JPS614855A - Compulsory returning apparatus for secondary-side throttle valve - Google Patents
Compulsory returning apparatus for secondary-side throttle valveInfo
- Publication number
- JPS614855A JPS614855A JP59123742A JP12374284A JPS614855A JP S614855 A JPS614855 A JP S614855A JP 59123742 A JP59123742 A JP 59123742A JP 12374284 A JP12374284 A JP 12374284A JP S614855 A JPS614855 A JP S614855A
- Authority
- JP
- Japan
- Prior art keywords
- throttle valve
- pressure
- primary
- supercharger
- side throttle
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M11/00—Multi-stage carburettors, Register-type carburettors, i.e. with slidable or rotatable throttling valves in which a plurality of fuel nozzles, other than only an idling nozzle and a main one, are sequentially exposed to air stream by throttling valve
- F02M11/02—Multi-stage carburettors, Register-type carburettors, i.e. with slidable or rotatable throttling valves in which a plurality of fuel nozzles, other than only an idling nozzle and a main one, are sequentially exposed to air stream by throttling valve with throttling valve, e.g. of flap or butterfly type, in a later stage opening automatically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D23/00—Controlling engines characterised by their being supercharged
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、内燃機関の吸気通路に過給機を配置するとと
もに、過給機下流に一次側スロットルバルブと二次側ス
ロットルバルブとを併設した過給機付エンジンの気化器
に係り、特に上記両スロットルバルブの連動機構に関す
る。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention provides a supercharger disposed in the intake passage of an internal combustion engine, and a primary throttle valve and a secondary throttle valve downstream of the supercharger. The present invention relates to a carburetor for a supercharged engine, and particularly to an interlocking mechanism for both throttle valves.
従来より、過給機付内燃機関の吸気装置において、一次
側スロットルバルブ上流側の正圧部吸気圧力により二次
側スロットルバルブを開閉制御する方法がある。しかし
この方法では、減速時に一次側パルプの上流側に一時的
に高い残留圧力が発生するため、二次側スロットルバル
ブの閉じ遅れを生じ、応答性不良の原因となる。これを
解決する手段として、一次側スロットルバルブが全閉付
近の状態の時にスプリングの戻しトルクにより二次側ス
ロットルバルブを全開に保持するリターンプレートがあ
り、これは二次弁が全開状態でもリターンプレートによ
り戻しトルクが発生する構造でおる。しかし残留圧力が
高いため二次側スロットルバルブが閉じない不具合が発
生する。このため、リターンプレートの戻しトルクを大
きくする必要があるが、上記戻しトルクを大きくすると
一次側スロットルバルブ全開付近では非常に大きな戻し
トルクとなり、耐久性、操作性などの欠点がある。同様
のものとして、特開昭５７−１８６０４８号公報にカム
レバーにより二次側スロットルバルブの開度を規制する
ものがあるが、これも前記のとおり残留圧力以上の戻し
トルクをカムレバーに加えなければならず、一次側スロ
ットルバルブの閉じ遅れを生じて応答性不良の原因とな
る。また、特公昭５７−１２４０３８に上記両スロット
ルバルブをスプリングにより連動させたものもあるが、
スプリングの形状により多くの容積を必要とし、またダ
ンパー効果により迅速な連動や気化器の簡素化、生産性
などまだ改良の余地を残していると思われる。BACKGROUND ART Conventionally, in an intake system for a supercharged internal combustion engine, there is a method of controlling the opening and closing of a secondary throttle valve using intake pressure in a positive pressure section upstream of a primary throttle valve. However, in this method, a high residual pressure is temporarily generated upstream of the primary pulp during deceleration, resulting in a delay in closing the secondary throttle valve, which causes poor response. As a means to solve this problem, there is a return plate that holds the secondary throttle valve fully open by the return torque of a spring when the primary throttle valve is close to fully closed. The structure is such that a return torque is generated. However, due to high residual pressure, a problem occurs in which the secondary throttle valve does not close. Therefore, it is necessary to increase the return torque of the return plate, but if the return torque is increased, the return torque becomes extremely large near the fully open primary throttle valve, which has drawbacks such as durability and operability. As a similar device, there is a method in JP-A-57-186048 that uses a cam lever to regulate the opening of the secondary throttle valve, but as mentioned above, a return torque greater than the residual pressure must be applied to the cam lever. This causes a delay in the closing of the primary throttle valve, causing poor response. In addition, there is also a model published in Japanese Patent Publication No. 57-124038 in which both of the above throttle valves are linked by a spring.
It seems that there is still room for improvement in terms of the shape of the spring, which requires a large volume, and the damper effect, which allows for quick interlocking, the simplification of the carburetor, and productivity.
本発明の目的は、過給機を配置し、過給機より下流の吸
気通路にアクセルペダルに連動する一次側スロットルバ
ルブと、過給機下流の吸気圧の上昇にともなって作動す
る圧力応動部材に連動する二次側スロットルバルブとを
併設してなる過給機付エンジン用気化器において、リタ
ーンプレートとは独立し、かつ残留過給圧の影響をうけ
ずに上記一次側スロットルバルブの開度が小さくなるに
したがって、二次側スロットルバルブを強制的に閉じ方
向に回転させるキックレバーを提供することにある。An object of the present invention is to arrange a supercharger, and provide a primary throttle valve in an intake passage downstream of the supercharger that is linked to an accelerator pedal, and a pressure responsive member downstream of the supercharger that operates as the intake pressure increases. In a turbocharged engine carburetor that is equipped with a secondary throttle valve that is linked to The object of the present invention is to provide a kick lever that forcibly rotates a secondary throttle valve in the closing direction as the secondary throttle valve becomes smaller.
本発明は、過給機下流の吸気圧によって二次側スロット
ルバルブの開閉を制御してエンジンの負荷に応じて正確
に吸入空気量を制御することができ、かつ−次−側スロ
ットルバルブの開度が小さくなるように作動するにした
がい、キックレバーが二次側スロットルバルブを閉じ方
向へ回転させ、上記作動がたとえ急激であっても二次側
スロットルバルブは上記キックレバーにより遅延するこ
となく閉じて、両スロットルバルブの閉速作動が完全に
なされる利点を有する。The present invention makes it possible to accurately control the amount of intake air according to the engine load by controlling the opening and closing of the secondary throttle valve using the intake pressure downstream of the supercharger, and to control the opening and closing of the secondary throttle valve according to the engine load. As the speed decreases, the kick lever rotates the secondary throttle valve in the closing direction, and even if the above operation is sudden, the secondary throttle valve closes without delay due to the kick lever. This has the advantage that both throttle valves can be completely closed.
以下、本発明の一実施例を第１図及び第２図により説明
する。一次側スロットルバルブ３はアクセルペダル２に
連結され、アクセルペダル２の踏み込みに応じて開閉制
御される。また二次側スロットルバルブ６の弁軸７に固
定されているコネクテイングレバ−９は、弁軸７とフリ
ーに動くことのできるフォローレバー１１とフォロース
プリング８を介して連結されている。またこのフォロー
レバー１１は圧力応用部材としてのダイヤフラム装置１
２にも連結されている。このダイヤフラム装置１２は、
上記フォローレバー１１に先端が枢着された連結ロッド
１３の基端を支持したダイヤフラム１６によって２つの
室１５、室１７に仕切られている。そして連結ロッド１
３が貫通し、大気を連通している室１５には二次側スロ
ットルバルブ６を閉じ方向に付勢するためのダイヤフラ
ムスプリング１４が組込まれ、また他方の室１７は圧力
導管１８によって気化器１の上流の通路１９に連結され
ている。また一次側スロットルバルブ３の弁軸４にはキ
ックレバー５が固定され、二次９１１スロツトルバルブ
６の弁軸７に固定されているコネクテイングレバ−９に
設けられているローラー１０と接する構造である。また
図２に示すように気化器１の反対側にリターンプレート
２１が、一次側弁軸４に回動自由に設けられたリターン
スプリング２２で、二次側弁軸７に固定されたコネクテ
イングレバ−９のローラー１０を反時計方向に押し上げ
ている。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The primary throttle valve 3 is connected to the accelerator pedal 2, and is controlled to open and close in response to depression of the accelerator pedal 2. Further, a connecting lever 9 fixed to the valve shaft 7 of the secondary throttle valve 6 is connected via a follow spring 8 to a follow lever 11 which can freely move on the valve shaft 7. Further, this follow lever 11 is a diaphragm device 1 as a pressure applying member.
It is also connected to 2. This diaphragm device 12 is
It is partitioned into two chambers 15 and 17 by a diaphragm 16 that supports the proximal end of a connecting rod 13 whose distal end is pivoted to the follow lever 11. and connecting rod 1
A diaphragm spring 14 for biasing the secondary throttle valve 6 in the closing direction is incorporated in the chamber 15 which is communicated with the atmosphere through a pressure conduit 18. It is connected to a passage 19 upstream of. Further, a kick lever 5 is fixed to the valve shaft 4 of the primary throttle valve 3, and has a structure in which it contacts a roller 10 provided on a connecting lever 9 fixed to the valve shaft 7 of the secondary 911 throttle valve 6. It is. Further, as shown in FIG. 2, a return plate 21 is provided on the opposite side of the carburetor 1, a return spring 22 is rotatably provided on the primary valve shaft 4, and a connecting lever is fixed to the secondary valve shaft 7. -9 roller 10 is pushed up counterclockwise.
以上の構成において、一次側スロットル弁３が閉じてい
る時は、リターンプレート２１を介してリターンスプリ
ング２２の力により二次側スロットルバルブ６を全閉さ
せている。一方、アクセルくダル２が踏み込まれて一次
側スロットルバルブ３が開き始めると、一次側スロット
ルシャフト４に固定されているレバー２０が図示角度θ
だけ回転してリターンプレート２１な連動し、二次側ス
ロットルブルブロに付加されている閉じ力を解除する。In the above configuration, when the primary throttle valve 3 is closed, the secondary throttle valve 6 is fully closed by the force of the return spring 22 via the return plate 21. On the other hand, when the accelerator pedal 2 is depressed and the primary throttle valve 3 begins to open, the lever 20 fixed to the primary throttle shaft 4 moves at the angle θ shown in the figure.
The return plate 21 rotates in conjunction with the return plate 21 to release the closing force applied to the secondary throttle valve blower.
そのため、過給機下流の吸気圧の上昇により圧力導管１
８で連結されている室１７の圧力がダイヤフラムスプリ
ング１４の力よりも大きくなると、ダイヤフラム１６を
連結ロッド１３の方向へ移動すせ、連結ロッド１３、フ
ォローレバ−１１、フォロースプリング８、コネクテイ
ングレバ−９を介し、て、二次側スロットルバルブ６を
時計方向に回動させる。その結果、全開になると二次側
スロットルバルブ６はダイヤフラム装置１２によりのみ
開度が制御される。他方、アクセルペダル２を戻す時、
すなわち減速時には第１図に示すように一次側スロット
ルバルブ３が閉じ、同時にキックレバー５０時計方向の
回動により、コネクテイングレバ−９に設けられている
ローラー１０を介してコネクティングレハ−９を反時計
方向に回転させることにより二次側スロットルバルブ６
が反時計方向に回転する。またその際室１７に過給圧が
残っていても、連結ロッド１３を介したフォローレバー
１１が二次側弁軸７とフリーに動くため、急減速時にお
ける残留過給圧にも影響をうけない。その結果、一次側
スロットルバルブ３に遅延することなく直ちに二次側ス
ロットルバルブ６も閉じることができ、一次側スロット
ルバルブ３が全閉付近においては、二次側スロットルバ
ルブを全開に保持することができるため、急減速時の暴
走の危険を防止することができる。Therefore, due to an increase in the intake pressure downstream of the turbocharger, the pressure conduit 1
When the pressure in the chamber 17 connected by 8 becomes larger than the force of the diaphragm spring 14, the diaphragm 16 is moved in the direction of the connecting rod 13, and the connecting rod 13, follow lever 11, follow spring 8, and connecting lever are moved. -9 to rotate the secondary throttle valve 6 clockwise. As a result, when fully opened, the opening degree of the secondary throttle valve 6 is controlled only by the diaphragm device 12. On the other hand, when releasing the accelerator pedal 2,
That is, during deceleration, the primary throttle valve 3 closes as shown in FIG. By rotating clockwise, the secondary throttle valve 6
rotates counterclockwise. In addition, even if supercharging pressure remains in the chamber 17 at that time, the follower lever 11 via the connecting rod 13 moves freely with the secondary valve shaft 7, so it is not affected by the residual supercharging pressure during sudden deceleration. do not have. As a result, the secondary throttle valve 6 can be closed immediately without any delay from the primary throttle valve 3, and when the primary throttle valve 3 is close to fully closed, the secondary throttle valve can be kept fully open. This prevents the risk of runaway during sudden deceleration.
本発明によれば、残留過給圧にも影響をうけずＫ −次
（１’ｌｌｌスロツトルバルブと二次側スロットルバル
ブの連係作動を完全に制御できるので、二次側スロット
ルバルブの遅延作動を確実に防止でき、暴走を未然に防
止する効果がある。According to the present invention, the linked operation of the K-order (1'llll) throttle valve and the secondary throttle valve can be completely controlled without being affected by the residual boost pressure. It is possible to reliably prevent this and has the effect of preventing runaway behavior.
第１図は本発明の実施例の概略説明図、第２図は第１図
の反対側の面から見た概略説明図。
１・・・気化器、２・・・アクセルペダル、３・・・一
次側スロットルバルブ、４・・・一次側弁軸、５・・・
キックレバー、６・・・二次側スロットルバルブ、７・
・・二次側弁軸、８・・・フォローレバー、９・・・コ
ネクテイングレバー、１０・・・ローラー、１１・・・
フォローレバー、１２・・・ダイヤフラム装置、１３・
・・連結ロッド、１４・・・ダイヤフラムスプリング、
１５・・・室、１６・・・ダイヤフラム、１７・・・室
、１８・・・圧力導管、１９・・・通路、２０・・・レ
バー、２１・・・リターンプレート、２２・・・リター
ンスプリング。FIG. 1 is a schematic explanatory diagram of an embodiment of the present invention, and FIG. 2 is a schematic explanatory diagram as seen from the opposite side of FIG. 1. 1... Carburetor, 2... Accelerator pedal, 3... Primary side throttle valve, 4... Primary side valve shaft, 5...
Kick lever, 6... Secondary throttle valve, 7.
...Secondary side valve shaft, 8...Following lever, 9...Connecting lever, 10...Roller, 11...
Follow lever, 12...Diaphragm device, 13.
...Connecting rod, 14...Diaphragm spring,
15... Chamber, 16... Diaphragm, 17... Chamber, 18... Pressure conduit, 19... Passage, 20... Lever, 21... Return plate, 22... Return spring .
Claims (1)
下流の吸気通路にアクセルペダルに連動する一次側スロ
ットルバルブと、上記過給機下流の吸気圧の上昇に伴な
つて作動する圧力応動部材に連動する二次側スロットル
バルブとを併設し、二次側スロットルバルブをスプリン
グで強制的に全閉させるリターンプレートを有する過給
機付エンジンの気化器において、残留過給圧の影響をう
けずに上記一次側スロットルバルブの開度が小さくなる
にしたがつて上記二次側スロットルブルブを閉じ方向に
回転させる連動機構を取り付けたことを特徴とする二次
側スロットル弁の強制戻し装置。1. A supercharger is placed in the intake passage, and a primary throttle valve that is linked to the accelerator pedal is installed in the intake passage downstream of the supercharger, and the pressure that operates as the intake pressure downstream of the supercharger increases. In the carburetor of a supercharged engine, which is equipped with a secondary throttle valve that is linked to a response member and has a return plate that forcibly closes the secondary throttle valve fully with a spring, the effect of residual boost pressure is reduced. 1. A forced return device for a secondary throttle valve, characterized in that an interlocking mechanism is installed to rotate the secondary throttle valve in a closing direction as the opening degree of the primary throttle valve decreases without receiving a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59123742A JPS614855A (en) | 1984-06-18 | 1984-06-18 | Compulsory returning apparatus for secondary-side throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59123742A JPS614855A (en) | 1984-06-18 | 1984-06-18 | Compulsory returning apparatus for secondary-side throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS614855A true JPS614855A (en) | 1986-01-10 |
Family
ID=14868201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59123742A Pending JPS614855A (en) | 1984-06-18 | 1984-06-18 | Compulsory returning apparatus for secondary-side throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS614855A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62161610A (en) * | 1986-01-13 | 1987-07-17 | Fuji Seiko Honsha:Kk | Automatic rental safe device |
| JPS62296178A (en) * | 1986-05-27 | 1987-12-23 | ゼロツクス コ−ポレ−シヨン | Fixing member for electrostatic photographic copying equipment |
| JPH01116671A (en) * | 1987-10-30 | 1989-05-09 | Shin Etsu Chem Co Ltd | Fixing roll |
| JPH01271214A (en) * | 1988-04-22 | 1989-10-30 | Shin Etsu Polymer Co Ltd | Manufacture of silicone rubber roller |
| US5504147A (en) * | 1994-02-28 | 1996-04-02 | Shin-Etsu Chemical Co., Ltd. | Process for preparing a liquid silicone composition |
-
1984
- 1984-06-18 JP JP59123742A patent/JPS614855A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62161610A (en) * | 1986-01-13 | 1987-07-17 | Fuji Seiko Honsha:Kk | Automatic rental safe device |
| JPH0378322B2 (en) * | 1986-01-13 | 1991-12-13 | Fuji Seiko Honsha | |
| JPS62296178A (en) * | 1986-05-27 | 1987-12-23 | ゼロツクス コ−ポレ−シヨン | Fixing member for electrostatic photographic copying equipment |
| JP2509218B2 (en) * | 1986-05-27 | 1996-06-19 | ゼロツクス コ−ポレ−シヨン | Fixing member for electrostatic photocopier |
| JPH01116671A (en) * | 1987-10-30 | 1989-05-09 | Shin Etsu Chem Co Ltd | Fixing roll |
| JPH0453434B2 (en) * | 1987-10-30 | 1992-08-26 | Shinetsu Chem Ind Co | |
| JPH01271214A (en) * | 1988-04-22 | 1989-10-30 | Shin Etsu Polymer Co Ltd | Manufacture of silicone rubber roller |
| JPH0581425B2 (en) * | 1988-04-22 | 1993-11-12 | Shinetsu Polymer Co | |
| US5504147A (en) * | 1994-02-28 | 1996-04-02 | Shin-Etsu Chemical Co., Ltd. | Process for preparing a liquid silicone composition |
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