JPH04325741A - Internal combusiton engine control device for outboard motor - Google Patents
Internal combusiton engine control device for outboard motorInfo
- Publication number
- JPH04325741A JPH04325741A JP9253491A JP9253491A JPH04325741A JP H04325741 A JPH04325741 A JP H04325741A JP 9253491 A JP9253491 A JP 9253491A JP 9253491 A JP9253491 A JP 9253491A JP H04325741 A JPH04325741 A JP H04325741A
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- load
- acceleration
- throttle opening
- 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 claims abstract description 53
- 230000001133 acceleration Effects 0.000 claims abstract description 34
- 239000000446 fuel Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001360 synchronised effect Effects 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 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、船外機に用いられる
内燃機関の制御装置に関し、特に急加速時で重負荷とな
ったときの加速性能を向上させた船外機用内燃機関制御
装置に関するものである。[Field of Industrial Application] The present invention relates to a control device for an internal combustion engine used in an outboard motor, and in particular to an internal combustion engine control device for an outboard motor that improves acceleration performance under heavy loads during sudden acceleration. It is related to.
【０００２】0002
【従来の技術】図３は一般的な船外機用内燃機関の外観
を示す側面図であり、図において、１は船外機用の内燃
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。2. Description of the Related Art FIG. 3 is a side view showing the appearance of a typical internal combustion engine for an outboard motor. The screw 3, which is rotationally driven by the internal combustion engine 1, is connected to the internal combustion engine 1 via the fixed part 1a.
This is the hull to which the
【０００３】図４は一般的な船外機用内燃機関制御装置
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は内燃機関のアクセル操作量に対応した
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 for an outboard motor. In the figure, 4 indicates an internal combustion engine 1.
5 is a rotation detector provided on the camshaft or crankshaft to detect the rotation speed R; 5 is a throttle detector that detects the throttle opening α corresponding to the accelerator operation amount of the internal combustion engine; 6 is a rotation speed R and the throttle opening; A control circuit that operates control parameters of the internal combustion engine based on various signals including the degree α; 7 is an internal combustion engine 1 driven by a drive signal A from the control circuit 6;
actuator.
【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 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
の船外機用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
づいて駆動信号Ａを生成し、アクチュエータ７（例えば
、燃料ポンプ及びイグニションコイル）を駆動し、燃料
噴射タイミング及び点火タイミングを演算制御する。
又、ギア位置等に応じてスロットル開度αを決定し、空
気供給流量を調節することにより、内燃機関１を所望の
回転数に制御する。Next, the operation of a conventional internal combustion engine control system for an outboard motor will be explained with reference to FIGS. 3 and 4. The control circuit 6 generates a drive signal A based on various signals including rotational speed R, throttle opening α, crank angle reference position signal, and various operating conditions, and controls the actuator 7 (for example, fuel pump and ignition coil). and calculates and controls fuel injection timing and ignition timing. Further, the throttle opening degree α is determined according to the gear position, etc., and the air supply flow rate is adjusted to control the internal combustion engine 1 to a desired rotation speed.
【０００６】ところで、船外機用の内燃機関１の場合、
起動時又は急加速時においては、船体３の船尾が下がり
航行抵抗（負荷）が急激に大きくなるため、内燃機関１
の要求燃料量に対して供給燃料量が不足し、加速性能が
著しく阻害される。By the way, in the case of the internal combustion engine 1 for an outboard motor,
During startup or sudden acceleration, the stern of the hull 3 lowers and navigation resistance (load) increases rapidly, so the internal combustion engine 1
The amount of supplied fuel is insufficient compared to the required amount of fuel, and acceleration performance is significantly impaired.
【０００７】[0007]
【発明が解決しようとする課題】従来の船外機用内燃機
関制御装置は以上のように、急加速時における負荷の増
大に対して何ら対策を施していないので、充分な加速性
能が得られないという問題点があった。[Problem to be Solved by the Invention] As described above, the conventional internal combustion engine control device for an outboard motor does not take any measures against the increase in load during sudden acceleration, so sufficient acceleration performance cannot be obtained. The problem was that there was no.
【０００８】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、所定値以上の加速量が検出され
且つ所定値以上の負荷が検出されたときに出力を増大さ
せることにより、加速性能を向上させた船外機用内燃機
関制御装置を得ることを目的とする。The present invention was made to solve the above-mentioned problems, and by increasing the output when an acceleration amount of a predetermined value or more is detected and a load of a predetermined value or more is detected, The object of the present invention is to obtain an internal combustion engine control device for an outboard motor with improved acceleration performance.
【０００９】[0009]
【課題を解決するための手段】この発明に係る船外機用
内燃機関制御装置は、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、内燃機関の負荷を検出する負
荷検出器と、スロットル開度及び負荷を含む各種信号に
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、内燃機関の加速量に相当する
スロットル開度の増大変化量が所定値以上であるか否か
を判定する加速量判定手段と、加速量が所定値以上のと
きに負荷が所定値以上であるか否かを判定する負荷判定
手段と、負荷が所定値以上のときに内燃機関の出力を増
大させる出力増大手段とを制御回路が含むものである。[Means for Solving the Problems] An internal combustion engine control device for an outboard motor according to the present invention includes a throttle detector for detecting a throttle opening of an internal combustion engine, a load detector for detecting a load of the internal combustion engine, and a throttle detector for detecting a throttle opening of an internal combustion engine. It includes a control circuit that operates control parameters of the internal combustion engine based on various signals including opening and load, and an actuator that is driven by a drive signal from the control circuit, and a throttle opening that corresponds to the acceleration amount of the internal combustion engine. acceleration amount determining means for determining whether the amount of increase in change in the load is greater than or equal to a predetermined value; load determining means for determining whether the load is greater than or equal to the predetermined value when the amount of acceleration is greater than or equal to the predetermined value; The control circuit includes an output increasing means for increasing the output of the internal combustion engine when the internal combustion engine is equal to or greater than a predetermined value.
【００１０】0010
【作用】この発明においては、所定値以上の加速量が検
出され且つ所定値以上の負荷が検出されたときに、内燃
機関の出力を増大させて加速性能を向上させる。According to the present invention, when an acceleration amount greater than a predetermined value is detected and a load greater than a predetermined value is detected, the output of the internal combustion engine is increased to improve acceleration performance.
【００１１】[0011]
【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.
【００１２】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を介した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 the 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.
【００１３】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（複数の気筒に燃料混合気を供給するマ
ニホールド）の圧力を検出する圧力検出器であり、検出
された圧力信号Ｐは入力インタフェース６１に入力され
る。圧力検出器８は、例えば、船体３の船底等に直接設
けられてもよい。Reference numeral 8 denotes a pressure detector that detects the pressure of the intake manifold (manifold that supplies fuel mixture to a plurality of cylinders) corresponding to the load of the internal combustion engine 1, and the detected pressure signal P is sent to the input interface 61. is input. The pressure detector 8 may be provided directly on the bottom of the hull 3, for example.
【００１４】この場合、制御回路６内のマイクロコンピ
ュータ６２は、内燃機関１の加速量に相当するスロット
ル開度αの増大変化量が所定値以上であるか否かを判定
する加速量判定手段と、加速量が所定値以上のときに負
荷に相当する圧力信号Ｐが所定値以上であるか否かを判
定する負荷判定手段と、負荷が所定値以上のときに内燃
機関の出力を増大させる出力増大手段とをを含んでいる
。In this case, the microcomputer 62 in the control circuit 6 serves as an acceleration amount determining means for determining whether the amount of increase in the throttle opening α corresponding to the amount of acceleration of the internal combustion engine 1 is greater than or equal to a predetermined value. , load determination means for determining whether a pressure signal P corresponding to the load is equal to or greater than a predetermined value when the acceleration amount is equal to or greater than a predetermined value; and an output for increasing the output of the internal combustion engine when the load is equal to or greater than the predetermined value. and an increasing means.
【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おり、まず、スロットル開度
αを検出し（ステップＳ１）、又、圧力信号Ｐを検出す
る（ステップＳ２）。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, the throttle opening degree α is detected (step S1), and the pressure signal P is also detected (step S2).
【００１６】続いて、内燃機関１の加速量に相当するス
ロットル開度αの増大変化量を算出し（ステップＳ３）
、増大変化量即ち加速量が所定値以上か否かを判定する
（ステップＳ４）。もし、加速量が所定値以上であれば
、その時点の負荷に相当する圧力信号Ｐが所定値以上か
否かを判定し（ステップＳ５）、圧力信号Ｐ即ち負荷が
所定値以上であれば、内燃機関１の出力を増大させて加
速性能を向上させる（ステップＳ６）。Next, an increase in the throttle opening α corresponding to the acceleration of the internal combustion engine 1 is calculated (step S3).
, it is determined whether the increased change amount, ie, the acceleration amount, is greater than or equal to a predetermined value (step S4). If the acceleration amount is greater than or equal to a predetermined value, it is determined whether the pressure signal P corresponding to the load at that time is greater than or equal to a predetermined value (step S5), and if the pressure signal P, that is, the load is greater than or equal to the predetermined value, The output of the internal combustion engine 1 is increased to improve acceleration performance (step S6).
【００１７】このときの出力増大制御はアクチュエータ
７に対する駆動信号Ａにより行われるが、急加速時には
スロットル開度αが全開状態なのでスロットルを制御す
ることは無駄である。従って、例えば、燃料ポンプの燃
料吐出量を増大（リッチ化）させ、空燃比を理想の空燃
比１４．７から１０程度まで小さくすればよい。具体的
には、通常の燃料噴射パルス間に非同期パルスを追加し
て燃料噴射が行われる。又は、イグニションコイルの通
電タイミングを進角側に移行させて出力を増大制御する
ことも考えられる。The output increase control at this time is performed by the drive signal A to the actuator 7, but since the throttle opening α is fully open during sudden acceleration, it is useless to control the throttle. Therefore, for example, the fuel discharge amount of the fuel pump may be increased (richer) to reduce the air-fuel ratio from the ideal air-fuel ratio of 14.7 to about 10. Specifically, fuel injection is performed by adding an asynchronous pulse between normal fuel injection pulses. Alternatively, it is also possible to increase the output by shifting the energization timing of the ignition coil to the advance side.
【００１８】これにより、所定量以上の急加速時におい
て負荷が増大しても、駆動信号Ａによって内燃機関１の
制御パラメータを可変制御することにより、加速性能を
向上させることができる。[0018] Thereby, even if the load increases during sudden acceleration exceeding a predetermined amount, the acceleration performance can be improved by variably controlling the control parameters of the internal combustion engine 1 using the drive signal A.
【００１９】[0019]
【発明の効果】以上のようにこの発明によれば、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、内
燃機関の負荷を検出する負荷検出器と、スロットル開度
及び負荷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、内
燃機関の加速量に相当するスロットル開度の増大変化量
が所定値以上であるか否かを判定する加速量判定手段と
、加速量が所定値以上のときに負荷が所定値以上である
か否かを判定する負荷判定手段と、負荷が所定値以上の
ときに内燃機関の出力を増大させる出力増大手段とを制
御回路に設けたので、所定値以上の加速量及び所定値以
上の負荷が検出されたときに内燃機関の出力を増大させ
るようにしたので、急加速時の重負荷に対する加速性能
を向上させた船外機用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 throttle detector for detecting the throttle opening of an internal combustion engine, a load detector for detecting the load of the internal combustion engine, and various signals including the throttle opening and the load. and an actuator that is driven by a drive signal from the control circuit. acceleration amount determining means for determining whether or not the load is greater than or equal to the predetermined value; Since the control circuit is equipped with an output increasing means for increasing the output of the engine, the output of the internal combustion engine is increased when an acceleration amount of a predetermined value or more and a load of a predetermined value or more are detected. This has the effect of providing an internal combustion engine control device for an outboard motor with improved acceleration performance under heavy loads.
【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】一般的な船外機用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 for an outboard motor.
【図４】一般的な船外機用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 for an outboard motor.
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
α スロットル開度
Ｐ 圧力信号
Ａ 駆動信号
Ｓ４ 加速量を判定するステップＳ５ 負
荷を判定するステップ1 Internal combustion engine 5 Throttle detector 6 Control circuit 7 Actuator 8 Pressure detector 62 Microcomputer α Throttle opening P Pressure signal A Drive signal S4 Step S5 to determine the amount of acceleration Step to determine the load
Claims (1)
スロットル検出器と、前記内燃機関の負荷を検出する負
荷検出器と、前記スロットル開度及び前記負荷を含む各
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
記内燃機関の加速量に相当する前記スロットル開度の増
大変化量が所定値以上であるか否かを判定する加速量判
定手段と、前記加速量が所定値以上のときに前記負荷が
所定値以上であるか否かを判定する負荷判定手段と、前
記負荷が所定値以上のときに前記内燃機関の出力を増大
させる出力増大手段と、を含むことを特徴とする船外機
用内燃機関制御装置。1. A throttle detector for detecting a throttle opening of an internal combustion engine, a load detector for detecting a load of the internal combustion engine, and a load detector for detecting a throttle opening of the internal combustion engine based on various signals including the throttle opening and the load. The control circuit includes a control circuit that operates a control parameter, and an actuator that is driven by a drive signal from the control circuit, and the control circuit is configured to adjust the increase change amount of the throttle opening corresponding to the acceleration amount of the internal combustion engine to a predetermined value. acceleration amount determining means for determining whether the load is greater than or equal to a predetermined value; load determining means for determining whether the load is greater than or equal to a predetermined value when the acceleration amount is greater than or equal to a predetermined value; An internal combustion engine control device for an outboard motor, comprising: output increasing means for increasing the output of the internal combustion engine when
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9253491A JPH04325741A (en) | 1991-04-24 | 1991-04-24 | Internal combusiton engine control device for outboard motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9253491A JPH04325741A (en) | 1991-04-24 | 1991-04-24 | Internal combusiton engine control device for outboard motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04325741A true JPH04325741A (en) | 1992-11-16 |
Family
ID=14057033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9253491A Pending JPH04325741A (en) | 1991-04-24 | 1991-04-24 | Internal combusiton engine control device for outboard motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04325741A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011126391A (en) * | 2009-12-16 | 2011-06-30 | Honda Motor Co Ltd | Outboard motor control apparatus |
| JP2011126389A (en) * | 2009-12-16 | 2011-06-30 | Honda Motor Co Ltd | Outboard motor control apparatus |
| US8858281B2 (en) | 2009-12-16 | 2014-10-14 | Honda Motor Co., Ltd. | Outboard motor control apparatus |
-
1991
- 1991-04-24 JP JP9253491A patent/JPH04325741A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011126391A (en) * | 2009-12-16 | 2011-06-30 | Honda Motor Co Ltd | Outboard motor control apparatus |
| JP2011126389A (en) * | 2009-12-16 | 2011-06-30 | Honda Motor Co Ltd | Outboard motor control apparatus |
| US8858281B2 (en) | 2009-12-16 | 2014-10-14 | Honda Motor Co., Ltd. | Outboard motor control apparatus |
| US9376196B2 (en) | 2009-12-16 | 2016-06-28 | Honda Motor Co., Ltd. | Outboard motor control apparatus |
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