JPS5923061A - Fuel injection ratio controller for fuel injection valve in diesel engine - Google Patents
Fuel injection ratio controller for fuel injection valve in diesel engineInfo
- Publication number
- JPS5923061A JPS5923061A JP13168782A JP13168782A JPS5923061A JP S5923061 A JPS5923061 A JP S5923061A JP 13168782 A JP13168782 A JP 13168782A JP 13168782 A JP13168782 A JP 13168782A JP S5923061 A JPS5923061 A JP S5923061A
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- engine
- piezoelectric element
- load
- valve body
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/161—Means for adjusting injection-valve lift
Abstract
Description
【発明の詳細な説明】
ディーゼル機関の燃料噴射弁の燃料噴射率ａＢ／ｃ１ｔ
（Ｂは噴油量、ｔは時間）と燃料ポンプを駆動するカム
軸の回転角度との間の関係を示す曲線の形状（以下にお
いては、表現を簡単にするだめ、この形状を噴射率パタ
ーンと呼ぶこととする。）はノズルの弁体に着座力を及
ばずプレノ／ヤスグリングの七ノド荷重により定甘り、
セット荷重の選定に当っては、低速、低負荷運転時に機
関の運転が不安定とならないようにすることが配慮され
る。[Detailed description of the invention] Fuel injection rate aB/c1t of a fuel injection valve of a diesel engine
(B is the amount of oil injected, t is time) and the rotation angle of the camshaft that drives the fuel pump. ) does not exert a seating force on the valve body of the nozzle, and is kept at a constant level by the seven-throttle load of the preno/yasu ring.
When selecting the set load, consideration is given to ensuring that engine operation does not become unstable during low-speed, low-load operation.
七ソ］・荷重のみにより噴射率パターンが定寸ると云つ
前提の下においてｄ：、低速、低負荷時において機関の
運転が不安定なものとならないようにすると云う条件が
、他の運転状態に対する制約を加え、高速、高負荷時に
おいて充分な霧化を燃料に与え得るようにする七ノド荷
重を選定し得ないようにする。更に、噴射率パターンに
ついては、高速、高負荷時および低速、低負荷時のみな
らず、それらの間の中間状態においても好ましいものと
して出来得れば実現させたいものがある。Under the assumption that the injection rate pattern is determined by the load alone, the condition that the engine operation is not unstable at low speeds and low loads is that other operations By adding constraints to the state, it is impossible to select a seven-node load that can provide sufficient atomization to the fuel at high speeds and high loads. Furthermore, regarding the injection rate pattern, it is desirable to realize a preferable one not only at high speed and high load, and at low speed and low load, but also in an intermediate state between these.
本発明は、上記事情にかんがみ、機関の回転速度および
負荷の変動に追随しつつ噴射率パターンを変える制御装
置の開発を意図するもので、本発明を図について説明す
れば次の如くである。In view of the above circumstances, the present invention intends to develop a control device that changes the injection rate pattern while following fluctuations in engine speed and load.The present invention will be explained with reference to the drawings as follows.
第１図において、［１１はノズル、（２）はその弁体、
（３）はノズルホルダ、（４１−プレノン−＼・ピン、
（５１は弁体（２）に着座力を及ぼすプレッシャスプリ
ングで、これらは燃料噴射弁に設けられるよく知られた
構成部品である。In FIG. 1, [11 is a nozzle, (2) is its valve body,
(3) is the nozzle holder, (41-plenon-\pin,
(51 is a pressure spring that exerts a seating force on the valve body (2), and these are well-known components installed in a fuel injection valve.
ノズルホルダ（３）の内部には、弁体（２）のリフト量
を制限する要素（６）が設けられる。この要素（６）は
、機関の運転状態の変化に伴って長さを変えるもので、
長さの変化はそれに含まれる圧電素子に加わる電圧の変
化による。圧電素子に加えられるべき電圧は極めて高く
、例えば１２０００ ｖと云うような値に達する。この
だめ、要素（６）における圧電素子は、接地状態に置か
れる下端部を除き、高電圧に耐える外被筒内に納められ
る。圧電素子としてｄ。An element (6) that limits the amount of lift of the valve body (2) is provided inside the nozzle holder (3). This element (6) changes its length as the operating condition of the engine changes.
The change in length is due to the change in voltage applied to the piezoelectric element contained therein. The voltage that must be applied to the piezoelectric element is extremely high, reaching values of, for example, 12000 volts. In this case, the piezoelectric element in element (6) is housed in a jacket tube that withstands high voltages, except for the lower end which is placed in a grounded state. d as a piezoelectric element.
半導体素子（例えばシリコン半導体素子）を積層したも
のを使用することが望せしい。It is desirable to use a stack of semiconductor elements (for example, silicon semiconductor elements).
（７）は要素（６）における圧電素子の制御器で、コン
ピータ（８）と、コンピータの出力電圧を増幅する電圧
増幅器（９）とより成る。（川１ ＋Ｉｌ＋はコンピュ
ータ（８）への入力信号（機関の回転速度および負荷）
で、コンピュータ（８）は、メモリに従い入力信号に応
じる電圧を発生ずる。(7) is a controller for the piezoelectric element in element (6), which is composed of a computer (8) and a voltage amplifier (9) that amplifies the output voltage of the computer. (River 1 +Il+ is the input signal to the computer (8) (engine speed and load)
Then, the computer (8) generates a voltage according to the input signal according to the memory.
要素（６）の上端面（１２）の位置はノズルホルダ（３
）にねじ込まれた調節ねしく１３）を適宜回動すること
により所望の如く定められる。（１４）はブレノンヤス
プリング（５）の調節ねし、ｆｌ！ｉｌ （１６１は調
節ねしｔ１３１ ｆ＋４１の固定用ナンドである。The position of the upper end surface (12) of the element (6) is
) is set as desired by appropriately rotating the adjustment screw 13) screwed into the hole. (14) is for adjusting the Brennon spring (5), fl! il (161 is a lock for fixing the adjustment screw t131 f+41.
グレノ／ヤピン（４）上のカラ一部ｔ＋７との間の距離
りは、機関の回転速度および負荷の関数である。The distance between collar part t+7 on Greno/Yapin (4) is a function of engine speed and load.
距離りは所定の低速、低負荷時において最大値をとり、
以後、機関の回転速度および負荷の増大に伴って減少す
る。距１ＩｉＩＩＩＬの減少は噴射圧の増大をもたらし
、距離りの増大は噴射圧の減少をもだらずので、距離り
の制御により噴射率パターンの制御を行うことができる
。この制御は、さきに指摘した従来のものの問題点（低
速、低負荷時において機関の運転が不安定なものとなら
ないようにするためには、高速高負荷時において充分な
霧化を燃料に力え得ないようなセント荷重の選択を余儀
なくされる点）を簡単に解消すると共に、車両の用途に
理想的なものとして選択されたものに近い機関特性が機
関に与えられるようにするものである。The distance takes the maximum value at the specified low speed and low load,
Thereafter, it decreases as the engine speed and load increase. A decrease in the distance 1IiIIIL causes an increase in the injection pressure, and an increase in the distance does not result in a decrease in the injection pressure, so the injection rate pattern can be controlled by controlling the distance. This control has the problem of the conventional method pointed out earlier (in order to prevent engine operation from becoming unstable at low speeds and low loads, sufficient atomization is applied to the fuel at high speeds and high loads). This method easily eliminates the problem of being forced to select an impossible cent load, and also provides the engine with engine characteristics close to those selected as ideal for the vehicle's application. .
第１図に示す実施例においては要素（６）カスブレソ／
ヤスプリング（５）を囲む中空筒体として設けられてい
るが、この要素は第２図（こ示す女口く、ブレノンヤス
プリングの位置を避けて上方（こ目安けることにより、
それをソリ丹のものと１−ることカーできる。第２図に
示すものは第１１〕（こ示１−ものと同様の作用を行う
ものであるので、第２図番こついては′“ａ、 １１
を付加し、例えば第１１スζこ示すもの（こおける要素
（６）に対応するものカー第２図（こ示１−もの（こお
いてはそれが（６ａ）となっていることを示−１−（こ
ととめる。In the embodiment shown in FIG.
This element is provided as a hollow cylindrical body surrounding the second spring (5), and this element is shown in Fig.
You can call it one of Soritan's. The one shown in Figure 2 has the same function as the one shown in Figure 1-1, so the number in Figure 2 is 'a', 11
For example, in the 11th line -1- (Kotomeru.
第１図は本発明による噴射率ｆｆｉ制御装置の１ ｆｌ
ｌを示し、第２図は第１図に示すものの変形を示−→−
０Ｉｌｌ（１ａ）・・・ノズル ＋２＋（２ａ）・・・
弁体 ｒ＋＋（３ａ）・・・ノズルホルダ ＋４＋（４
ａ）・・・グレソシャビン ＋５＋（５ａ）・・・フ。
レノシャスプリング ＋６＋（６ａ）・・・弁イ４【０
１リフト量ヲ制限する要素 （７）・・・制御器 （８
）・・・コンビニ、−タ（９）・・・電圧増幅器 ＋１
［１０１１・・・入力信号 （１２１・・・要素（６）
の上端面 １１３１ （１３ａ戸１４）・・・調節ねじ
（１５１（１５ａ ） １１６１・・・固定用ナンド
（１７１・・・カラ一部FIG. 1 shows 1 fl of an injection rate ffi control device according to the present invention.
Figure 2 shows a modification of the one shown in Figure 1.
0Ill(1a)...Nozzle +2+(2a)...
Valve body r++ (3a)... Nozzle holder +4+ (4
a)...Gresoshabin +5+(5a)...F. Lenosha Spring +6+(6a)...Valve I4[0
Elements that limit the amount of lift per lift (7)...Controller (8
)...Convenience store, -ta (9)...Voltage amplifier +1
[1011... Input signal (121... Element (6)
Upper end surface 1131 (13a door 14)...adjustment screw (151 (15a)) 1161...fixing nand (171...part of the collar)
Claims (1)
ノズルホルダ内に設け、印加される電圧の変化に伴って
長さを変える圧電素子を含んで上記要素を構成すると共
に、機関の回転速度および負荷を入力としてこの圧電素
子に加わる電圧をメモリに従いつつ制御する制御装置を
設けたことを特徴とする、ディーゼル機関の燃料噴射弁
の燃料噴射率制御装置。An element that limits the amount of lift given to the valve body of the nozzle is provided in the nozzle holder, and the element includes a piezoelectric element whose length changes in accordance with changes in the applied voltage, and also includes an element that limits the amount of lift given to the valve body of the nozzle. 1. A fuel injection rate control device for a fuel injection valve of a diesel engine, characterized in that a control device is provided for controlling the voltage applied to the piezoelectric element according to a memory using a load as an input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13168782A JPS5923061A (en) | 1982-07-28 | 1982-07-28 | Fuel injection ratio controller for fuel injection valve in diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13168782A JPS5923061A (en) | 1982-07-28 | 1982-07-28 | Fuel injection ratio controller for fuel injection valve in diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5923061A true JPS5923061A (en) | 1984-02-06 |
Family
ID=15063863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13168782A Pending JPS5923061A (en) | 1982-07-28 | 1982-07-28 | Fuel injection ratio controller for fuel injection valve in diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5923061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001090570A1 (en) * | 2000-05-23 | 2001-11-29 | Caterpillar Inc. | Variable check stop for micrometering in a fuel injector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4857018A (en) * | 1971-11-17 | 1973-08-10 | ||
| JPS5666449A (en) * | 1979-11-05 | 1981-06-04 | Nissan Motor Co Ltd | Fuel injection valve |
| JPS572258B2 (en) * | 1975-11-14 | 1982-01-14 |
-
1982
- 1982-07-28 JP JP13168782A patent/JPS5923061A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4857018A (en) * | 1971-11-17 | 1973-08-10 | ||
| JPS572258B2 (en) * | 1975-11-14 | 1982-01-14 | ||
| JPS5666449A (en) * | 1979-11-05 | 1981-06-04 | Nissan Motor Co Ltd | Fuel injection valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001090570A1 (en) * | 2000-05-23 | 2001-11-29 | Caterpillar Inc. | Variable check stop for micrometering in a fuel injector |
| US6568602B1 (en) | 2000-05-23 | 2003-05-27 | Caterpillar Inc | Variable check stop for micrometering in a fuel injector |
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