案の動弁装置の一部切り欠き平面
図；第２図は第１図の矢印方向から見た各油圧
ポンプを示す図；第３図Ａ，Ｂは吸・排気バルブ
作動・停止切換時の切換弁の回転位置を示す図；
第４図は６気筒４バルブＤＯＨＣエンジンのシリ
ンダヘツドの模式的平面図；第５図は本出願人が
先に出願した動弁装置の平面図。１４……吸気バルブ、１６……排気バルブ、１
８……ロツカアーム、２０，２０′……ロツカア
ームシヤフト、２２，２２′……カムシヤフト、
４０……シリンダヘツド、４２……弁作動用第１
カム、４４……弁作動用第２カム、４６……摺動
軸、７６，７６′……油圧ポンプ、８０，８０′
……ポンプ用カム、８２，８２′……ポンププラ
ンジヤ、８４，８４′……ポンプ室、８７，８７
′……油路、９４……ラチエツト式ロツク機構、
１０２……切換弁。 Fig. 1 is a partially cutaway plan view of the valve train of the present invention; Fig. 2 is a diagram showing each hydraulic pump seen from the direction of the arrow in Fig. 1; Fig. 3 A and B are intake/exhaust valve operations.・Diagram showing the rotational position of the switching valve when switching to stop;
FIG. 4 is a schematic plan view of a cylinder head of a 6-cylinder, 4-valve DOHC engine; FIG. 5 is a plan view of a valve train previously filed by the present applicant. 14...Intake valve, 16...Exhaust valve, 1
8...Rotsuka arm, 20, 20'...Rotsuka arm shaft, 22, 22'...Camshaft,
40... Cylinder head, 42... Valve actuation first
Cam, 44... Second cam for valve operation, 46... Sliding shaft, 76, 76'... Hydraulic pump, 80, 80'
... Pump cam, 82, 82'... Pump plunger, 84, 84'... Pump chamber, 87, 87
'...Oil passage, 94...Ratchet type lock mechanism,
102...Switching valve.

Claims

[Scope of Claim for Utility Model Registration] A rocker arm that engages with an intake valve or an exhaust valve is attached to a rocker arm shaft so as to be swingable and slidable in the axial direction, and two cams with different cam profiles are attached to two camshafts of the engine. are arranged adjacent to each other, and each of the rocker arms is connected to a respective hydraulic pump having a pump plunger and a pump chamber through a sliding shaft and a ratchet type lock mechanism, so that either of the rocker arms can be slid in the axial direction. A variable valve operating mode valve operating system for an internal combustion engine, in which a pump cam that selectively engages one of the cams and that operates the pump plunger is fixed to each of the camshafts. An oil passage communicating with the pump chamber is formed, and the oil passage is provided with a switching valve that is opened and closed depending on the engine operating state, and the phase of operation of each pump cam with respect to the pump plunger is set to 18.
A variable valve operating system for an internal combustion engine, characterized by a 0 degree shift.