JPS59162361A - Fuel pressure controller of fuel injection device - Google Patents
Fuel pressure controller of fuel injection deviceInfo
- Publication number
- JPS59162361A JPS59162361A JP58035979A JP3597983A JPS59162361A JP S59162361 A JPS59162361 A JP S59162361A JP 58035979 A JP58035979 A JP 58035979A JP 3597983 A JP3597983 A JP 3597983A JP S59162361 A JPS59162361 A JP S59162361A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- fuel
- air chamber
- orifice
- throttle 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
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
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/467—Devices using intake air for generating a control signal acting on fuel delivery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、燃料噴射装置の燃料圧力制御装置ｉに係り、
特に絞弁の開度に関連する吸気筒内の圧力を燃圧レギュ
レータの空気室に伝えて運転状態の変化に好適な空燃比
に制御しかつ空気室への圧力の伝達の信頼性を向上させ
るものに関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a fuel pressure control device i for a fuel injection device,
In particular, it transmits the pressure in the intake cylinder related to the opening degree of the throttle valve to the air chamber of the fuel pressure regulator, controls the air-fuel ratio to be suitable for changes in operating conditions, and improves the reliability of pressure transmission to the air chamber. Regarding.
エンジンの排気性能華燃費を向上することを目的として
燃料噴射装置の採用が拡大されている。Fuel injection devices are increasingly being used to improve engine exhaust performance and fuel efficiency.
燃料噴射装置としては、エンジンの容気筒に独立した燃
料噴射弁を取シ付ける方式と各気筒に連通した吸気マニ
ホールドに共通の単一または複数の燃料噴射弁を取シ付
けたものが公知である。As fuel injection systems, two types of fuel injection systems are known: one in which independent fuel injection valves are installed in each cylinder of an engine, and the other in which a common single or multiple fuel injection valves are installed in an intake manifold that communicates with each cylinder. .
上記した燃料噴射弁から供給する燃料は、燃料ポンプで
加圧してツユエルニップル８に送られる。The fuel supplied from the fuel injection valve described above is pressurized by a fuel pump and sent to the fuel nipple 8.
この燃料は、燃料噴射弁６の周囲を通９通路９を介して
燃圧レギュレータ１０に供給される。燃圧レギュレータ
１０は、 ｆｔｒ制御バネ１４とダイヤフラム２０で一
体的に構成した制御弁１１を用いて略一定の燃料圧力に
制御する。１ｉｌＪ御バネ１４を配設した空気室１３し
こは絞弁５の下流の吸気圧力金伝退する方式が一般的で
ある。しかし運転中に発生するバツクファイアによシダ
イヤフラム２０が過圧されて破壊して多量の燃料が吸気
マニホールドに＋Ｈ人されてエンジンを停止することや
オーバーラツプの大きい高速型のエンジンやアフターバ
ーンが発生した時に生ずる排気ガスの逆流またはガソリ
ン中のガム質などが燃圧し、ギュレータ１０の空気室１
３への圧力通路１８の入口に付着して圧力伝達速度を低
下させて燃料圧力の制御性全低下する。This fuel passes around the fuel injection valve 6 and is supplied to the fuel pressure regulator 10 via nine passages 9. The fuel pressure regulator 10 controls the fuel pressure to a substantially constant level using a control valve 11 integrally formed with an FTR control spring 14 and a diaphragm 20. The air chamber 13 in which the 1ilJ control spring 14 is arranged generally has a system in which the intake pressure is transmitted downstream of the throttle valve 5. However, the backfire that occurs during operation overpressurizes the diaphragm 20 and destroys it, resulting in a large amount of fuel being pumped into the intake manifold, causing the engine to stop, and for high-speed engines with large overlap, afterburn. The backflow of exhaust gas or gum in gasoline that occurs when
3 at the inlet of the pressure passage 18, reducing the pressure transmission speed and completely reducing the controllability of the fuel pressure.
また運転中には、多くの加速・減速運転を繰シ返えし、
それらの運転の変化に好適な空燃比とすることが必要で
ある。最近は、マイクロコンピュータ−を利用した１ｉ
７１Ｊ御方法が拡大されているが、上記した加減速の判
別や程度を検知するためには絞弁開贋の角速度・吸気圧
力の変化、エンジン回転数の変化などの晴報が必要であ
る。これらのセンサ類を使用する方法は、制御性を拡大
する点では有利な面を持っているが、−個でも故障する
と制御性を低下したシ、機能を停止することが多い。Also, while driving, many accelerations and decelerations are repeated,
It is necessary to set an air-fuel ratio suitable for these changes in operation. Recently, 1i using microcomputer
Although the 71J control method has been expanded, in order to distinguish and detect the degree of acceleration/deceleration described above, it is necessary to have clear information such as changes in the angular velocity of throttle valve opening, changes in intake pressure, and changes in engine speed. The method of using these sensors has the advantage of expanding controllability, but if even one of them fails, controllability is reduced and the function often stops.
本発明では、これらの点を解消するために燃圧レギュレ
ーター１０の空気室１３への圧力を絞弁５の開度により
制御する圧力ボートから伝えるものである。 。In the present invention, in order to solve these problems, the pressure to the air chamber 13 of the fuel pressure regulator 10 is transmitted from a pressure boat controlled by the opening degree of the throttle valve 5. .
〔発明の実施例〕
第１図は、絞弁５の上流に燃料噴射弁６を配置して複数
の気筒に共通に制御し供給する燃料で混合気を形成する
ものに、本発明を利用したものである。絞弁５の下流側
に開口したオリフィス囚１５と上流側に開口したオリフ
ィスＱ３）１６の合成圧力を空気室１３に供給する。ア
イドル運転時や絞弁５の側端部がオリフィス［Ｆ］）１
６の付近にいたるまでは、第２図に示すように、絞弁５
の下流の吸気圧力が支配的で大気圧に比べて低い圧力が
伝達される。しかし加速時には、吸気圧力の上昇と共に
空気室の圧力が上昇して燃圧レギュレータでの燃料圧力
を高めて燃料噴射弁６からの燃料の供に＠量を増加させ
る。また減速時には、絞弁５の下流圧力が低下するため
オリフィス■１５からの負圧の割合が増し空気室１３の
圧力を低下して空燃比を希薄化して有害排気ガスの低減
と燃費を向上する。[Embodiment of the Invention] Fig. 1 shows a fuel injection valve 6 disposed upstream of a throttle valve 5 to form an air-fuel mixture with fuel commonly controlled and supplied to a plurality of cylinders, in which the present invention is utilized. It is something. The combined pressure of the orifice 15 opened on the downstream side of the throttle valve 5 and the orifice Q3) 16 opened on the upstream side is supplied to the air chamber 13. During idling operation, the side end of the throttle valve 5 becomes an orifice [F]) 1
As shown in Fig. 2, the throttle valve 5
The intake pressure downstream of is dominant, and a pressure lower than atmospheric pressure is transmitted. However, during acceleration, the pressure in the air chamber increases as the intake pressure increases, increasing the fuel pressure at the fuel pressure regulator and increasing the amount of fuel from the fuel injection valve 6. Furthermore, during deceleration, the downstream pressure of the throttle valve 5 decreases, so the proportion of negative pressure from the orifice 15 increases, lowering the pressure in the air chamber 13 and diluting the air-fuel ratio, reducing harmful exhaust gases and improving fuel efficiency. .
またオリフィス［Ｆ］）１６には、ノズル７から噴射さ
れた燃料の一部や蒸気が流入しオリフィス囚１５から流
出する。したがってオリフィス（Ａ）５やオリフィスＣ
Ｂ＋６は、運転中に洗浄されてカーボンの付着が防止さ
れて□常に好適な圧力が空気室１３に導入される。また
アフターバーンやバツクファイア発生時の高圧は、オリ
フィス（工５〕で減衰されながらオリフィス■６に流出
されるためダイヤフラムへの過圧の伝Ｍｋ防止する。Also, a part of the fuel and steam injected from the nozzle 7 flow into the orifice [F]) 16 and flow out from the orifice 15. Therefore, orifice (A) 5 and orifice C
B+6 is cleaned during operation to prevent carbon from adhering, and a suitable pressure is always introduced into the air chamber 13. In addition, high pressure when afterburn or backfire occurs is attenuated by the orifice (5) and flows out to the orifice (6), thereby preventing overpressure from being transmitted to the diaphragm.
縞１図は本発明による燃料噴射装置の燃料圧力制御装置
のＲ断面図、第２図は本発明による特性を示した図であ
る。
５・・・絞弁、６・・・燃料噴射弁、１ｏ・・・燃圧レ
ギュレ−１−，１３・・・９気室、１５ 、 １６・・
・オリフィス。FIG. 1 is a sectional view taken along the line R of a fuel pressure control device for a fuel injection device according to the present invention, and FIG. 2 is a diagram showing characteristics according to the present invention. 5... Throttle valve, 6... Fuel injection valve, 1o... Fuel pressure regulator 1-, 13... 9 air chamber, 15, 16...
・Orifice.
Claims (1)
の噴射量を決定し制御する燃料噴射装置において、燃圧
レギュレータの制御用バネを配設した空気室に絞弁の上
流と下流とで合成した圧力を伝達することを特徴とした
燃料噴射装置の燃料圧力制御装置。1. In a fuel injection system that determines and controls the amount of pressurized fuel to be injected based on information about the engine's operating conditions, an air chamber equipped with a control spring for the fuel pressure regulator is combined with the air chamber upstream and downstream of the throttle valve. A fuel pressure control device for a fuel injection device characterized by transmitting pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58035979A JPS59162361A (en) | 1983-03-07 | 1983-03-07 | Fuel pressure controller of fuel injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58035979A JPS59162361A (en) | 1983-03-07 | 1983-03-07 | Fuel pressure controller of fuel injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59162361A true JPS59162361A (en) | 1984-09-13 |
Family
ID=12457006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58035979A Pending JPS59162361A (en) | 1983-03-07 | 1983-03-07 | Fuel pressure controller of fuel injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59162361A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6231771U (en) * | 1985-08-12 | 1987-02-25 | ||
| US4905651A (en) * | 1987-04-30 | 1990-03-06 | Weber S.R.L. | Device for forming and metering an air and fuel mixture for an internal combustion engine |
-
1983
- 1983-03-07 JP JP58035979A patent/JPS59162361A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6231771U (en) * | 1985-08-12 | 1987-02-25 | ||
| US4905651A (en) * | 1987-04-30 | 1990-03-06 | Weber S.R.L. | Device for forming and metering an air and fuel mixture for an internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4664076A (en) | Intake system for internal combustion engine | |
| JPH0742861B2 (en) | Internal combustion engine intake system | |
| US4086897A (en) | Evaporated fuel feed control device for an internal combustion engine | |
| JPH02277919A (en) | Suction device of multi-cylinder engine | |
| US3669424A (en) | Carburetor of variable-area venturi type | |
| US4411228A (en) | Split type internal combustion engine | |
| US4289103A (en) | Altitude compensating device of an internal combustion engine | |
| JPS59162361A (en) | Fuel pressure controller of fuel injection device | |
| US4010723A (en) | Exhaust gas cleaning apparatus for an internal combustion engine for a vehicle | |
| JPS6090935A (en) | Idling-speed controlling apparatus for internal- combustion engine with supercharger | |
| US4541384A (en) | System for controlling the air-fuel ratio supplied to an engine | |
| JPS60195344A (en) | Speed controller for multicylinder internal-combustion engine | |
| JPS6041217B2 (en) | Enrichment device for internal combustion engine carburetor | |
| JP2530101Y2 (en) | Engine stall prevention device for deceleration of outboard motor with supercharger | |
| JPS64587B2 (en) | ||
| JPS6038039Y2 (en) | Engine air-fuel ratio control device | |
| JPS597570Y2 (en) | Exhaust recirculation device for engine with cylinder number control | |
| JPS628627B2 (en) | ||
| JPS6314055Y2 (en) | ||
| JPS63223357A (en) | Fuel supply device of engine | |
| JPH01159415A (en) | Intake device for multiple inlet valve type engine | |
| JPH0622137Y2 (en) | Vaporizer acceleration pump device | |
| JPS638840Y2 (en) | ||
| JPS6287627A (en) | Air-fuel feed controlling method for internal combustion engine | |
| JPS6146658B2 (en) |