JPS5893950A - Air intake control device at the time of deceleration - Google Patents
Air intake control device at the time of decelerationInfo
- Publication number
- JPS5893950A JPS5893950A JP56190773A JP19077381A JPS5893950A JP S5893950 A JPS5893950 A JP S5893950A JP 56190773 A JP56190773 A JP 56190773A JP 19077381 A JP19077381 A JP 19077381A JP S5893950 A JPS5893950 A JP S5893950A
- Authority
- JP
- Japan
- Prior art keywords
- intake passage
- negative pressure
- air intake
- air
- deceleration
- 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
- F02M23/00—Apparatus for adding secondary air to fuel-air mixture
- F02M23/04—Apparatus for adding secondary air to fuel-air mixture with automatic control
- F02M23/08—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus
- F02M23/085—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus specially adapted for secondary air admission during braking or travelling down steep slopes
-
- 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】
この発明は、副吸気通路を利用した減速時対策装置に関
し、副吸気通路を経て吸気通路中に２次吸気の投入を行
い、もって混合気の過濃化を防止する減速時板気制御装
置に関する。[Detailed Description of the Invention] The present invention relates to a deceleration countermeasure device using a sub-intake passage, which injects secondary intake air into the intake passage via the sub-intake passage, thereby preventing over-enrichment of the air-fuel mixture. This invention relates to a plate air control device during deceleration.
磯閣減速時の絞り弁急開時には、絞υ弁下流側の吸気室
内に一時的に高負圧が発生し、この負圧により低速燃料
がより多く吸出され、また吸気管壁の付着燃料が急激に
蒸発するため、混合気が過濃化する。Ikaku When the throttle valve opens suddenly during deceleration, high negative pressure is temporarily generated in the intake chamber downstream of the throttle valve, and this negative pressure causes more low-speed fuel to be sucked out, and also removes the fuel adhered to the intake pipe wall. Due to rapid evaporation, the air-fuel mixture becomes over-rich.
この不都合を解消すべく、従来、スロットルオープナや
スロットルポジショナ、そしてまた吸気マニホルド集合
部にミックスチーＶ・エヤ・コントロール・パルプを設
ける方式やその他の装置が案出されている。In order to solve this inconvenience, systems and other devices have been devised in the past in which a mix-ti-V air control pulp is provided in the throttle opener, throttle positioner, and also in the intake manifold gathering section.
しかし、従来の減速時対策装置直は、構造が複雑で、し
かも各気筒への２次吸気の分配投入の不均一が生じ、ま
た２次吸気投入作動時の応答性が不良である寺の不都合
があった。However, the conventional deceleration countermeasure device has a complicated structure, causes uneven distribution and input of secondary intake air to each cylinder, and has the disadvantage of poor responsiveness when the secondary intake air input is activated. was there.
そこでこの発明の目的は、上記従来の不具合を解決する
にある。つまり低負荷時の燃焼効率向上のために設けら
れた副吸気通路を利用して、減速時の吸気管負圧の弱化
および混合気の濃化を防止する減速時板気制御装置を提
供するにある。Therefore, an object of the present invention is to solve the above-mentioned conventional problems. In other words, the present invention provides a deceleration plate air control device that prevents the intake pipe negative pressure from weakening and the air-fuel mixture from enriching during deceleration by utilizing the auxiliary intake passage provided to improve combustion efficiency at low loads. be.
以下図面に基づいてこの発明の詳細な説明する。櫃→テ
場図において、２は主吸気通路、４は低負荷時のための
副吸気通路、８は吸気弁、９はベンチュリ、１０は吸気
弁座、 １２は燃焼室、Ｊ、４はシリンダヘッド、１６
はシリンダである。前記副吸気通路４は気化器絞り弁６
の位置する主吸気通路２壁に副流大開口４Ｎをその始端
として有している。The present invention will be described in detail below based on the drawings. In the diagram, 2 is the main intake passage, 4 is the auxiliary intake passage for low load, 8 is the intake valve, 9 is the venturi, 10 is the intake valve seat, 12 is the combustion chamber, J is the cylinder, 4 is the cylinder head, 16
is a cylinder. The sub-intake passage 4 is a carburetor throttle valve 6
The main intake passage 2 wall has a large side flow opening 4N as its starting end.
また、吸気弁座１０より上流で且つ該吸気弁座１０に近
接させて、副流用開口４ｔが前記主吸気通路２内に開口
され、前記副吸気通路４の終端とされる。Further, upstream from and close to the intake valve seat 10, a subflow opening 4t is opened into the main intake passage 2, and serves as the terminal end of the sub-intake passage 4.
この副吸気通路４の途中には、投入ボート１８ｐを設け
、この投入ボー） １８ ｐに連通させて２次吸気通路
ｔ８を設ける。そして、この２次吸気Ｊ［Ｔ回路１８の
途中にはＶＣＶ等の負圧制御弁２０全介設し、このダイ
ヤフラム室ｚ２は負圧通路２４を介して、絞り弁６下流
仙ｊの主吸気通路２に設けた負圧ボート２４ｐに連通す
る。そして、前記大気通路１８の始端１８１１は大気に
開口させるか、あるいはまた自回に一点＠線で示す通路
１９により、ベンチュリ９下流側且つ絞り弁６上流側に
設けた２次吸気投入口１９１に連通ずる。これにより、
２次吸気通路１８には空気、あるいはまた希薄な混合気
が導入される態勢となる。A charging boat 18p is provided in the middle of this sub-intake passage 4, and a secondary intake passage t8 is provided in communication with this charging boat 18p. A negative pressure control valve 20 such as a VCV is completely interposed in the middle of this secondary intake J[T circuit 18, and this diaphragm chamber z2 is connected to the main intake of the throttle valve 6 downstream side J via a negative pressure passage 24. It communicates with a negative pressure boat 24p provided in the passage 2. The starting end 1811 of the atmospheric passage 18 is opened to the atmosphere, or is connected to a secondary intake inlet 191 provided downstream of the venturi 9 and upstream of the throttle valve 6 through a passage 19 indicated by a dot @ line. Communicate. This results in
The secondary intake passage 18 is ready to be introduced with air or a lean mixture.
次に作用について説明する。機関の減速時操作により、
絞り弁６下流の主吸気通路２には高負圧が発生し、これ
により低速燃料の吸出し、壁面付着燃料の蒸発等によシ
混合気の濃化が生ぜんとする。しかし、この発明におい
ては、この高負圧が負圧ボート２４ｐを経て負圧制御弁
２０のダイヤフラム室２２に伝えられ、これにより２次
吸気通路１８には空気あるいは混合気などの吸気が流入
し、投入ポー） 、ｉ、８ ｐから副吸気通路４に２次
吸気が投入される。このため主吸気通路２の篩負圧が弱
められ。Next, the effect will be explained. By operating the engine during deceleration,
A high negative pressure is generated in the main intake passage 2 downstream of the throttle valve 6, which causes the mixture to become richer due to the suction of low-speed fuel and the evaporation of fuel adhering to the wall surface. However, in the present invention, this high negative pressure is transmitted to the diaphragm chamber 22 of the negative pressure control valve 20 via the negative pressure boat 24p, so that intake air such as air or air mixture flows into the secondary intake passage 18. , input port), i, 8 Secondary intake air is introduced into the sub-intake passage 4 from p. Therefore, the sieve negative pressure in the main intake passage 2 is weakened.
且つ空気等が２次吸気として投入される場合は。And when air etc. is injected as secondary intake air.
混合気のリーン化がより一層促進され、混合気の濃化に
よる不都合が防止される。The leanness of the air-fuel mixture is further promoted, and inconveniences caused by enrichment of the air-fuel mixture are prevented.
以上の説明から明らかなようにこの発明によれば以下の
如き効果を得る。As is clear from the above description, the present invention provides the following effects.
（１）、負圧制御弁により、減速時に副吸気通路を介し
て２次吸気を燃焼室内へ投入することができるので、排
気ガス中の有害成分たるＨＣの排出を低減し得る。(1) The negative pressure control valve allows secondary intake air to be introduced into the combustion chamber through the auxiliary intake passage during deceleration, thereby reducing the emission of HC, which is a harmful component in the exhaust gas.
（２）、既設の副吸気通路を利用して２次吸気を燃焼室
へ投入する構成としたので、従来装置に比し吸気制御装
置の構造が簡単となり、故障率、製作コストを低減し得
る。(2) Since the configuration is such that the secondary intake air is injected into the combustion chamber using the existing auxiliary intake passage, the structure of the intake control device is simpler than that of conventional devices, reducing failure rates and manufacturing costs. .
（３）、また、主吸気通路内の負圧により負圧制御弁を
作動させ、減速時の吸気供給量の制御を行う構成とした
ので、負圧に応じた好ましい２次吸気量の供給を確実に
行い得る。(3) In addition, since the negative pressure control valve is operated by the negative pressure in the main intake passage to control the intake air supply amount during deceleration, it is possible to supply a preferable secondary intake air amount according to the negative pressure. It can definitely be done.
（４）、多機筒機関の場合、各気筒への２次吸気量の分
配不均一が少なく、従って従来の如く分配性能を考慮す
るための設計上の制約が生じない。(4) In the case of a multi-cylinder engine, there is little non-uniformity in the distribution of the secondary intake air amount to each cylinder, and therefore there are no design restrictions in consideration of distribution performance as in the past.
（５）、２次吸気は吸気弁近傍の副流用開口から噴出さ
れるので、２次吸気投入時の応答性が良好で効果的であ
る。(5) Since the secondary intake air is blown out from the side flow opening near the intake valve, the response when the secondary intake air is introduced is good and effective.
（６）、また２上述の如く構成したので２次吸気の投入
量の制御が簡単且つ容易である。(6) and 2. Since the configuration is as described above, the amount of secondary intake air input can be easily and easily controlled.
である。It is.
図において、２は主吸気通路、４は副吸気通路。In the figure, 2 is a main intake passage, and 4 is a sub-intake passage.
４”１は副流大開口、４ｔは副流用開口、６は気化器絞
り弁、１８は２次吸気通路、２０は負圧ｆｌｊｌｌ餌１
弁。4"1 is the side flow large opening, 4t is the side flow opening, 6 is the carburetor throttle valve, 18 is the secondary intake passage, 20 is the negative pressure fljll bait 1
valve.
そして２４は負圧通路である。And 24 is a negative pressure passage.
代理人 弁理士 西 郁 義 美Agent Patent Attorney Ikuyoshi Nishi
Claims (1)
流側の前記主吸気通路内に副流山開口を前記副吸気通路
の終端として設け、この副吸気通路途中に投入ボートを
設け、この投入ボートに２次吸気通路を連設し、この２
次吸気通路途中には吸気管負圧により開弁される負圧制
御弁を設けたことを特徴とする減速時板気制御装置。A large opening is provided as the starting end of the auxiliary intake passage, a auxiliary flow mountain opening is provided as the end of the auxiliary intake passage in the main intake passage upstream from the intake valve seat, and a charging boat is provided in the middle of the auxiliary intake passage. A secondary intake passage is installed in the boat, and these two
A plate air control device during deceleration, characterized in that a negative pressure control valve that is opened by negative pressure in the intake pipe is provided in the middle of the next intake passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56190773A JPS5893950A (en) | 1981-11-30 | 1981-11-30 | Air intake control device at the time of deceleration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56190773A JPS5893950A (en) | 1981-11-30 | 1981-11-30 | Air intake control device at the time of deceleration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5893950A true JPS5893950A (en) | 1983-06-03 |
Family
ID=16263480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56190773A Pending JPS5893950A (en) | 1981-11-30 | 1981-11-30 | Air intake control device at the time of deceleration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5893950A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60157968U (en) * | 1984-03-30 | 1985-10-21 | スズキ株式会社 | After-fire prevention device for internal combustion engines |
-
1981
- 1981-11-30 JP JP56190773A patent/JPS5893950A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60157968U (en) * | 1984-03-30 | 1985-10-21 | スズキ株式会社 | After-fire prevention device for internal combustion engines |
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