JPS626410U

JPS626410U -

Info

Publication number: JPS626410U
Application number: JP9773985U
Authority: JP
Priority date: 1985-06-26
Filing date: 1985-06-26
Publication date: 1987-01-16

Description

[Brief explanation of the drawing]

第１図Ａ，Ｂ，Ｃ〜第７図はこの考案に係る吸
・排気弁駆動制御装置の一実施例を示す図であり
、第１図Ａはそのリフト可変機構を示す断面図、
第１図Ｂは制御手段および引張力発生手段を示す
断面図、第１図Ｃは第１図Ｂのスプール体の平面
図、第２図〜第４図は各運転条件下での各作動を
それぞれ説明する各説明図、第５図は機関回転数
と負荷状態とから設定される各運転条件領域を示
すグラフ、第６図は吸気弁のリフト量を示すグラ
フ、第７図は排気弁のリフト量を示すグラフ、第
８図〜第１１図はこの考案の他の実施例を示す図
であり、第８図はリフト可変機構を示すその断面
図、第９図は制御手段を示すその断面図、第１０
図は引張力発生手段と制御手段とを示す断面図、
第１１図はそのリフト特性を示すグラフ、第１２
図は従来の吸・排気弁駆動制御装置を示すその断
面図である。１１……駆動カム（入力手段）、１２，６２…
…吸・排気弁、１３……ロツカアーム（出力手段
）、３５……スプール（第１引張力発生手段）、
４０……ガバナ（第２引張力発生手段）、４６，
６８……制御手段、５１……カム（出力手段）、
５２……カム軸（入力手段）、７３……圧力アク
チユエータ（第１引張力発生手段）。 1A, B, C to 7 are diagrams showing one embodiment of the intake/exhaust valve drive control device according to this invention, and FIG. 1A is a sectional view showing the variable lift mechanism;
Figure 1B is a sectional view showing the control means and tension generating means, Figure 1C is a plan view of the spool body in Figure 1B, and Figures 2 to 4 illustrate each operation under each operating condition. The respective explanatory diagrams, Fig. 5 is a graph showing each operating condition range set from the engine speed and load condition, Fig. 6 is a graph showing the lift amount of the intake valve, and Fig. 7 is a graph showing the lift amount of the exhaust valve. Graphs showing the amount of lift, FIGS. 8 to 11 are views showing other embodiments of this invention, FIG. 8 is a sectional view showing the variable lift mechanism, and FIG. 9 is a sectional view showing the control means. Figure, 10th
The figure is a sectional view showing a tensile force generation means and a control means,
Figure 11 is a graph showing its lift characteristics, Figure 12 is a graph showing its lift characteristics.
The figure is a sectional view showing a conventional intake/exhaust valve drive control device. 11... Drive cam (input means), 12, 62...
... Suction/exhaust valve, 13... Locker arm (output means), 35... Spool (first tension generating means),
40... Governor (second tensile force generating means), 46,
68...control means, 51...cam (output means),
52...Camshaft (input means), 73...Pressure actuator (first tensile force generation means).

Claims

[Scope of utility model registration request]

An input means that rotates in synchronization with the rotation of the engine and inputs the driving force from the engine, a control means that variably controls the lift characteristics of the intake and exhaust valves according to the input driving force, and is driven and controlled by the control means. an output means for transmitting driving force to the intake and exhaust valves; and a first tensile force generating means for generating a tensile force in accordance with a load state of the engine. a second tensile force generating means for generating a tensile force by centrifugal force according to the rotational speed of the engine, and the control means is driven by a combined force of the respective tensile forces of these tensile force generating means. An intake/exhaust valve drive control device for an internal combustion engine, characterized by: