JPH0227153A - Mechanism for controlling secondary valve of duplex carburetor - Google Patents
Mechanism for controlling secondary valve of duplex carburetorInfo
- Publication number
- JPH0227153A JPH0227153A JP17692088A JP17692088A JPH0227153A JP H0227153 A JPH0227153 A JP H0227153A JP 17692088 A JP17692088 A JP 17692088A JP 17692088 A JP17692088 A JP 17692088A JP H0227153 A JPH0227153 A JP H0227153A
- Authority
- JP
- Japan
- Prior art keywords
- throttle valve
- primary
- valve control
- side throttle
- lever
- 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
- 230000007246 mechanism Effects 0.000 title claims description 11
- 230000009977 dual effect Effects 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
Landscapes
- 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】
〔産業上の利用分野〕
本発明は複式気化器の２次弁制御機構に係り、特に自動
車の運転者が受けるアクセルフィーリングの円滑感を向
上するに好適な複式気化器の２次弁制御機構に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a secondary valve control mechanism for a dual carburetor, and in particular, a dual carburetor suitable for improving the smoothness of the accelerator feeling experienced by an automobile driver. This invention relates to a secondary valve control mechanism for a device.
従来の機構は、１次側絞り弁の一定開度まで２次側絞り
弁の回動を抑止する２次側絞り弁制御レバーを２次側絞
り弁の閉方向に付勢するスプリングの一端が本体側に固
定されていた。In the conventional mechanism, one end of the spring biases the secondary throttle valve control lever in the closing direction of the secondary throttle valve, which suppresses the rotation of the secondary throttle valve until the primary throttle valve opens to a certain degree. It was fixed to the main body.
なお、本発明の目的とするところに踏み込んだものは見
当らないが、この種の機構として関連するものには例え
ば特公昭５１ ＝ １８０２５号、特公昭５２１９２５
６号等が挙げられる。Although I have not found anything that goes into the purpose of the present invention, related mechanisms of this type include, for example, Japanese Patent Publication No. 51 = 18025, Japanese Patent Publication No. 521925.
Examples include No. 6.
上記従来技術は１次側絞り弁の開度が一定開度に達し、
２次側絞り弁の回動を抑止している２次側絞り弁制御レ
バーの解放が始まる。いわゆる１次２次連動開度におい
てそれまで２次側絞り弁制御レバーが２次側絞り弁の回
動を抑止していた大きな閉止トルクが急激に１次側に移
行する。In the above conventional technology, the opening degree of the primary side throttle valve reaches a certain opening degree,
The secondary throttle valve control lever that suppresses the rotation of the secondary throttle valve begins to be released. At the so-called primary-secondary interlocking opening, the large closing torque that had previously been inhibited by the secondary throttle valve control lever from rotating the secondary throttle valve suddenly shifts to the primary side.
即ち、階段的に１次側戻しトルクが増加することにより
、１次側絞り弁開度の約中間から急激にアクセルペダル
が重くなるという問題があった。That is, as the primary side return torque increases in a stepwise manner, there is a problem in that the accelerator pedal suddenly becomes heavier from about the middle of the primary throttle valve opening.
本発明の目的は上記階段的１次側戻し１〜ルクの増加量
を低減することにある。An object of the present invention is to reduce the stepwise increase in the primary side return 1 to 1 torque.
上記目的は、２次側絞り弁に閉止力を与える２次側絞り
弁制御レバーのスプリングの一端を、１次側戻しスプリ
ングの荷重髪強くして補正した上で、１次側絞り弁の動
きと一体連動して回動する１次側レバーに固定すること
により達成される。The above purpose is to correct one end of the spring of the secondary throttle valve control lever that applies the closing force to the secondary throttle valve by increasing the load of the primary return spring, and then to move the primary throttle valve. This is achieved by fixing it to the primary lever that rotates in conjunction with the primary lever.
２次側絞り弁制御レバースプリングの２次側絞り弁閉止
方向付勢トルクは、」−次側絞り弁の全開付近は従来と
同等の大きさを与えられるが、１次側絞り弁が開くに従
って低下するので、２次側絞り弁制御レバーの解放が始
まる１次２次連ｉｆ！１１１３；１度においては初期ト
ルクの半分以下にすることができる。また、この位置の
１次側絞り弁戻し１−ルクを大きくしであるから段付き
感は更に軽減され、自動車の運転者のアクセルフィーリ
ングの円滑感を与えることができる。The biasing torque of the secondary throttle valve control lever spring in the direction of closing the secondary throttle valve is given the same magnitude as before when the downstream throttle valve is fully open, but increases as the primary throttle valve opens. As the flow decreases, the release of the secondary throttle valve control lever begins if! 1113; At one time, the torque can be reduced to less than half of the initial torque. In addition, since the primary side throttle valve return 1-lux at this position is increased, the stepped feeling is further reduced, and a smooth accelerator feeling can be given to the driver of the vehicle.
以下、本発明の一実施例を第１図〜第４図により説明す
る。An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
第１図は従来公知の複式気化器の２次弁制御機構を示す
。１欣側絞り弁戻しスプリング１．に抗してアクセルペ
ダル（図示せず）ｋ踏んで行く、即ちスロツｌ−ルレバ
ー２．，１次側絞り弁３．を回動させて行き一定開度Ｏ
に達すると、スロットルレバー２．の連結部（Ａ）４．
、が２次側絞り弁制御レバー５．の連結部（＋３）６．
に接触する。FIG. 1 shows a conventionally known secondary valve control mechanism of a dual carburetor. 1. Side throttle valve return spring 1. 2. Depress the accelerator pedal (not shown) against the throttle lever 2. , primary side throttle valve 3. Rotate to a constant opening degree O
When reaching the throttle lever 2. Connecting part (A)4.
, is the secondary throttle valve control lever 5. Connecting part (+3)6.
come into contact with.
更にアクセルペダルを踏み込むと、２次側絞り弁戻しス
プリング７、の戻し力が加わりつつスロットルレバー２
．と２次側絞り弁制御レバー５．は体回動し、２次側連
結レバー８０．２次側絞り弁９．に２次側絞り弁戻しス
プリング７、による閉止力から解放する。解放後の２次
側絞り弁９゜は、負圧ジェン１−１０．，１０’ 、、
ダイヤフラムスプリング１１６、ダイヤフラム１２．に
より制御される。When the accelerator pedal is further depressed, the return force of the secondary throttle valve return spring 7 is applied and the throttle lever 2
．． and secondary throttle valve control lever5. rotates, and the secondary side connecting lever 80. secondary side throttle valve 9. The secondary throttle valve is released from the closing force by the return spring 7. After release, the secondary throttle valve 9° is set to the negative pressure generator 1-10. ,10',,
Diaphragm spring 116, diaphragm 12. controlled by
ここで、１次側絞り弁３．にががる戻し１−ルクは第３
図の如くとなる。破線は２次側絞り弁戻しスプリング７
、がアクセル戻しトルク（即ち踏力）に与えるトルク変
化である。これによって実線の総合アクセル戻し１ヘル
クは２次側絞り弁９．解放直後、Ａだけ急激に上昇する
のである。Here, the primary side throttle valve 3. Nigaru return 1-Luku is the third
It will look like the figure. The broken line is the secondary throttle valve return spring 7
is the torque change given to the accelerator return torque (i.e., pedal force). As a result, one herk of total accelerator return as shown by the solid line corresponds to 9 seconds of the secondary throttle valve. Immediately after release, only A rises rapidly.
次に第２図において、本発明の一実施例を説明する。２
次側絞り弁戻しスプリング７′、を、２次側絞り弁制御
レバー５．に一端を、他端をスロットルレバー２．に固
定したことを特徴とする。Next, referring to FIG. 2, an embodiment of the present invention will be described. 2
the secondary throttle valve return spring 7', and the secondary throttle valve control lever 5'. one end to the throttle lever 2. and the other end to the throttle lever 2. It is characterized by being fixed at.
２次側絞り弁９．の閉止トルクは、１次側絞り弁３、の
開度が小さい始動時や暖機時及びアイ１〜ル時などでは
回転不整を来さぬよう、第３図のＡなる大きさでなけれ
ばならないが、解放される直前の高負荷運転条件ではむ
しろ弱めた方が１次２次つながり特性上好ましい。Secondary throttle valve9. The closing torque of the primary throttle valve 3 must be as large as A in Fig. 3 to prevent irregular rotation during startup, warm-up, and idle times when the opening degree of the primary throttle valve 3 is small. However, under high-load operating conditions immediately before release, it is preferable to weaken it in terms of primary and secondary connection characteristics.
従って第４図において、初期値として２次側絞り弁戻し
スプリング７′にＡなるトルクを与え、解放までの間減
少することは性能上差し支えない。Therefore, in FIG. 4, there is no problem in terms of performance if torque A is applied to the secondary throttle valve return spring 7' as an initial value and the torque decreases until it is released.
ただし、このトルクは１次側絞り弁戻しスプリング１．
の閉止トルクを弱めるように作用するから、安全」二、
最小トルクＣを確保すべく、１次側絞り弁戻しスプリン
グ１．は１点鎖線の如き特性となるよう変更する必要が
ある。However, this torque is due to the primary side throttle valve return spring 1.
2. Safety because it acts to weaken the closing torque of
In order to ensure the minimum torque C, the primary throttle valve return spring 1. needs to be changed so that it has the characteristics shown by the one-dot chain line.
本実施例によれば結果として実線の如き総合戻しトルク
特性となるが、Ａ＞Ｃとなり段付き感が大幅に緩和され
る効果がある。According to this embodiment, the overall return torque characteristic is as shown by the solid line, but A>C, which has the effect of significantly alleviating the stepped feeling.
〔発明の効果〕
本発明によれば、１次側絞り弁開度の約中間から急激Ｆ
こアクセルペダルが重くなるという問題を大幅に緩和で
きるので自動車の運転者にスムーズなアクセルフィーリ
ングを提供できる効果がある。[Effects of the Invention] According to the present invention, the F
This can significantly alleviate the problem of the accelerator pedal becoming heavy, and has the effect of providing a smooth accelerator feeling to the driver of the car.
第１図は従来公知の複式気化器の２次弁制御機構説明図
、第２図は本発明の一実施例を示す複式気化器の２次弁
制御機構説明図、第３図は第１図のアクセル戻し１−ル
ク特性説明図、第４図は第２図のアクセル戻しｌ−ルク
特性説明図である。
１、 １次側絞り弁戻しスプリング、２． スロワ１−
ルレバー、３． １次側絞り弁、４． ・連結部（Ａ）
、５．−２次側絞り弁制御レバー、６゜連結部（Ｂ）
、７．．７’ 、−２次側絞り弁戻しスプリング、８．
・・２次側連結レバー、９゜２次側絞り弁、１０．１０
’ ・・負圧ジェット、１１、 ダイヤフラムスプリ
ング、１２． ダイヤフラム。FIG. 1 is an explanatory diagram of a secondary valve control mechanism of a conventionally known dual-type carburetor, FIG. 2 is an explanatory diagram of a secondary valve control mechanism of a multiple-type carburetor showing an embodiment of the present invention, and FIG. 3 is a diagram similar to that shown in FIG. FIG. 4 is a diagram illustrating the accelerator release 1-lux characteristic of FIG. 2. 1. Primary side throttle valve return spring, 2. Thrower 1-
Lever, 3. Primary side throttle valve, 4.・Connection part (A)
,5. -Secondary throttle valve control lever, 6° connection (B)
,7. ．． 7', -Secondary side throttle valve return spring, 8.
...Secondary side connection lever, 9° secondary side throttle valve, 10.10
'...Negative pressure jet, 11. Diaphragm spring, 12. diaphragm.
Claims (1)
側絞り弁の一定開度まで２次側絞り弁の回動を抑止する
２次側絞り弁制御レバーを２次側絞り弁の閉方向に付勢
するスプリングの一端を一次側絞り弁の動きと連動して
回動する一次側レバーに固定したことを特徴とする複式
気化器の２次弁制御機構。 ２、特許請求の範囲第１項において、スプリングがねじ
りスプリングであることを特徴とする複式気化器の２次
弁制御機構。 ３、特許請求の範囲第１項において、スプリングが引つ
張りスプリングであることを特徴とする複式気化器の２
次弁制御機構。[Claims] 1. In a dual carburetor having a primary side and a secondary side, a secondary throttle valve control lever that suppresses rotation of the secondary throttle valve up to a certain opening degree of the primary throttle valve. A secondary valve control mechanism for a dual carburetor, characterized in that one end of a spring that biases the secondary throttle valve in the closing direction is fixed to a primary lever that rotates in conjunction with the movement of the primary throttle valve. . 2. The secondary valve control mechanism for a dual carburetor according to claim 1, wherein the spring is a torsion spring. 3. A compound carburetor according to claim 1, characterized in that the spring is a tension spring.
Next valve control mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17692088A JPH0227153A (en) | 1988-07-18 | 1988-07-18 | Mechanism for controlling secondary valve of duplex carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17692088A JPH0227153A (en) | 1988-07-18 | 1988-07-18 | Mechanism for controlling secondary valve of duplex carburetor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0227153A true JPH0227153A (en) | 1990-01-29 |
Family
ID=16022075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17692088A Pending JPH0227153A (en) | 1988-07-18 | 1988-07-18 | Mechanism for controlling secondary valve of duplex carburetor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0227153A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6355947B1 (en) | 1998-08-20 | 2002-03-12 | Nec Corporation | Heterojunction bipolar transistor with band gap graded emitter |
| JP2010285876A (en) * | 2009-06-09 | 2010-12-24 | Keihin Corp | Engine intake control device |
-
1988
- 1988-07-18 JP JP17692088A patent/JPH0227153A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6355947B1 (en) | 1998-08-20 | 2002-03-12 | Nec Corporation | Heterojunction bipolar transistor with band gap graded emitter |
| JP2010285876A (en) * | 2009-06-09 | 2010-12-24 | Keihin Corp | Engine intake control device |
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