JPH01111142U

JPH01111142U -

Info

Publication number: JPH01111142U
Application number: JP494788U
Authority: JP
Priority date: 1988-01-19
Filing date: 1988-01-19
Publication date: 1989-07-26
Anticipated expiration: 2003-01-19
Also published as: JPH0716034Y2

Description

[Brief explanation of the drawing]

第１図〜第７図は、本考案の第１実施例を示し
、第１図は可変スワール機構の側面図、第２図は
可変スワール機構の平面図、第３図は第１図のＡ
部分の拡大側面図、第４図及び第５図は第３図の
Ｃ―Ｃ線に沿う矢視断面図で、第４図は冷間時の
状態図、第５図は温間時の状態図、第６図は雰囲
気温度とコントロールバルブの開き角θとの関係
を例示するグラフ、第７図はコントロールバルブ
の開き角θとスワール比（ＳＲ）との関係を例示
するグラフ、第８図及び第９図は本考案の第２実
施例にかかる可変スワール機構を示し、第８図は
その冷間時の平面図、第９図はその温間時の平面
図、第１０図及び第１１図は本考案の第３実施例
にかかる可変スワール機構を示し、第１０図はそ
の冷間時の平面図、第１１図はその温間時の平面
図、第１２図及び第１３図は第４実施例を示し、
第１２図はバイメタル製渦巻きバネの平面図、第
１３図は雰囲気温度とコントロールバルブの開き
角θとの関係グラフ、第１４図及び第１５図は従
来例にかかるスワールポート及びインテークマニ
ホールドを示し第１４図はその側面図、第１５図
はその平面図、第１６図は他の従来例にかかる可
変スワール機構の平面図である。１……可変スワール機構、１０……プレート、
１１……スワールコントロールバルブ、１２……
可動軸、１３……渦巻きバネ（形状記憶合金製）
、１５……カラー、１６……溶接部、１７……ブ
ラケツト、１８……ロツド、１９……固定軸、１
９１……回転軸、２１……インテークマニホール
ド、２３……スワールポート、５０，５５……プ
レート、５１，５６，５７……コイルバネ（形状
記憶合金製）、６０……渦巻きバネ（バイメタル
製）。 1 to 7 show a first embodiment of the present invention, FIG. 1 is a side view of the variable swirl mechanism, FIG. 2 is a plan view of the variable swirl mechanism, and FIG. 3 is A of FIG. 1.
An enlarged side view of the part, Figures 4 and 5 are cross-sectional views taken along line C--C in Figure 3, Figure 4 is a cold state diagram, and Figure 5 is a warm state. Figure 6 is a graph illustrating the relationship between ambient temperature and control valve opening angle θ, Figure 7 is a graph illustrating the relationship between control valve opening angle θ and swirl ratio (SR), and Figure 8 is a graph illustrating the relationship between control valve opening angle θ and swirl ratio (SR). 9 shows a variable swirl mechanism according to a second embodiment of the present invention, FIG. 8 is a plan view when it is cold, FIG. 9 is a plan view when it is warm, and FIGS. The figures show a variable swirl mechanism according to a third embodiment of the present invention, FIG. 10 is a plan view of the mechanism when it is cold, FIG. 11 is a plan view of the mechanism when it is warm, and FIGS. 4 examples are shown,
Fig. 12 is a plan view of a bimetallic spiral spring, Fig. 13 is a graph of the relationship between ambient temperature and control valve opening angle θ, and Figs. 14 and 15 show swirl ports and intake manifolds according to conventional examples. FIG. 14 is a side view thereof, FIG. 15 is a plan view thereof, and FIG. 16 is a plan view of another conventional variable swirl mechanism. 1... variable swirl mechanism, 10... plate,
11...Swirl control valve, 12...
Movable axis, 13...Spiral spring (made of shape memory alloy)
, 15... Collar, 16... Welding part, 17... Bracket, 18... Rod, 19... Fixed shaft, 1
91... Rotating shaft, 21... Intake manifold, 23... Swirl port, 50, 55... Plate, 51, 56, 57... Coil spring (made of shape memory alloy), 60... Spiral spring (made of bimetal).

Claims

[Scope of Claim for Utility Model Registration] (1) In the intake manifold of an engine that has a swirl port in the intake system,
A variable swirl characterized in that a swirl control valve having a plate for opening and closing an air passage is disposed at an inlet portion of the swirl port, and the swirl control valve is opened and closed by the operation of a heat-deformed metal. mechanism. (2) The variable swirl mechanism according to claim 1, wherein the thermally deformable metal is either a shape memory alloy or a bimetal. (3) In the variable swirl mechanism according to the first claim, the swirl control valve includes a movable shaft pivotally supported on the intake manifold and a plate provided on the movable shaft, and the movable shaft includes an intake manifold and a plate provided on the movable shaft. A spiral spring made of shape memory alloy is interposed between them, one of which is fixed to the side wall of the movable shaft and the other to the intake manifold, and the plate is moved by the operation of the spring. A variable swirl mechanism characterized by opening and closing. (4) In the variable swirl mechanism according to the first claim, the swirl control valve includes a bracket fixed to the intake manifold, a plate pivotally supported by the bracket, one end attached to the plate, and the other end attached to the intake manifold. A variable swirl mechanism comprising a fixed spring made of a shape memory alloy, and the plate is opened and closed by the operation of the spring. (5) In the variable swirl mechanism according to the first claim, the swirl control valve includes a fixed shaft fixed to the intake manifold, a rotating shaft rotatably supported on the fixed shaft, and a rotating shaft provided on the rotating shaft. The rotating shaft has a spring made of a shape memory alloy interposed between the intake manifold and the intake manifold on its side wall, and the rotating shaft has a shape-memory alloy spring interposed between the side wall and the intake manifold, A variable swirl mechanism characterized in that a spring similar to the above is interposed between the intake manifold and the rotating shaft is rotated by the operation of the spring. (6) The variable swirl mechanism according to claim 3, characterized in that a bimetallic spiral spring is interposed in place of the shape memory alloy spiral spring.