JPS62291473A - Ignition timing control device for engine - Google Patents
Ignition timing control device for engineInfo
- Publication number
- JPS62291473A JPS62291473A JP13679686A JP13679686A JPS62291473A JP S62291473 A JPS62291473 A JP S62291473A JP 13679686 A JP13679686 A JP 13679686A JP 13679686 A JP13679686 A JP 13679686A JP S62291473 A JPS62291473 A JP S62291473A
- Authority
- JP
- Japan
- Prior art keywords
- ignition timing
- acceleration
- engine
- ignition
- correction
- 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
- 230000001133 acceleration Effects 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Electrical Control Of Ignition Timing (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
（産業上の利用分野）
本発明は、エンジンの点火時期制御装置に関するもので
ある。Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an ignition timing control device for an engine.
（従来の技術）
一般に、ノッキングの発生と点火時期とは重大な相関関
係があり、点火時期を進角させるほどノッキングの発生
が増大する傾向にあることが知られている。(Prior Art) Generally, there is a significant correlation between the occurrence of knocking and ignition timing, and it is known that the occurrence of knocking tends to increase as the ignition timing is advanced.
そこで、例えば特開昭５６−２０７６４号公報に記載さ
れるように、ノッキングが発生しやすくなる加速時に、
点火時期を遅角することが行われている。Therefore, as described in JP-A-56-20764, for example, during acceleration when knocking is likely to occur,
The ignition timing is being retarded.
（発明が解決しようとする問題点）
ところで２例えば第４図に示すように、加速時には、ス
ロットル開度の増大により吸入空気量が増大し、圧縮圧
力が増大し、高い出力が要求されるが、加速判定直後に
点火される気筒＃１は、加速判定された時点ｐｔでは吸
気行程が終了しており、スロットル開度が増大する前の
吸気行程によるため吸入空気量が少なく、点火時期を遅
角させ緩慢燃焼させると、上記要求に見合う出力が出せ
ず、エンジン回転数の低下を招来する（第４図破線の従
来例参照）。なお、特開昭５８−２０４９７４号公報に
は、加速時１点火時期を進角するものが開示されている
が、これは、エアフローメータのオーバーシュートによ
り点火時期が遅角されることに対しリミッタを設けるも
のであって、進角するというよりも正規の点火時期を補
正するものであり、上記のような間層を解消することは
できない。(Problems to be Solved by the Invention) By the way, 2. For example, as shown in FIG. 4, during acceleration, the amount of intake air increases due to an increase in the throttle opening, the compression pressure increases, and a high output is required. In cylinder #1, which is fired immediately after acceleration is determined, the intake stroke has finished at the time point pt when acceleration is determined, and the intake stroke occurs before the throttle opening increases, so the amount of intake air is small, and the ignition timing is delayed. If the engine is angled and burns slowly, the output that meets the above requirements cannot be produced, resulting in a decrease in engine speed (see the conventional example indicated by the broken line in FIG. 4). Note that Japanese Patent Application Laid-Open No. 58-204974 discloses a device that advances the ignition timing by one point during acceleration, but this is a limiter that prevents the ignition timing from being retarded due to overshoot of the air flow meter. This is to correct the normal ignition timing rather than to advance the ignition timing, and cannot eliminate the above-mentioned gap.
本発明はかかる点に鑑みてなされたもので、加速時に、
燃焼行程にある気筒の燃焼性を向上させることにより、
エンジン回転数の低下を防止したエンジンの点火時期制
御装置を提供することを目的とする。The present invention has been made in view of this point, and when accelerating,
By improving the combustibility of the cylinder during the combustion stroke,
An object of the present invention is to provide an engine ignition timing control device that prevents a decrease in engine speed.
（問題点を解決するための手段）
上記目的を達成するための本発明の構成は、実施例に対
応する第１図に沿って説明すると、エンジンの運転状態
を検出する運転状態検出手段（例えばエアフローメータ
５、回転数センサ１０）と。(Means for Solving the Problems) The configuration of the present invention for achieving the above object will be described with reference to FIG. 1 corresponding to the embodiment. air flow meter 5, rotation speed sensor 10).
該運転状態検出手段の出力を受け運転状態に応じた点火
時期を設定する点火時期設定手段１０１を有するエンジ
ンの点火時期制御装置を前提とする。The ignition timing control device for an engine is assumed to have an ignition timing setting means 101 that receives the output of the operating state detection means and sets the ignition timing according to the operating state.
しかして、本発明の構成は、エンジンの加速状態を検出
する加速検出手段１０２と、該加速検出手段の出力を受
け、加速状態が検出されたときに、吸気行程が終了して
おりかつ点火の行われてない気筒の点火時期を加速状態
に移行したときの要求点火時期よりも進角補正する点火
時期補正手段ｌＯ３を有することを特徴とするものであ
る。Therefore, the configuration of the present invention includes an acceleration detecting means 102 that detects the acceleration state of the engine, and an output of the acceleration detecting means, and when the acceleration state is detected, the intake stroke is completed and the ignition is turned off. The present invention is characterized in that it includes an ignition timing correction means lO3 that advances the ignition timing of the cylinders in which the ignition timing has not been performed so as to be more advanced than the required ignition timing when the ignition timing is shifted to the acceleration state.
（作用）
加速検出手段１０２にてエンジンの加速状態が検出され
ると、吸気行程が終了しておりかつ点火の行われていな
い気筒の点火時期を、点火時期設定手段１０１にて設定
された加速状態に移行したときの要求点火時期よりも、
点火時期補正手段１０３にて進角補正され、燃焼行程に
ある上記気筒の燃焼性が向上し、エンジン回転数は低下
しない。(Function) When the acceleration state of the engine is detected by the acceleration detection means 102, the ignition timing of the cylinder whose intake stroke has ended and ignition is not performed is adjusted to the acceleration set by the ignition timing setting means 101. than the required ignition timing when the state shifts to
The ignition timing correction means 103 performs advance correction, improving the combustibility of the cylinder in the combustion stroke, and the engine speed does not decrease.
（実施例） 以下１本発明の実施例を図面に沿って説明する。(Example) An embodiment of the present invention will be described below with reference to the drawings.
第１図に全体構成を示すエンジンの点火時期制御装置に
おいて、１は４気筒のエンジンで、その燃焼室２に吸気
通路３及び排気通路４が接続されている。In an engine ignition timing control system whose overall configuration is shown in FIG. 1, reference numeral 1 denotes a four-cylinder engine, and an intake passage 3 and an exhaust passage 4 are connected to a combustion chamber 2 of the engine.
吸気通路３には、上流側から、エアフローメータ５、ス
ロットル弁６、サージタンク７及びインジェクタ８が順
に配設されている。９はスロットル弁６の開度を検出す
るスロットルセンサ、１０はエンジン回転数を検出する
回転数センサ、１１はイグナイタ、１２は、ディストリ
ビュータ、１３は点火プラグである。In the intake passage 3, an air flow meter 5, a throttle valve 6, a surge tank 7, and an injector 8 are arranged in this order from the upstream side. 9 is a throttle sensor that detects the opening degree of the throttle valve 6, 10 is a rotation speed sensor that detects the engine speed, 11 is an igniter, 12 is a distributor, and 13 is a spark plug.
１５はコントロールユニットで、運転状態検出手段とし
てのエアフローメータ５及び回転数センサ１２よりの吸
入空気量信号及び回転数信号を受けて運転状態に応じた
点火時期を設定する点火時期設定手段１０１と、スロッ
トルセンサ９の出力を受けてエンジンの加速状態を検出
する加速検出手段１０２と、該加速検出手段の出力を受
け、加速状態が検出されたときに、吸気行程が終了して
おりかつ点火の行われてない気筒の点火時期を加速状態
に移行したときの要求点火時期よりも進角補正する点火
時期補正手段１０３を有する。Reference numeral 15 denotes a control unit, which includes an ignition timing setting means 101 that receives an intake air amount signal and a rotational speed signal from an air flow meter 5 and a rotational speed sensor 12 as operating condition detection means, and sets the ignition timing according to the operating condition; Acceleration detection means 102 receives the output of the throttle sensor 9 and detects the acceleration state of the engine; The engine has an ignition timing correction means 103 that advances the ignition timing of the cylinders that are not activated beyond the required ignition timing when transitioning to the acceleration state.
続いて、上記コントロールユニット１５による点火時期
制御の流れを第２図乃至第４図に沿って説明する。Next, the flow of ignition timing control by the control unit 15 will be explained with reference to FIGS. 2 to 4.
先ず、スタートすると、アイドルスイッチがＯＮからＯ
ＦＦへ変化したか否かを判定する（ステップＳ＋）。First, when starting, the idle switch changes from ON to OFF.
It is determined whether it has changed to FF (step S+).
アイドルスイッチがＯＮからＯＦＦへ変化している場合
には、アイドル運転状態から通常の運転状態へ移行した
ので、始動時におけるファーストアイドルか否かを判定
しくステップＳ２）、ファーストアイドルでなければ、
続けて、スロットル開度の変化量により加速検出手段１
０２が加速したか否かの判断を行い（ステップＳ３）、
加速判定が有る場合には加速判定信号が点火時期補正手
段１０３に出力され、それに応じて点火時期補正手段１
０３が加速判定後第１回目の点火か否かを判断しくステ
ップＳ４）、第１回目の点火であれば点火時期設定手段
１０１に進角許可信号が出力され、アイドル点火時期（
第４図気筒＃１のＴ１参照）に補正量ΔＡを加えて、吸
気行程が終了しており、かつ点火の行われていない気筒
の点火時期を進角して（第４図気筒＃１のＴ２参照）点
火する（ステップＳ５）、これによって、燃焼性が高め
られ、エンジン回転数の低下は生じない（第４図実線の
本発明側参照）、なお、アイドル点火時期（Ｉｄ点火時
期）は通常、振動その他の要因でＭ、Ｂ、Ｔ、より遅角
されていることから、補正量ΔＡはアイドル点火時期に
加えて進角補正した結果が、Ｍ、Ｂ、Ｔを超えないよう
に設定され、Ｉｄトルクを高めるようになっている（第
３図参照）。If the idle switch has changed from ON to OFF, it has transitioned from the idle operating state to the normal operating state, so it is necessary to determine whether or not it is a fast idle at the time of startup (Step S2); if it is not a fast idle,
Next, the acceleration detection means 1 is detected based on the amount of change in the throttle opening.
02 is accelerated (step S3),
If there is an acceleration determination, an acceleration determination signal is output to the ignition timing correction means 103, and the ignition timing correction means 1 is adjusted accordingly.
03 is the first ignition after the acceleration determination (Step S4). If it is the first ignition, an advance permission signal is output to the ignition timing setting means 101, and the idle ignition timing (
The correction amount ΔA is added to T1 of cylinder #1 in Figure 4), and the ignition timing of the cylinder whose intake stroke has ended and ignition is not performed is advanced (see T1 of cylinder #1 in Figure 4). (see T2) ignite (step S5), thereby improving combustibility and causing no drop in engine speed (see the solid line in Fig. 4 on the present invention side). Note that the idle ignition timing (Id ignition timing) is Normally, the ignition timing is retarded by M, B, and T due to vibration and other factors, so the correction amount ΔA is set so that the result of advance correction in addition to the idle ignition timing does not exceed M, B, and T. The Id torque is increased (see Fig. 3).
また、ステップＳ４での判断において、加速判定後の第
１回目の点火でなければ、通常の制御実行許可信号が点
火時期設定手段１０１に出力されるので、加速補正処理
例えばノッキング防止のための遅角補正を行い（ステッ
プＳａ）、回転数センサＩ２の出力よりエンジン回転数
を読み込み（ステップＳ７）、エアフローメータ５の出
力より吸入空気量を読み込み（ステップＳ８）、それか
ら１点火時期マツプより、エンジン回転数及び吸入空気
量に応じた最適の点火時期を求め１点火する（ステップ
Ｓ９）。In addition, in the judgment in step S4, if it is not the first ignition after the acceleration judgment, a normal control execution permission signal is output to the ignition timing setting means 101, so that acceleration correction processing, such as a delay for knock prevention, is performed. The angle is corrected (step Sa), the engine speed is read from the output of the rotation speed sensor I2 (step S7), the intake air amount is read from the output of the air flow meter 5 (step S8), and then the engine speed is adjusted from the 1 ignition timing map. The optimum ignition timing is determined according to the rotational speed and intake air amount, and one ignition is performed (step S9).
また、ステップＳ１での判定において、アイドルスイッ
チがＯＮからＯＦＦへ変化していなければ、アイドルス
イッチがＯＦＦであるか否かを判定しくステップ５ｌｏ
）、アイドルスイッチがＯＦＦであれば通常の運転時で
あるので、ステップＳ７へ移り、ステップ８７〜Ｓ９で
通常のマツプ制御を行う一方、アイドルスイッチがＯＮ
であればアイドル運転時であるので、アイドル点火時期
とし、点火する（ステップ５ｒｔ）。Further, in the determination in step S1, if the idle switch has not changed from ON to OFF, it is determined whether the idle switch is OFF or not.
), if the idle switch is OFF, it means normal operation, so the process moves to step S7, and normal map control is performed in steps 87 to S9, while the idle switch is ON.
If so, the engine is idling, so the ignition timing is set to idle and the engine is ignited (step 5rt).
さらに、ステップＳ２の判定でファーストアイドルであ
れば、エンジン冷却水温が低いことからエンジン回転数
がアイドル回転数より高く設定され、エンジン回転数低
下のおそれがないので、また、ステップＳ３の判定で加
速判定がなければ、通常の運転状態であるので、そ九ぞ
れステップＳ７へ直ちに移行する。Furthermore, if the determination in step S2 is fast idle, the engine speed is set higher than the idle speed because the engine cooling water temperature is low, and there is no risk of the engine speed decreasing, so the determination in step S3 is to accelerate the engine speed. If there is no determination, it is a normal operating state and the process immediately proceeds to step S7.
上記実施例は多気筒エンジンの場合の例であるが、ステ
ップＳ４の次に、クランク角度を読み込むステップと、
吸気弁が閉か否かの判定を行い閉の場合にステップＳ５
へ、開の場合にステップＳ６へ移るステップとを加える
ことで、単気筒エンジンにも適用することができる。The above embodiment is an example of a multi-cylinder engine, but after step S4 there is a step of reading the crank angle;
It is determined whether the intake valve is closed or not, and if it is closed, step S5
It can also be applied to a single cylinder engine by adding the step of proceeding to step S6 when it is open.
（発明の効果）
本発明は、上記のように、加速状態が検出されたとき、
吸気行程が終了しておりかつ点火の行われてない気筒の
点火時１期を加速状態に移行したときの要求点火時期よ
りも進角補正するようにしたから、加速時に吸入空気量
の増大に伴い圧縮圧力が増大することによるエンジン回
転数の低下を、燃焼行程にある気筒の燃焼性の向上によ
り防止することができる。(Effects of the Invention) As described above, the present invention provides, when an acceleration state is detected,
Since the ignition timing of the cylinder whose intake stroke has ended and ignition is not performed in the first stage is advanced from the required ignition timing when the engine shifts to the acceleration state, the intake air amount increases during acceleration. A decrease in engine speed due to an accompanying increase in compression pressure can be prevented by improving the combustibility of the cylinder in the combustion stroke.
【図面の簡単な説明】
図面は本発明の実施例を示し、第１図はエンジンの点火
時期制御装置の全体構成図、第２図はコントロールユニ
ットの処理の流れを示す流れ図、第３図は点火時期の補
正の説明図である。
■・・・・・・エンジン、３・・・・・・吸気通路、９
・・・・・・スロットルセンサ、１５・・・・・・コン
トロールユニット、１０１・・・・・・点火時期設定手
段、１０２・・・・・・加速検出手段、１０３・・・・
・・点火時期補正手段。[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, and FIG. 1 is an overall configuration diagram of an engine ignition timing control device, FIG. 2 is a flowchart showing the flow of processing of the control unit, and FIG. It is an explanatory view of correction of ignition timing. ■・・・Engine, 3・・・Intake passage, 9
... Throttle sensor, 15 ... Control unit, 101 ... Ignition timing setting means, 102 ... Acceleration detection means, 103 ...
...Ignition timing correction means.
Claims (1)
と、該運転状態検出手段の出力を受け運転状態に応じた
点火時期を設定する点火時期設定手段を有するものにお
いて、エンジンの加速状態を検出する加速検出手段と、
該加速検出手段の出力を受け、加速状態が検出されたと
きに、吸気行程が終了しており、かつ点火の行われてな
い気筒の点火時期を加速状態に移行したときの要求点火
時期よりも進角補正する点火時期補正手段を有すること
を特徴とするエンジンの点火時期制御装置。(1) Detects the acceleration state of the engine in an engine having an operating state detecting means for detecting the operating state of the engine, and an ignition timing setting means for receiving the output of the operating state detecting means and setting the ignition timing according to the operating state. acceleration detection means for
In response to the output of the acceleration detection means, when an acceleration state is detected, the ignition timing of the cylinder whose intake stroke has ended and ignition is not performed is set to be higher than the required ignition timing when the cylinder is shifted to the acceleration state. An ignition timing control device for an engine, comprising an ignition timing correction means for correcting the advance angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13679686A JPS62291473A (en) | 1986-06-11 | 1986-06-11 | Ignition timing control device for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13679686A JPS62291473A (en) | 1986-06-11 | 1986-06-11 | Ignition timing control device for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62291473A true JPS62291473A (en) | 1987-12-18 |
Family
ID=15183716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13679686A Pending JPS62291473A (en) | 1986-06-11 | 1986-06-11 | Ignition timing control device for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62291473A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01300064A (en) * | 1988-05-25 | 1989-12-04 | Kawasaki Heavy Ind Ltd | Ignition timing controlling method for engine |
| KR100302375B1 (en) * | 1999-08-26 | 2001-09-22 | 류정열 | Method for controlling an advancing to prevent knocking of an engine when a vechile is accelerated in idle |
-
1986
- 1986-06-11 JP JP13679686A patent/JPS62291473A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01300064A (en) * | 1988-05-25 | 1989-12-04 | Kawasaki Heavy Ind Ltd | Ignition timing controlling method for engine |
| KR100302375B1 (en) * | 1999-08-26 | 2001-09-22 | 류정열 | Method for controlling an advancing to prevent knocking of an engine when a vechile is accelerated in idle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0512543B2 (en) | ||
| JP2810410B2 (en) | Engine ignition timing control device | |
| JPH0275760A (en) | Ignition timing control device for internal combustion engine | |
| JPS62291473A (en) | Ignition timing control device for engine | |
| US6234147B1 (en) | Ignition timing control device for internal combustion engine | |
| JP2929619B2 (en) | Ignition timing control device for internal combustion engine | |
| JPH11270386A (en) | Fuel injection control device of internal combustion engine | |
| JPS60159372A (en) | Ignition-timing control for internal-combustion engine | |
| JP2884875B2 (en) | Ignition timing control device for resuming fuel supply of internal combustion engine | |
| JPH07180643A (en) | Ignition timing control device for internal combustion engine | |
| JP2917717B2 (en) | Ignition timing control device for internal combustion engine | |
| JPH11351112A (en) | Ignition timing controller for on-vehicle internal combustion engine | |
| JPS6065279A (en) | Ignition-timing controller on starting of internal- combustion engine | |
| JPS58180766A (en) | Ignition timing controller for internal-combustion engine | |
| JP2537422B2 (en) | Ignition timing control device for internal combustion engine | |
| JPS62170754A (en) | Ignition timing control device for internal combustion engine | |
| JP2528168B2 (en) | Ignition timing control device for internal combustion engine | |
| JP2940035B2 (en) | Fuel injection control device for internal combustion engine | |
| JP2528901B2 (en) | Ignition timing control device for internal combustion engine | |
| JPS6079165A (en) | Ignition timing control method of internal-combustion engine | |
| JP2746648B2 (en) | Engine ignition timing control device | |
| JP2810411B2 (en) | Engine ignition timing control device | |
| JPH0684749B2 (en) | Ignition timing control method for multi-cylinder internal combustion engine | |
| JPH0581730B2 (en) | ||
| JPH0868373A (en) | Ignition timing control device for multicylinder internal combustion engine |