JPS606045A - Fuel injecting device of internal-combustion engine - Google Patents
Fuel injecting device of internal-combustion engineInfo
- Publication number
- JPS606045A JPS606045A JP58113779A JP11377983A JPS606045A JP S606045 A JPS606045 A JP S606045A JP 58113779 A JP58113779 A JP 58113779A JP 11377983 A JP11377983 A JP 11377983A JP S606045 A JPS606045 A JP S606045A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- gas recirculation
- correction
- combustion engine
- learning
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2409—Addressing techniques specially adapted therefor
- F02D41/2416—Interpolation techniques
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2441—Methods of calibrating or learning characterised by the learning conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2454—Learning of the air-fuel ratio control
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、排気ガス還流装置Ｉ７７を付加したスピー
ドデンシティ方式の内燃機関燃料噴射装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speed density type internal combustion engine fuel injection system to which an exhaust gas recirculation device I77 is added.
従来のスピードデンシティ方式の燃料噴射装置は負圧で
吸入空気量を検知し回転数で補ｉ、ＩＥ ｊ、て基本燃
料漏−をめるもの、あるいは負圧と回転数の２次元マツ
プを用いて基本燃料侑−を設定するものが知られている
。Conventional speed-density type fuel injection systems detect the amount of intake air using negative pressure and compensate for it based on the rotational speed, or use a two-dimensional map of negative pressure and rotational speed. There is a known method for setting the basic fuel level.
また、これにｉ０気ガス中の酸素濃度を検出する０、セ
ンサを組み合わせて周知の積分制御を行ない、空燃比を
理論空燃比に制御する装置も知られている。Furthermore, there is also known a device that combines this with a sensor that detects the oxygen concentration in the i0 gas to perform well-known integral control to control the air-fuel ratio to the stoichiometric air-fuel ratio.
ところが、空燃比を理論空燃比になるよう制御すると、
ＮＯｘが増大することから上記装置に排気ガス、、ｌ；
−ｊ流装置をイ；］加することが必要に々ってきた。However, when controlling the air-fuel ratio to the stoichiometric air-fuel ratio,
Exhaust gas to the above equipment due to increased NOx;
It became necessary to add a flow device.
しかし、スピードデンシティ方式では、排気ガス還流装
＋Ｋｔが作動１″ると負圧が新気の圧力を示さ４二〈な
り、基本燃料量に基づき燃イ、・１供給すると空燃比は
リッチ側に移行する。However, in the speed density method, when the exhaust gas recirculation system +Kt is activated 1", the negative pressure indicates the pressure of fresh air and becomes 42, and if 1 is supplied based on the basic fuel amount, the air-fuel ratio shifts to the rich side. Transition.
そこで、０２センサを用い／こ学習機能により排気ガス
還流装置が作動するときは上記基本燃料量より少ない燃
料量を設定することが考えられ、神々の要因によシ機関
が予め設定された空燃比からずれた場合には、これを補
イハする学習制御手段が望−止れる。Therefore, when the exhaust gas recirculation system operates using the 02 sensor/learning function, it is possible to set a fuel amount smaller than the above basic fuel amount, and due to divine factors, the engine will be able to adjust to the preset air-fuel ratio. If there is a deviation, a learning control means is required to compensate for this deviation.
従来、この種の動作状態に対応するものとして、たとえ
ば、（負圧、回転数）で区分けしてその領域毎に学習し
補正値を記憶し、この値をその領域の補正値として用い
る方法が知られていた。Conventionally, as a method to deal with this type of operating condition, for example, there is a method of dividing the system by (negative pressure, rotation speed), learning and storing a correction value for each area, and using this value as the correction value for that area. It was known.
ととろが、上記排気ガス還流装置を付加したときは、同
一（負圧、回転数）の動作点でもこの排気ガス還流装置
の作動・非作動に対して新気の量が異なシ、機関の動作
状態が異なる。When Totoro added the above exhaust gas recirculation device, even at the same operating point (negative pressure, rotation speed), the amount of fresh air will differ depending on whether the exhaust gas recirculation device is activated or not, and the engine operation will be different. Conditions are different.
そこで、上記排気力゛ス還流装置の作動・非作動に対応
してそれぞれ独立に上記学習制御による補正を行なうこ
とが考えられる。Therefore, it is conceivable to perform the correction by the learning control independently depending on whether the exhaust gas recirculation device is activated or deactivated.
しかるに、通常、上記学習制御は暖機完了後行なわれ（
ただし補正値は暖気完了前にも適用される）、上記排気
ガス還流装置はドライバビリティの点から通常冷却水温
４０〜５０・℃以上で作動するよう設定される。However, the above learning control is usually performed after warm-up is completed (
However, the correction value is applied even before the warm-up is completed.) From the viewpoint of drivability, the exhaust gas recirculation device is normally set to operate at a cooling water temperature of 40 to 50° C. or higher.
したがって、本来上記排気ガス還流、装ｊべが作動ずべ
き運転領域で冷却水温が低くて上記装置￥１が作動しな
い運転領域は上記学習制御ができないという欠点がある
。Therefore, there is a drawback that the learning control cannot be performed in an operating region where the exhaust gas recirculation and equipment should normally operate, but where the cooling water temperature is low and the device does not operate.
この発明−一、上記従来の欠点を解消して、排気ガス還
流装置の作動時・非作動時とともに学習制御を行ない、
きめ細かい空燃比制御を行なう内燃機関燃料噴射装置を
捺供することを目的としている。This invention - 1. Eliminating the above-mentioned conventional drawbacks, learning control is performed when the exhaust gas recirculation device is activated and not activated,
The purpose is to provide an internal combustion engine fuel injection device that performs fine air-fuel ratio control.
以下、この発明の内燃機関燃料噴射装置の実Ｍ１１例に
ついて図面に基づき説明する。第１図はその一実施例の
概略構成を示す図でるる。この第１図において、１はエ
アクリーナ、２は吸入空気をシリング３へ導く吸気管、
４ｋ」、上記空気量を調整する絞り弁、５け上記吸気管
２の側壁にあってかつ上記絞り弁４の近傍の下流側に備
えられ、この吸気管２内の負圧を検知する半導体負圧セ
ンサで、負圧信＋３５ａを出力する。Hereinafter, an actual M11 example of the internal combustion engine fuel injection device of the present invention will be explained based on the drawings. FIG. 1 is a diagram showing a schematic configuration of one embodiment. In this FIG. 1, 1 is an air cleaner, 2 is an intake pipe that guides intake air to a shilling 3,
4k'', a throttle valve for adjusting the amount of air; The pressure sensor outputs a negative pressure signal +35a.
６に排気管、７ ｈｒ土土耕排気管６取勺旬けられて刊
気ガス中の酸素濃度を４小出する。２センザで、リッチ
（濃い）、リーン（Ｒい）イ月刊７ａを１１４力する。6 is an exhaust pipe, 7 hr soil cultivation exhaust pipe is removed and the oxygen concentration in the air gas is extracted 4 times. With 2 sensors, 114 liters of rich, lean, monthly 7a are produced.
’ｊＪｌ：気ガス還原ガス還流装置８ノイドバルブ９、
ＢＰＴ ］ ＯオよびＥＧＩＺバルブ１１を備えている
。'jJl: Air gas recirculation device 8 noid valve 9,
BPT ] O and EGIZ valves 11 are provided.
このソレノイドバルブ９ （ｒＪ、後述の制御装Ｒ１，
３からの指令信号１３ａにょシ吸気管負圧あるいＵ二人
気圧を選択するように構成されている。This solenoid valve 9 (rJ, control device R1 described later,
The command signal 13a from 3 is configured to select either the negative intake pipe pressure or the two-person pressure.
ｔｒｃ、 こ（７）ＢＰＴＩＯは上記ソレノイドバルブ
９が選択した圧力を刊、気ガス圧力に応じてコントロー
ル負圧に変換するものであり、このＥＧＲパルプ１ｌｆ
ｄこのコントロール負圧に応じて用原ガスを吸気管２に
導入するように構成されている。trc, (7) BPTIO converts the pressure selected by the solenoid valve 9 into a control negative pressure according to the gas pressure, and this EGR pulp 1lf
d The raw gas is introduced into the intake pipe 2 in accordance with this control negative pressure.
１２（・まイグニション信号１２ａを出力するイグニシ
ョンコイルであシ、また、１１川省４ｊ装置？Ｑ １３
は、上記負圧センサ５の負圧信号５ａおよび上記イグニ
ションコイル１２のイグニション信号１２ａを入力し、
との負圧信号５ａ、イグニション１ｔ３ 勾１２ａＫ基
づいて基本燃料量を演ｑ゛シ、上記０２センサ７からの
ｍ力信号７ａによシフイードバック制御および学習制御
を行ない、寸た予め設定されｔ川原ガス還流装置８の作
動状態に応じて自ら出力する指令信号１３ａでソレノイ
ドバルブ９を作ｑ）させ、上述の演Ｒ１および制御で得
た最終の噴射燃刺量Ｇｆを対応する出力パルスのパルス
幅に変換し、１ｉＪ弁パルス１３ｂを出力して燃料噴射
弁１４を駆動するように構成されている。12 (・Is it an ignition coil that outputs the ignition signal 12a? Also, is it an ignition coil that outputs the ignition signal 12a?
inputs the negative pressure signal 5a of the negative pressure sensor 5 and the ignition signal 12a of the ignition coil 12,
The basic fuel amount is calculated based on the negative pressure signal 5a of the ignition 1t3 and the ignition gradient 12aK, and the shift feedback control and learning control are performed based on the m force signal 7a from the 02 sensor 7, and the preset t rivera is calculated. The solenoid valve 9 is operated (q) with the command signal 13a outputted by itself according to the operating state of the gas recirculation device 8, and the pulse width of the output pulse corresponding to the final injection fuel stabilization amount Gf obtained by the above-mentioned operation R1 and control is , and outputs a 1iJ valve pulse 13b to drive the fuel injection valve 14.
第２図１は制御装置１３のブロック図であシ、図中、Ｃ
１はイグニションコイル１２のイグニション信号１２ａ
の周期の逆数を演算し、機関回転数（以Ｆ回転数という
）をめる回転数演算部、Ｃ２は回転数演算部ＣＩで得ら
れる回転数と、角圧センサ５の負圧信号５ａで与えられ
る負圧とで決められる１−負圧・回転数領域］が予め設
定された排気ガス還流制御領域内であるがどうかを１′
Ｉ」定するＪＣＧ ＲＹＩＪ定部である。FIG. 2 1 is a block diagram of the control device 13, and in the figure, C
1 is the ignition signal 12a of the ignition coil 12
C2 is a rotation speed calculation unit that calculates the reciprocal of the period of the engine and calculates the engine rotation speed (hereinafter referred to as F rotation speed). 1-Negative pressure/rotational speed range determined by the given negative pressure] is within the preset exhaust gas recirculation control range.
This is the JCG RYIJ constant section.
Ｃ３は上記（回転数・負圧）で予め決められた基本燃料
量Ｇｆｏを算定する基本燃料量演算部、Ｃ４は上記０２
センツ゛７のリッヂ、リーン信号７ａに応じて積分制御
の操作量としての積分補ＩＥ値を生ずるＡ、ｔ′ツ゛分
袖正部である。C3 is the basic fuel amount calculation unit that calculates the basic fuel amount Gfo determined in advance based on the above (rotation speed and negative pressure), and C4 is the above 02
The ridge of center point 7 is the A, t' division correct part which generates the integral compensation IE value as the manipulated variable of integral control in response to the lean signal 7a.
Ｃ５は存を分補正部Ｃ４の出力の平均値、すなわち学習
制御補正値をめる平均値演算部、Ｃ６は基本燃料量Ｇｆ
ｏ Ｋ積分補正を行なうための采γｒ器、Ｃ７、Ｃ８１
：Ｊ、それぞれ排気ガス速流イｂＵ ｐ４１４＠ ｆｙ
’−３の作動、非作動に対応して設けらＪまた学’ｆＶ
制御ｊｌ補正用テーブルメモリ（以下体重１．ＩＩｆ）
チー グツトメモリ、非作動時テーブルメモリというつ
で、上記（負圧、回転数）でテーブル・ルックアップが
できるようにイ１４成されている。C5 is the average value of the output of the balance correction unit C4, that is, the average value calculation unit that calculates the learning control correction value, and C6 is the basic fuel amount Gf.
o γr device for performing K-integral correction, C7, C81
:J, respectively exhaust gas fast flow bU p414 @ fy
It is provided in response to the operation and non-operation of '-3.
Table memory for control jl correction (hereinafter referred to as weight 1.IIf)
The engine is called a command memory and a non-operating table memory, which are designed to allow table look-up at the above (negative pressure, rotational speed).
Ｃ９は１’２ Ｇ １．を判定部ｃ２がらの指令にょシ
、平均値演算部Ｃ５から出力された学習制御補正値の送
出先として作動時テーブルメモリＣａｔたは非作動時テ
ーブルメモリＣ８のいずれ〃１をそ−ｈ−ぞれ接点Ｓｌ
ａ ＋ Ｓ１’Ｔ）で選択する第１のスイッチで、上記
学習制御補正値を送出されたテーブルメモリは負圧、回
転数により予め定められた領域のデープルメモリ値が更
新されるように構成されている。C9 is 1'2 G 1. When a command is issued from the judgment unit c2, either the operating table memory Cat or the non-operating table memory C8 is selected as the destination of the learning control correction value output from the average value calculation unit C5. contact SL
The table memory to which the learning control correction value is sent by the first switch selected by a+S1'T) is configured so that the table memory value in a predetermined area is updated according to the negative pressure and rotation speed. has been done.
ＣＩＯは上記Ｅ Ｇ Ｒ判定部Ｃ２の指令により、上述
のスイッチＣ９と同様に作動時および非作動時テーブル
メモ！７Ｃｊ、Ｃ８の出力をそり、ぞれの接点ＳＪａ
ＨＳ２ｂで選択する第２のスイッチである。In response to the command from the EGR determination section C2, the CIO writes a table memo when it is activated and when it is not activated in the same way as the switch C9 described above! 7Cj and C8 outputs are bent, and each contact SJa
This is the second switch selected by HS2b.
Ｃ１２は乗舅器Ｃ６の出力である基本燃ネ・１＃Ｇｆ。C12 is the basic fuel oil 1#Gf which is the output of the passenger unit C6.
と積分補正値との積、すなわち補正基本燃料量Ｇｆｏ’
に平均値演算部Ｃ５の出力である学習制御補正値を乗じ
た一値、すなわち噴射燃刺稲０１を上記作動時デープル
メモ＋ｊ Ｃ７または非作動時デルプルメモリＣ８から
第２のスイッチＣＪＯを介して入力し、これを出力パル
スのパルス幅に変換しで出力するタイマである。and the integral correction value, that is, the corrected basic fuel amount Gfo'
is multiplied by the learning control correction value which is the output of the average value calculation unit C5, that is, the injection fuel 01 is sent from the working time double memo+j C7 or the non-working working time del pull memory C8 through the second switch CJO. This is a timer that inputs the pulse width, converts it to the pulse width of the output pulse, and outputs the pulse width.
Ｃ１３は駆動回路で、排気ガス還流装置８の作動時はタ
イマＣ１２から出力される作動時パルスＰＪ＞を、非作
動時は非作動時パルス■）Ｎを入力し、上記イグニショ
ンコイル１２から出力されたイグニション信号１２ａを
トリガとして、燃泊［噴射弁１、４ ｆｒ：駆動するよ
うに作動時パルスＰＦ、または非作動時パルスＰＮの１
１１カモードに応じて開弁パルスｉ ３ ｂを出力する
ｊ：うに構成されている。C13 is a drive circuit, which inputs the operating pulse PJ> output from the timer C12 when the exhaust gas recirculation device 8 is operating, and the non-operating pulse ■)N when it is not operating, and outputs the output from the ignition coil 12. The ignition signal 12a is used as a trigger to activate the fuel injection valves 1, 4 fr: 1 of the pulse PF when activated or the pulse PN when not activated.
The valve opening pulse i 3 b is output according to the 11 modes.
なお、Ｃ１ｌは学習値更新演算部であや、］１１気ガス
還流装置８の非作動時において、非作動時テーブルメモ
リＣ８が更新されない領域のメモリ値をその周辺の更新
されたメモリ値で補間して更新させるものである。Note that C1l is a learning value update calculation unit that interpolates the memory values in the area where the table memory C8 is not updated when the air gas recirculation device 8 is not in operation, with the updated memory values in the vicinity thereof. This will update the information.
次に、以上のように構成さ′ｉ７．たこの発明の内燃機
関燃料噴射装置ハ１の動作について説明する。Next, 'i7. The operation of the internal combustion engine fuel injection device C1 of this invention will be explained.
寸ず、回Ｉ Ｍｉ７ｉする内燃機関において、イグニシ
ョンコイル１２からＣ４力されたイグニション信号１２
ａを入力した回転数演ｐ： ％Ｂ ｃ １はその周期の
逆数を演算して回転数を、Ｆ； Ｇ １？、判定部Ｃ２
および基本燃料量演算？’４（Ｉ Ｃ３Ｋ送出する。In an internal combustion engine that is running a number of times, the ignition signal 12 that receives C4 from the ignition coil 12
Rotation speed operation p with input a: %B c 1 calculates the rotation speed by calculating the reciprocal of the period, F; G 1? , determination unit C2
and basic fuel quantity calculation? '4 (Send I C3K.
一方、半導体負圧センサ５で検知された吸気管２内の負
圧の大きさを知らせる負圧信号５ａが基本燃料量演η１
部Ｃ３に入力されると、この基本燃料量演算部Ｃ３は回
転数とで（負圧、回転数）１（応じて予め定められた基
本燃料量Ｇｆｏを算出し、その値Ｇｆｏを乗ｑ−器Ｃ６
に出力する。On the other hand, the negative pressure signal 5a that indicates the magnitude of the negative pressure in the intake pipe 2 detected by the semiconductor negative pressure sensor 5 is the basic fuel quantity calculation η1.
When the input is input to section C3, this basic fuel amount calculation section C3 calculates a predetermined basic fuel amount Gfo by the number of revolutions (negative pressure, number of revolutions) 1 (accordingly), and multiplies the value Gfo by q- Container C6
Output to.
また、ＥＧＲ判定部ｃ２は上記（負圧、回転数）で決め
られた１−負圧・回転数領域」が予め設定された排気ガ
ス還流制御領域内にあるがどうかを判定し、その判定結
果を第１および第２のスイッチＣ９＋ Ｃ１０Ｋ伝える
。。In addition, the EGR determination unit c2 determines whether the 1-negative pressure/rotational speed region determined by the above (negative pressure, rotational speed) is within the preset exhaust gas recirculation control region, and the determination result is is transmitted to the first and second switches C9+C10K. .
ところで、排気管６内ガスの０２を検知した０、センサ
７からはリッチ信号あるいはリーンイ占号７ａが出力さ
れ、このリッチ信号せたはリーン信号７ａを入力した積
分補正部Ｃ４は積分制御の操作量と（−での積分補正値
を平均値演算ｆ＋Ｉｉ Ｃ５および乗釣器Ｃ６に送出す
る、。By the way, when 02 of the gas in the exhaust pipe 6 is detected, the sensor 7 outputs a rich signal or lean signal 7a, and the integral correction section C4 inputting this rich signal or lean signal 7a performs an integral control operation. The integral correction value at (-) is sent to the average value calculation f+Ii C5 and the fishing device C6.
そこで１．この平均値演算部ｃ５け積分補正値の平均値
、すなわち学習制御補正値を出力し、Ｊイ：Ｃ”、Ｉｔ
判定部Ｃ２ば、上記「負圧・回９・・′−、数領域」が
予め設定さ１また排気ガス譚流制仰領域内にあると判定
すると、第１のスイッチｃ９で作動時接点Ｓ１ａを閉成
するため、この学習制御補正値を作動時テーブルメモリ
Ｃ７に送出する。So 1. This average value calculation unit outputs the average value of the 5 integral correction values, that is, the learning control correction value,
If the determination unit C2 determines that the above-mentioned "negative pressure/times 9...'-, number range" is within the preset 1 and exhaust gas flow suppression range, the first switch c9 activates the contact S1a. In order to close the learning control correction value, this learning control correction value is sent to the table memory C7 during operation.
このとき、第２のスイッチＣＩＯも上記Ｊｒ Ｇ Ｒ−
′１４Ｉ定部Ｃ２の判定によ夕作動時接点ＳＺＲを閉成
する。At this time, the second switch CIO also
'14I Closes the contact SZR when activated according to the judgment of the constant part C2.
一方、乗算器Ｃ６では、基本燃相針Ｇｆｏおよび積分補
正値を入力してこの基本燃料量Ｇ４ｏＫ積分補正を行な
い、その演算結果を補正基本炉料量Ｇｆｏ’として作動
時テーブルメモＩＪ Ｃ７および非作動時・チーグルメ
モリＣ８に送出する。On the other hand, the multiplier C6 inputs the basic fuel phase needle Gfo and the integral correction value, performs the basic fuel quantity G4oK integral correction, and uses the calculation result as the corrected basic reactor fuel quantity Gfo' for the operation table memo IJ C7 and the non-operation table memo IJ C7. Time/Send to Cheagle memory C8.
そこで、上記学習制御補正値を入力した作動時デープル
メモリＣ７は、さらに補正基本燃Ｐｉ 量Ｇ ｆｏ’に
対して学習制御補正を行ない、その演算結果を噴射燃料
量Ｇｆとして第２のスイッチＣ１０を介してタイマＣ１
２に送出する。Therefore, the operation double memory C7 into which the learning control correction value has been input further performs a learning control correction on the corrected basic fuel amount Pi', and uses the calculation result as the injected fuel amount Gf to the second switch C10. timer C1 via
Send to 2.
このタイマＣ］、 ２は噴射燃料量Ｇｆをパルス幅に変
換する。このとき、イグニションコイル１２からのイグ
ニション信号１２ａをトリがとしてタイマＣ１２が駆動
され、ノＪ１”気ガス還流装置８の作動時の作動パルス
ＰＥを駆動回路Ｃ１３に送出する。This timer C], 2 converts the injected fuel amount Gf into a pulse width. At this time, the timer C12 is driven by the ignition signal 12a from the ignition coil 12, and sends out an operating pulse PE for operating the gas recirculation device 8 to the drive circuit C13.
その結果、この駆動回路Ｃ１，３は上記作動パルスｐ＝
の化カモ−ドに応じて出力されたｕ：１弁パノ【ス１３
ｂで燃料噴射弁Ｊ４を駆動する。As a result, this drive circuit C1,3 has the above-mentioned actuation pulse p=
U:1 valve pano output according to the conversion mode
b drives the fuel injection valve J4.
次に、ＵＬ気ガス還流装首８の非作動時において、学習
値更新演錯１部Ｃ１ｌは非作動時デープルメモリＣ８の
前記理由にょＱ更新されない領域０）メ；（−９値を、
その周辺の更新さ）Ｌ／こメそり値で＃ｌｉｌ １ｆｔ
Ｊ （。Next, when the UL air gas recirculation neck device 8 is not activated, the learned value update complex 1 part C1l is the area 0) where Q is not updated for the above reason in the depleted memory C8 when not activated;
Update around it) L/Komesori value #lil 1ft
J (.
て更新させる（詳細動作は後述する）３、その他の各（
・ｈ酸部は上述の作ｐｉＩＪＩ１．Ｊ′とｌｉ’ｉＪイ
パ（に励信し、上ＮＱ Ｅ Ｇ Ｒ同定部Ｃ２の判定に
よって、第」のスイッチＣ９および第２のスイッチＣ”
Ｉ （ｌはぞり、ぞれソト作動時接点Ｓｘｂ 、 Ｓ
２ｂを閉成する。(detailed operation will be described later) 3, and each other (
・The h acid part was prepared as described above in piIJI1. J' and li'iJ ipa(), and according to the judgment of the upper NQ E G R identification section C2, the ``th switch C9 and the second switch C''
I (l is removed, respectively, the contacts Sxb and S
2b is closed.
これによシ、イグニションコイノド１２がらのイグニシ
ョン信号１２ａでタイマＣ，１２が駆動され、排気ガス
還流装置８の非作動パルスＰ！４を駆動回路Ｃ１３に送
る。As a result, the timer C, 12 is driven by the ignition signal 12a from the ignition controller 12, and the deactivation pulse P! of the exhaust gas recirculation device 8 is driven! 4 to the drive circuit C13.
その結果、駆動回路Ｃ］、 ３は非作動パルスＰＮの出
力モードに応じて出方された開弁パルス１３ｂで燃料噴
射弁１４を駆動する。したがって４Ｊ１：気ガス還流装
屑の作動・非作動に応じてともに学習補正がなされる。As a result, the drive circuit C], 3 drives the fuel injection valve 14 with the valve opening pulse 13b issued in accordance with the output mode of the non-actuation pulse PN. Therefore, 4J1: Learning correction is performed in response to whether the air gas recirculation equipment is activated or not.
次に、前述の学習値更新前３Ｈｉ部Ｃ１，１の動作を第
３図、第４図を用いて説明する３、第３図において、横
軸Ｎは回転数、縦ｔｌｌ＋ Ｐ ｓは軸馬力、Ｐｉ（ｉ
−１〜４）は等ブースト曲紳、Ａ、！−Ａ、２〜Ａ３−
Ａ４、−Ａ２−Ａ５−Ａ、６−Ａ３などの領域はＪＪ１
気ガス還流装置８の非作動時の学課領域、曲線り内は排
気ガス還流装置８の作動可能領域をそれぞれ示す。Next, the operation of the 3Hi section C1, 1 before learning value update described above will be explained using FIGS. 3 and 4. In FIG. , Pi(i
-1 to 4) are equal boost songs, A,! -A, 2~A3-
Areas such as A4, -A2-A5-A, 6-A3 are JJ1
The school area when the exhaust gas recirculation device 8 is not in operation is shown, and the area inside the curve shows the operable area of the exhaust gas recirculation device 8, respectively.
いま、学習領域Ａ２−Ａ３．−Ａ６−Ａ３について、図
の斜テ、液部では、通常学・ご７できない。なぜなら、
斜線部（・・ま学習ｆｉｔ：Ｉ御が可能な冷却水温の高
い状態では、排気ガス還流装置８が作動するため、学習
値は排気ガス還流装置８の作動時の補正値となシ、４Ｖ
＋、気ガス遠流装置８の非作動時の余１線部は学習制御
されないことになる。Now, learning areas A2-A3. - Regarding A6-A3, the diagonal angle of the diagram and the liquid part cannot be viewed normally. because,
The shaded area (...) Learning fit: In a state where the cooling water temperature is high and can be controlled, the exhaust gas recirculation device 8 operates, so the learned value is a correction value when the exhaust gas recirculation device 8 is activated.
+: When the air gas remote flow device 8 is not operating, the extra line portion is not subjected to learning control.
したがって、冷却水ＶＩＡが低いときに斜線部は学１１
補正されないことになり、空燃比のきめ細かい制御は望
めない。Therefore, when the cooling water VIA is low, the shaded area is
Since no correction is made, fine control of the air-fuel ratio cannot be expected.
そこで、学習値更新演算部Ｃ１ｌでは、冷却水温が高く
学習制御可能なときにＡ２−Ａ５−Ａ６−Ａ３内で斜線
部外のたとえば、Ｅ１点で学習制御し、冷却水温が低い
ときの上記斜線部内のたとえば、Ｅ２点での動作時にも
学習補正値を適用するよう制御を行なう。Therefore, in the learning value update calculation unit C1l, when the cooling water temperature is high and learning control is possible, learning control is performed at a point outside the shaded area within A2-A5-A6-A3, for example, E1 point, and when the cooling water temperature is low, For example, control is performed to apply the learning correction value even when operating at point E2 within the section.
また、第４図に示すように学習領域を細分化した場合、
図の領域Ｂ ２− Ｂ ３−８７−１３ にのように排
気力゛スＲ流装置動作可能領域（同図曲Ｈ６： ｒ、
＋ｊｑ ）と学習領域の区分とが完全にニア＋ｉ々る鴨
合が存在するが、領域Ｂ １− Ｂ ２ Ｂ ６− Ｈ
５と領１或１＋ ３− Ｂ ４−Ｂ８−Ｂ７のそり、ぞ
れの学習補正値で補間ないしは平均することにより、領
域Ｂ ２− Ｂ３− Ｂ ７−Ｂ６の学習補正値をめる
よう制御する。Furthermore, when the learning area is subdivided as shown in Figure 4,
As shown in the area B2-B3-87-13 in the figure, the exhaust force R flow device is operable area (song H6 in the same figure: r,
+jq) and the division of the learning area are completely close to each other, but the area B 1- B 2 B 6- H
5 and region 1 or 1+ 3- B 4-B8-B7, control is performed to obtain the learning correction value of region B 2- B3- B 7-B6 by interpolating or averaging with each learning correction value. do.
したがって、排気ガス還流装置８の作動・非作動に応じ
てともに学習制御補正が欧される。Therefore, the learning control correction is performed depending on whether the exhaust gas recirculation device 8 is activated or not.
なお、上記実施例では、その必要構成部をブロック図で
示したが、プログラムで行なってもよい。In the above embodiment, the necessary components are shown in block diagrams, but they may be implemented by programs.
また、上記実施例では、スピードデンシティ方式のもの
を示したが、マスフロ一方式であってもよく、新規の量
は変わらなくても不燃性の排気ガスの混流により燃焼状
態が異なるため、この発明による制御装置によりさらに
きめ細かい制御が可能である。In addition, although the speed density type was shown in the above embodiment, a mass flow type may also be used, and even if the amount of new gas does not change, the combustion state changes due to the mixed flow of non-flammable exhaust gas, so the present invention Even more fine-grained control is possible with the control device.
以上のように、この発明の内燃機関燃料噴射装置によれ
ば、排気ガス還流装置の作動・非作動に応じて独立に学
習制御補正手段を備え、この学習制御補正手段により補
正を行なう領域が上記排気ガス還流装渦１の作動する領
域を含むよう設定し、排気ガス還ｖ１ｔ’、装置の作動
すべき運転領域で冷却水温条件などで損気ガス還流装置
が作動しないときの学習補正を排気ガス還流装置が作動
し左い運転領域の学習補正飴を用いて補正することによ
り、囲気ガス還流装置の作動・非作動的ともに機関空燃
比を）ツｆ望の値に精度よ＜ ｊｕｌ］御できるという
大々る効果がある。As described above, according to the internal combustion engine fuel injection device of the present invention, the learning control correction means is provided independently depending on whether the exhaust gas recirculation device is activated or deactivated, and the area to be corrected by the learning control correction means is as described above. The exhaust gas recirculation system is set to include the region where the exhaust gas recirculation system vortex 1 operates, and the learning correction is performed when the exhaust gas recirculation system does not operate due to cooling water temperature conditions etc. in the operating range where the exhaust gas recirculation system should operate. It is said that by correcting using the learning correction candy for the operating range in which the device is activated, it is possible to precisely control the engine air-fuel ratio to the desired value both when the ambient gas recirculation device is activated and when it is not activated. It has a huge effect.
第１図はこの発明の内燃機関燃料噴射装置の一実施例の
概略構成を示す図、第２図は第１図の内燃機関燃料噴射
装置における制御装置のブロック説明図、第３図および
第４図はそれぞれ第２図の制御装置における学習値更新
演算部Ｃ１ｌの動作を説明するための説明図である。
２・・・吸気管、３ ・シリンダ、４・・・絞シ弁、５
・・半導体負圧センザ、６・・・４Ｊト気管、７・・・
ｏ２センザ、８・・・損気カスＲｔｌＬ装置、１２ ・
イグニションコイル、１３・・・制御装置、Ｃ２・■号
ｃ ｎ判定部、Ｃ３・・・基本燃料量演算部、Ｃ４禎分
補ｉモ部、Ｃ５・・・平均値演算部、Ｃ６・・・乗算器
、Ｃ７・・作動時チーへプルメモリ、Ｃ８・非作動時テ
ーブルメモリ、Ｃ９、ＣＩＯ・・・スイッチ、Ｃ１ｌ・
・愕習イ１百更新演ｑ一部、Ｃ１２・・・駆動回路。
なお、図中同−省号は同−へ１１分ま７′こけ相当部分
を示す。
代理人 犬 岩 Ｊｖ／ 雄
千 イ、ノ、袖 正 書 （自発）
昭和 ５馬已哨η１ 口
１”１１！’ｌ’ｌ ’Ｉ艮官１ｐ、、ｊ＞１ 、１Ｇ
ｆ’ｌノ／ｊ 小１１１Ｑｆｉ昭５８−１１３７７９
号２ 発明の名称
内燃機関燃料噴射装置
：３． ｔｌｉｌｌ ろ−＝＋ る省
５、補正の対象
明細書の発明の詳細な説明の欄。
６ 補正の内容
明細書１３頁１１行１通常学習できない」を「排気ガス
還流装置８の非作動時の学習ができない」と訂正する。
以上FIG. 1 is a diagram showing a schematic configuration of an embodiment of an internal combustion engine fuel injection system of the present invention, FIG. 2 is a block diagram illustrating a control device in the internal combustion engine fuel injection system of FIG. 1, and FIGS. Each figure is an explanatory diagram for explaining the operation of the learning value update calculation section C1l in the control device of FIG. 2. 2... Intake pipe, 3 - Cylinder, 4... Throttle valve, 5
・・Semiconductor negative pressure sensor, 6...4J trachea, 7...
o2 sensor, 8... Loss gas RtlL device, 12 ・
Ignition coil, 13...control device, C2/■c n determination section, C3...basic fuel amount calculation section, C4 supplementary i-mo section, C5...average value calculation section, C6... Multiplier, C7...Pull memory when activated, C8/table memory when not activated, C9, CIO...switch, C1l...
・C12...Drive circuit. In addition, the ministry name in the figure indicates the part corresponding to 11 minutes to 7'. Agent Inu Iwa Jv/ Yuchi I, no, Sode Masashi (self-motivated) Showa 5 Umami Sho η1 Mouth 1"11!'l'l 'I Rinkan 1p,, j>1, 1G
f'lノ/j Elementary School 111 Qfi 1979-113779
No. 2 Name of the invention Internal combustion engine fuel injection device: 3. Section 5: Detailed description of the invention in the specification to be amended. 6. In the detailed description of the amendment, page 13, line 11, line 1, ``Normal learning is not possible'' is corrected to ``Learning is not possible when the exhaust gas recirculation device 8 is not in operation.''that's all
Claims (1)
各種作動パラ７ タに基づいて予めプログラムされた制
御内容にしたがって上記燃料噴射弁の開弁時間を制御す
るｆ＆！Ｉ御装置表装置気ガス中の酸素濃度を検出する
０２センサと、排気ガス還流装置とを備えた内燃機関噴
射装置において、上記０２センザの検出量による秋分制
御を行々い、機関の各運転状態に応じた前記積分動作に
よって得られた積分補正値の平均値を記憶しておき、こ
の値を」こ記＃１．気力゛ス還流装置の作動時と非作動
時で独立に補ｉＥを行なうことを特徴とする内燃機関燃
料噴射装置。 （２）補正値の上記排気ガス還流装置の作動時に対応す
る補正領域および非作動時に対応する補正領域が上記排
気ガス還流装置の作動領域を含むように設定することを
特徴とする特許請求の範囲第１項記載の内燃機関撚＃＋
噴射装置。 （３）非作動時に対応する補正領域内で排気ガス還流装
置の作動領域の前記補正を非作動時に対応する補正領域
内のＨｒ気ガス還流装置の非作動領域の前記補正値に基
づき空燃比補正をおこなうことを特徴とする特許請求の
範囲第２項記載の内燃機関燃料噴射装置。[Claims] (],) The opening time of the fuel injector is controlled in accordance with control contents programmed in advance based on the fuel injector and various operating parameters including the intake air amount and temperature of the engine. Do f&! In an internal combustion engine injection system equipped with an 02 sensor that detects the oxygen concentration in gas and an exhaust gas recirculation device, equinox control is performed based on the amount detected by the 02 sensor, and each engine operation is The average value of the integral correction values obtained by the above-mentioned integral operation according to the state is memorized, and this value is used in this article #1. A fuel injection system for an internal combustion engine, characterized in that supplementary iE is performed independently when an air gas recirculation device is activated and when it is not activated. (2) The scope of the present invention is characterized in that a correction area of the correction value corresponding to when the exhaust gas recirculation device is activated and a correction area corresponding to the non-activation of the exhaust gas recirculation device are set to include the activation area of the exhaust gas recirculation device. Internal combustion engine twist #+ as described in item 1
Injection device. (3) The air-fuel ratio is corrected based on the correction value of the non-operating region of the exhaust gas recirculation device within the correction region corresponding to the non-operating time. The internal combustion engine fuel injection device according to claim 2, characterized in that the internal combustion engine fuel injection device performs the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58113779A JPS606045A (en) | 1983-06-24 | 1983-06-24 | Fuel injecting device of internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58113779A JPS606045A (en) | 1983-06-24 | 1983-06-24 | Fuel injecting device of internal-combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS606045A true JPS606045A (en) | 1985-01-12 |
| JPS6340924B2 JPS6340924B2 (en) | 1988-08-15 |
Family
ID=14620895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58113779A Granted JPS606045A (en) | 1983-06-24 | 1983-06-24 | Fuel injecting device of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS606045A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791304A (en) * | 1993-09-22 | 1995-04-04 | Nissan Motor Co Ltd | Fuel supply controller of internal combustion engine |
| US6025445A (en) * | 1996-11-01 | 2000-02-15 | Kaneka Corporation | Curable compound |
-
1983
- 1983-06-24 JP JP58113779A patent/JPS606045A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791304A (en) * | 1993-09-22 | 1995-04-04 | Nissan Motor Co Ltd | Fuel supply controller of internal combustion engine |
| US6025445A (en) * | 1996-11-01 | 2000-02-15 | Kaneka Corporation | Curable compound |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6340924B2 (en) | 1988-08-15 |
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