JPS6241967A - Fuel feeding device for internal combustion engine - Google Patents

Fuel feeding device for internal combustion engine

Info

Publication number
JPS6241967A
JPS6241967A JP18262285A JP18262285A JPS6241967A JP S6241967 A JPS6241967 A JP S6241967A JP 18262285 A JP18262285 A JP 18262285A JP 18262285 A JP18262285 A JP 18262285A JP S6241967 A JPS6241967 A JP S6241967A
Authority
JP
Japan
Prior art keywords
nozzle
valve
throttle valve
low
internal combustion
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
Application number
JP18262285A
Other languages
Japanese (ja)
Inventor
Takeshi Okada
毅 岡田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP18262285A priority Critical patent/JPS6241967A/en
Publication of JPS6241967A publication Critical patent/JPS6241967A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To simplify a control device and reduce its cost by providing a throttle valve, a slide valve, and a needle valve on a variable Venturi while forming a main nozzle and a low-speed nozzle on a body. CONSTITUTION:The body 4 of a variable Venturi 3 is installed in intake manifolds 1, and a throttle valve 5, a slide valve 8, and a needle valve 15 are provided on the variable Venturi 3. A main nozzle 16 into which the needle valve 15 is inserted, and a low-speed nozzle 19 which opens in the vicinity of the throttle valve 5, are formed on the body 4. Pressure sensors 18, 22 for detecting negative pressures on the base end sides of the main nozzle 19 and the low-speed nozzle 19 respectively, are provided on the body 4. Further, a control device 25 makes electrifying control of an injection nozzle 2 based on the detected signals from the pressure sensors 18, 22. Thus, the control device 25 can be constructed in a simple form and at a low cost.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は噴射ノズルにより燃ネ1を内燃機関の吸入ポー
トに供給する′内燃機関の燃料供給装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fuel supply system for an internal combustion engine which supplies fuel 1 to an intake port of the internal combustion engine through an injection nozzle.

(従来の技術) 従来、噴射ノズルにより燃才1を供給曽−る燃料供給装
置としては、マイクロコンピュータを笛1えた制御装置
により噴射ノズルへの通電時間を制御するものが一般的
に知られている。このタイプの燃料供給装置は、例えば
吸入空気V、エンジン回転数、スロットル開度等を検出
する各センサや、fめ噴射ノズルの燃料噴射Vを設定し
たメモリマツプを備え、各センサからの検出信号に基づ
いてスロットル開度に応じた制御信号をメモリマツプか
ら読出し、この制御信号に基づき噴射ノズルのソレノイ
ドコイルを通電制御することにより、適切な燃料を吸入
ポートに供給する構成である。
(Prior Art) Conventionally, as a fuel supply device that supplies fuel 1 through an injection nozzle, one that controls the energization time to the injection nozzle by a control device equipped with a microcomputer is generally known. There is. This type of fuel supply device is equipped with various sensors that detect, for example, intake air V, engine speed, throttle opening, etc., and a memory map that sets the fuel injection V of the fth injection nozzle. Based on the control signal, a control signal corresponding to the throttle opening degree is read from the memory map, and the solenoid coil of the injection nozzle is energized based on this control signal, thereby supplying appropriate fuel to the intake port.

(発明が解決しようとする問題点) ところが、1−記従来の燃料供給装置においては、メモ
リマツプの内容が各種内燃機関のq換性がないため、機
種ごとにメモリマツプの内容を作成しなければならず、
メモリマツプの内容の作成に作業[数を要するとともに
装置構成が複雑となり、高価となる不几合があった。
(Problems to be Solved by the Invention) However, in the conventional fuel supply system described in 1-1, the contents of the memory map are not compatible with each type of internal combustion engine, so the contents of the memory map must be created for each model. figure,
Creating the contents of the memory map required a lot of work, complicated the device configuration, and was expensive.

そこで、未発1■はメモリマツプを不要とし装置構成が
簡素11一つ安価で−q換性を有する内燃機関の燃′J
4供給装置を提供することを[1的とするものである。
Therefore, the unreleased 1) does not require a memory map, has a simple device configuration, is inexpensive, and has -q conversion capability.
[1] To provide a four-feeding device.

(問題点の解決手段) 本発明の燃ネ1供給装置は、可変ベンチュリのボディが
吸気マニホルドに介装されており、この可変ベンチュリ
にはスロットル弁、この−fl側に配設された摺動弁、
この摺動弁の先端に突設されたニードルj「とを備えて
いる。また、ボディには、ニードル4Fが挿入される主
ノズルとスロットル弁近傍で開[1する低速ノズルとが
形成されており、これらの主ノズルおよび低速ノズルの
基端側の負圧を検出する圧力センサがボディに設けられ
ている。さらに、圧力センサからの検出信号に基づき噴
射ノズルを通電制御する制御装置とを備えている。
(Means for Solving Problems) In the fuel supply device of the present invention, the body of the variable venturi is interposed in the intake manifold, and the variable venturi includes a throttle valve and a sliding valve disposed on the -fl side. valve,
The sliding valve is provided with a needle "J" protruding from the tip thereof.The body is also formed with a main nozzle into which the needle 4F is inserted and a low-speed nozzle that opens near the throttle valve. The main nozzle and the low-speed nozzle are provided with a pressure sensor on the body that detects the negative pressure at the proximal end thereof.The body also includes a control device that controls the energization of the injection nozzle based on the detection signal from the pressure sensor. ing.

(実施例) 以ドに本発明の一実施例を添付図面に基づいて説明する
(Embodiment) An embodiment of the present invention will be described below based on the accompanying drawings.

本実施例では第1図に示すように、吸気マニホルド(1
)には内燃機関の吸入ポート(図示省略)に臨むよう噴
射ノズル(2)が取付けられており、吸気マニホルド(
1)には可変ベンチュリ(3)の筒状をなすボディ(4
)が介装されている。
In this embodiment, as shown in FIG.
) is equipped with an injection nozzle (2) facing the intake port (not shown) of the internal combustion engine, and the intake manifold (
1) has a cylindrical body (4) of a variable venturi (3).
) is interposed.

この可変ベンチュリ(3)は、ボディ(4)内にスロッ
トル4F(5)を備え、スロットル弁(5) −1−流
側には外方に突設された+r筒(6)を備えている。こ
の弁m(6)はその間11がカバー(7)により密閉さ
れ、その内部には空気流速調整用の摺動弁(8)が挿入
されている。この摺動弁(8)は、その先端側がボディ
(4)内の吸気通路(4a)に突出するよう配設され、
その基端側がダイヤフラム(9)に連結され、ダイヤフ
ラム(9)とともに、弁! (B)内を王室(IOA)
と(108)にメ]画している。一方の室     1
(IOA)はブースト圧を取入れる通気孔(11)を通
じて吸気通路(4a)に連通し、他方の室(IOB)は
通気孔(12)を通じて大気に連通1.ており、ベンチ
ュリ部の負圧に応じて摺動弁(8)の突H+1−mが変
化し、ベンチュリ部の吸気の流速が略一定に保持きれる
。尚、(13)および(14)は任意の付勢力に設定さ
れたバネである。
This variable venturi (3) is equipped with a throttle 4F (5) in the body (4), and a +r cylinder (6) protruding outward on the flow side of the throttle valve (5). . This valve m(6) is sealed at a portion 11 thereof by a cover (7), and a sliding valve (8) for adjusting the air flow rate is inserted inside the valve m(6). This slide valve (8) is arranged so that its tip side protrudes into the intake passage (4a) in the body (4),
Its base end side is connected to the diaphragm (9), and together with the diaphragm (9), the valve! (B) Inside the royal family (IOA)
and (108). One room 1
(IOA) communicates with the intake passage (4a) through a vent (11) that takes in boost pressure, and the other chamber (IOB) communicates with the atmosphere through a vent (12). Therefore, the protrusion H+1-m of the sliding valve (8) changes according to the negative pressure in the venturi part, and the flow rate of the intake air in the venturi part can be maintained substantially constant. Note that (13) and (14) are springs set to arbitrary biasing forces.

また、摺動弁(11)の先端にはニードル弁(15)が
突設され、このニードル弁(15)が挿入される主ノズ
ル(16)がボディ(4)に設けられており、ニードル
弁(15)が摺動弁(8)とともに軸方向に移動し、主
ノズル(16)の開口面積を変化させる。主ノズル(1
6)には大気に連通したエアブリード(17)を備え、
主ノズル(16)の基端側には主ノズル(16)内の基
端側の負圧を検出する圧力センサ(18)が装着されて
いる。さらに、ボディ(4)のスロットル弁(5)近傍
には低速ノズル(19)が設けられ、この低速ノズル(
19)の基端部にはアイドル調整用ねじ(20)が装着
されている。また、ボディ(4)には低速ノズル(18
)の基端側に連通ずる連通路(21)が設けられており
、この連通路(21)の他端側に低速ノズル(19)内
の基端側の負圧を検出する圧力センサ(22)が装着さ
れている。尚、図中(23)は圧力センサ(18)と(
22)を覆うようにボディ(4)に固着されたカバーで
あり、このカバー(23)内は穴(24)を通じて大気
に連通されている。
Further, a needle valve (15) is protruded from the tip of the slide valve (11), and a main nozzle (16) into which the needle valve (15) is inserted is provided on the body (4). (15) moves in the axial direction together with the slide valve (8) to change the opening area of the main nozzle (16). Main nozzle (1
6) is equipped with an air bleed (17) communicating with the atmosphere,
A pressure sensor (18) is mounted on the base end side of the main nozzle (16) to detect negative pressure on the base end side within the main nozzle (16). Further, a low speed nozzle (19) is provided near the throttle valve (5) of the body (4), and this low speed nozzle (
An idle adjustment screw (20) is attached to the base end of the idler (19). In addition, the body (4) has a low speed nozzle (18
), and a pressure sensor (22) is provided at the other end of the communication path (21) to detect the negative pressure on the proximal side of the low-speed nozzle (19). ) is installed. In addition, (23) in the figure indicates the pressure sensor (18) and (
22), and the inside of this cover (23) is communicated with the atmosphere through a hole (24).

したがって、主ノズル(16)および低速ノズル(18
)の基端側の圧力PJ(即ちPJH+PJL)と先端側
開口の圧力PMとの関係は、第3図に示すようにスロッ
トル弁(5)の開度θTHに対応した関係となる。その
結果、各圧力センサ(18)および(22)から出力さ
れる検出信号PJHおよびPJLは、可変ベンチュリ型
の気化器における主ノズル(16)および低速ノズル(
18)から噴出される燃料噴出縫に対応した信号として
検知される。
Therefore, the main nozzle (16) and the slow nozzle (18
) The relationship between the pressure PJ on the proximal end side (that is, PJH+PJL) and the pressure PM on the distal opening side corresponds to the opening degree θTH of the throttle valve (5), as shown in FIG. As a result, the detection signals PJH and PJL output from each pressure sensor (18) and (22) are different from the main nozzle (16) and low speed nozzle (
18) is detected as a signal corresponding to the fuel jetting from the engine.

さらに、上記各圧力センサ(18) 、(22)の検出
信号PJH,PJLは制御装置(25)に入力される。
Furthermore, the detection signals PJH and PJL of each of the pressure sensors (18) and (22) are input to the control device (25).

制御装置(25)は、各検出信号PJH,PJLを増幅
するりニヤアンプ(2B) 、(27)と、リニヤアン
プ(2B) 、 (27)により増幅された検出信号P
JHとPJLを加算した信号(PJ)に基ツいて噴射ノ
ズル(2)のソレノイドコイルを通電制御するアナログ
制御部(28)とから構成5れている。尚、本実施例で
は、温度センサ(29)および機関始動時センサ(30
)を備え、これらの検出信号しこより制御信号Pjを補
正する構成である。したがって、噴射ノズル(2)から
噴射される燃ネ゛11−は、1丁亥ベンチより型の気化
器の主ノズル(18)および低速ノズル(18)から噴
出される燃料績に等しいものとなる。
The control device (25) includes linear amplifiers (2B) and (27) that amplify each detection signal PJH and PJL, and a detection signal P amplified by the linear amplifiers (2B) and (27).
It consists of an analog control section (28) that controls the energization of the solenoid coil of the injection nozzle (2) based on a signal (PJ) that is the sum of JH and PJL. In addition, in this embodiment, the temperature sensor (29) and the engine starting sensor (30) are used.
), and the control signal Pj is corrected based on these detection signals. Therefore, the amount of fuel 11- injected from the injection nozzle (2) is equal to the amount of fuel injected from the main nozzle (18) and the low-speed nozzle (18) of the single-bench carburetor.

このように本実施例においては、可変ベンチュリ型の気
化器と同様に1各機種に応じて可変ベンチュリ(3)お
よび−1:ノズル(16)、低速ノズル(19)のセツ
ティングを行なうだけで、スロットル開度に応じた噴射
燃料量を設定でき、従来の如きマイクロコンピュータお
よびメモリマツプが不要とすることができる。また、本
実施例では始動時センサ(30)および温度センサ(2
9)を設けたことにより、機関始動時や温度の補II(
をも容易に行なうことができる。
As described above, in this embodiment, just like the variable venturi type carburetor, the variable venturi (3), the -1: nozzle (16), and the low speed nozzle (19) need only be set according to each model. The amount of injected fuel can be set according to the throttle opening, and a conventional microcomputer and memory map can be eliminated. In addition, in this embodiment, a starting sensor (30) and a temperature sensor (2
9), the temperature supplement II (
can also be easily performed.

(発明の効果) 以1−の説明で明らかな如く本発明によれば、可変ベン
チュリおよび主ノズル、低速ノズル を各機種に応じて
セツティングするだけで、スロットル弁開度に対応した
噴射燃料量をコントロールできるため、機種別の設定が
筒中となり、汎用性を持たせることができる。また、従
来の如きメモリマツプが不要となるため、制御装置が簡
素に構成でき、安価にすることができる。
(Effects of the Invention) As is clear from the explanation in 1-1 below, according to the present invention, the amount of injected fuel corresponding to the throttle valve opening can be adjusted by simply setting the variable venturi, main nozzle, and low-speed nozzle according to each model. Since it is possible to control the settings for each model, it is possible to provide versatility. Furthermore, since a conventional memory map is not required, the control device can be constructed simply and at low cost.

【図面の簡単な説明】[Brief explanation of drawings]

第1図ないし第3図は本発明の一実施例を示し、第1図
はり変ベンチュリを示す縦断面図、第2図は制御装置を
示す概略構成図、第3図はiEノズルおよび低速ノズル
の基端側圧力と先端間[1圧力との関係を示すグラフで
ある。 図面中、(1)は吸気マニホルド、(2)は噴射ノズル
、(3)は可変チェンベリ、(4)はボディ、(5)は
スロットル弁、(8)は摺動弁、(15)は二一ドルブ
「、(18) 、(19)はトノズルおよび低速ノズル
、(+8)、(22)は圧力センサ、(25)は制御装
置、である。
Figures 1 to 3 show an embodiment of the present invention, Figure 1 is a vertical sectional view showing a beam-shaped venturi, Figure 2 is a schematic configuration diagram showing a control device, and Figure 3 is an iE nozzle and a low speed nozzle. It is a graph showing the relationship between the proximal side pressure and the tip [1 pressure]. In the drawing, (1) is the intake manifold, (2) is the injection nozzle, (3) is the variable chamber, (4) is the body, (5) is the throttle valve, (8) is the sliding valve, and (15) is the two-way valve. (18) and (19) are the high speed nozzle and low speed nozzle, (+8) and (22) are the pressure sensors, and (25) is the control device.

Claims (1)

【特許請求の範囲】[Claims] 内燃機関の吸入ポートに臨むよう吸気マニホルドに配設
された噴射ノズルにより燃料を供給する内燃機関の燃料
供給装置において、吸気マニホルドに介装される筒状の
ボディにスロットル弁とこのスロットル弁上流側に配設
された摺動弁とこの摺動弁の先端に突設されたニードル
弁とを有する可変ベンチュリと、前記ボディに形成され
前記ニードル弁が挿入される主ノズルおよび前記スロッ
トル弁近傍で開口する低速ノズルと、これら主ノズルお
よび低速ノズルの基端側の負圧を検出する圧力センサと
、この圧力センサの検出信号に基づき前記噴射ノズルを
通電制御する制御装置と、を備えたことを特徴とする内
燃機関の燃料供給装置。
In a fuel supply system for an internal combustion engine that supplies fuel through an injection nozzle arranged on an intake manifold so as to face the intake port of the internal combustion engine, a cylindrical body installed in the intake manifold includes a throttle valve and a throttle valve on the upstream side of the throttle valve. a variable venturi having a slide valve disposed in the body and a needle valve protruding from the tip of the slide valve; a main nozzle formed in the body into which the needle valve is inserted; and a variable venturi opening near the throttle valve; a low-speed nozzle, a pressure sensor that detects negative pressure on the proximal end side of the main nozzle and the low-speed nozzle, and a control device that controls energization of the injection nozzle based on a detection signal of the pressure sensor. Fuel supply system for internal combustion engines.
JP18262285A 1985-08-20 1985-08-20 Fuel feeding device for internal combustion engine Pending JPS6241967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18262285A JPS6241967A (en) 1985-08-20 1985-08-20 Fuel feeding device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18262285A JPS6241967A (en) 1985-08-20 1985-08-20 Fuel feeding device for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS6241967A true JPS6241967A (en) 1987-02-23

Family

ID=16121506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18262285A Pending JPS6241967A (en) 1985-08-20 1985-08-20 Fuel feeding device for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS6241967A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6974846B2 (en) * 2002-04-29 2005-12-13 E. I. Du Pont De Nemours And Company Hydrolysis resistant polyester compositions and related articles and methods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6974846B2 (en) * 2002-04-29 2005-12-13 E. I. Du Pont De Nemours And Company Hydrolysis resistant polyester compositions and related articles and methods
US7008983B2 (en) * 2002-04-29 2006-03-07 E. I. Du Pont De Nemours And Company Hydrolysis resistant polyester compositions and related articles and methods

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