JPS5853671A - Cooling device for fuel injection valve arranged to internal combustion engine with suction pipe - Google Patents
Cooling device for fuel injection valve arranged to internal combustion engine with suction pipeInfo
- Publication number
- JPS5853671A JPS5853671A JP15529182A JP15529182A JPS5853671A JP S5853671 A JPS5853671 A JP S5853671A JP 15529182 A JP15529182 A JP 15529182A JP 15529182 A JP15529182 A JP 15529182A JP S5853671 A JPS5853671 A JP S5853671A
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- air
- fuel injection
- injection valve
- 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
- 239000000446 fuel Substances 0.000 title claims description 32
- 238000002347 injection Methods 0.000 title claims description 22
- 239000007924 injection Substances 0.000 title claims description 22
- 238000002485 combustion reaction Methods 0.000 title claims description 21
- 238000001816 cooling Methods 0.000 title claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/047—Injectors peculiar thereto injectors with air chambers, e.g. communicating with atmosphere for aerating the nozzles
-
- 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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating means
- F02M53/08—Injectors with heating, cooling, or thermally-insulating means with air cooling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、吸気管を備えた内燃機関に配置された燃料噴
射弁の冷却装置であって、冷却される燃料噴射弁が部分
的に空気室によって取囲まれていて、該空気室に空気導
管が開口している形式のものに関する。燃料噴射弁を空
気ジャケットで取囲むことは既に公知であり、この場合
空気ジャケットの空気は、噴射すべき燃料に合わせて噴
射燃料の調製のために役立つ。しかしながらこの場合の
欠点として次のことが挙げられる。すなわち、内燃機関
の停止後に燃料噴射弁及び燃料導管内の燃料が蒸気泡を
形成する程に加熱し、これによって新たな始動に際して
困難が生じる。それというのは、との蒸気泡が燃料噴射
弁を介して噴射されることによってまず初め点火不能な
混合気が生ぜしめられるからである。そこで５機関室・
化冷却するために内燃機関の停止後に所定の時間冷却器
のファンを回°転させることが既に提案されている。し
かしながら、ファンを駆動するのに必要な電流は・ζツ
テリーを非所望に負荷する。DETAILED DESCRIPTION OF THE INVENTION The present invention is a cooling device for a fuel injection valve disposed in an internal combustion engine equipped with an intake pipe, in which the fuel injection valve to be cooled is partially surrounded by an air chamber. , in which an air conduit opens into the air chamber. It is already known to surround fuel injection valves with an air jacket, the air of the air jacket serving for adjusting the injection fuel to the fuel to be injected. However, the disadvantages in this case include the following. That is, after the internal combustion engine has been shut down, the fuel in the fuel injection valve and the fuel line heats up to such an extent that it forms vapor bubbles, which creates difficulties during a new start. This is because the vapor bubbles injected via the fuel injection valve initially create a mixture that cannot be ignited. There, 5 engine rooms
It has already been proposed to rotate the cooler fan for a predetermined period of time after the internal combustion engine has stopped in order to cool the internal combustion engine. However, the current required to drive the fan undesirably loads the current.
空気導管に、内燃機関の停止後に所定の条件に関連して
空気を該空・気導管を介して空気室に搬送する送風機が
配置されていることを特徴とする本発明による、吸気管
を備えた内燃機関に配置された燃料噴射弁の冷却装置に
は、公知のものに比べて次の利点がある。すなわち本発
明の冷却装置は、高い製作費をかけることなくしかも僅
かな消費電流で内燃機関の停止後に燃料噴射弁を冷却す
ることができ、これによって燃料の蒸発が回避され、ひ
いては内燃機関の迅速かう確実な始動が保証される。An intake pipe according to the invention, characterized in that a blower is arranged in the air conduit, which conveys air through the air conduit to the air chamber in accordance with predetermined conditions after the internal combustion engine has stopped. A cooling device for a fuel injection valve disposed in an internal combustion engine has the following advantages over known devices. In other words, the cooling device of the present invention can cool the fuel injector after the internal combustion engine has stopped without requiring high manufacturing costs and with a small amount of current consumption, thereby avoiding fuel evaporation and, in turn, quickly cooling the internal combustion engine. Such reliable starting is guaranteed.
次に図面につき本発明の詳細な説明する。The invention will now be described in detail with reference to the drawings.
図面において符号１で示されている吸気管には、矢印の
方向で内燃機関によって吸込まれる空気がチョーク・ζ
ルブ２を介して流入する。吸気管１は捕集吸気管３に開
口し、この捕集吸気管４からは、各１つの吸気弁６を備
えた各シリンダ５に通じている単一吸気管４が分岐して
いる。吸気弁６のすぐ上流には燃料噴射弁８が配置され
ており、この燃料噴射弁８によって燃料は吸気弁６のす
ぐ近くにおいて噴射可能である。In the intake pipe indicated by the reference numeral 1 in the drawing, the air drawn in by the internal combustion engine in the direction of the arrow is connected to the choke ζ
It flows in through Lube 2. The intake pipe 1 opens into a collection intake pipe 3 from which a single intake pipe 4 branches off, leading to each cylinder 5 with an intake valve 6 in each case. A fuel injection valve 8 is disposed immediately upstream of the intake valve 6, and fuel can be injected in the immediate vicinity of the intake valve 6 by this fuel injection valve 8.
燃料噴射弁８には周知の形式で接続管片９を介して、図
示されていない燃料配量弁によって内燃機関の運転条件
に応じて配量される燃料が供給される。燃料噴射弁８は
接続管片９の近くで周囲をシールされて保持体１０内を
案内されている。保持体１０はつば１１で単−吸気管牛
の段部１２に接触しており、保持体ｌ○の鉢形部分１３
は空気室１４を形成しながら間隔をおいて燃料噴射弁８
を取囲んでいる。鉢形部分１３の底部１５には、燃料噴
射弁８の噴射方向に対して同心的に延びている流出開口
１６が形成されている。空気室１４には空気導管１８が
接続されているので、噴射される燃料は燃料噴射弁８の
端面と保持体１ｏの底部１５との間で空気にさらされ、
これによってあらかじめ調製されて単一吸気管４に噴射
される。空気導管１８は・−チョークノ々ルブ２の上流
で吸気管１から分岐しており、この結果内燃機関の運転
中は圧力降下に基づいてチョークノ々ルブ２上流の吸気
管１から流出開口１６に向かって自動的な空気搬送が行
なわれ、これによって、噴射される燃料の調製はさらに
改善される。空気導管１８における絞り箇所１９及び（
又は）絞シ箇所２０は、空気導管１８を介して流れる空
気量を規定するために働く。本発明によれば空気導管１
８に、電７気的に駆動されかつ電子制御装置２３によっ
て制御される送風機２２が配置されている。送風機２２
の制御はこの場合、温度感知器２４の測定値が電子制御
装置２３に送られることによって、燃料噴射弁８におけ
る温度の考慮下で行なわれる。送風機２２の制御はまた
例えば、電子制御装置２３に設けられたＲＣ素子のよう
な時限素子によっても行なわれ得る。送風機２２の上流
において空気導管１８′（破線参照）が、チョていても
よい。■実施例では送風機２ンは内燃機関運転時には稼
動されず、内燃機関の停止時に初めて、つまり点火スイ
ッチ２５の開放時に。The fuel injection valve 8 is supplied in a known manner via a connecting pipe 9 with fuel, which is metered in dependence on the operating conditions of the internal combustion engine by means of a fuel metering valve (not shown). The fuel injection valve 8 is guided in a holder 10 in a sealed manner around the circumference in the vicinity of the connecting pipe 9 . The holder 10 is in contact with the step 12 of the single intake pipe with the collar 11, and the bowl-shaped part 13 of the holder l○
The fuel injection valves 8 are spaced apart while forming an air chamber 14.
surrounding. An outflow opening 16 is formed in the bottom 15 of the bowl-shaped portion 13 and extends concentrically with respect to the injection direction of the fuel injection valve 8 . Since the air conduit 18 is connected to the air chamber 14, the fuel to be injected is exposed to air between the end face of the fuel injection valve 8 and the bottom part 15 of the holder 1o.
This allows it to be pre-prepared and injected into the single intake pipe 4. The air line 18 branches off from the intake pipe 1 upstream of the choke knob 2, so that during operation of the internal combustion engine, due to the pressure drop, it flows from the intake pipe 1 upstream of the choke knob 2 towards the outlet opening 16. Automatic pneumatic transport takes place, which further improves the preparation of the injected fuel. The constriction point 19 in the air conduit 18 and (
or) the restriction point 20 serves to define the amount of air flowing through the air conduit 18. According to the invention air conduit 1
At 8, a blower 22 is arranged which is electrically driven and controlled by an electronic control unit 23. Blower 22
In this case, the control takes place taking into account the temperature at the fuel injection valve 8 by sending the measured value of the temperature sensor 24 to the electronic control unit 23 . The control of the blower 22 can also be effected, for example, by a timed element, such as an RC element, provided in the electronic control unit 23. Upstream of the blower 22, the air conduit 18' (see dashed line) may be closed. (2) In the embodiment, the blower 2 is not activated when the internal combustion engine is operating, but only when the internal combustion engine is stopped, that is, when the ignition switch 25 is opened.
初めて温度に関連して又は時間に関連して所定の時間だ
け電子制御装置２３によって制御されて、空気を空気導
管１８ 、１８’を介して空気室１４に搬送する。これ
によって燃料噴射弁８及びその周囲は冷却され、蒸気泡
の発生は回避される。送風機２．？、を駆動するために
必要な、バッテリからの消費電流は僅かである。For the first time, air is conveyed into the air chamber 14 via the air conduits 18 , 18 ′, controlled by the electronic control unit 23 for a predetermined period of time as a function of temperature or as a function of time. As a result, the fuel injection valve 8 and its surroundings are cooled, and generation of steam bubbles is avoided. Blower 2. ? , the current consumption from the battery required to drive is small.
しかしながら、吸気管１と単−吸気管牛との間の圧力差
が僅かな場合には、内燃機関の運転中にも特に内燃機関
の全負荷範囲においては送風機２２が空気導管１８ 、
１８’を介して空気を供給するのに利用されてもよい。However, if the pressure difference between the intake pipe 1 and the single intake pipe is small, even during operation of the internal combustion engine, and especially in the full load range of the internal combustion engine, the blower 22 is forced into the air conduit 18,
It may also be used to supply air via 18'.
この場合内燃機関の停止後に送風機２２は既に上に述べ
たように温度に関連して及び（又は）所定の時間だけ、
燃料噴射弁８の冷却用空気流を生せしめるために、制御
されてもよい。In this case, after the internal combustion engine has stopped, the blower 22 is activated, as already mentioned above, depending on the temperature and/or for a predetermined period of time.
It may also be controlled to produce a cooling air flow for the fuel injection valve 8 .
図面は本発明による冷却ｄ置の１実施例を概略的に示す
図である。The drawing schematically shows an embodiment of a cooling station according to the invention.
Claims (1)
冷却装置であって、冷却される燃料噴射弁が部分的に空
気室によって取囲まれていて、該空気室に空気導管が開
口している形式のものにおいて、空気導管（１８，１８
’）に、内燃機関の停止後に所定の条件に関連して空気
を該空気導管（１８、ｌ ８’）を介して空気室（１４
）に搬送する送風機（２２）が配置されていることを特
徴とする、吸気管を備えた内燃機関に配置された燃料噴
射弁の冷却装置。 ２、空気導管（１８，１８’）に設けられた送風機（２
２）の制御が、内燃機関の停止後に温度に関連して又は
時限素子によって行なわれる特許請求の範囲第１項記載
の冷却装置。 ３、 送風機（２２）上流の空気導管（ｌ望、 １８’
）が吸気管（１）から分岐している特許請求の範囲第１
項記載の冷却装置。[Claims] 1. A cooling device for a fuel injection valve disposed in an internal combustion engine equipped with an intake pipe, wherein the fuel injection valve to be cooled is partially surrounded by an air chamber, and the air In the case where the air conduit opens into the chamber, the air conduit (18, 18
'), after the internal combustion engine has stopped, air is supplied to the air chamber (14
1. A cooling device for a fuel injection valve disposed in an internal combustion engine equipped with an intake pipe, characterized in that a blower (22) is disposed for conveying air to a fuel injector (22). 2. Air blower (2) installed in air conduit (18, 18')
2. Cooling device according to claim 1, wherein the control in step 2) is carried out temperature-related or by means of a timing element after the internal combustion engine has stopped. 3. Air conduit (18') upstream of the blower (22)
) is branched from the intake pipe (1).
Cooling device as described in section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE31358780 | 1981-09-10 | ||
| DE19813135878 DE3135878C2 (en) | 1981-09-10 | 1981-09-10 | Device for cooling a fuel injection valve arranged on an internal combustion engine with an air intake pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5853671A true JPS5853671A (en) | 1983-03-30 |
Family
ID=6141318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15529182A Pending JPS5853671A (en) | 1981-09-10 | 1982-09-08 | Cooling device for fuel injection valve arranged to internal combustion engine with suction pipe |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5853671A (en) |
| DE (1) | DE3135878C2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63150354A (en) * | 1986-12-12 | 1988-06-23 | Osaka Yuki Kagaku Kogyo Kk | Coating composition |
| US6764763B1 (en) | 1998-01-06 | 2004-07-20 | Daikin Industries Ltd. | Water-based vulcanizable fluororubber composition and coated article |
| US20140129069A1 (en) * | 2011-06-23 | 2014-05-08 | Toyota Jidosha Kabushiki Kaisha | Vehicle |
| CN111852706A (en) * | 2019-04-25 | 2020-10-30 | 罗伯特·博世有限公司 | Cooling channel for fuel injector |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2635827B1 (en) * | 1988-08-30 | 1993-11-26 | Solex | FUEL INJECTION DEVICE WITH AERATION CHAMBER |
| DE19809175A1 (en) * | 1998-03-04 | 1999-09-09 | Schaeffler Waelzlager Ohg | IC engine with solenoid valve unit |
| US7395790B2 (en) | 2004-11-18 | 2008-07-08 | S&S Cycle, Inc. | Reed valve breather for evolution engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE845878C (en) * | 1950-07-11 | 1952-08-07 | Kloeckner Humboldt Deutz Ag | Fuel injection device, especially for diesel engines |
| FR2033449A5 (en) * | 1969-02-25 | 1970-12-04 | Brev Etudes Sibe | |
| DE2748407A1 (en) * | 1977-10-28 | 1979-05-03 | Daimler Benz Ag | IC engine fuel injector - has spring loaded air flow control valve inside pointed tip of injection needle |
-
1981
- 1981-09-10 DE DE19813135878 patent/DE3135878C2/en not_active Expired - Fee Related
-
1982
- 1982-09-08 JP JP15529182A patent/JPS5853671A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63150354A (en) * | 1986-12-12 | 1988-06-23 | Osaka Yuki Kagaku Kogyo Kk | Coating composition |
| US6764763B1 (en) | 1998-01-06 | 2004-07-20 | Daikin Industries Ltd. | Water-based vulcanizable fluororubber composition and coated article |
| US20140129069A1 (en) * | 2011-06-23 | 2014-05-08 | Toyota Jidosha Kabushiki Kaisha | Vehicle |
| US9242635B2 (en) * | 2011-06-23 | 2016-01-26 | Toyota Jidosha Kabushiki Kaisha | Vehicle having a ventilation device for an intake passage of an internal combustion engine |
| CN111852706A (en) * | 2019-04-25 | 2020-10-30 | 罗伯特·博世有限公司 | Cooling channel for fuel injector |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3135878A1 (en) | 1983-03-24 |
| DE3135878C2 (en) | 1993-10-28 |
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