JPH0328578B2 - - Google Patents
Info
- Publication number
- JPH0328578B2 JPH0328578B2 JP58085858A JP8585883A JPH0328578B2 JP H0328578 B2 JPH0328578 B2 JP H0328578B2 JP 58085858 A JP58085858 A JP 58085858A JP 8585883 A JP8585883 A JP 8585883A JP H0328578 B2 JPH0328578 B2 JP H0328578B2
- Authority
- JP
- Japan
- Prior art keywords
- correction amount
- ram
- learning
- flop
- flip
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 14
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
-
- 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
- F02D41/2487—Methods for rewriting
- F02D41/2493—Resetting of data to a predefined set of values
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】
<技術分野>
本発明は自動車用内燃機関の学習制御装置にお
けるメモリーバツクアツプ監視装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a memory backup monitoring device in a learning control device for an internal combustion engine for an automobile.
<背景技術>
フイードバツク制御系における学習制御装置
は、目標値に対応させて予め定めた基本制御量
と、目標値と実際値とを比較し比例積分制御に基
づいて定めたフイードバツク補正量と、RAMに
記憶された学習補正量とから、制御量を設定する
制御量設定手段と、フイードバツク補正量と学習
補正量とから新たな学習補正量を設定してRAM
内の学習補正量のデータを更新する学習補正量更
新手段とを備えてなる。<Background Art> A learning control device in a feedback control system uses a basic control amount predetermined in correspondence with a target value, a feedback correction amount determined based on proportional-integral control by comparing the target value and the actual value, and a RAM. control amount setting means for setting a control amount from the learning correction amount stored in the RAM; and a control amount setting means for setting a control amount from the learning correction amount stored in the RAM.
learning correction amount updating means for updating learning correction amount data within the learning correction amount.
具体的に自動車用内燃機関では、第1図に示す
如き燃料噴射弁1を用いた空燃比の学習制御装置
や、アイドル制御弁2を用いたアイドル回転数の
学習制御装置が考えられている。 Specifically, for automobile internal combustion engines, an air-fuel ratio learning control device using a fuel injection valve 1 as shown in FIG. 1 and an idle speed learning control device using an idle control valve 2 have been considered.
尚、第1図の燃料噴射弁1はいわゆるSPI方式
のものでスロツトル弁3の上流に設けられ、これ
に与えられるパルス信号のデユーテイ比に応じて
開弁時間割合(すなわち燃料噴射量)が決定され
る。4は燃料噴射量の制御のために用いられる吸
入空気流量測定用の熱線式エアフローメータであ
る。また、第1図のアイドル制御弁2はロータリ
ー式で、スロツトル弁3をバイパスする補助空気
通路5に介装され、これに与えられるパルス信号
のデユーテイ比に応じて開度(すなわち補助空気
量)が決定される。 The fuel injection valve 1 shown in Fig. 1 is of the so-called SPI type and is installed upstream of the throttle valve 3, and the valve opening time ratio (that is, the fuel injection amount) is determined according to the duty ratio of the pulse signal given to it. be done. Reference numeral 4 denotes a hot wire air flow meter for measuring the intake air flow rate, which is used to control the fuel injection amount. The idle control valve 2 shown in FIG. 1 is of a rotary type, and is installed in an auxiliary air passage 5 that bypasses the throttle valve 3, and the opening degree (that is, the amount of auxiliary air) is adjusted according to the duty ratio of the pulse signal given to the idle control valve 2. is determined.
空燃比の学習制御装置は、第2図に示すよう
に、吸入空気流量Qとエンジン回転数Nとから基
本噴射量Tp(=K×Q/N、Kは定数)を演算す
る基本噴射量演算手段と、目標空燃比(理論空燃
比)と排気系に設けたO2センサからの信号に基
づいて検出される実際の空燃比とを比較して比例
積分制御によりフイードバツク補正係数αを設定
するフイードバツク補正係数設定手段と、エンジ
ン回転数N及び基本噴射量(負荷)Tp等のエン
ジン運転条件からこれに対応させてRAMに記憶
させた学習補正係数α0(初期値1)を検索する学
習補正係数検索手段と、フイードバツク補正係数
αと学習補正係数α0との重みづけ平均(例えば加
重平均、次式(1)参照、Mは定数)をとつてその値
を新たな学習補正係数α0としてRAM内の同一エ
ンジン運転条件の学習補正係数α0のデータを更新
する学習補正係数更新手段と、基本噴射量Tpに
フイードバツク補正係数αと学習補正係数α0とを
乗算して噴射量Ti(次式(2)参照)を演算する噴射
量演算手段と、この演算された噴射量Tiに相応
するデユーテイ比のパルス信号を燃料噴射弁に出
力するパルス信号出力手段とを備えてなる。 As shown in Fig. 2, the air-fuel ratio learning control device calculates the basic injection amount Tp (=K×Q/N, K is a constant) from the intake air flow rate Q and the engine speed N. and a target air-fuel ratio (theoretical air-fuel ratio) and an actual air-fuel ratio detected based on a signal from an O 2 sensor installed in the exhaust system, and set a feedback correction coefficient α using proportional-integral control. A correction coefficient setting means and a learning correction coefficient that searches for a learning correction coefficient α 0 (initial value 1) stored in the RAM corresponding to engine operating conditions such as engine speed N and basic injection amount (load) Tp. A search means takes a weighted average (for example, a weighted average, see the following equation (1), M is a constant) of the feedback correction coefficient α and the learning correction coefficient α 0 , and stores that value as a new learning correction coefficient α 0 in the RAM. learning correction coefficient updating means for updating the data of the learning correction coefficient α 0 under the same engine operating conditions; and the injection quantity Ti (the following formula (2)); and a pulse signal output means that outputs a pulse signal with a duty ratio corresponding to the calculated injection amount Ti to the fuel injection valve.
α0←(α+(M−1)×α0)/M…… (1)
Ti=Tp×α×α0…… (2)
アイドル回転数の学習制御装置は、第3図に示
すように、水温Twに基づいてパルス信号のデユ
ーテイ比の基本制御値ISWtwを設定する基本制
御値設定手段と、水温Twに基づいて目標回転数
Nsを設定する目標回転数設定手段と、目標回転
数Nsと実際の回転数Nとを比較して比較積分制
御によりフイードバツク補正分ISCfbを設定する
フイードバツク補正分設定手段と、実際の回転数
Nからこれに対応させてRAMに記憶させた学習
補正分ISCle(初期値0)を検索する学習補正分検
索手段と、フイードバツク補正分ISCfbと学習補
正分ISCleとの重みづけ平均(例えば加重平均、
次式(3)参照)をとつてその値を新たな学習補正分
ISCleとしてRAM内の同一回転数Nの学習補正
分ISCleのデータを更新する学習補正分更新手段
と、基本制御値ISCtwにフイードバツク補正分
ISCfbと学習補正分ISCleとを加算してパルス信
号のデユーテイ比の制御値ISCdy(次式(4)参照)
を演算する制御値演算手段と、この演算された制
御値に基づくデユーテイ比のパルス信号をアイド
ル制御弁に出力するパルス信号出力手段とを備え
てなる。 α 0 ←(α+(M−1)×α 0 )/M…… (1) Ti=Tp×α×α 0 …… (2) The idle speed learning control device is as shown in Figure 3. , basic control value setting means for setting the basic control value ISWtw of the duty ratio of the pulse signal based on the water temperature Tw;
A target rotation speed setting means for setting the target rotation speed Ns, a feedback correction amount setting means for comparing the target rotation speed Ns and the actual rotation speed N and setting a feedback correction amount ISCfb by comparison-integral control, and Correspondingly, a learning correction amount search means for searching the learning correction amount ISCle (initial value 0) stored in the RAM, and a weighted average (for example, a weighted average) of the feedback correction amount ISCfb and the learning correction amount ISCle,
(see the following equation (3)) and use that value as the new learning correction amount.
Learning correction update means for updating the data of ISCle by the learning correction amount of the same rotation speed N in RAM as ISCle, and feedback correction amount to the basic control value ISCtw.
The control value ISCdy of the duty ratio of the pulse signal is obtained by adding ISCfb and the learning correction amount ISCle (see the following formula (4))
and a pulse signal output means for outputting a pulse signal of a duty ratio based on the calculated control value to the idle control valve.
ISCle←(ISCfb+(M−1)
×ISCle)/M…… (3)
ISCdy=ISCtw+ISCfb
+ISCle…… (4)
ところで、このような自動車用内燃機関の学習
制御装置において、学習結果をRAMに記憶させ
ておく場合、エンジンキースイツチがオフになつ
た時には、エンジンキースイツチを介することな
くRAMに電源を供給することにより、RAMを
バツクアツプして内容が消えないようにするが、
キーオフ中にバツテリを外すことによりRAMの
内容がこわれた場合、次回のエンジンキースイツ
チの投入時には不定のRAMの内容をベースに学
習するため不都合が生じる。 ISCle←(ISCfb+(M-1) ×ISCle)/M... (3) ISCdy=ISCtw+ISCfb +ISCle... (4) By the way, in such a learning control device for an automobile internal combustion engine, learning results are stored in RAM. In this case, when the engine key switch is turned off, power is supplied to the RAM without going through the engine key switch, so that the RAM is backed up and its contents are not erased.
If the contents of the RAM are damaged by removing the battery while the key is off, the next time the engine key switch is turned on, the learning will be based on the undefined contents of the RAM, causing an inconvenience.
尚、特開昭57−102529号公報に、予めRAMの
特定番地に決められたパターンの定数を入れてお
き、プログラムが起動した時にこの定数の値が壊
れているか否かつまり誤つた値であるか否かを判
別し、誤つた値であるならバツテリが外されたも
のとして、RAM内容の初期化を行うことが開示
されているが、バツテリ外しを直接検出するもの
ではないので、たまたまRAM内容の破壊が特定
番地以外の一部であつたときには、異常検出でき
ないなど、安全性の面で問題があつた。 In addition, according to Japanese Patent Application Laid-Open No. 57-102529, a constant with a predetermined pattern is stored in a specific address of RAM in advance, and when the program is started, it is checked whether the value of this constant is corrupted or not, that is, it is an incorrect value. It is disclosed that if the value is incorrect, it is assumed that the battery has been removed, and the RAM contents are initialized, but since the battery removal is not directly detected, the RAM contents When the destruction occurred in a part other than a specific address, there were problems in terms of safety, such as failure to be detected.
<発明の目的>
本発明は叙上の実状に鑑み、キーオフ中にバツ
テリが外されたりしてRAMへの電源が遮断され
RAMの内容がこわれた場合に、エンジンキース
イツチの再投入時にこれを検知して対処できるよ
うにすることを目的とする。<Purpose of the Invention> In view of the above-mentioned actual situation, the present invention is designed to prevent power to the RAM from being cut off due to the battery being removed during key-off.
The purpose is to be able to detect and take action when the engine key switch is turned on again if the contents of RAM are corrupted.
<発明の構成>
このため、本発明は、第4図に示すように、学
習制御用のRAMの電源端子への入力の消失後の
再入力によつて反転(例えばリセツト)されるフ
リツプフロツプと、エンジンキースイツチの投入
時にフリツプフロツプの出力を判定する判定手段
と、その判定結果に基づきフリツプフロツプが前
記再入力によつて反転されている時にRAM内の
学習補正量のデータを初期値に戻すと共にフリツ
プフロツプを再反転(例えばリセツト)する初期
化手段とを設けて構成したものである。<Structure of the Invention> Therefore, as shown in FIG. 4, the present invention includes a flip-flop that is inverted (for example, reset) by re-input after the input to the power supply terminal of the RAM for learning control disappears; Judgment means for judging the output of the flip-flop when the engine key switch is turned on; and based on the judgment result, when the flip-flop is inverted by the re-input, the learning correction amount data in the RAM is returned to the initial value, and the flip-flop is This configuration includes initialization means for re-inverting (for example, resetting).
<実施例> 以下に実施例を説明する。<Example> Examples will be described below.
第5図において、11はCPU、12はROMで
あり、これらにはバツテリ13からエンジンキー
スイツチ14を介し更に安定化レギユレータ15
を介して電源が供給される。 In FIG. 5, 11 is a CPU, 12 is a ROM, and these are further connected to a stabilizing regulator 15 via a battery 13 and an engine key switch 14.
Power is supplied via.
16は学習制御用のRAMであり、エンジンキ
ースイツチ14がオンの時には、安定化レギユレ
ータ15からダイオード17を介して電源が供給
される。また、エンジンキースイツチ14がオフ
の時には、抵抗18とツエナーダイオード19と
よりなるバツクアツプ電源回路から電源が供給さ
れる。 Reference numeral 16 denotes a RAM for learning control, to which power is supplied from the stabilizing regulator 15 via the diode 17 when the engine key switch 14 is on. Further, when the engine key switch 14 is off, power is supplied from a backup power supply circuit consisting of a resistor 18 and a Zener diode 19.
20はフリツプフロツプであり、そのリセツト
(R)端子をRAM16を電源端子に接続してあ
る。そして、フリツプフロツプ20の出力(Q)
端子をCPU11のポートAに接続してある。そ
してまた、CPU11のポートBをフリツプフロ
ツプ20のセツト(S)端子に接続してある。 20 is a flip-flop whose reset (R) terminal is connected to the power supply terminal of the RAM 16. And the output (Q) of flip-flop 20
The terminal is connected to port A of CPU11. Furthermore, port B of the CPU 11 is connected to the set (S) terminal of the flip-flop 20.
ここにおいて、CPU11は、第6図に示すフ
ローチヤート(エンジンキースイツチ14の投入
時に起動されるメモリーバツクアツプ監視ルーチ
ン)に基づくプログラム(ROM12に記憶され
ている)に従つて、エンジンキースイツチ14の
投入時にそれまでメモリーのバツクアツプが正し
く行われていたか否かを判定し、行われていない
場合に相応の処理を行うようになつている。 Here, the CPU 11 operates the engine key switch 14 according to a program (stored in the ROM 12) based on the flowchart shown in FIG. 6 (memory backup monitoring routine started when the engine key switch 14 is turned on). When it is turned on, it is determined whether or not memory backup has been performed correctly up to that point, and if it has not been performed, appropriate processing is performed.
次に第6図のフローチヤートについて説明す
る。 Next, the flowchart shown in FIG. 6 will be explained.
S1でCPU11のポートAの入力(すなわち
フリツプフロツプ20の出力)が1か0かを判定
する。1の場合は、正常と判定し、このルーチン
を終了させる。0の場合は、異常と判定し、次の
S2へ進む。 In S1, it is determined whether the input to port A of the CPU 11 (ie, the output of the flip-flop 20) is 1 or 0. If it is 1, it is determined to be normal and this routine is ended. If it is 0, it is determined that there is an abnormality and the process proceeds to the next step S2.
S2でRAM16内の学習結果を全て初期値に
戻す。空燃比の学習制御装置の場合は、学習補正
係数α0のデータを全て1にする。アイドル回転数
の学習制御装置の場合は、学習補正分ISCleのデ
ータを全て0にする。次にS3へ進む。 In S2, all learning results in the RAM 16 are returned to their initial values. In the case of an air-fuel ratio learning control device, all data of the learning correction coefficient α 0 is set to 1. In the case of an idle rotation speed learning control device, set all learning correction ISCl data to 0. Next, proceed to S3.
S3でCPU11のポートBから1の出力を発
し、フリツプフロツプ20を再びセツトし、その
出力を1に戻す。 At S3, an output of 1 is issued from port B of the CPU 11, the flip-flop 20 is set again, and the output is returned to 1.
従つて、エンジンキースイツチ14がオフにな
つている間にバツテリ13を外してRAM16へ
の通電が断たれた場合(第7図参照)は、フリツ
プフロツプ20のR端子への入力が消失し、再び
バツテリ13を接続したときにフリツプフロツプ
20のR端子への入力が1となる。そしてこのと
きにフリツプフロツプ20がリセツトされ、その
出力が0となる。 Therefore, if the power to the RAM 16 is cut off by removing the battery 13 while the engine key switch 14 is off (see Figure 7), the input to the R terminal of the flip-flop 20 will disappear and the power will be turned off again. When the battery 13 is connected, the input to the R terminal of the flip-flop 20 becomes 1. At this time, the flip-flop 20 is reset and its output becomes 0.
その後、エンジンキースイツチ14がオンとな
つて、第6図のフローチヤートに示したルーチン
が実行されると、ポートAの入力(すなわちフリ
ツプフロツプ20の出力)は0となつているの
で、メモリーが破壊されたことが検知される。こ
の場合は、RAM16内の学習結果を全て初期値
に戻し、初めから学習を行うようにすると共に、
ポートBの出力を1にして、フリツプフロツプ2
0のS端子へ送ることにより、フリツプフロツプ
20をセツトし、その出力を1に戻す。 Thereafter, when the engine key switch 14 is turned on and the routine shown in the flowchart of FIG. detected. In this case, return all learning results in RAM 16 to their initial values and start learning from the beginning.
Set the output of port B to 1 and flip-flop 2
0 to the S terminal sets flip-flop 20 and returns its output to 1.
また、エンジンキースイツチ14がオフになつ
ている間にバツテリ13が外されなければ、エン
ジンキースイツチ14がオンとなつた場合に、ポ
ートAの入力(すなわちフリツプフロツプ20の
出力)は1となつているので、この場合はメモリ
ーは正常にバツクアツプされていたと判断され、
RAM16内の学習結果をそのまま使用するよう
にするのである。 Furthermore, if the battery 13 is not removed while the engine key switch 14 is turned off, the input to port A (that is, the output of the flip-flop 20) will become 1 when the engine key switch 14 is turned on. Therefore, in this case, it is determined that the memory was backed up normally.
The learning results in the RAM 16 are used as they are.
<発明の効果>
以上説明したように本発明によれば、学習制御
用のRAMのバツクアツプ中に電源が切れた場合
に、エンジンキースイツチの投入時にこのことを
検知して学習結果を初期値に戻し、再び初めから
学習を行わせるようにしたため、不定のRAM内
容をベースに学習制御を行うことにより誤まつた
制御がなされるのを未然に防止することができる
という効果が得られ、学習制御の信頼性が向上す
る。<Effects of the Invention> As explained above, according to the present invention, if the power is cut off while backing up RAM for learning control, this is detected when the engine key switch is turned on and the learning result is set to the initial value. Since the learning is performed again from the beginning, it is possible to prevent erroneous control from being performed by performing learning control based on the undefined RAM contents. reliability is improved.
特に、フリツプフロツプを用いて、バツテリ外
しを直接検出するものであるため、安全性の面で
極めて優れるものである。 In particular, since it uses a flip-flop to directly detect battery removal, it is extremely safe in terms of safety.
第1図は燃料噴射弁及びアイドル制御弁の装着
例を示す内燃機関のスロツトルチヤンバの断面
図、第2図は空燃比の学習制御装置の構成を示す
ブロツク図、第3図はアイドル回転数の学習制御
装置の構成を示すブロツク図、第4図は本発明の
構成を示すブロツク図、第5図は本発明の一実施
例を示す回路図、第6図は同上のフローチヤー
ト、第7図は同上のタイミングチヤートである。
1……燃料噴射弁、2……アイドル制御弁、1
1……CPU、12……ROM、13……バツテ
リ、14……エンジンキースイツチ、15……安
定化レギユレータ、16……学習制御用の
RAM、20……フリツプフロツプ。
Fig. 1 is a sectional view of a throttle chamber of an internal combustion engine showing an example of mounting a fuel injection valve and an idle control valve, Fig. 2 is a block diagram showing the configuration of an air-fuel ratio learning control device, and Fig. 3 is an idle rotation FIG. 4 is a block diagram showing the configuration of the numerical learning control device, FIG. 5 is a circuit diagram showing an embodiment of the present invention, FIG. 6 is a flowchart of the same, and FIG. Figure 7 is the same timing chart as above. 1...Fuel injection valve, 2...Idle control valve, 1
1...CPU, 12...ROM, 13...Battery, 14...Engine key switch, 15...Stabilizing regulator, 16...Learning control
RAM, 20...Flip-flop.
Claims (1)
と、目標値と実際値とを比較し比例積分制御に基
づいて定めたフイードバツク補正量と、RAMに
記憶された学習補正量とから、制御量を設定する
制御量設定手段と、フイードバツク補正量と学習
補正量とから新たな学習補正量を設定してRAM
内の学習補正量のデータを更新する学習補正量更
新手段とを備え、かつ、前記RAMに対し、エン
ジンキースイツチがオフの時に該キースイツチを
介することなく電源を供給してメモリーのバツク
アツプを行うようにした自動車用内燃機関の学習
制御装置において、前記RAMの電源端子への入
力の消失後の再入力によつて反転されるフリツプ
フロツプと、エンジンキースイツチの投入時にフ
リツプフロツプの出力を判定する判定手段と、そ
の判定結果に基づきフリツプフロツプが前記再入
力によつて反転されている時に前記RAM内の学
習補正量のデータを初期値に戻すと共にフリツプ
フロツプを再反転する初期化手段とを設けたこと
を特徴とする自動車用内燃機関の学習制御装置に
おけるメモリーバツクアツプ監視装置。1 The control amount is calculated from the basic control amount predetermined in correspondence with the target value, the feedback correction amount determined based on proportional-integral control by comparing the target value and actual value, and the learning correction amount stored in RAM. A control amount setting means for setting a new learning correction amount from the feedback correction amount and learning correction amount, and
learning correction amount updating means for updating learning correction amount data in the RAM, and backing up the memory by supplying power to the RAM without going through the engine key switch when the engine key switch is off. The learning control device for an internal combustion engine for an automobile has a flip-flop that is inverted by re-input after the input to the power supply terminal of the RAM disappears, and a determination means that determines the output of the flip-flop when the engine key switch is turned on. , further comprising initialization means for returning the learning correction amount data in the RAM to the initial value and re-inverting the flip-flop when the flip-flop is being inverted by the re-input based on the determination result. A memory backup monitoring device in a learning control device for an automobile internal combustion engine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8585883A JPS59211742A (en) | 1983-05-18 | 1983-05-18 | Memory back-up monitoring device of learning control unit of internal-combustion engine for car |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8585883A JPS59211742A (en) | 1983-05-18 | 1983-05-18 | Memory back-up monitoring device of learning control unit of internal-combustion engine for car |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59211742A JPS59211742A (en) | 1984-11-30 |
JPH0328578B2 true JPH0328578B2 (en) | 1991-04-19 |
Family
ID=13870571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8585883A Granted JPS59211742A (en) | 1983-05-18 | 1983-05-18 | Memory back-up monitoring device of learning control unit of internal-combustion engine for car |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59211742A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6232259A (en) * | 1985-08-05 | 1987-02-12 | Japan Electronic Control Syst Co Ltd | Monitor of learning controller for internal combustion engine |
US4715344A (en) * | 1985-08-05 | 1987-12-29 | Japan Electronic Control Systems, Co., Ltd. | Learning and control apparatus for electronically controlled internal combustion engine |
US4854287A (en) * | 1986-10-21 | 1989-08-08 | Japan Electronic Control Systems Co., Ltd. | Apparatus for learning and controlling air/fuel ratio in internal combustion engine |
US4850326A (en) * | 1986-10-21 | 1989-07-25 | Japan Electronic Control Systems, Co., Ltd. | Apparatus for learning and controlling air/fuel ratio in internal combustion engine |
JPS63255541A (en) * | 1987-04-14 | 1988-10-21 | Japan Electronic Control Syst Co Ltd | Air-to-fuel ratio control device of internal combustion engine |
JP2001160004A (en) | 1999-12-03 | 2001-06-12 | Denso Corp | Electronic controller |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56121842A (en) * | 1980-02-28 | 1981-09-24 | Toyota Motor Corp | Engine control method |
JPS56138438A (en) * | 1980-03-28 | 1981-10-29 | Nippon Denso Co Ltd | Control method of air-fuel ratio |
JPS56165744A (en) * | 1980-04-21 | 1981-12-19 | Gen Motors Corp | Flexible air/fuel mixing ratio controller for internal combustion engine |
JPS57102529A (en) * | 1980-12-16 | 1982-06-25 | Nippon Denso Co Ltd | Air-fuel ratio controlling method |
JPS57212349A (en) * | 1981-06-25 | 1982-12-27 | Nissan Motor Co Ltd | Data storage system for electronic control system for motorcar |
-
1983
- 1983-05-18 JP JP8585883A patent/JPS59211742A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56121842A (en) * | 1980-02-28 | 1981-09-24 | Toyota Motor Corp | Engine control method |
JPS56138438A (en) * | 1980-03-28 | 1981-10-29 | Nippon Denso Co Ltd | Control method of air-fuel ratio |
JPS56165744A (en) * | 1980-04-21 | 1981-12-19 | Gen Motors Corp | Flexible air/fuel mixing ratio controller for internal combustion engine |
JPS57102529A (en) * | 1980-12-16 | 1982-06-25 | Nippon Denso Co Ltd | Air-fuel ratio controlling method |
JPS57212349A (en) * | 1981-06-25 | 1982-12-27 | Nissan Motor Co Ltd | Data storage system for electronic control system for motorcar |
Also Published As
Publication number | Publication date |
---|---|
JPS59211742A (en) | 1984-11-30 |
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