JPH02137527U

JPH02137527U -

Info

Publication number: JPH02137527U
Application number: JP4655689U
Authority: JP
Priority date: 1989-04-20
Filing date: 1989-04-20
Publication date: 1990-11-16

Description

[Brief explanation of drawings]

第１〜７図は本考案の一実施例としての可変バ
ルブタイミングの位相制御装置を示すもので、第
１図ａ，ｂは本装置を装備したエンジンの模式的
な水平断面図及び側断面図、第２，３図はいずれ
もそのモータの駆動制御モデルを示す図、第４，
５図はそれぞれ第２，３図の駆動制御時における
そのバルブ回転角度とクランク角センサとの関係
を示すグラフ、第６，７図はそのモータの共振を
避けるための駆動制御のモデルを示す図である。１……エンジン、１ａ……エンジン１のシリン
ダヘツド部分、２ａ〜２ｄ……シリンダ、３ａ〜
３ｄ……インテークマニホルド（吸気通路）、４
……ロータリバルブ、４ａ……ロータリバルブ４
の回転軸、４ｂ……円板、５……吸気弁、６……
排気弁、７……エキゾストマニホルド（排気通路
）、８ａ，８ｂ，８ｃ，８ｄ……吸気流通孔、１
０……クランク軸、１０ａ……フライホイール、
１１……電子制御モータとしてのステツパモータ
、１２……バルブ回転角度センサ、１３……エン
ジンコントロールユニツト（ＥＣＵ）、１４……
クランク角センサ、１５……エンジン回転数検出
センサ（エンジン情報検出手段）、１６……エン
ジン負荷センサ（エンジン情報検出手段）。 Figures 1 to 7 show a variable valve timing phase control device as an embodiment of the present invention, and Figures 1a and 1b are schematic horizontal sectional views and side sectional views of an engine equipped with this device. , 2 and 3 are diagrams showing the drive control model of the motor, and 4.
Figure 5 is a graph showing the relationship between the valve rotation angle and the crank angle sensor during the drive control shown in Figures 2 and 3, respectively, and Figures 6 and 7 are diagrams showing a model of drive control to avoid resonance of the motor. It is. 1...Engine, 1a...Cylinder head portion of engine 1, 2a-2d...Cylinder, 3a-
3d...Intake manifold (intake passage), 4
...Rotary valve, 4a...Rotary valve 4
rotation axis, 4b... disc, 5... intake valve, 6...
Exhaust valve, 7... Exhaust manifold (exhaust passage), 8a, 8b, 8c, 8d... Intake flow hole, 1
0...Crankshaft, 10a...Flywheel,
11... Stepper motor as an electronically controlled motor, 12... Valve rotation angle sensor, 13... Engine control unit (ECU), 14...
Crank angle sensor, 15... Engine rotation speed detection sensor (engine information detection means), 16... Engine load sensor (engine information detection means).

Claims

[Scope of utility model registration request]

In a variable valve timing phase control device that is equipped with a rotary valve in the intake system of an engine and can adjust the opening and closing timing of the valve by controlling the phase of the rotary valve, the phase control device rotates the rotary valve. A driving electronically controlled motor, a valve rotation angle sensor that detects the rotation angle of the rotary valve, a crank angle sensor that detects the crank angle of the engine, an engine information detection means that detects the operating state of the engine, and the valve. A phase control device for variable valve timing, comprising a rotation angle sensor, a controller that controls rotation of the motor according to signals from the crank angle sensor and the engine information detection means.