JPH0375748B2 - - Google Patents
Info
- Publication number
- JPH0375748B2 JPH0375748B2 JP57202097A JP20209782A JPH0375748B2 JP H0375748 B2 JPH0375748 B2 JP H0375748B2 JP 57202097 A JP57202097 A JP 57202097A JP 20209782 A JP20209782 A JP 20209782A JP H0375748 B2 JPH0375748 B2 JP H0375748B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- chamber
- fuel
- passage
- bench
- 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 - Lifetime
Links
- 239000000446 fuel Substances 0.000 claims description 70
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 241000234435 Lilium Species 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization 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
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/043—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit upstream of an air throttle valve
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)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は自動車用燃料供給装置に係り、特に、
絞り弁の上流に単点燃料噴射弁を設置した燃料供
給装置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 fuel supply device for an automobile, and in particular,
This invention relates to a fuel supply system in which a single point fuel injection valve is installed upstream of a throttle valve.
従来の絞り弁上流側に燃料噴射弁を設置する場
合は、燃料噴射弁をどのように固定するかで多大
の苦労を重ねていた。例えばベンチユリ部から突
出された支持腕に取り付けるときは燃料噴射弁へ
の燃料通路と配線が問題となり、吸気通路に取り
付けたときはベンチユリ部からエアクリーナ迄が
長くなつて燃料噴射弁の設置空間が大きくなると
いう欠点を生じていた。更に、熱線式空気流量計
を設置したベンチユリチヤンバのバイパス空気路
のバイパス空気の入口および出口をエンジンより
の吸入圧変動やバツクフアイヤ時の影響を最小に
するように設けるについても多くの問題点をもつ
ていた。これらの欠点や問題点は、特開昭57−
16259号公報に見られる如く個別的には改善され
ることはあつたが、全般的に解決して高性能な燃
料噴射装置を得るには綜合的な見直しが必要であ
るとの結論に達した。
When installing a fuel injection valve on the upstream side of a conventional throttle valve, a great deal of trouble was encountered in determining how to fix the fuel injection valve. For example, when installing the fuel injector on a support arm protruding from the bench lily, the fuel passage and wiring to the fuel injector become a problem, and when installing it in the intake passage, the distance from the bench lily to the air cleaner becomes long, requiring a large installation space for the fuel injector. It had the disadvantage of becoming. Furthermore, there are many problems in arranging the bypass air inlet and outlet of the bypass air passage of the bench chamber equipped with the hot-wire air flow meter so as to minimize the influence of intake pressure fluctuations from the engine and the effects of backfire. It had a These shortcomings and problems are discussed in Japanese Patent Application Laid-open No.
Although there were some individual improvements as seen in Publication No. 16259, it was concluded that a comprehensive review was necessary in order to solve the problem overall and obtain a high-performance fuel injection device. .
本発明は従来技術の問題点を解消し、小形・高
性能な燃料供給装置を提供することを目的とす
る。
SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art and provide a compact, high-performance fuel supply device.
本発明の特徴とするところは、燃料噴射弁の配
線路を設けたキヤツプと、燃料噴射弁用の燃料通
路を設けた受け金部とで燃料噴射弁を同軸上に密
閉支持し、エアチヤンバは、キヤツプをエアチヤ
ンバ内に支持するための腕と、キヤツプの両側の
側面に設けられた空気入口と、腕の内に設けられ
空気入口からベンチユリチヤンバ側に空気を導く
第１のバイパス空気路とを有し、また、ベンチユ
リチヤンバは、その壁内に、熱式空気流量計の検
出部が設けられ燃料通路を挾んでベンチユリ部を
囲むように延長された環状空気路と、環状空気路
と第１のバイパス空気路を結ぶ第２のバイパス空
気路とを有すると共に、環状空気路からベンチユ
リ部の内面に開口する複数の空気出口とを有し、
さらに、スロツトルチヤンバは絞り弁付近の壁内
に温水通路を有するように構成したことにある。
The present invention is characterized in that the fuel injector is coaxially and hermetically supported by a cap provided with a wiring path for the fuel injector and a receiving part provided with a fuel passage for the fuel injector, and the air chamber is an arm for supporting the cap in the air chamber; an air inlet provided on both sides of the cap; and a first bypass air path provided in the arm for guiding air from the air inlet to the bench chamber side. The bench lily chamber also has an annular air passage provided in its wall with a detection part of a thermal air flow meter and extended to sandwich the fuel passage and surround the bench lily part, and an annular air passage. and a second bypass air path connecting the first bypass air path, and a plurality of air outlets opening from the annular air path to the inner surface of the bench lily portion,
Furthermore, the throttle chamber is configured to have a hot water passage within the wall near the throttle valve.
このように構成することにより、エアチヤンバ
の中心部に形成したキヤツプとベンチユリチヤン
バの中心部の受け金部とで気密に構成した容器中
に燃料噴射弁が収納される。また、キヤツプ側面
に設けられたバイパス空気路の入口は吸気逆流時
の影響を減少させるように作用する。さらに、キ
ヤツプを与える腕部の一方にはバイパス空気路が
形成され、他の腕部の中には燃料噴射弁の配線路
が形成される。 With this configuration, the fuel injection valve is housed in a container that is airtightly constructed by the cap formed at the center of the air chamber and the receiving part at the center of the bench chamber. Furthermore, the inlet of the bypass air passage provided on the side of the cap acts to reduce the influence of intake air backflow. Additionally, a bypass air passage is formed in one of the arms providing the cap, and a wiring path for the fuel injector is formed in the other arm.
また、キヤツプに設けられたバイパス空気路の
入り口は、その腕部内を通り、ベンチユリチヤン
バのバイパス空気路に連通され、さらに、バイパ
ス空気路はベンチユリ部に設けられた複数の出口
に連通される、そのために、吸気圧力の影響は平
均化され、腕配置による干渉が無くなるように作
用する。 Further, the entrance of the bypass air passage provided in the cap passes through the arm portion thereof and is communicated with the bypass air passage of the bench lily chamber, and the bypass air passage is further communicated with a plurality of outlets provided in the bench lily portion. Therefore, the influence of inhalation pressure is averaged out, and interference due to arm placement is eliminated.
さらに、また、絞り弁の周囲の壁内に流通され
る温水通路内のエンジン冷却水は壁面に付着した
噴射材料を迅速に気化させる。 Furthermore, the engine cooling water in the hot water passage that flows into the wall surrounding the throttle valve quickly vaporizes the injection material adhering to the wall surface.
〔発明の実施例〕
第１図は本発明の一実施例である燃料供給装置
の垂直断面図である。この燃料供給装置は上部は
エアチヤンバ１、中間はベンチユリチヤンバ６、
断熱板１６を介して下部はスロツトルチヤンバ１
７の３部分をねじ等で結合した構造となつてお
り、エアチヤンバ１は第２図〜第４図に示すごと
く中心部にキヤツプ２を形成している。このキヤ
ツプ２は側面にスリツト状のバイパス空気入口３
を複数個形成し、上面にはエアクリーナの中心を
規制するねじ孔４を設けてある。[Embodiment of the Invention] FIG. 1 is a vertical cross-sectional view of a fuel supply device that is an embodiment of the present invention. This fuel supply system includes an air chamber 1 at the top, a bench chamber 6 at the middle,
The lower part is connected to the throttle chamber 1 through the heat insulating plate 16.
The air chamber 1 has a structure in which three parts of the air chamber 7 are connected by screws or the like, and a cap 2 is formed in the center of the air chamber 1 as shown in FIGS. 2 to 4. This cap 2 has a slit-shaped bypass air inlet 3 on the side.
A plurality of air cleaners are formed, and a screw hole 4 for regulating the center of the air cleaner is provided on the upper surface.
第２図は第１図のエアチヤンバの平面図で、第
３図は第２図のＢ−Ｂ断面図で、第４図は第３図
のＣ−Ｃ断面図である。キヤツプ２は第１のバイ
パス空気路５を形成した腕と燃料噴射弁１０への
配線路２７を形成した腕とで支持されており、側
面には一対のスリツト状のバイパス空気路入口３
ａ，３ｂを形成している。また、配線のグロメツ
トはピツト２８に取り付け、第２図の４隅の孔は
ボルト孔３０である。なお、このエアチヤンバ１
はダイカスト可能に形成されている。 2 is a plan view of the air chamber shown in FIG. 1, FIG. 3 is a sectional view taken along line BB in FIG. 2, and FIG. 4 is a sectional view taken along line CC in FIG. 3. The cap 2 is supported by an arm forming a first bypass air path 5 and an arm forming a wiring path 27 to the fuel injection valve 10, and has a pair of slit-shaped bypass air path inlets 3 on the side.
a and 3b are formed. Further, the wiring grommets are attached to the pits 28, and the holes at the four corners in FIG. 2 are bolt holes 30. In addition, this air chamber 1
is formed to be die-castable.
第５図は第１図のＡ−Ａ断面図で、ベンチユリ
チヤンバの横断面図である。第４図のキヤツプ２
に形成した第１のバイパス空気路５は第５図の右
下部の第２のバイパス空気路５′に連通し、ホツ
トワイヤセンサ７を設置した通路を経て環状空気
路１４に入る。この空気はベンチユリ部１５に開
口した複数個のバイパス空気出口８より吸気路内
に流出する。ベンチユリ部１５の中心は第１図の
受け金部１２となつており、燃料通路１３を貫通
させた腕に支持されてその中に燃料噴射弁１０を
収容している。 FIG. 5 is a cross-sectional view taken along the line AA in FIG. 1, and is a cross-sectional view of the bench chamber. Cap 2 in Figure 4
The first bypass air passage 5 formed in FIG. 5 communicates with a second bypass air passage 5' on the lower right side of FIG. This air flows out into the intake passage through a plurality of bypass air outlets 8 opened in the bench lily portion 15. The center of the bench lily part 15 is the receiving part 12 shown in FIG. 1, which is supported by an arm passing through the fuel passage 13 and houses the fuel injection valve 10 therein.
第１図に示すごとく第５図は燃料噴射弁１０の
下部断面を示しているが、その周囲は燃料通路１
３となつている。即ち、この燃料噴射弁１０は下
部に加圧燃料を導入し、ボール弁の上下動によつ
て開閉するタイプである。この種の燃料噴射弁１
０は第１２図に詳細に示してあり、後程説明す
る。 As shown in FIG. 1, FIG. 5 shows a cross section of the lower part of the fuel injection valve 10, and the surrounding area is the fuel passage 1.
It has become 3. That is, this fuel injection valve 10 is of a type that introduces pressurized fuel into the lower part and opens and closes by moving the ball valve up and down. This kind of fuel injection valve 1
0 is shown in detail in FIG. 12 and will be explained later.
燃料通路１３は燃圧調整弁２１によつて一定圧
に調節されて常時流通し燃料タンクへ戻るが、こ
の燃料調節弁２１はダイヤフラム２３によつて大
気圧室２６と燃料流通室とに仕切られ、ダイヤフ
ラム２３の中央部に取り付けた突起物の先端には
弁２５が係止されてシート部に対向させてある。
また、弁２５とシート部との間には小ばね２４が
設置されて常に弁２５を上げてシート部を開こう
としている。一方大気圧室２６には大ばね２２が
あつてダイヤフラムを押しているので、燃圧が設
定値よりも上昇した時は大ばね２２を圧縮し小ば
ね２４は伸びて開弁する。また、燃圧が設定値よ
りも低下した時は大ばね２２が伸びて小ばね２４
を縮少し、閉弁することにより燃料圧を上昇させ
る。 The fuel passage 13 is regulated to a constant pressure by a fuel pressure regulating valve 21 and constantly flows back to the fuel tank, but the fuel regulating valve 21 is partitioned by a diaphragm 23 into an atmospheric pressure chamber 26 and a fuel distribution chamber. A valve 25 is locked at the tip of a protrusion attached to the center of the diaphragm 23 and is opposed to the seat portion.
Further, a small spring 24 is installed between the valve 25 and the seat portion to constantly raise the valve 25 to open the seat portion. On the other hand, a large spring 22 is placed in the atmospheric pressure chamber 26 and presses the diaphragm, so when the fuel pressure rises above a set value, the large spring 22 is compressed and the small spring 24 is extended to open the valve. Also, when the fuel pressure drops below the set value, the large spring 22 expands and the small spring 24
The fuel pressure is increased by reducing the fuel pressure and closing the valve.
ベンチユリチヤンバ６の右側面にはホツトワイ
ヤセンサ７の検知信号の処理部が設けられ、熱線
式空気流量計９を構成している。また、ベンチユ
リチヤンバ６の外周に近い４個所に形成した孔３
０はボルト孔である。 A processing section for the detection signal of the hot wire sensor 7 is provided on the right side of the bench chamber 6, and constitutes a hot wire air flow meter 9. In addition, holes 3 formed at four locations near the outer periphery of the bench lily chamber 6
0 is a bolt hole.
第６図はベンチユリチヤンバ６平面図で、第７
図は第６図のＤ−Ｄ断面図、第８図は第６図のＥ
−Ｅ断面図である。第６図の４隅にはボルト孔３
０があつてベンチユリチヤンバ６を断熱板１６を
介してスロツトルチヤンバ１７に締結している。
また、４隅にあるねじ孔２９はエアチヤンバ１を
ねじ止めするために設けられている。第７図の第
２のバイパス空気路５′はホツトワイヤセンサ７
を設置した場所を経て環状空気路１４に連通し、
ベンチユリチヤンバ６の右側面は熱線式空気流量
計９を取り付けるために一つの平坦面としてあ
る。 Figure 6 is a plan view of the bench lily chamber 6, and the 7th
The figure is a sectional view taken along line D-D in Figure 6, and Figure 8 is a cross-sectional view taken along line E in Figure 6.
-E sectional view. There are three bolt holes in the four corners of Figure 6.
0, and the bench lever chamber 6 is fastened to the throttle chamber 17 via the heat insulating plate 16.
Further, screw holes 29 at the four corners are provided for screwing the air chamber 1. The second bypass air passage 5' in FIG.
It communicates with the annular air passage 14 through the place where it is installed,
The right side of the bench chamber 6 is a flat surface for mounting a hot wire air flow meter 9.
第８図は燃料通路１３に沿つた断面図で、その
上部には燃料蒸気抜き路３１を設け、共に燃圧調
整部に連通している。なお、中央の空所には燃料
噴射弁１０が収容されるので、その下部は燃料通
路１３に露出している。このベンチユリチヤンバ
６はダイカスト成形を可能にする形状となつてい
る。 FIG. 8 is a sectional view taken along the fuel passage 13, in which a fuel vapor vent passage 31 is provided at the upper part thereof, and both communicate with the fuel pressure adjustment section. Note that since the fuel injection valve 10 is accommodated in the central cavity, its lower part is exposed to the fuel passage 13. This bench turret chamber 6 has a shape that allows die-casting.
第６図は第１図のスロツトルチヤンバの側面図
で、３２は絞り弁軸孔である。第１０図は第９図
のＦ−Ｆ断面図である。吸気路３３は絞り弁軸に
取り付けた絞り弁１８が設置される所であるが、
その周囲の吸気路壁内にはエンジン冷却水を循環
させている温水通路１９としている。なお、絞り
弁軸孔３２の上部には負圧取出路２０が設けられ
ており、これもダイカスト成型可能に形成されて
いる。 FIG. 6 is a side view of the throttle chamber shown in FIG. 1, and 32 is a throttle valve shaft hole. FIG. 10 is a sectional view taken along line FF in FIG. 9. The intake passage 33 is where the throttle valve 18 attached to the throttle valve shaft is installed.
A hot water passage 19 in which engine cooling water is circulated is formed in the wall of the intake passage around the intake passage. Note that a negative pressure outlet passage 20 is provided in the upper part of the throttle valve shaft hole 32, and this is also formed to be die-castable.
第１２図は第１図の燃料噴射弁の拡大断面図で
ある。その構造の概略を説明すると、ボール弁３
５を下端に取り付けたプランジヤ４０は筒状の噴
口部３９内を上下し、ボール弁３５が上昇した時
は燃料通路１３を介して加圧されている燃料を噴
出する。この時スワラー３６の複数条の斜め溝に
よつて燃料は旋回させられて拡散状態で噴出す
る。なお、リング３８は噴口部３９の凹部に設置
したフイルタを固定している。 FIG. 12 is an enlarged sectional view of the fuel injection valve of FIG. 1. To explain the outline of its structure, ball valve 3
5 attached to the lower end moves up and down inside the cylindrical nozzle 39, and when the ball valve 35 rises, it jets out pressurized fuel through the fuel passage 13. At this time, the fuel is swirled by the plurality of diagonal grooves of the swirler 36 and is ejected in a diffused state. Note that the ring 38 fixes a filter installed in the recess of the spout 39.
プランジヤ４０の上端は仕切板４３を介して筒
５１の下端に対向し、上部に形成した凹所内に設
置したばね４１を介して調整ねじ５０で押えら
れ、これによつてばね力が調節される。この筒５
１には横孔４４があり、プランジヤ４０の上下動
によつて運ばれた燃料の一部はこの横孔４４を出
入すると共に、更にボビン４９と筒５１の間を上
昇した燃料は隙間４５を等つてフイルタ４６を設
置した小孔４８から流出する。しかしこの燃料は
受け金部２１の内面を流下して燃料通路３１に戻
る。即ち、燃料の一部は燃料噴射弁１０内を流通
してコイル４３の発熱を取り去り温度上昇を抑制
している。なお、５２は磁路の一部をなす端板で
ある。 The upper end of the plunger 40 faces the lower end of the cylinder 51 via a partition plate 43, and is pressed by an adjustment screw 50 via a spring 41 installed in a recess formed in the upper part, thereby adjusting the spring force. . This cylinder 5
1 has a horizontal hole 44, and part of the fuel carried by the vertical movement of the plunger 40 enters and leaves this horizontal hole 44, and the fuel that has further risen between the bobbin 49 and the cylinder 51 passes through the gap 45. The liquid then flows out from a small hole 48 in which a filter 46 is installed. However, this fuel flows down the inner surface of the receiving part 21 and returns to the fuel passage 31. That is, a portion of the fuel flows through the fuel injection valve 10 to remove heat generated from the coil 43 and suppress a rise in temperature. Note that 52 is an end plate forming a part of the magnetic path.
以上説明したように、本発明の構成によれば、
以下に示す(1)、(2)及び(3)に示される効果を具えた
燃料供給装置を得ることが可能となる。
As explained above, according to the configuration of the present invention,
It is possible to obtain a fuel supply device having the effects shown in (1), (2), and (3) below.
(1) 燃料噴射弁の取付法が優れている。(1) The fuel injection valve installation method is excellent.
エアチヤンバの中部に形成したキヤツプとベ
ンチユリチヤンバの中心部の受け金部とで構成
した容器中に気密に燃料噴射弁を確実に、か
つ、容易に収納できる。また、キヤツプの側面
にバイパス空気路の入口を設けて吸気逆流時の
影響を減少させると共に、キヤツプを与える腕
部の一方にはバイパス空気路を設け、他の腕部
の中には燃料噴射弁への配線路を形成させるこ
とができる。 A fuel injection valve can be reliably and easily housed airtight in a container constituted by a cap formed in the middle of an air chamber and a receiving part in the center of a bench chamber. In addition, a bypass air passage entrance is provided on the side of the cap to reduce the effect of intake backflow, and one arm that provides the cap is provided with a bypass air passage, and the other arm is provided with a fuel injection valve. It is possible to form a wiring path to.
(2) バイパス空気路の構成が優れている。(2) Excellent bypass air passage configuration.
バイパス空気路入口は従来は、ベンチユチ上
部の吸気路壁に設けるのが普通であつたが、キ
ヤツプに設けて、その腕部内を通り、ベンチユ
リチヤンバのバイパス空気路に連通させてい
る。これによつて吸気中の塵埃等を遮断すると
共に逆流空気の影響を抑制できる。また、バイ
パス空気路の出口はベンチユリチヤンバの受け
金部を支持する腕配置による吸気圧力の干渉の
影響をなくして平均化される。 Conventionally, the bypass air passage inlet was normally provided on the intake passage wall at the upper part of the bench, but it is provided in the cap, passes through the arm of the cap, and communicates with the bypass air passage of the bench chamber. Thereby, it is possible to block out dust and the like in the intake air and to suppress the influence of backflow air. Further, the outlet of the bypass air passage is averaged by eliminating the influence of interference of the intake pressure due to the arrangement of the arm supporting the receiving part of the bench chamber.
(3) スロツトルチヤンバにおける燃料気化促進に
優れている。(3) Excellent in promoting fuel vaporization in the throttle chamber.
絞り弁の周囲の壁内にはエンジン冷却水を流
通させる温水通路を設けてあるので、噴射材料
が壁面に付着しても迅速に気化される。このこ
とは燃料供給の応答性を向上させるのに役立つ
ている。 Since a hot water passage through which engine cooling water flows is provided in the wall surrounding the throttle valve, even if the injection material adheres to the wall surface, it is quickly vaporized. This helps improve the responsiveness of the fuel supply.
このように、本発明の構成によれば、以上に示
した(1)、(2)及び(3)に示される効果を得ることがで
き、そのために、すべての点で合理的に設計され
小型、高性能である燃料供給装置を提供すること
が可能となる。 As described above, according to the configuration of the present invention, it is possible to obtain the effects shown in (1), (2), and (3) shown above, and for that purpose, it is possible to obtain a compact and compact design that is rationally designed in all respects. , it becomes possible to provide a high-performance fuel supply device.
第１図は本発明の一実施例である燃料供給装置
の垂直断面図、第２図は第１図のエアチヤンバの
平面図、第３図は第２図のＢ−Ｂ断面図、第４図
は第３図のＣ−Ｃ断面図、第５図は第１図のＡ−
Ａ断面図、第６図はベンチユリチヤンバの平面
図、第７図は第６図のＤ−Ｄ断面図、第８図は第
６図のＥ−Ｅ断面図、第９図は第１図のスロツト
ルチヤンバの正面図、第１０図は第９図のＦ−Ｆ
断面図、第１１図は第１０図のＧ−Ｇ断面図、第
１２図は第１図の燃料噴射弁の垂直断面図であ
る。
１……エアチヤンバ、２……キヤツプ、３……
バイパス空気入口、４，２９……ねじ孔、５……
バイパス空気路、６……ベンチユリチヤンバ、７
……ホツトワイヤセンサ、８……バイパス空気出
口、９……熱線式空気流量計、１０……燃料噴射
弁、１１……噴口、１２……受け金部、１３……
燃料通路、１４……環状空気路、１５……ベンチ
ユリ部、１６……断熱板、１７……スロツトルチ
ヤンバ、１８……絞り弁、１９……温水通路、２
０……負圧取出路、２１……燃圧調整弁、２２…
…大ばね、２３……ダイヤフラム、２４……小ば
ね、２５……弁、２６……大気圧室、２７……配
線路、２８……ピツト、３０……ボルト孔、３１
……蒸気抜き路、３２……絞り弁軸孔、３３……
吸気路、３５……ボール弁、３６……スワラー、
３８……リング、３９……噴口部、４０……プラ
ンジヤ、４１……ばね、４２……仕切板、４３…
…コイル、４４……横孔、４５……隙間、４６…
…フイルタ、４７……ヨーク、４８……小孔、４
９……ボビン、５０……調整ねじ、５１……筒、
５２……端板。
FIG. 1 is a vertical sectional view of a fuel supply device that is an embodiment of the present invention, FIG. 2 is a plan view of the air chamber in FIG. 1, FIG. 3 is a sectional view taken along line B-B in FIG. 2, and FIG. is a sectional view taken along line C-C in Figure 3, and Figure 5 is taken along line A-- in Figure 1.
A sectional view, FIG. 6 is a plan view of the bench turret chamber, FIG. 7 is a sectional view taken along line D-D in FIG. 6, FIG. The front view of the throttle chamber shown in the figure, Figure 10 is F-F in Figure 9.
11 is a sectional view taken along line GG in FIG. 10, and FIG. 12 is a vertical sectional view of the fuel injection valve shown in FIG. 1. 1...Air chamber, 2...Cap, 3...
Bypass air inlet, 4, 29...screw hole, 5...
Bypass air passage, 6... Bench lily chamber, 7
... Hot wire sensor, 8 ... Bypass air outlet, 9 ... Hot wire air flow meter, 10 ... Fuel injection valve, 11 ... Nozzle, 12 ... Receiver, 13 ...
Fuel passage, 14... Annular air passage, 15... Bench lily portion, 16... Heat insulating plate, 17... Throttle chamber, 18... Throttle valve, 19... Hot water passage, 2
0... Negative pressure outlet path, 21... Fuel pressure adjustment valve, 22...
... Large spring, 23 ... Diaphragm, 24 ... Small spring, 25 ... Valve, 26 ... Atmospheric pressure chamber, 27 ... Wiring path, 28 ... Pit, 30 ... Bolt hole, 31
... Steam vent passage, 32 ... Throttle valve shaft hole, 33 ...
Intake path, 35... Ball valve, 36... Swirler,
38...Ring, 39...Nozzle part, 40...Plunger, 41...Spring, 42...Partition plate, 43...
...Coil, 44...Horizontal hole, 45...Gap, 46...
...Filter, 47...Yoke, 48...Small hole, 4
9...Bobbin, 50...Adjustment screw, 51...Cylinder,
52...End plate.
Claims (1)
のエアチヤンバに接続してベンチユリ部を内面に
形成したベンチユリチヤンバと、このベンチユリ
チヤンバに断熱板を介して接続され通路に絞り弁
を取付けたスロツトルチヤンバと、前記ベンチユ
リ部の中心に前記絞り弁に対向するように配置さ
れた燃料噴射弁を有した燃料供給装置において、
前記燃料噴射弁の配線路を設けたキヤツプと、前
記燃料噴射弁用の燃料通路を設けた受け金部とで
前記燃料噴射弁を同軸上に密閉支持し、前記エア
チヤンバは、前記キヤツプを前記エアチヤンバ内
に支持するための腕と、前記キヤツプの両側の側
面に設けられた空気入口と、前記腕の内に設けら
れ前記空気入口から前記ベンチユリチヤンバ側に
空気を導く第１のバイパス空気路とを有し、ま
た、前記ベンチユリチヤンバは、その壁内に、熱
式空気流量計の検出部が設けられ前記燃料通路を
挾んで前記ベンチユリ部を囲むように延長された
環状空気路と、前記環状空気路と前記第１のバイ
パス空気路を結ぶ第２のバイパス空気路とを有す
ると共に、前記環状空気路からベンチユリ部の内
面に開口する複数の空気出口とを有し、さらに、
前記スロツトルチヤンバは前記絞り弁付近の壁内
に温水通路を有することを特徴とした燃料供給装
置。1 An air chamber connected to the air cleaner, a bench lily chamber connected to this air chamber and having a bench lily portion formed on its inner surface, and a slotted chamber connected to this bench lily chamber via a heat insulating plate and having a throttle valve installed in the passage. and a fuel injection valve disposed at the center of the bench lily portion so as to face the throttle valve,
The fuel injector is coaxially and hermetically supported by a cap provided with a wiring path for the fuel injector and a receiving part provided with a fuel passage for the fuel injector, and the air chamber connects the cap to the air chamber. an arm for supporting the cap, an air inlet provided on both sides of the cap, and a first bypass air path provided in the arm for guiding air from the air inlet to the bench turret chamber side. The bench lily chamber also has an annular air passage provided in its wall with a detection part of a thermal air flow meter and extending so as to sandwich the fuel passage and surround the bench lily part. , a second bypass air path connecting the annular air path and the first bypass air path, and a plurality of air outlets opening from the annular air path to the inner surface of the bench lily portion;
A fuel supply device characterized in that the throttle chamber has a hot water passage within a wall near the throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20209782A JPS5993961A (en) | 1982-11-19 | 1982-11-19 | Fuel feed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20209782A JPS5993961A (en) | 1982-11-19 | 1982-11-19 | Fuel feed device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5993961A JPS5993961A (en) | 1984-05-30 |
| JPH0375748B2 true JPH0375748B2 (en) | 1991-12-03 |
Family
ID=16451911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20209782A Granted JPS5993961A (en) | 1982-11-19 | 1982-11-19 | Fuel feed device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5993961A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562462A (en) * | 1979-06-22 | 1981-01-12 | Nippon Denso Co Ltd | Fuel supply device for engine |
| JPS5773859A (en) * | 1980-08-26 | 1982-05-08 | Bosch Gmbh Robert | Mixture gas forming apparatus for internal combustion engine |
-
1982
- 1982-11-19 JP JP20209782A patent/JPS5993961A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562462A (en) * | 1979-06-22 | 1981-01-12 | Nippon Denso Co Ltd | Fuel supply device for engine |
| JPS5773859A (en) * | 1980-08-26 | 1982-05-08 | Bosch Gmbh Robert | Mixture gas forming apparatus for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5993961A (en) | 1984-05-30 |
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