JPH01190927A - Air quantity controller for internal combustion engine - Google Patents
Air quantity controller for internal combustion engineInfo
- Publication number
- JPH01190927A JPH01190927A JP63010715A JP1071588A JPH01190927A JP H01190927 A JPH01190927 A JP H01190927A JP 63010715 A JP63010715 A JP 63010715A JP 1071588 A JP1071588 A JP 1071588A JP H01190927 A JPH01190927 A JP H01190927A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- throttle valve
- temperature
- internal combustion
- control device
- 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 description 6
- 239000000446 fuel Substances 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/08—Copolymers of ethylene
- B29K2023/086—EVOH, i.e. ethylene vinyl alcohol copolymer
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、内燃機関の空気量制御装置に係り、特に、吸
気管の途中に吸気通路の断面積を制御して吸入気量を制
御する絞り弁を有するこの種の装置に好適な空気量制御
装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an air amount control device for an internal combustion engine, and in particular, to an air amount control device for an internal combustion engine, and in particular to an air amount control device for controlling the amount of intake air by controlling the cross-sectional area of an intake passage in the middle of an intake pipe. The present invention relates to an air amount control device suitable for this type of device having a throttle valve.
（従来の技術〕
特公昭５７−５１５３４号公報等で知られる従来の空気
量制御装置の絞り弁は１機関が停止すると戻しスプリン
グによって全開の状態に制御されるにれは特公昭５７−
２８８３７号公報で知られるような。(Prior Art) The throttle valve of the conventional air flow control device known from Japanese Patent Publication No. 51534/1983 is controlled to be fully open by a return spring when one engine stops.
As known from Publication No. 28837.
アクセル踏み込み量に応じて電気的に回転駆動されるア
クチュエータで絞り弁の開度を制御するものにおいても
機関の停止時にはアクチュエータ自身あるいは戻しスプ
リングによって絞り弁は全開位置に制御されるよう構成
されている。Even in the case where the opening of the throttle valve is controlled by an actuator that is electrically driven to rotate according to the amount of accelerator depression, the throttle valve is controlled to the fully open position by the actuator itself or a return spring when the engine is stopped. .
上記従来技術は、機関停止時に絞り弁下流の吸気マニホ
ールド内に燃料蒸気が発生する点について配慮されてお
らず、このため機関の再始動時にこの燃料蒸気がシリン
ダに吸入さ九、始動混合比が最適値よりも高くなるため
に、再始動性を悪化させるというような問題が発生して
いた。The above conventional technology does not take into consideration the fact that fuel vapor is generated in the intake manifold downstream of the throttle valve when the engine is stopped, and therefore, when the engine is restarted, this fuel vapor is sucked into the cylinder and the starting mixture ratio is changed. Since the value is higher than the optimum value, problems such as deterioration of restartability have occurred.
本発明の目的は、機関の停止時に絞り弁下流のマニホー
ルド内に発生した燃料蒸気を大気中に放出して、上記問
題を解決することにある。An object of the present invention is to solve the above problem by releasing fuel vapor generated in the manifold downstream of the throttle valve into the atmosphere when the engine is stopped.
上記目的は、機関の停止を感知して出力発生する機関停
止検出手段と、この検出手段の出力によって駆動され絞
り弁を所定の開度開く絞り弁強制開き手段を設けること
によ達成される。The above object is achieved by providing an engine stop detection means that detects the stoppage of the engine and generates an output, and a throttle valve forced opening means that is driven by the output of the detection means and opens the throttle valve to a predetermined opening.
この様に構成された空気量制御装置は、機関が停止する
とこれを検出して機関停止手段から出力が発生する。こ
の出力によって絞り弁強制開き手段が作動して全開状態
の絞り弁を所定開度開く。The air amount control device configured in this manner detects when the engine stops and generates an output from the engine stopping means. This output operates the throttle valve forced opening means to open the fully open throttle valve to a predetermined opening degree.
これによって、絞り弁下流のマニホールドがエアクリー
ナを介して大気に開放され、そこに溜まっていた燃料蒸
気は大気中に放散される。As a result, the manifold downstream of the throttle valve is opened to the atmosphere via the air cleaner, and the fuel vapor accumulated there is dissipated into the atmosphere.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
第１図は、複式気化器において、ソレノイドによるスロ
ットルオープナを設けた実施例である。FIG. 1 shows an embodiment in which a solenoid-based throttle opener is provided in a dual carburetor.
絞り弁の通常の動作をまず簡単に説明する。絞り弁５は
、アクセルペダル１１と連動されており、アクセルの踏
み込み量に応じて通気断面積を変化させるようになって
いる。また、二次側絞り弁９はリンクを介して二次側絞
り弁５と連動しており、−次側絞り弁がある一定開度以
上になると二次側も開き始めるようになっている。さら
に機関が停止すれば、戻しばね１１によって全開の状態
となる。First, the normal operation of the throttle valve will be briefly explained. The throttle valve 5 is interlocked with the accelerator pedal 11, and changes the cross-sectional area of the ventilation according to the amount of depression of the accelerator. Further, the secondary throttle valve 9 is linked to the secondary throttle valve 5 via a link, and when the downstream throttle valve reaches a certain opening degree or more, the secondary side also starts to open. Further, when the engine stops, the return spring 11 returns to the fully open state.
次に、ソレノイドによる絞り弁強制開き手段としてのス
ロットルオープナ−について説明する。Next, a throttle opener as means for forcibly opening a throttle valve using a solenoid will be explained.
ソレノイドはエンジン回転数センサ３と接属されており
、エンジンが回っている場合は、プランジャが吸引され
、感温伸縮体１３が伸びている状態でも絞り弁に何の影
響も与えないようになっている。The solenoid is connected to the engine speed sensor 3, and when the engine is running, the plunger is sucked, so that even when the thermosensitive elastic body 13 is extended, it does not have any effect on the throttle valve. ing.
一方、エンジンが停止すれば、ソレノイドの電流はＯＦ
Ｆとなりプランジャ４が伸び、高温の場合には感温伸縮
体１３が伸びるため絞り弁が開き、温度が下がれば全開
の状態になるような機構とする。On the other hand, if the engine stops, the solenoid current is OFF.
The mechanism is such that the plunger 4 extends, and when the temperature is high, the temperature-sensitive expandable body 13 extends and the throttle valve opens, and when the temperature drops, it becomes fully open.
本実施例によれば、エンジンが高温で停止した場合にア
二ホールド内に溜まった燃料蒸気をエアクリーナーを介
して大気中に逃すことができ、再始動性の悪化防止に効
果がある。According to this embodiment, when the engine is stopped at a high temperature, the fuel vapor accumulated in the anifold can be released into the atmosphere through the air cleaner, which is effective in preventing deterioration in restartability.
第３図は、感温伸縮体及びダイヤフラムを用いてスロッ
トルオープナ−を機成したものであり、機関運転時には
、負圧によってダイヤプラムが引かれるため、絞り弁の
通常の動作を妨げない。FIG. 3 shows a throttle opener constructed using a temperature-sensitive expandable body and a diaphragm. During engine operation, the diaphragm is pulled by negative pressure, so it does not interfere with the normal operation of the throttle valve.
また第４図は、温度センサ１９及びモータ１８゜カム１
７を用いてスロットルオープナ−を構成したものである
。Figure 4 also shows the temperature sensor 19 and motor 18° cam 1.
7 is used to construct a throttle opener.
本案明によれば、機関の停止時に作動する絞り弁強制開
き手段によって機関の停止時に絞り弁を強制的に所定開
度開くので再始動の防げとなる燃料蒸気を、絞り弁下流
のア二ホールドからエアクリーナを介して大気中に逃す
ことができ、エンジンの再始動性を悪化させることがな
い。According to the present invention, the throttle valve forced opening means that operates when the engine stops opens the throttle valve to a predetermined opening when the engine stops, so that the fuel vapor that prevents restarting is transferred to the anifold downstream of the throttle valve. can be released into the atmosphere through the air cleaner, without deteriorating the restartability of the engine.
第１図は本発明の一実施例を示すスロットルオープナ−
系構造図、第２図はダイヤフラム、感温伸縮体を用いた
実施例を示す図、第３図はモータ。
カムを用いた実施例を示す図である。
１・・・スロットルオープナ、２・・・コンピュータ、
３・・・回転数検知機、４・・・プランジャ、５・・・
１次側スロットルバルブ、６・・・スロットルレバー、
７・・・気化器、８・・・アクセル戻しバネ、９・・・
２次側スロットルバルブ、１０・・・リンク、１１・・
・アクセルペダル、１２・・・負圧室、１３・・・感温
伸縮体、１４・・・ダイヤフラム、１７・・・カム、１
８・・・モータ。
第１図
第２図FIG. 1 shows a throttle opener showing an embodiment of the present invention.
System structure diagram, Figure 2 is a diagram showing an example using a diaphragm and temperature-sensitive elastic body, and Figure 3 is a motor. It is a figure showing an example using a cam. 1... Throttle opener, 2... Computer,
3... Rotation speed detector, 4... Plunger, 5...
Primary side throttle valve, 6...throttle lever,
7... Carburetor, 8... Accelerator return spring, 9...
Secondary throttle valve, 10... link, 11...
・Accelerator pedal, 12... Negative pressure chamber, 13... Temperature-sensitive elastic body, 14... Diaphragm, 17... Cam, 1
8...Motor. Figure 1 Figure 2
Claims (1)
制御すべく吸気管の途中にその通路断面積を制御する絞
り弁を有する内燃機関の空気量制御装置において、機関
温度を感知し、ある一定温度以上で、機関の停止時に強
制的に絞り弁をアイドル開度以上開く機構を備えたこと
を特徴とする内燃機関の空気量制御装置。 ２、特許請求の範囲第１項において、前記強度制開き機
構によつて開かれた絞り弁が機関の温度が一定温度より
低くなつた場合に元の状態にもどるような手段を備えた
ことを特徴とする内燃機関の空気量制御装置。[Claims] 1. In an air amount control device for an internal combustion engine, which has a throttle valve located in the middle of an intake pipe to control the cross-sectional area of its passage in order to control the amount of air taken into the engine according to the operating state of the engine. An air amount control device for an internal combustion engine, comprising a mechanism that senses the engine temperature and, when the engine temperature exceeds a certain level, forcibly opens a throttle valve to an idle opening degree or more when the engine is stopped. 2. Claim 1 provides that the throttle valve opened by the strength opening control mechanism is provided with means for returning to its original state when the temperature of the engine becomes lower than a certain temperature. Features: Air flow control device for internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63010715A JPH01190927A (en) | 1988-01-22 | 1988-01-22 | Air quantity controller for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63010715A JPH01190927A (en) | 1988-01-22 | 1988-01-22 | Air quantity controller for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01190927A true JPH01190927A (en) | 1989-08-01 |
Family
ID=11757997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63010715A Pending JPH01190927A (en) | 1988-01-22 | 1988-01-22 | Air quantity controller for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01190927A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003041975A (en) * | 2001-08-01 | 2003-02-13 | Nippon Soken Inc | Discharge preventing device for hydrocarbon in intake system for internal combustion engine |
| US7213396B2 (en) * | 2002-02-14 | 2007-05-08 | Robert Bosch Gmbh | Method and device for operating an internal combustion engine |
-
1988
- 1988-01-22 JP JP63010715A patent/JPH01190927A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003041975A (en) * | 2001-08-01 | 2003-02-13 | Nippon Soken Inc | Discharge preventing device for hydrocarbon in intake system for internal combustion engine |
| US7213396B2 (en) * | 2002-02-14 | 2007-05-08 | Robert Bosch Gmbh | Method and device for operating an internal combustion engine |
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