JPS6220363B2 - - Google Patents
Info
- Publication number
- JPS6220363B2 JPS6220363B2 JP60097786A JP9778685A JPS6220363B2 JP S6220363 B2 JPS6220363 B2 JP S6220363B2 JP 60097786 A JP60097786 A JP 60097786A JP 9778685 A JP9778685 A JP 9778685A JP S6220363 B2 JPS6220363 B2 JP S6220363B2
- Authority
- JP
- Japan
- Prior art keywords
- throttle valve
- intake passage
- main body
- wall
- combustion products
- 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.)
- Expired
Links
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims 1
- 239000004519 grease Substances 0.000 description 6
- 238000011109 contamination Methods 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1005—Details of the flap
- F02D9/101—Special flap shapes, ribs, bores or the like
- F02D9/1015—Details of the edge of the flap, e.g. for lowering flow noise or improving flow sealing in closed flap position
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は燃料噴射装置に用いられる絞弁組立体
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a throttle valve assembly used in a fuel injection device.
一般に燃料噴射装置に用いられる絞弁組立体は
例えば特開昭52−90732号公報や特開昭52−
135934号公報に見られるように、吸気通路を形成
する本体に絞弁軸を軸支せしめ、この絞弁軸に絞
弁を支持させるように構成されていた。
Throttle valve assemblies generally used in fuel injection devices are disclosed in, for example, JP-A-52-90732 and JP-A-52-90732.
As seen in Japanese Patent No. 135934, a throttle valve shaft is pivotally supported by a main body forming an intake passage, and the throttle valve is supported by the throttle valve shaft.
そして、このような絞弁組立体においてはエン
ジンの作動中に発生するバツクフアイヤや、ブロ
ーバイガスの流入によつて、燃焼媒や粘着性物質
等の燃焼生成物が逆流してくる現象がある。 In such a throttle valve assembly, there is a phenomenon in which combustion products such as combustion media and sticky substances flow back due to the backfire generated during engine operation and the inflow of blow-by gas.
ところで、この燃焼生成物が逆流してくると絞
弁の上流に開口している負圧信号孔等が汚染さ
れ、はなはだしい時には負圧信号孔が閉塞される
という問題が生じた。 By the way, when the combustion products flow back, the negative pressure signal hole etc. which are open upstream of the throttle valve are contaminated, and in severe cases, the negative pressure signal hole is blocked.
本発明の目的は絞弁上流の負圧信号孔が燃焼生
成物で汚染されるのを抑制することにある。
An object of the present invention is to suppress contamination of the negative pressure signal hole upstream of the throttle valve with combustion products.
本発明の特徴は、絞弁のエンジン側の面に燃焼
生成物が通過するのを阻止する物質を塗布したと
ころにある。
A feature of the present invention is that the engine-side surface of the throttle valve is coated with a substance that prevents combustion products from passing through.
この構成によれば、燃焼生成物が逆流してきて
も絞弁上流に吹き抜けることが少なくなり負圧信
号孔等の汚染が抑制されるものである。 According to this configuration, even if combustion products flow backward, they are less likely to blow through to the upstream side of the throttle valve, thereby suppressing contamination of the negative pressure signal hole and the like.
以下図面に従い本発明の一実施例を説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例である燃料噴射装置
用の絞弁組立体の縦断面図である。 FIG. 1 is a longitudinal sectional view of a throttle valve assembly for a fuel injection device, which is an embodiment of the present invention.
本体１０内の吸気通路１２には絞弁軸１４に取
り付けられた絞弁１６が設置され、その下流には
図示しない燃料噴射弁が設置されている。 A throttle valve 16 attached to a throttle valve shaft 14 is installed in the intake passage 12 in the main body 10, and a fuel injection valve (not shown) is installed downstream of the throttle valve 16.
また絞弁１６を迂回するアイドル空気通路１８
が本体１０内に形成され、アイドルホール２０の
開口面積を調節する調整ねじ２２が設置されてい
る。 The idle air passage 18 also bypasses the throttle valve 16.
is formed in the main body 10, and an adjustment screw 22 for adjusting the opening area of the idle hole 20 is installed.
本体１０の壁面には最下位置の負圧検知孔２４
が設けてある。この場合は絞弁１６の下面および
その下流側の壁面にシリコングリース２６を塗布
してあるので、アイドル運転時に必要な空気量は
第１図に示すアイドル空気通路１８から供給され
る。バツクフアイヤー等が生ずると、逆流した燃
焼生成物はシリコングリース２６等に付着する
が、シリコングリース２６は軟性であるので、絞
弁１６の回転に支障を来すことはない。 There is a negative pressure detection hole 24 at the lowest position on the wall of the main body 10.
is provided. In this case, since silicone grease 26 is applied to the lower surface of the throttle valve 16 and the wall surface on the downstream side thereof, the amount of air required during idle operation is supplied from the idle air passage 18 shown in FIG. When a backfire or the like occurs, the combustion products flowing back adhere to the silicone grease 26, etc., but since the silicone grease 26 is soft, it does not interfere with the rotation of the throttle valve 16.
このシリコングリース２６は絞弁１６がアイド
ル開度にあるときは、積極的に絞弁１６と本体１
０の隙間２８を塞いでバツクフアイヤー時の逆流
を絞弁１６の下面で阻止しているともいえる。し
たがつて、絞弁１６の上流の汚染は防止される。 When the throttle valve 16 is in the idle opening position, this silicone grease 26 is actively applied to the throttle valve 16 and the main body 1.
It can be said that the lower surface of the throttle valve 16 blocks the gap 28 at 0 and prevents backflow during backfire. Contamination upstream of the throttle valve 16 is therefore prevented.
本実施例は、絞弁の下面およびその付近の壁面
に難燃性のシリコングリースの塗布することによ
り、絞弁の作動を円滑にすると共に、バツクフア
イヤーが生じても絞弁より上流側を汚染すること
を防ぐという効果が得られる。 In this example, flame-retardant silicone grease is applied to the lower surface of the throttle valve and the wall surface in the vicinity to ensure smooth operation of the throttle valve and prevent contamination of the upstream side of the throttle valve even if backfire occurs. This has the effect of preventing this.
以上の通り、本発明によれば燃焼生成物による
負圧信号孔の汚染を抑制できるものである。
As described above, according to the present invention, contamination of the negative pressure signal hole by combustion products can be suppressed.
第１図は絞弁組立体の断面図、第２図は本発明
の一実施例になる絞弁組立体の要部断面図であ
る。
１０……本体、１２……吸気通路、１４……絞
弁軸、２４……負圧信号孔、２６……グリース。
FIG. 1 is a sectional view of a throttle valve assembly, and FIG. 2 is a sectional view of essential parts of a throttle valve assembly according to an embodiment of the present invention. 10... Main body, 12... Intake passage, 14... Throttle valve shaft, 24... Negative pressure signal hole, 26... Grease.
Claims (1)
体に形成された吸気通路を横切る絞弁軸と、前記
絞弁軸に支持され前記吸気通路を流れる吸気の量
を制御する絞弁とより構成された燃料噴射装置に
用いられる絞弁組立体において、前記絞弁が全閉
状態に近づいた時、絞弁と吸気通路内壁との間の
間隙を通つて燃焼生成物が逆流するのを阻止すべ
く、この間隙を閉塞する物質を絞弁のエンジン側
の面、及びその付近の吸気通路内壁に塗布したこ
とを特徴とする絞弁組立体。1 A throttle valve shaft supported by a wall of the main body and crossing an intake passage formed in the main body, and a throttle valve supported by the throttle valve shaft and controlling the amount of intake air flowing through the intake passage. In the throttle valve assembly used in the fuel injection device configured, when the throttle valve approaches a fully closed state, combustion products are prevented from flowing back through the gap between the throttle valve and the inner wall of the intake passage. A throttle valve assembly characterized in that a substance that closes this gap is applied to the engine-side surface of the throttle valve and the inner wall of the intake passage in the vicinity thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9778685A JPS618431A (en) | 1985-05-10 | 1985-05-10 | Throttle valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9778685A JPS618431A (en) | 1985-05-10 | 1985-05-10 | Throttle valve assembly |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5872780A Division JPS56156460A (en) | 1980-05-06 | 1980-05-06 | Air valve for injection fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS618431A JPS618431A (en) | 1986-01-16 |
| JPS6220363B2 true JPS6220363B2 (en) | 1987-05-07 |
Family
ID=14201495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9778685A Granted JPS618431A (en) | 1985-05-10 | 1985-05-10 | Throttle valve assembly |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS618431A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6165292A (en) | 1990-12-18 | 2000-12-26 | Advanced Cardiovascular Systems, Inc. | Superelastic guiding member |
| FR2793539B1 (en) * | 1999-05-10 | 2001-07-27 | Mark Iv Systemes Moteurs Sa | VALVE DEVICE, INTAKE MANIFOLD COMPRISING AT LEAST ONE SUCH DEVICE AND ITS MANUFACTURING METHOD |
| KR20030045523A (en) * | 2001-12-04 | 2003-06-11 | 대동모벨시스템 주식회사 | Coating method of impurities accumulation prevention layer for a automobile idle speed control actuator |
| GB0313817D0 (en) * | 2003-06-16 | 2003-07-23 | Delphi Tech Inc | Flap valve assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54105318U (en) * | 1978-01-06 | 1979-07-25 |
-
1985
- 1985-05-10 JP JP9778685A patent/JPS618431A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS618431A (en) | 1986-01-16 |
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