JPH04325739A - Internal combustion engine control device - Google Patents
Internal combustion engine control deviceInfo
- Publication number
- JPH04325739A JPH04325739A JP9519591A JP9519591A JPH04325739A JP H04325739 A JPH04325739 A JP H04325739A JP 9519591 A JP9519591 A JP 9519591A JP 9519591 A JP9519591 A JP 9519591A JP H04325739 A JPH04325739 A JP H04325739A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- internal combustion
- combustion engine
- fluctuation
- control circuit
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 48
- 239000002737 fuel gas Substances 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012935 Averaging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000001360 synchronised effect Effects 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
- F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
Landscapes
- Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Ignition Timing (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、船外機等に用いられ
る内燃機関の制御装置に関し、特にインテークマニホー
ルドの圧力変動が大きいトローリング時に圧力以外の各
種信号に応じて制御パラメータを決定することにより、
回転変動を抑制して乗心地を向上させた内燃機関制御装
置に関するものである。[Industrial Field of Application] This invention relates to a control device for an internal combustion engine used in an outboard motor, etc., and in particular, the present invention relates to a control device for an internal combustion engine used in an outboard motor, etc., and is capable of determining control parameters in accordance with various signals other than pressure, especially during trolling where pressure fluctuations in the intake manifold are large. ,
The present invention relates to an internal combustion engine control device that improves riding comfort by suppressing rotational fluctuations.
【０００２】0002
【従来の技術】図３は一般的な船外機用の内燃機関の外
観を示す側面図であり、図において、１はの内燃機関、
２は水面下に位置して内燃機関１により回転駆動される
スクリュー、３は固定部１ａを介して内燃機関１が取り
付けられる船体である。内燃機関１は、操縦者の操作に
より、トリム角方向（矢印参照）及び蛇角方向に回転で
きるようになっている。2. Description of the Related Art FIG. 3 is a side view showing the appearance of a general internal combustion engine for an outboard motor.
Reference numeral 2 designates a screw located below the water surface and rotationally driven by the internal combustion engine 1, and 3 designates a hull to which the internal combustion engine 1 is attached via a fixed part 1a. The internal combustion engine 1 can be rotated in the trim angle direction (see the arrow) and the meandering angle direction by the operator's operation.
【０００３】図４は一般的な内燃機関制御装置を示すブ
ロック図であり、図において、４は内燃機関１のカム軸
やクランク軸に設けられて回転数Ｒを検出する回転検出
器、５は内燃機関のスロットル開度αを検出するスロッ
トル検出器、６は回転数Ｒ及びスロットル開度αを含む
各種信号に基づいて内燃機関の制御パラメータを操作す
る制御回路、７は制御回路６からの駆動信号Ａにより駆
動される内燃機関１のアクチュエータである。FIG. 4 is a block diagram showing a general internal combustion engine control device. In the figure, 4 is a rotation detector provided on the camshaft or crankshaft of the internal combustion engine 1 to detect the rotation speed R, and 5 is a rotation detector. A throttle detector that detects the throttle opening α of the internal combustion engine; 6 a control circuit that operates control parameters of the internal combustion engine based on various signals including the rotation speed R and the throttle opening α; 7 a drive from the control circuit 6; This is an actuator of an internal combustion engine 1 driven by a signal A.
【０００４】尚、回転検出器４は、内燃機関１の回転に
同期したクランク角基準位置信号を生成し、制御回路６
に入力している。又、図示しない種々の検出器から、内
燃機関の運転状態（ギア位置やインテークマニホールド
圧力等）を示す各種信号が制御回路６に入力されている
。又、アクチュエータ７は、燃料ポンプ、イグニション
コイル、スロットル及び起動モータ等、内燃機関１に関
連する種々の駆動制御要素を含んでいる。Note that the rotation detector 4 generates a crank angle reference position signal synchronized with the rotation of the internal combustion engine 1, and outputs a crank angle reference position signal to the control circuit 6.
is being entered. Further, various signals indicating the operating state of the internal combustion engine (gear position, intake manifold pressure, etc.) are inputted to the control circuit 6 from various detectors (not shown). Further, the actuator 7 includes various drive control elements related to the internal combustion engine 1, such as a fuel pump, an ignition coil, a throttle, and a starting motor.
【０００５】次に、図３及び図４を参照しながら、従来
の内燃機関制御装置の動作について説明する。制御回路
６は、回転数Ｒ、スロットル開度α、クランク角基準位
置信号及び種々の運転状態を含む各種信号に基づいて、
燃料噴射量、燃料噴射タイミング及び点火タイミング等
を演算制御する。そして、演算結果に応じた駆動信号Ａ
を生成し、アクチュエータ７（例えば、スロットル、燃
料ポンプ及びイグニションコイル）を駆動し、空気供給
流量、燃料量及び点火時期等を操作することにより、内
燃機関１を所望の出力及び回転数に制御する。Next, the operation of the conventional internal combustion engine control system will be explained with reference to FIGS. 3 and 4. The control circuit 6 operates based on various signals including the rotational speed R, throttle opening α, crank angle reference position signal, and various operating conditions.
Calculate and control fuel injection amount, fuel injection timing, ignition timing, etc. Then, drive signal A according to the calculation result
The internal combustion engine 1 is controlled to the desired output and rotational speed by generating the internal combustion engine 1, driving the actuator 7 (e.g., throttle, fuel pump, and ignition coil), and manipulating the air supply flow rate, fuel amount, ignition timing, etc. .
【０００６】このとき、内燃機関１の負荷に応じて制御
パラメータを操作するため、負荷に対応したインテーク
マニホールドの圧力を検出し、圧力に応じて駆動信号Ａ
による操作量を決定している。又、供給燃料ガスの圧力
は、各気筒の吸入行程毎に高周波数で変動するため、制
御パラメータの決定に用いられる前に、デジタルフィル
タを介した平均化処理により安定化される。At this time, in order to operate the control parameters according to the load of the internal combustion engine 1, the pressure of the intake manifold corresponding to the load is detected, and the drive signal A is
The amount of operation is determined by Furthermore, since the pressure of the supplied fuel gas fluctuates at a high frequency during each intake stroke of each cylinder, it is stabilized by averaging processing via a digital filter before being used for determining control parameters.
【０００７】ところで、内燃機関１が船外機に用いられ
る場合、トローリング時において船体３を低速度で航行
させる必要があるが、低周波数における圧力変動が大き
いために平均化処理が充分に行われなくなり、圧力の脈
動成分が制御パラメータに反映されてしまい、回転変動
が生じて乗心地を著しく損なってしまう。[0007] By the way, when the internal combustion engine 1 is used as an outboard motor, it is necessary to move the hull 3 at a low speed during trolling, but since the pressure fluctuations at low frequencies are large, the averaging process is not performed sufficiently. As a result, the pressure pulsation component is reflected in the control parameters, causing rotational fluctuations and significantly impairing riding comfort.
【０００８】[0008]
【発明が解決しようとする課題】従来の内燃機関制御装
置は以上のように、トローリング時などの圧力変動が大
きい状態において、制御パラメータの操作量が不安定と
なり、回転変動が生じて乗心地を損なうという問題点が
あった。[Problems to be Solved by the Invention] As described above, with conventional internal combustion engine control devices, when pressure fluctuations are large such as during trolling, the manipulated variables of control parameters become unstable, causing rotational fluctuations and reducing riding comfort. There was the problem of damage.
【０００９】この発明は上記のような問題点を解決する
ためになされたもので、圧力変動が大きい状態が検出さ
れたときには圧力以外の各種信号に基づく制御を行うこ
とにより回転変動を抑制し、乗心地を改善させた内燃機
関制御装置を得ることを目的とする。The present invention has been made to solve the above-mentioned problems, and when a state of large pressure fluctuation is detected, the rotational fluctuation is suppressed by controlling based on various signals other than pressure. The object of the present invention is to obtain an internal combustion engine control device that improves riding comfort.
【００１０】0010
【課題を解決するための手段】この発明に係る内燃機関
制御装置は、内燃機関に供給される燃料ガスの圧力を検
出する圧力検出器と、内燃機関のスロットル開度を検出
するスロットル検出器と、圧力及びスロットル開度を含
む各種信号に基づいて内燃機関の制御パラメータを操作
する制御回路と、制御回路からの駆動信号により駆動さ
れるアクチュエータとを備えると共に、圧力の変動が所
定値より小さいときには駆動信号による制御パラメータ
の操作量を圧力に応じて決定する操作量決定手段と、圧
力の変動が所定値以上のときには操作量を圧力以外の各
種信号に応じて決定する操作量決定手段とを制御回路に
設けたものである。[Means for Solving the Problems] An internal combustion engine control device according to the present invention includes a pressure detector for detecting the pressure of fuel gas supplied to the internal combustion engine, and a throttle detector for detecting the throttle opening of the internal combustion engine. , a control circuit that operates control parameters of the internal combustion engine based on various signals including pressure and throttle opening, and an actuator that is driven by a drive signal from the control circuit, and when the fluctuation in pressure is smaller than a predetermined value. Controls a manipulated variable determining means that determines the manipulated variable of a control parameter by a drive signal according to the pressure, and a manipulated variable determining means that determines the manipulated variable according to various signals other than the pressure when the fluctuation in pressure is greater than a predetermined value. It is installed in the circuit.
【００１１】[0011]
【作用】この発明においては、通常は圧力に応じて制御
パラメータの操作量を決定し、圧力変動が大きいときに
は圧力以外の各種信号に応じて操作量を決定することに
より、回転変動を抑制して乗心地を向上させる。[Operation] In this invention, rotational fluctuations are suppressed by normally determining the manipulated amount of the control parameter according to the pressure, and when the pressure fluctuation is large, determining the manipulated amount according to various signals other than pressure. Improve riding comfort.
【００１２】0012
【実施例】以下、この発明の一実施例を図について説明
する。図１はこの発明の一実施例の制御回路を示すブロ
ック図であり、７、Ｒ、α及びＡは前述と同様のもので
ある。又、内燃機関１及び装置全体の構成は図３及び図
４に示した通りである。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a control circuit according to an embodiment of the present invention, where 7, R, α, and A are the same as described above. Further, the structure of the internal combustion engine 1 and the entire device is as shown in FIGS. 3 and 4.
【００１３】図１において、制御回路６は、回転数Ｒ及
びスロットル開度α並びに他の運転状態を含む各種信号
を取り込むための入力インタフェース６１と、入力イン
タフェース６１を介して各種信号を取り込むマイクロコ
ンピュータ６２と、マイクロコンピュータ６２から生成
される駆動信号Ａをアクチュエータ７に送出するための
出力インタフェース６３とを備えている。In FIG. 1, the control circuit 6 includes an input interface 61 for receiving various signals including rotational speed R, throttle opening α, and other operating conditions, and a microcomputer for receiving various signals via the input interface 61. 62, and an output interface 63 for sending the drive signal A generated from the microcomputer 62 to the actuator 7.
【００１４】８は内燃機関１の負荷に対応したインテー
クマニホールドの圧力Ｐを検出する圧力検出器であり、
検出された圧力Ｐは制御回路６に入力される。又、制御
回路６内のマイクロコンピュータ６２は、圧力Ｐの変動
が所定値より小さいときには駆動信号Ａによる制御パラ
メータの操作量を圧力Ｐに応じて決定する操作量決定手
段と、圧力Ｐの変動が所定値以上のときには操作量を圧
力以外の各種信号（例えば、スロットル開度α）に応じ
て決定する操作量決定手段とを含んでいる。8 is a pressure detector that detects the pressure P of the intake manifold corresponding to the load of the internal combustion engine 1;
The detected pressure P is input to the control circuit 6. Further, the microcomputer 62 in the control circuit 6 includes a manipulated variable determining means that determines the manipulated variable of the control parameter by the drive signal A according to the pressure P when the fluctuation of the pressure P is smaller than a predetermined value, and a When the pressure is greater than or equal to a predetermined value, the operation amount determining means determines the operation amount in accordance with various signals other than the pressure (for example, throttle opening degree α).
【００１５】次に、図２のフローチャート並びに図３及
び図４を参照しながら、図１に示したこの発明の一実施
例の動作について説明する。図２はマイクロコンピュー
タ６２の処理手順を示している。まず、圧力検出器８に
より圧力Ｐを検出した後、圧力Ｐの変動（変化率ｄＰ／
ｄｔ）が所定値β以上か否かを判定する（ステップＳ１
）。Next, the operation of the embodiment of the present invention shown in FIG. 1 will be explained with reference to the flowchart in FIG. 2 and FIGS. 3 and 4. FIG. 2 shows the processing procedure of the microcomputer 62. First, after the pressure P is detected by the pressure detector 8, the fluctuation of the pressure P (change rate dP/
dt) is greater than or equal to a predetermined value β (step S1
).
【００１６】もし、通常の運転中であって圧力Ｐが所定
値βより小さいときには、平均化処理後の圧力Ｐを制御
情報γとして（ステップＳ２）、圧力Ｐからなる制御情
報γに基づいて、関数ｆ（γ）により、制御パラメータ
の操作量即ち駆動信号Ａを決定する（ステップＳ３）。If the pressure P is smaller than the predetermined value β during normal operation, the pressure P after the averaging process is used as the control information γ (step S2), and based on the control information γ consisting of the pressure P, The manipulated variable of the control parameter, ie, the drive signal A, is determined by the function f(γ) (step S3).
【００１７】一方、トローリング時などにより、圧力Ｐ
の変動が所定値β以上であれば、圧力Ｐ以外の各種信号
即ちスロットル開度αを制御情報γとし（ステップＳ４
）、スロットル開度αからなる制御情報γに基づく関数
ｆ（γ）により駆動信号Ａを決定し（ステップＳ３）、
所望の制御パラメータ操作量を得る。On the other hand, during trolling, the pressure P
If the fluctuation of
), the drive signal A is determined by a function f(γ) based on the control information γ consisting of the throttle opening α (step S3),
Obtain the desired control parameter manipulated variables.
【００１８】こうして、決定された駆動信号Ａにより、
燃料の噴射を行うインジェクタが駆動制御され、又、点
火を行うイグニションコイル等が駆動制御される。通常
、負荷を表わす制御情報γとしては圧力Ｐが適している
が、圧力Ｐの変動が大きくて使用できない場合は、スロ
ットル開度αを代用することができる。With the drive signal A determined in this way,
An injector that injects fuel is driven and controlled, and an ignition coil that performs ignition and the like are driven and controlled. Normally, the pressure P is suitable as the control information γ representing the load, but if the pressure P fluctuates too much to be used, the throttle opening α can be used instead.
【００１９】これにより、アクチュエータ７に対する駆
動信号Ａは、圧力Ｐに含まれる大きな脈動成分に影響さ
れずに安定に制御パラメータを操作することができる。
従って、駆動信号Ａによる制御パラメータの操作量が適
切となり、トローリング時における回転変動が抑制され
て乗心地が改善される。Thereby, the drive signal A for the actuator 7 can stably operate the control parameters without being affected by the large pulsation component contained in the pressure P. Therefore, the amount of operation of the control parameters by the drive signal A becomes appropriate, rotation fluctuations during trolling are suppressed, and riding comfort is improved.
【００２０】尚、上記実施例では、内燃機関１が船外機
用の場合を示したが、他の内燃機関であっても同等の効
果を奏する。又、圧力変動の大きい状態がトローリング
時である場合を例にとって説明したが、他の状態であっ
ても同等の効果を奏する。In the above embodiment, the internal combustion engine 1 is for an outboard motor, but other internal combustion engines can also produce similar effects. Moreover, although the case where the state where the pressure fluctuation is large is during trolling has been described as an example, the same effect can be achieved even in other states.
【００２１】[0021]
【発明の効果】以上のようにこの発明によれば、内燃機
関に供給される燃料ガスの圧力を検出する圧力検出器と
、内燃機関のスロットル開度を検出するスロットル検出
器と、圧力及びスロットル開度を含む各種信号に基づい
て内燃機関の制御パラメータを操作する制御回路と、制
御回路からの駆動信号により駆動されるアクチュエータ
とを備えると共に、圧力の変動が所定値より小さいとき
には駆動信号による制御パラメータの操作量を圧力に応
じて決定する操作量決定手段と、圧力の変動が所定値以
上のときには操作量を圧力以外の各種信号に応じて決定
する操作量決定手段とを制御回路に設け、圧力変動が大
きいときには圧力が制御パラメータの操作量に反映され
ないようにしたので、回転変動を抑制して乗心地を改善
させた内燃機関制御装置が得られる効果がある。As described above, according to the present invention, there is provided a pressure detector for detecting the pressure of fuel gas supplied to an internal combustion engine, a throttle detector for detecting the throttle opening of the internal combustion engine, and a pressure detector for detecting the pressure of the fuel gas supplied to the internal combustion engine. It includes a control circuit that operates the control parameters of the internal combustion engine based on various signals including the opening degree, and an actuator that is driven by a drive signal from the control circuit, and when the pressure fluctuation is smaller than a predetermined value, it is controlled by the drive signal. A control circuit is provided with a manipulated variable determining means that determines the manipulated variable of the parameter according to the pressure, and a manipulated variable determining means that determines the manipulated variable according to various signals other than the pressure when the fluctuation of the pressure is equal to or greater than a predetermined value, Since the pressure is not reflected in the manipulated variable of the control parameter when the pressure fluctuation is large, it is possible to obtain an internal combustion engine control device that suppresses rotational fluctuation and improves riding comfort.
【図１】この発明の一実施例の制御回路を示すブロック
図である。FIG. 1 is a block diagram showing a control circuit according to an embodiment of the present invention.
【図２】図１内のマイクロコンピュータの処理手順を示
すフローチャートである。FIG. 2 is a flowchart showing a processing procedure of the microcomputer in FIG. 1;
【図３】一般的な内燃機関制御装置を示すブロック図で
ある。FIG. 3 is a block diagram showing a general internal combustion engine control device.
【図４】一般的な内燃機関を示す側面図である。FIG. 4 is a side view showing a general internal combustion engine.
１ 内燃機関 ５ スロットル検出器 ６ 制御回路 ７ アクチュエータ ８ 圧力検出器 ６２ マイクロコンピュータ Ａ 駆動信号 α スロットル開度 Ｐ 圧力 β 所定値 γ 制御情報 1 Internal combustion engine 5 Throttle detector 6 Control circuit 7 Actuator 8 Pressure detector 62 Microcomputer A Drive signal α Throttle opening P Pressure β Predetermined value γ Control information
Claims (1)
を検出する圧力検出器と、前記内燃機関のスロットル開
度を検出するスロットル検出器と、前記圧力及びスロッ
トル開度を含む各種信号に基づいて前記内燃機関の制御
パラメータを操作する制御回路と、前記制御回路からの
駆動信号により駆動されるアクチュエータとを備え、前
記制御回路は、前記圧力の変動が所定値より小さいとき
には前記駆動信号による制御パラメータの操作量を前記
圧力に応じて決定する操作量決定手段と、前記圧力の変
動が所定値以上のときには前記操作量を前記圧力以外の
各種信号に応じて決定する操作量決定手段と、を含むこ
とを特徴とする内燃機関制御装置。1. A pressure detector for detecting the pressure of fuel gas supplied to an internal combustion engine; a throttle detector for detecting a throttle opening of the internal combustion engine; a control circuit that operates control parameters of the internal combustion engine; and an actuator that is driven by a drive signal from the control circuit; a manipulated variable determining means that determines the manipulated variable of the parameter according to the pressure; and a manipulated variable determining means that determines the manipulated variable according to various signals other than the pressure when the fluctuation in the pressure is greater than or equal to a predetermined value. An internal combustion engine control device comprising:
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9519591A JPH04325739A (en) | 1991-04-25 | 1991-04-25 | Internal combustion engine control device |
| US07/870,913 US5339784A (en) | 1991-04-22 | 1992-04-20 | Control apparatus for a marine engine |
| DE4213267A DE4213267C2 (en) | 1991-04-22 | 1992-04-22 | Control device for a boat engine |
| US08/167,348 US5364322A (en) | 1991-04-22 | 1993-12-15 | Control apparatus for a marine engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9519591A JPH04325739A (en) | 1991-04-25 | 1991-04-25 | Internal combustion engine control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04325739A true JPH04325739A (en) | 1992-11-16 |
Family
ID=14130974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9519591A Pending JPH04325739A (en) | 1991-04-22 | 1991-04-25 | Internal combustion engine control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04325739A (en) |
-
1991
- 1991-04-25 JP JP9519591A patent/JPH04325739A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH04325734A (en) | Internal combustion engine controlling device for outboard motor | |
| JPH0251052B2 (en) | ||
| JPH09264148A (en) | Intake flow control device for internal combustion engine | |
| JP4358946B2 (en) | Fuel injection type 4-cycle engine | |
| JP2849322B2 (en) | Engine fuel injection control device | |
| JPH04325739A (en) | Internal combustion engine control device | |
| US4773373A (en) | Engine control system | |
| JPH0577873B2 (en) | ||
| JPH04325753A (en) | Internal combustion engine control device | |
| JPH0689686B2 (en) | Air-fuel ratio controller for engine | |
| JPH04321738A (en) | Internal combustion engine control device for outboard engine | |
| JPH04325741A (en) | Internal combusiton engine control device for outboard motor | |
| JPH04321749A (en) | Internal combustion engine control apparatus for outboard motor | |
| JP2930256B2 (en) | Engine throttle valve controller | |
| JP3116720B2 (en) | Fuel supply control device for internal combustion engine | |
| JP3057373B2 (en) | Engine fuel control device | |
| JPS6075756A (en) | Fuel pump controller | |
| JPS6258041A (en) | Suction pressure detector for internal combustion engine | |
| JP4254520B2 (en) | Engine air-fuel ratio control device | |
| JPH0216346A (en) | Fuel feed control method for internal combustion engine | |
| JPH06307248A (en) | Intake air amount control device for internal combustion engine | |
| JPS61126351A (en) | Control device of fuel injection quantity in fuel-injection engine | |
| JPS6123845A (en) | Air-fuel ratio controller | |
| JPH0586935A (en) | Fuel injection quantity controller of engine | |
| JPH1077882A (en) | Deceleration control device for internal combustion engine |