JPS6214104U

JPS6214104U -

Info

Publication number: JPS6214104U
Application number: JP10544285U
Authority: JP
Priority date: 1985-07-12
Filing date: 1985-07-12
Publication date: 1987-01-28
Also published as: JPH048241Y2

Description

[Brief explanation of the drawing]

第１図は本考案の動弁系の全体図、第２図はエ
ンジン上面図、第３図はバルブリフト―スプリン
グ荷重関係グラフ、第４図は非リフト時イとリフ
ト時ロとで着座部材の種々の位置を示す図、第５
図はエンジン回転数と吐出圧力の関係グラフ、第
６図はエンジン回転数と動弁系慣性力との関係グ
ラフ、第７図はカム回転角とカムシヤフトに加わ
る力との関係グラフ、第８図は第２図の方向よ
りみたギヤの正面図。１……エンジン本体、３……吸気弁、４……吸
気カム軸、５……排気弁、６……排気カム軸、７
，８……歯車、１６……バルブリフタ、２１……
リテーナ、２５……バルブスプリング、２６……
着座部材、３０……油圧室、３３……オイルポン
プ、４１……ピストン、４２……ポンプ駆動カム
、４３……ポンプ室。 Fig. 1 is an overall view of the valve train of the present invention, Fig. 2 is a top view of the engine, Fig. 3 is a graph of the valve lift-spring load relationship, and Fig. 4 is the seating member of A when not lifted and B when lifted. Figure 5 showing various positions of
The figure is a graph of the relationship between engine speed and discharge pressure, Figure 6 is a graph of the relationship between engine speed and valve train inertia, Figure 7 is a graph of the relationship between cam rotation angle and force applied to the camshaft, and Figure 8 is a graph of the relationship between cam rotation angle and force applied to the camshaft. is a front view of the gear seen from the direction of FIG. 2. 1...Engine body, 3...Intake valve, 4...Intake camshaft, 5...Exhaust valve, 6...Exhaust camshaft, 7
, 8... Gear, 16... Valve lifter, 21...
Retainer, 25... Valve spring, 26...
Seating member, 30...hydraulic chamber, 33...oil pump, 41...piston, 42...pump drive cam, 43...pump chamber.

Claims

[Claims for Utility Model Registration] 1. In a valve operating system of an internal combustion engine in which a seating member of a valve spring is configured as a hydraulic actuator, and the seating member is driven by hydraulic pressure from a hydraulic passage communicating with an engine oil pressure source, A valve train structure for an internal combustion engine, characterized in that an independent hydraulic pump means is installed separately from an engine oil pressure source, and the hydraulic pump means is driven at least when the engine oil pressure to the seating member is insufficient. 2. The valve train system for an internal combustion engine according to claim 1, wherein the hydraulic pump means is a pump having a reciprocating piston, and the pump is driven by a camshaft of the internal combustion engine. structure. 3. An internal combustion engine has two camshafts, one on the driving side and one on the driven side, and these camshafts are connected in motion by gears, and the cam on the camshaft that drives the piston drives the valve. The valve train structure for an internal combustion engine according to claim 2, wherein the valve train structure is located at an intermediate angular position with respect to the cam. 4. The valve train structure for an internal combustion engine according to claim 1, wherein the valve train is of a direct drive type in which a valve lifter is driven by a cam.