JPH048737U

JPH048737U -

Info

Publication number: JPH048737U
Application number: JP5046290U
Authority: JP
Priority date: 1990-05-15
Filing date: 1990-05-15
Publication date: 1992-01-27

Description

[Brief explanation of the drawing]

第１図乃至第４図はこの考案の一実施例を示す
もので、第１図はロータリバルブの位相調整機構
の概略構成を示す斜視図、第２図はロータリバル
ブの装着状態を示す概略構成図、第３図は位相調
整機構の遊星歯車機構を示す概略構成図、第４図
は吸気バルブおよびロータリバルブの動作状態を
示す特性図、第５図は他の実施例を示す要部の概
略構成図である。１……エンジン、２……吸気通路、３……ロー
タリバルブ、４……ロータリバルブ駆動装置、１
２……ロータリバルブハウジング、１５……バル
ブ本体、１７……位相調整機構、２３……位相調
整機構駆動手段、２３ａ……ウオームホイール、
２３ｂ……ウオームギア、２５……駆動モータ。 Figures 1 to 4 show an embodiment of this invention, in which Figure 1 is a perspective view showing a schematic configuration of a phase adjustment mechanism of a rotary valve, and Figure 2 is a schematic configuration showing a state in which the rotary valve is installed. Fig. 3 is a schematic configuration diagram showing the planetary gear mechanism of the phase adjustment mechanism, Fig. 4 is a characteristic diagram showing the operating states of the intake valve and rotary valve, and Fig. 5 is a schematic diagram of main parts showing another embodiment. FIG. 1... Engine, 2... Intake passage, 3... Rotary valve, 4... Rotary valve drive device, 1
2... Rotary valve housing, 15... Valve body, 17... Phase adjustment mechanism, 23... Phase adjustment mechanism driving means, 23a... Worm wheel,
23b... Worm gear, 25... Drive motor.

Claims

[Claims for Utility Model Registration] A rotary valve is interposed in the intake passage of the engine for controlling the intake air amount of the engine by opening and closing the intake passage of the engine as the valve body in the housing rotates; A rotary valve drive device includes a rotary valve phase adjustment mechanism that rotationally drives the valve body of the rotary valve in synchronization with the rotation of the crankshaft and changes the phase of rotation of the rotary valve body with respect to the crankshaft. In the intake air amount control device for an engine, a worm gear rotationally driven by a drive motor and a worm wheel meshed with the worm gear form a phase adjustment mechanism driving means for driving the phase adjustment mechanism of the rotary valve. An engine intake air amount control device characterized by: