JPH10227232A - Idle speed control valve for internal combustion engine - Google Patents
Idle speed control valve for internal combustion engineInfo
- Publication number
- JPH10227232A JPH10227232A JP3004897A JP3004897A JPH10227232A JP H10227232 A JPH10227232 A JP H10227232A JP 3004897 A JP3004897 A JP 3004897A JP 3004897 A JP3004897 A JP 3004897A JP H10227232 A JPH10227232 A JP H10227232A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- air
- speed control
- idle speed
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 238000007796 conventional method Methods 0.000 description 2
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Lift Valve (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は内燃機関のアイドル
回転数制御弁に関する。The present invention relates to an idle speed control valve for an internal combustion engine.
【０００２】[0002]
【従来の技術】従来のアイドル回転数制御弁は、要求流
量を満足する弁形状で対応している為、弁テーパ角によ
る開弁時の弁食い込み及び、空気のもれについての両立
性を考慮していなかった。2. Description of the Related Art A conventional idle speed control valve is compatible with a valve shape that satisfies a required flow rate. Therefore, consideration is given to compatibility with valve biting at the time of valve opening due to a valve taper angle and air leakage. I didn't.
【０００３】[0003]
【発明が解決しようとする課題】弁テーパ角による閉弁
時の食い込みを防止するためアイドル回転数制御弁は、
対面する円環状のバルブシートに着座しない様にして採
用していた。従って閉弁時の空気のもれ量が多くなり、
システム上、低流量域での制御が困難であった。本発明
の目的は、アイドル回転数制御弁の対面する円環状のバ
ルブシートとの接触テーパ角を一定値に定め、閉弁時の
弁食い込みがなく、空気もれ量も少なくなり、両立出来
ることにある。In order to prevent the bite at the time of closing the valve due to the valve taper angle, an idle speed control valve is provided.
It was adopted so as not to be seated on the facing annular valve seat. Therefore, the amount of air leakage when the valve is closed increases,
Due to the system, it was difficult to control in the low flow rate range. An object of the present invention is to set the contact taper angle of the idle speed control valve with the opposed annular valve seat at a constant value, to eliminate valve bite when closing the valve, reduce the amount of air leakage, and achieve compatibility. It is in.
【０００４】[0004]
【課題を解決するための手段】本課題は、対面する円環
状のバルブシートに接触するアイドル回転数制御弁のテ
ーパ角度を５０°に限定することにより、閉弁時の弁食
い込みをなくし、空気のもれ量も少なくすることができ
る。SUMMARY OF THE INVENTION The object of the present invention is to limit the taper angle of the idle speed control valve in contact with the facing annular valve seat to 50 °, thereby eliminating valve biting at the time of closing the valve, and reducing air flow. The amount of leakage can be reduced.
【０００５】[0005]
【発明の実施の形態】図１に本弁機構の全体構造を示
す。FIG. 1 shows the overall structure of the present valve mechanism.
【０００６】この実施例のアイドル回転数制御弁機構
は、コントロールユニットによって制御されたコイル電
磁力を駆動力源とするステップモータ式の機構を有し、
その機構によって軸方向に進退制御されるシャフトに取
り付けられた傘状の弁でこれに対面する円環状のバルブ
シート部の開口面積を制御して、そこを流れる空気の量
を制御する。The idle speed control valve mechanism of this embodiment has a step motor type mechanism using a coil electromagnetic force controlled by a control unit as a driving force source.
An umbrella-shaped valve attached to a shaft that is controlled to advance and retreat in the axial direction by the mechanism controls the opening area of an annular valve seat portion facing the umbrella-shaped valve and controls the amount of air flowing therethrough.
【０００７】この弁機構が設けられた空気通路は、エン
ジンのエアクリーナを通過して絞弁で調量されてシリン
ダへ流れる主空気が流れる主通路から分岐したバイパス
通路で、その分岐位置は絞弁の上流で分流位置は絞弁の
下流である。The air passage provided with this valve mechanism is a bypass passage branched from the main passage through which the main air which flows through the engine air cleaner, is metered by the throttle valve and flows to the cylinder, and the branch position is the throttle valve. Is located downstream of the throttle valve.
【０００８】弁機構ＶＭは、主通路ＭＰの壁面に形成さ
れたバイパスＢＰを有するボディ１に属する。ボディ１
の内部には、通路途中に円環状のバルブシートＶＳが形
成されている。[0008] The valve mechanism VM belongs to a body 1 having a bypass BP formed on the wall surface of the main passage MP. Body 1
, An annular valve seat VS is formed in the middle of the passage.
【０００９】絞弁２の下流にある負圧導入口３に負圧が
作用すると、エンジンのエアクリーナを通過して、絞弁
２によって調量されてシリンダへ流れる主空気が流れる
主通路から分岐した空気進入口４より空気が導入され
る。このときアイドル回転数制御弁５の取り付けられた
シャフト６はターミナル７を介してコントロールユニッ
ト８からの入力信号により発生するコイル９の電磁力に
よって軸方向に進退制御されてアイドル回転数制御弁５
と対面する円環状のバルブシートＶＳとの開口面積を制
御し、流れる空気の量を制御する。When a negative pressure is applied to the negative pressure inlet 3 downstream of the throttle valve 2, the air passes through the air cleaner of the engine and branches off from the main passage through which the main air metered by the throttle valve 2 and flowing to the cylinder flows. Air is introduced from the air inlet 4. At this time, the shaft 6 to which the idle speed control valve 5 is attached is controlled in the axial direction by the electromagnetic force of the coil 9 generated by an input signal from the control unit 8 via the terminal 7 so that the idle speed control valve 5 is controlled.
To control the opening area of the annular valve seat VS that faces the valve seat VS to control the amount of flowing air.
【００１０】図２，図３，図４，図５，図６および図７
にアイドル回転数制御弁５と対面する円環状のバルブシ
ートＶＳとの接触関係図と流量特性を示す。FIGS. 2, 3, 4, 5, 6, and 7
FIG. 3 shows a contact relationship diagram and a flow rate characteristic between the idle speed control valve 5 and the annular valve seat VS facing the idle speed control valve 5.
【００１１】図２は従来技術における接触関係図を示す
が、閉弁時の弁食い込みを考慮して接触テーパー角をθ
1 ＜５０°として、着座しない様にアイドル回転数制御
弁と対面する円環状のバルブシートとの間の距離を長く
して設定している。このため図３に示す様にエンジン始
動時の空気のもれ量が多くなりハイアイドルなどの不具
合を発生する要因となっていた。FIG. 2 shows a contact relation diagram in the prior art. The contact taper angle is set to θ in consideration of valve biting when the valve is closed.
1 <50 °, the distance between the idle speed control valve and the facing annular valve seat is set to be long so as not to be seated. For this reason, as shown in FIG. 3, the amount of air leaking at the time of starting the engine is increased, which causes a problem such as high idle.
【００１２】図４にもう一例の従来技術における接触関
係図を示すが閉弁時の空気もれ量を少なくすることを考
慮して、接触テーパー角を、θ2 ≫５０°として、アイ
ドル回転数制御弁と対面する円環状のバルブシートとの
間の距離を短くして設定している。これによってエンジ
ン始動時の空気のもれ量は少なくなるが空気流量の傾斜
が大きくなり、エンジンシステムの制御上、成立しない
という難点がある。FIG. 4 shows a contact relation diagram of another example of the prior art. In consideration of reducing the amount of air leakage when the valve is closed, the contact taper angle is set to θ 2 ≫50 °, and the idling speed is set. The distance between the control valve and the facing annular valve seat is set short. As a result, the amount of air leakage at the time of starting the engine is reduced, but the gradient of the air flow rate is increased, so that there is a problem that it cannot be established in controlling the engine system.
【００１３】図６に本発明による接触関係図を示すが、
接触テーパ角を５０°に限定することにより、閉弁時の
食い込みがない様に設定が出来尚かつ、空気のもれ量及
び空気流量の傾斜も抑制できる制御弁が成立する。FIG. 6 shows a contact relation diagram according to the present invention.
By limiting the contact taper angle to 50 °, a control valve that can be set so as not to bite when the valve is closed and that can also suppress the amount of air leakage and the inclination of the air flow rate is established.
【００１４】[0014]
【発明の効果】本発明によれば、アイドル回転数制御弁
の対面する円環状のバルブシートとの接触テーパ角を５
０°に限定することによって、閉弁時の弁食い込みをな
くし、空気のもれ量も少なくすることができる。According to the present invention, the contact taper angle of the idle speed control valve with the opposed annular valve seat is set to 5 degrees.
By limiting the angle to 0 °, it is possible to eliminate valve biting at the time of closing the valve, and to reduce the amount of air leakage.
【図１】本発明を使用したアイドル回転数制御弁の説明
図。FIG. 1 is an explanatory diagram of an idle speed control valve using the present invention.
【図２】従来技術の説明図。FIG. 2 is an explanatory diagram of a conventional technique.
【図３】従来技術の説明図。FIG. 3 is an explanatory diagram of a conventional technique.
【図４】本発明の一実施例の説明図。FIG. 4 is an explanatory diagram of one embodiment of the present invention.
【図５】本発明の一実施例の説明図。FIG. 5 is an explanatory diagram of one embodiment of the present invention.
【図６】本発明の第二実施例の説明図。FIG. 6 is an explanatory view of a second embodiment of the present invention.
【図７】本発明の第二実施例の説明図。FIG. 7 is an explanatory view of a second embodiment of the present invention.
【符号の説明】 １…ボディ、２…絞弁、３…負圧導入口、４…空気進入
口、５…アイドル回転数制御弁、６…シャフト、７…タ
ーミナル、８…コントロールユニット、９…コイル、Ｖ
Ｍ…弁機構、ＢＰ…バイパス、ＶＳ…バルブシート、Ｍ
Ｐ…主通路。[Description of Signs] 1 ... Body, 2 ... Throttle valve, 3 ... Negative pressure inlet, 4 ... Air inlet, 5 ... Idle speed control valve, 6 ... Shaft, 7 ... Terminal, 8 ... Control unit, 9 ... Coil, V
M: valve mechanism, BP: bypass, VS: valve seat, M
P: Main passage.
Claims (1)
れた空気を計量する弁体と、上記弁体が取り付けられた
シャフトと、上記シャフトを電磁力により軸方向に駆動
するコイルを有するものにおいて、上記弁体の形状が対
面する円環状のバルブシートに食い込むことがないテー
パ角で、かつ、エンジン始動時の空気もれ量が押えた構
成であることを特徴とする内燃機関のアイドル回転数制
御弁。A valve for measuring air disposed in an air passage which bypasses a throttle valve, a shaft to which the valve is attached, and a coil for driving the shaft in an axial direction by electromagnetic force. The idle rotation of the internal combustion engine, characterized in that the valve body has a tapered angle such that the shape of the valve body does not bite into the facing annular valve seat and the amount of air leakage at the time of engine start is suppressed. Number control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3004897A JPH10227232A (en) | 1997-02-14 | 1997-02-14 | Idle speed control valve for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3004897A JPH10227232A (en) | 1997-02-14 | 1997-02-14 | Idle speed control valve for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10227232A true JPH10227232A (en) | 1998-08-25 |
Family
ID=12292949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3004897A Pending JPH10227232A (en) | 1997-02-14 | 1997-02-14 | Idle speed control valve for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10227232A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002089736A (en) * | 2000-09-18 | 2002-03-27 | Smc Corp | Pilot type two-port vacuum valve |
| JP2002089737A (en) * | 2000-09-18 | 2002-03-27 | Smc Corp | Evacuation valve |
| JP2008111473A (en) * | 2006-10-30 | 2008-05-15 | Miyawaki Inc | Temperature sensitive valve |
| JP2012031966A (en) * | 2010-08-02 | 2012-02-16 | Rinnai Corp | Three-way valve |
| JP2012225353A (en) * | 2011-04-15 | 2012-11-15 | Rinnai Corp | Seal structure of valve |
| WO2019003529A1 (en) * | 2017-06-29 | 2019-01-03 | 愛三工業株式会社 | Bypass air volume control device for internal combustion engine |
-
1997
- 1997-02-14 JP JP3004897A patent/JPH10227232A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002089736A (en) * | 2000-09-18 | 2002-03-27 | Smc Corp | Pilot type two-port vacuum valve |
| JP2002089737A (en) * | 2000-09-18 | 2002-03-27 | Smc Corp | Evacuation valve |
| KR100516600B1 (en) * | 2000-09-18 | 2005-09-22 | 에스엠시 가부시키가이샤 | Pilot-type two-port vacuum valve |
| JP2008111473A (en) * | 2006-10-30 | 2008-05-15 | Miyawaki Inc | Temperature sensitive valve |
| JP2012031966A (en) * | 2010-08-02 | 2012-02-16 | Rinnai Corp | Three-way valve |
| JP2012225353A (en) * | 2011-04-15 | 2012-11-15 | Rinnai Corp | Seal structure of valve |
| WO2019003529A1 (en) * | 2017-06-29 | 2019-01-03 | 愛三工業株式会社 | Bypass air volume control device for internal combustion engine |
| JP2019011693A (en) * | 2017-06-29 | 2019-01-24 | 愛三工業株式会社 | Bypass air quantity control device for internal combustion engine |
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